Heart disorder

Researchers are testing whether an educational and implementation tool helps hospitals follow best-practice guidelines for preventing second strokes caused by heart conditions. The trial enrolls about 2,400 patients who have had an ischemic stroke or a transient ischemic attack. …

This study tests a minimally invasive procedure called SESAME for people with thickened heart muscle that blocks blood flow from the heart. The procedure uses a catheter to make a controlled slice in the muscle, aiming to relieve symptoms like shortness of breath. Researchers wil…

This Phase 3 trial will test whether a combination of three cholesterol-lowering drugs—bempedoic acid, ezetimibe, and a high-intensity statin—can reduce and stabilize plaque buildup in the coronary arteries. The study enrolls 103 adults with coronary atherosclerosis who have neve…

Researchers are studying depemokimab, an injected biologic drug, in adults aged 18 to 75 who have allergic bronchopulmonary aspergillosis (ABPA) along with severe eosinophilic asthma. The study tracks how many asthma attacks need systemic steroids and whether participants' qualit…

Researchers are testing whether a standardized care pathway helps adults with advanced heart failure in Latin America complete a multidisciplinary evaluation and receive a documented treatment decision within 90 days. The trial includes 360 adults with acquired or structural hear…

This study tests a new imaging and guidance system called VERAFEYE that creates a 3D model of the heart to help doctors navigate during catheter ablation for atrial fibrillation. About 50 adults with paroxysmal or persistent atrial fibrillation will have their standard ablation p…

Adults with a secundum atrial septal defect (a hole in the heart) who are scheduled for device closure receive either dapagliflozin or a placebo for six months. Researchers use advanced echocardiography to measure how well the right side of the heart recovers and reverses its enl…

This study will test whether living in a self-contained, AI-managed community (called a Microcity) can improve mental health and reduce addiction in adults with conditions like autism, ADHD, substance use disorders, and behavioral addictions. Up to 1 million participants will liv…

This study tests whether a virtual team of clinical pharmacists and cardiologists can help doctors prescribe the right heart failure medications for Veterans. Many patients do not receive all recommended drugs at effective doses after a hospital stay. The team reviews patient rec…

This pilot study tests a procedure called left atrial appendage occlusion (LAAO) using the Watchman Flx PRO device in 40 dialysis patients with atrial fibrillation. The goal is to see if it safely reduces stroke and major bleeding compared to standard care. Participants will be f…

This observational study is looking at whether Ferretab comp., an oral iron and folic acid supplement, can improve anemia and heart-related symptoms in adults who also have coronary artery disease or heart failure. Participants take the supplement for 12 weeks as part of their us…

Researchers are studying how heart arteries change after a blocked vessel is opened with a paclitaxel drug-coated balloon instead of a metal stent. The balloon delivers a drug to the artery wall and then is removed, leaving no permanent implant. About 150 adults who had this proc…

This study tests a new device called the VERAFEYE System, which creates a 3D model of the heart to guide doctors during catheter ablation for paroxysmal atrial fibrillation (a type of irregular heartbeat). About 100 adults who are already scheduled for ablation will have the proc…

Researchers are testing the FARAFLEX Mapping and Pulsed Field Ablation System in people with atrial fibrillation who need a repeat ablation procedure. The trial compares the FARAFLEX system, which uses electrographic flow mapping and pulsed electric fields, against a control trea…

Researchers are testing a medical device that has not been approved or cleared by the U.S. FDA. The trial aims to see whether the device can help control a disease, possibly by reducing symptoms or slowing its course. Participants receive the device as part of the study, and the …

This study looks at how well the drug Jardiance works compared to other standard heart failure treatments in Chinese patients with a specific type of heart failure (HFrEF). Researchers will track about 5,000 adults to see which treatment better prevents heart failure hospitalizat…

This study tests an experimental oral drug called AC01 in 400 people with chronic advanced heart failure and a weak heart pump. The goal is to see if AC01 can safely improve heart function over 12 weeks compared to a placebo. Participants will have heart ultrasounds and blood tes…

Researchers test whether adding superior vena cava isolation to standard pulmonary vein isolation helps people with persistent atrial fibrillation. About 340 participants aged 18 to 75 whose AFib has lasted less than a year and who are having their first catheter ablation join th…

Researchers are testing whether trametinib, an FDA-approved cancer drug, can help infants with RASopathies who have a severe, life-threatening heart condition called hypertrophic cardiomyopathy. The trial enrolls about 25 babies with a confirmed genetic diagnosis. Participants re…

Researchers are testing whether a drug-coated balloon alone can keep heart arteries open after clearing a chronic total blockage, without leaving a permanent metal stent. The study plans to enroll 38 adults with a long-standing coronary occlusion and angina or documented ischemia…

Researchers compare two timing strategies for the Impella CP heart pump in people who have a heart attack and develop cardiogenic shock, a dangerous state where the heart cannot pump enough blood. One group receives the pump before the artery-opening procedure called PCI, while t…

Researchers in Denmark are testing whether a structured weight loss program can slow the progression of atrial fibrillation in people who are overweight or obese. The trial enrolls 480 adults with symptomatic paroxysmal or early persistent atrial fibrillation and a body mass inde…

This registry will follow 2000 people with complex coronary artery disease who receive the Inspiron EVO drug-eluting stent. The stent is designed to be easier to deliver and stronger than standard stents. Researchers will track how well the stent works and whether it reduces hear…

This trial explores whether a single, low-dose radiation treatment to the heart can improve pumping function in people with advanced or end-stage heart failure. The study includes 20 adults with severe heart failure who are not eligible for a transplant or mechanical heart pump. …

This study tests whether two heart failure medications, dapagliflozin and spironolactone, can help the heart recover better after aortic valve replacement. About 445 adults with severe aortic stenosis will take one or both drugs daily for 12 months. The goal is to see if these me…

This trial tests whether a sirolimus-coated balloon, guided by intravascular ultrasound, works as well as a standard drug-eluting stent for people with acute coronary syndrome and large-vessel heart blockages. Participants are randomly assigned to receive either the balloon witho…

Researchers are testing whether adults with obstructive hypertrophic cardiomyopathy can safely taper off beta-blockers after their heart condition has stabilized on mavacamten. The trial enrolls 286 people aged 18 to 75 who have been on a stable dose of mavacamten and one beta-bl…

This study looks at people with atrial fibrillation (an irregular heartbeat) who have already had a successful mitral valve repair. It compares two approaches: catheter ablation (a procedure to fix the heart's electrical signals) versus standard medical care. The goal is to see i…

This study tests whether using a heart pump (Impella 5.5) along with standard heart failure medications can help people with severe heart failure and shock recover without needing a heart transplant or permanent artificial heart. About 250 adults with weak hearts (ejection fracti…

This study tests a community-based exercise program for people aged 50 and older who have at least two chronic conditions, such as heart disease, diabetes, arthritis, or obesity. The program is designed to improve muscle strength, heart and lung fitness, and overall well-being. R…

This trial tests a medical device that has not been approved or cleared by the U.S. FDA. Researchers want to learn whether the device is safe and whether it can help people with a specific condition. Participants receive the device as part of the study, and the team monitors thei…

This phase 3 trial is testing whether an experimental drug called BHB-1893 works better than the standard beta-blocker metoprolol for adults with symptomatic obstructive hypertrophic cardiomyopathy (oHCM), a condition where the heart muscle thickens and blocks blood flow. The stu…

This platform trial will enroll 1,000 adults with heart failure to test several different treatments at the same time. Participants are randomly assigned to either an experimental intervention or standard care. The main goal is to see if these treatments can prevent death or hosp…

This early-stage study tests whether it is safe to take nitroglycerin spray (used for chest pain) together with an experimental drug called nurandociguat (designed to help kidneys) in 36 adults with stable coronary artery disease. Both drugs widen blood vessels, so the main conce…

The RELEASE trial tests whether adults aged 65 and older with stable ischemic heart disease can safely stop their daily low-dose aspirin. Researchers will compare stopping aspirin against continuing it in 7,000 participants who have been free of heart events for at least two year…

This trial tests whether adding Yiqi Fumai lyophilized injection to standard heart failure treatment improves symptoms and reduces heart strain in adults with chronic heart failure caused by coronary heart disease. About 100 participants at four hospitals in China will receive th…

This study tests whether adjusting the dose of mavacamten based on heart pumping strength can further reduce the blockage of blood flow in people with obstructive hypertrophic cardiomyopathy. Participants are adults who have been on a stable mavacamten dose for at least 12 weeks …

This study tests whether using a patient's genetic information to choose anti-platelet drugs can lower bleeding risks compared to standard care. About 1,760 high-risk patients receiving a heart stent will be assigned to either a personalized drug plan or usual therapy. The goal i…

This trial tests a new heart valve called the INOVARE SAFESYNC, which doctors implant through a tube in the leg, avoiding open-heart surgery. The study enrolls 40 people with severe aortic stenosis, a narrowing of the heart's main valve, who are at intermediate or higher risk for…

This trial tests whether a 12-week remotely supervised exercise program can improve recovery in adults aged 50 to 75 who had catheter ablation for atrial fibrillation. Participants are randomly assigned to either the telerehabilitation group, which does aerobic, strengthening, an…

This trial tests whether giving naloxone during CPR helps people who have a cardiac arrest in the hospital. Naloxone is a drug that blocks opioid effects, and researchers want to see if it improves survival and recovery. About 850 adults who receive adrenaline during CPR will be …

This study tests whether a minimally invasive heart valve repair procedure (TEER) plus standard medication can reduce hospital readmissions over two years in people with moderate mitral regurgitation that worsens with exertion. About 300 participants will be randomly assigned to …

This trial tests a 'Hospital-to-Home' support program for people recovering from acute coronary syndrome, a group of heart emergencies like heart attacks. Participants are randomly assigned to either the structured program or standard education. The program uses behavior change m…

This early trial tests a new device called Anchord that repairs leaky mitral valves without open-heart surgery. It will include 5 people with severe valve leakage who are too high-risk for standard surgery. The goal is to see if the device is safe and can reduce the leak, improvi…

This trial tests two ways of placing a pacemaker lead in the heart's left bundle branch area. One strategy aims to directly capture the heart's conduction system, while the other accepts capture of the nearby septal muscle. Researchers will compare how well the heart's pumping fu…

This study tests whether adding a preventive procedure called pulmonary vein isolation (PVI) to the standard ablation for typical atrial flutter can reduce the risk of heart-related hospital visits, stroke, or death. The trial enrolls adults aged 55 and older with an enlarged lef…

This trial tests whether a small leadless pacemaker, the Aveir VR, can be safely implanted through the jugular vein in the neck instead of the usual route. Researchers will enroll 15 adults with slow heart rhythms who need ventricular pacing. The main goal is to see if the proced…

This trial tests a structured care pathway called TORCH-ITAP in Latin America. The pathway standardizes how patients with congenital heart disease are identified, referred, evaluated, and matched for heart or lung transplants. Researchers will compare hospitals using the pathway …

This pilot study tests whether putting back a child's own thymus tissue during heart surgery is safe and helps support the immune system. In some congenital heart disease surgeries, the thymus is removed to reach the heart, which may weaken immunity. Researchers will compare chil…

This trial tests whether a newer ventilation method, called flow-controlled ventilation, keeps the lungs and diaphragm in better shape than the standard pressure-controlled method during elective heart bypass surgery. About 154 adults scheduled for on-pump coronary artery bypass …

This trial tests whether starting a powerful cholesterol-lowering combination right after a heart attack can make the fatty plaques in coronary arteries more stable. Researchers will compare an early intensive strategy using a high-intensity statin, ezetimibe, and inclisiran agai…

This trial tests whether a coordinated care team, including cardiologists, pharmacists, dietitians, and rehabilitation specialists, can improve outcomes for people hospitalized with heart failure with preserved ejection fraction (HFpEF). Participants receive structured follow-up,…

This pilot study tests whether endoscopic sleeve gastroplasty (ESG), a minimally invasive procedure that reduces stomach size, can help obese adults with heart failure with preserved ejection fraction (HFpEF). Researchers will measure changes in heart failure symptoms and weight …

This study compares two blood thinners—apixaban (Eliquis) and warfarin (Coumadin)—in 460 people with advanced heart failure who have a HeartMate 3 heart pump. The goal is to see which drug better prevents strokes, pump clots, and serious bleeding. Participants must have had their…

This trial tests whether a new scoring system, called the Biological Congestion Score (BCS), can help doctors better manage diuretic medications in people with chronic heart failure. The BCS combines four blood biomarkers with clinical information to estimate fluid congestion and…

This trial tests a small device called the C-MIC System, which is implanted under the skin and delivers a constant low-level electrical current to the heart. The goal is to see if this microcurrent can improve heart pumping ability, exercise capacity, and quality of life in peopl…

This trial compares two ways of placing a pacemaker lead in people who develop a slow heart rhythm after cardiac surgery. One method uses conventional right ventricular pacing, while the other uses left bundle branch area pacing, which aims to activate the heart more naturally. T…

This trial compares two types of replacement heart valves used in a procedure called TAVI for people with severe aortic valve stenosis and a small aortic annulus. The two valves are the Meril Octapro+ and the Abbott Navitor. Researchers want to see which design provides better sa…

This study tests the long-term safety and effectiveness of an experimental drug called ALXN2220 in adults with transthyretin amyloid cardiomyopathy (ATTR-CM), a condition where abnormal proteins build up in the heart and impair its function. Participants who completed an earlier …

This study compares two catheter ablation techniques for treating atrial fibrillation, a common heart rhythm problem. One method uses a single-shot device, while the other uses a focal dual-energy approach. The trial includes 268 adults with symptomatic atrial fibrillation who ar…

This study tests whether using a drug-coated balloon during a procedure to open a blocked artery is better than medication alone for treating plaque erosions, a common cause of heart attacks. About 62 adults who have had a heart attack and have plaque erosion will be randomly ass…

This trial tests whether a traditional Chinese herbal formula, Fuzheng Yangxin, can help people recover better after coronary artery bypass grafting (CABG), a common heart surgery. The study includes 230 patients who have the surgery and show signs of a specific imbalance (qi-yin…

This trial investigates whether using a temporary heart pump (microaxial flow pump) right after opening a blocked artery improves survival in people with cardiogenic shock—a life-threatening condition where the heart can't pump enough blood. It also tests whether advanced monitor…

This trial tests whether apixaban, a blood thinner, can reduce the risk of stroke or blood clots in adults on dialysis who also have atrial fibrillation (an irregular heartbeat). Participants are randomly assigned to receive either apixaban or no oral anticoagulant, while continu…

This trial investigates whether a new technique called pulsed field ablation (PFA) can more effectively treat atrial fibrillation, a common heart rhythm problem. The procedure uses short electrical pulses to create precise lesions in the heart tissue, aiming to block faulty signa…

This trial tests whether a communication training program for emergency dispatchers can help them recognize cardiac arrest over the phone and guide callers to start CPR faster. The study involves about 987 adults who experience cardiac arrest outside of a hospital and call the SA…

This phase 2 trial tests whether a combined antioxidant therapy—ascorbate, N-acetylcysteine, and deferoxamine—can reduce heart muscle damage when given before and during angioplasty for a first anterior ST-elevation heart attack. Adults eligible for primary PCI will be randomly a…

This trial tests whether augmented reality (AR) can allow a technical expert to support doctors remotely during a heart procedure called catheter ablation for atrial fibrillation. Using a HoloLens headset and a remote connection, the expert may guide the procedure from a differen…

This study compares two pacing methods in 80 people with heart failure and a specific heart block. One method uses a lead placed in the left bundle branch area; the other adds a second lead in the left ventricle. Each participant will try both methods for six months to see which …

This trial tests whether adding a blood-filtering device, called hemoadsorption, to the heart-lung machine can reduce harmful inflammation in children undergoing complex open-heart surgery. The device is designed to remove inflammatory proteins, known as cytokines, from the blood…

This trial tests whether specific care strategies used in the intensive care unit after cardiac arrest can improve neurological recovery and survival. Adults who remain comatose after their heartbeat is restored will be cared for using either head elevation or a near-supine posit…

This trial is testing the best timing for opening additional blocked arteries in people who have had a severe type of heart attack (STEMI) with multiple blocked vessels. After the main blocked artery is opened, participants are randomly assigned to have the other blockages treate…

This phase 3 trial investigates whether adding acetazolamide—a drug often used for altitude sickness—to standard diuretics can improve fluid removal in people with heart failure who experience sudden fluid buildup. Participants take the medication for up to five days while being …

This trial asks whether people with heart failure who take SGLT-2 inhibitors (like dapagliflozin or empagliflozin) should continue the medication right up to cardiac surgery, rather than stopping it three days before as currently recommended. The study will compare outcomes like …

This trial tests whether icosapent ethyl, a purified form of fish oil, can stabilize high-risk coronary plaques in people with heart disease. Participants have plaques that narrow a major heart artery by 30–70% and show at least one high-risk feature on a CT scan. Half will take …

This trial tests whether a newer pacing method, called left bundle branch area pacing, is better than the standard right ventricular pacing for adults with permanent atrial fibrillation and a need for a pacemaker. The goal is to see if the newer technique reduces the risk of deat…

This trial investigates whether guanfacine or cromolyn sodium—two drugs already approved for other conditions—can improve physical functioning and reduce symptoms like fatigue, brain fog, and gastrointestinal issues in adults with postural orthostatic tachycardia syndrome (POTS).…

This trial tests whether starting a temporary balloon pump in the aorta before the standard artery-opening procedure (angioplasty) can improve outcomes for people who arrive at the hospital 4 to 12 hours after a major heart attack. Half of the participants will receive the balloo…

This trial investigates whether a minimally invasive procedure called mitral valve TEER, added to standard medical therapy, improves outcomes for heart failure patients whose mitral valve leakage becomes severe only during exercise. Participants are randomly assigned to receive e…

This trial is testing a new device called MRace to repair a leaky mitral valve in people with severe functional mitral regurgitation, a condition where the valve doesn't close properly, causing blood to flow backward. The device is placed through a vein in the leg and guided to t…

This study tests a new device called MRace, designed to repair severe mitral regurgitation—a condition where the heart's mitral valve doesn't close properly, causing blood to leak backward. The device is implanted through a vein in the leg, avoiding open-heart surgery, and is aim…

This trial asks whether starting dialysis early—within 6 hours—in patients with cardiogenic shock and fluid overload can reduce deaths in the hospital compared to waiting until it's clearly needed. It enrolls adults in intensive care with severe heart pump failure and signs of ex…

This study tests a new device called MRace, designed to repair a leaky mitral valve in the heart without open surgery. The device is placed through a vein in the leg and guided to the heart to help the valve close properly. The trial will include up to 15 people with severe mitra…

This trial tests whether repairing a leaky mitral valve early, using a minimally invasive clip procedure, can help people with heart failure and reduced pumping function tolerate and benefit from standard heart failure medications. Participants are randomly assigned to receive th…

This trial is testing whether a new heart valve device, called Myval, can safely and effectively treat people with severe aortic regurgitation—a condition where the heart's aortic valve doesn't close properly, causing blood to leak backward. The study involves about 164 adults wh…

This study tests a new laser system designed to vaporize plaque in blocked coronary arteries before doctors place a stent. The trial compares the new laser device to an existing one in about 218 people with severe heart artery narrowing. The main goal is to see if the new system …

This trial tests whether a smartphone app that uses light to measure heart rhythm can reliably detect when atrial fibrillation (AF) spontaneously returns to a normal heartbeat. About 200 adults with AF scheduled for an electrical cardioversion will either receive standard care or…

This trial tests whether ezetimibe, a common cholesterol-lowering medication, can reduce the return of irregular heartbeats in people with persistent atrial fibrillation who undergo catheter ablation. Half of the 120 participants will take ezetimibe daily for six months after the…

This phase 2 trial is testing an investigational drug called QLS4131 in people newly diagnosed with AL amyloidosis, a condition where abnormal proteins build up in organs and cause damage. QLS4131 is a trispecific antibody designed to target and eliminate the plasma cells produci…

This trial tests whether giving empagliflozin before or after a procedure to open a blocked heart artery (primary PCI) reduces heart muscle injury during a heart attack. Adults aged 18-75 of South Asian origin having their first heart attack will be randomly assigned to receive e…

This trial tests whether a minimally invasive heart bypass surgery, done through a small incision on the left side of the chest, helps frail adults aged 60 and older recover better than the traditional approach of opening the breastbone. Participants are randomly assigned to one …

This trial tests a new device called the Angimis Atherectomy System, which uses laser energy to break up plaque in coronary arteries that are too narrow or hardened for standard balloon or stent procedures. The study enrolls adults with coronary artery disease who have at least o…

This trial compares two methods for closing the main artery in the leg after a TAVI procedure, which replaces a heart valve without open surgery. Half of the participants will have the artery closed with a single suture device, while the other half will receive a hybrid approach …

This study tests whether pacing the heart from a specific spot (posterosuperior bundle) can lower the chance of atrial fibrillation (AF) in people with sinus node dysfunction (a slow or irregular heartbeat). About 300 adults who need a pacemaker will be randomly assigned to get p…

This trial tests whether adding a minimally invasive mitral valve repair (transcatheter edge-to-edge repair, or TEER) to standard catheter ablation improves outcomes for people with both atrial functional mitral regurgitation and atrial fibrillation. Participants are randomly ass…

This study tests a device called TricValve for people with severe tricuspid regurgitation, a condition where a heart valve leaks. The device is implanted in the veins to help blood flow better. About 780 participants will be randomly assigned to get the device plus standard medic…

This trial tests whether dapagliflozin, a drug used for diabetes, can improve blood flow in the tiny vessels of the heart in people with angina (chest pain) but no blocked coronary arteries. Participants will take either dapagliflozin or a placebo daily for 180 days. The study me…

This trial tests whether tirzepatide, a weekly injection used for diabetes and weight loss, can improve physical function in adults with heart failure and obesity. Participants will receive either tirzepatide or a placebo for six months, while continuing their usual heart failure…

This trial tests whether a catheter-based procedure called transcatheter edge-to-edge repair (TEER) can improve outcomes in people with atrial functional mitral regurgitation, a condition where the heart's left atrium enlarges and causes the mitral valve to leak. The study will e…

This study tests whether adding mobile health tools—like smartphone apps, connected scales, blood pressure monitors, and activity trackers—to standard cardiac rehab helps heart patients monitor their health and stick to healthy habits at home. The trial enrolls adults who have ha…

This trial compares two ways of giving tranexamic acid, a drug that reduces bleeding, to adults undergoing off-pump coronary artery bypass surgery. Half receive the drug as a pill before surgery, while the other half get it through an IV during surgery. The goal is to see if the …

This phase 3 trial is testing an investigational drug called abelacimab in about 2,500 people with atrial fibrillation (an irregular heartbeat) who are at high risk for stroke but cannot take standard oral blood thinners. Participants will receive either abelacimab or a placebo, …

This trial asks whether people with severe aortic stenosis can safely go home the same day after a minimally invasive heart valve replacement (TAVI) instead of staying in the hospital. About 764 patients who are stable six hours after the procedure will be randomly assigned to ei…

This trial tests whether wearing a portable heart monitor for two weeks after a TAVI procedure can reduce the risk of sudden death, dangerous heart rhythms, or stroke within the following year. People who have had a successful TAVI and show certain electrical abnormalities on the…

This trial tests whether a hybrid cardiac telerehabilitation program — combining in-person sessions, live video workouts, and remote monitoring — can improve adherence to exercise rehab in people with coronary artery disease or stable heart failure. Participants are randomly assi…

This trial tests whether angiotensin receptor blockers (ARBs), a type of blood pressure medication, can reduce the risk of death or heart failure in people who have had a transcatheter aortic valve replacement (TAVR) for severe aortic stenosis and still have a thickened heart mus…

This trial explores whether starting transdermal estradiol (a skin gel or patch) soon after menopause can protect the heart and brain in women who have hot flashes and at least one cardiovascular risk factor. One hundred women will be randomly assigned to receive the hormone ther…

This trial is testing a new device called the Crea Aortic Valve, a replacement heart valve that can be implanted through a catheter without open-heart surgery. It is designed for people aged 60 and older with severe aortic stenosis—a narrowing of the heart's main valve—who are co…

This clinical trial tests whether giving two electrical shocks at once (dual shock) is better than the standard single shock for restoring normal heart rhythm in people with persistent atrial fibrillation. About 177 participants will be randomly assigned to receive either a stand…

This trial tests whether adding eccentric cycling—a type of exercise where muscles lengthen under tension—to standard cardiac rehabilitation can improve recovery in people who have had a heart attack. Eccentric exercise may allow higher muscle loads with less cardiovascular deman…

This trial tests whether adding extra ablation lines to the standard pulsed-field ablation procedure helps people with long-standing atrial fibrillation (AF) stay in normal heart rhythm. 430 participants with AF lasting 1-3 years will be randomly assigned to receive either standa…

This trial tests whether a year-long, supervised exercise program — including aerobic, resistance, and breathing exercises — can improve outcomes for people with heart failure with preserved ejection fraction (HFpEF). Participants are randomly assigned to either usual care or usu…

This trial tests whether a mechanical, spring-driven device called FreedomEDGE® can safely and effectively deliver daratumumab, a standard treatment for multiple myeloma and amyloidosis. Currently, nurses give these injections by hand, which can be physically demanding. About 100…

This trial tests whether a 9-month program called STEP COACH can help people with coronary artery disease stay physically active after completing cardiac rehab. Participants use their own smartwatch or smartphone to track steps and receive coaching on increasing both step volume …

This trial investigates whether a new pulsed field ablation system can safely and effectively treat paroxysmal atrial fibrillation, a condition where the heart beats irregularly. The system uses short electrical pulses to destroy tiny areas of heart tissue causing the abnormal rh…

This study tests a new device called the Laplace Transcatheter Tricuspid Valve Replacement (TTVR) System for people with severe tricuspid regurgitation, a condition where the heart's tricuspid valve leaks blood backward. The device is placed through a catheter, avoiding open-hear…

This trial tests whether a personalized exercise program before heart surgery can improve physical fitness in adults with congenital heart disease. Participants are randomly assigned to either usual care or a 6-week prehabilitation plan with aerobic, breathing, and strength exerc…

This study tests whether the drug vericiguat can slow the buildup of calcium on the aortic valve in people with mild-to-moderate aortic valve stenosis. Participants take vericiguat or a placebo daily for 24 months, with regular heart scans to track valve calcium and function. The…

This trial tests whether adding tirzepatide (Mounjaro) to a structured lifestyle program reduces the return of atrial fibrillation within a year after catheter ablation in obese patients. About 710 participants with symptomatic AF and a BMI of 28 or higher (or 24 with other risk …

This study tests a device called the Globe Pulsed Field System, which uses short bursts of electric energy to destroy tiny areas of heart tissue that cause abnormal rhythms in people with paroxysmal atrial fibrillation (a type of irregular heartbeat that comes and goes). The tria…

This phase 3 trial compares an experimental CAR-T cell therapy, NXC-201, with a standard drug combination (daratumumab plus CyBorD) in people newly diagnosed with AL amyloidosis, a rare condition where abnormal proteins damage organs. Participants receive either a single infusion…

This trial tests whether adding a 3D holographic visualization tool, called EchoPixel Holographic Therapy Guidance, helps doctors perform two common heart procedures more accurately. The procedures are left atrial appendage occlusion (for atrial fibrillation) and mitral valve rep…

This study tests whether a nurse-led discharge education program helps heart failure patients avoid unplanned hospital readmissions within 30 days. The program includes an educational assessment, a discharge session using the teach-back method, and a follow-up phone call. Researc…

This trial compares a minimally invasive surgery that closes off a small heart pouch (the left atrial appendage) to standard blood-thinning medication in people with atrial fibrillation who have a high risk of bleeding. The goal is to see if the surgery can prevent strokes, major…

This study tests whether adding a small amount of saltwater (hypertonic saline) to a standard water pill (furosemide) can help people with heart failure and kidney disease. The goal is to improve fluid removal, reduce hospital readmissions, and lower the risk of death. The trial …

This study tests whether a personalized high-intensity interval training (HIIT) program can improve exercise capacity and quality of life in people with heart failure with preserved ejection fraction (HFpEF). Participants are randomly assigned to either a 24-week HIIT plan tailor…

This study looks at whether giving doctors—and sometimes patients—personalized reports on recommended heart failure treatments helps more people get the right medications. It involves adults with heart failure and reduced ejection fraction (HFrEF) in the Netherlands. The goal is …

This study tests whether giving high-risk heart attack patients personalized education before they leave the hospital can reduce their chances of being readmitted. The education covers disease management, medication adherence, lifestyle changes, and recognizing warning signs. Res…

This trial investigates whether photobiomodulation—applying low-level laser light to the surgical wound—can improve healing and reduce complications after coronary artery bypass grafting (CABG). It compares two methods of harvesting the saphenous vein (the conventional technique …

This trial investigates whether vericiguat, added to standard treatment, can improve quality of life and reduce hospitalizations in adults with heart failure and reduced ejection fraction. Participants receive either vericiguat or a placebo for six months, and their health status…

This study tests whether community health workers (CHWs) can help people with rheumatic heart disease (RHD) take their monthly antibiotic shots consistently. The trial will enroll about 308 participants in Brazil and Timor-Leste, including adults and children with RHD and their c…

This study compares a long-acting antibiotic called dalbavancin to standard therapy for treating infective endocarditis, a serious infection of the heart valves caused by certain bacteria. Dalbavancin is given as one or two intravenous infusions, while standard therapy requires d…

This clinical trial is testing a new heart valve replacement system called Encantor, which uses software to guide placement of the valve. The study includes 150 adults with severe aortic stenosis who are candidates for a minimally invasive procedure. Researchers will track how ma…

This study tests a small, hourglass-shaped device implanted in the heart's upper chambers to lower pressure and reduce fluid buildup in the lungs. It is for people with advanced heart failure whose heart pumps weakly (ejection fraction 40% or less). The trial randomly assigns som…

This study tests a newer, more natural pacing method for people with heart failure and electrical problems in the heart. The approach uses the heart's own conduction system to improve coordination between chambers. Researchers will track patients for two years to see if this meth…

Many children with complex congenital heart disease struggle with executive functions like attention, planning, and self-control, which are crucial for school and daily life. This study tests a 12-week program called E-Fit that combines computer-based cognitive training, one-on-o…

This trial tests whether a newer balloon-expandable heart valve with intermediate sizes (Myval) is as safe as a standard self-expanding valve (Evolut) in people with severe aortic stenosis whose valve measurements fall in a 'borderline' range. About 600 participants will be rando…

This trial tests whether filtering a specific inflammatory protein (C-reactive protein, or CRP) from the blood can improve outcomes in people with cardiogenic shock—a life-threatening condition where the heart cannot pump enough blood—after a heart attack. About 50 participants w…

This study tests whether a single intravenous dose of iron (ferric derisomaltose) can improve symptoms, reduce hospitalizations, and boost quality of life in adults aged 65 and older who have heart failure with preserved ejection fraction and iron deficiency. Participants receive…

This study tests two chemotherapy-free treatments for people newly diagnosed with AL amyloidosis, a rare blood disorder. The choice of treatment depends on whether the patient has a specific genetic change called t(11;14). Those with t(11;14) receive a daily pill called sonrotocl…

This trial investigates whether patients with acute coronary syndrome can safely stop taking aspirin soon after a heart stent procedure and continue with only a potent antiplatelet drug (ticagrelor or prasugrel). The standard approach is to take both aspirin and a P2Y12 inhibitor…

This study is testing a new artificial heart valve, called the TRIFORMIS RESILIA, for people who need their tricuspid valve replaced. The tricuspid valve controls blood flow between two right heart chambers. Researchers will follow 75 adults who receive this valve during surgery …

This trial tests whether a less intensive antiplatelet therapy is safer and as effective as standard dual therapy for people with spontaneous coronary artery dissection (SCAD), a rare cause of heart attack in women aged 30–55. Unlike typical heart attacks, SCAD involves a tear in…

This study tests whether using a temporary heart pump (CorVad) during a procedure to open blocked arteries (PCI) can improve outcomes for people with complex coronary artery disease and a very weak heart (ejection fraction below 35%). Half of the 452 participants will receive the…

This study tests a web-based tool called SHARE-HF that helps heart failure patients and their doctors make medication decisions together. The tool shows personalized prognosis and medication options. Researchers will compare clinics using the tool to those with usual care, involv…

This study tests a 'nudge' program—including text reminders, a medication calendar, and an action plan—to help 84 adults with atrial fibrillation take their blood thinners consistently. Participants will watch an educational video, create a daily pill-taking routine, and receive …

This study tests a wearable device that tracks heart rate, breathing, activity, and fluid buildup in people recently hospitalized for heart failure. 800 participants will either get standard care or standard care plus the device for 90 days. The goal is to see if early alerts fro…

This study tests whether the drug vericiguat can improve right heart function and reduce tricuspid regurgitation in 100 adults with heart failure and reduced pumping ability. Participants take vericiguat daily for 9 months, with regular heart scans and walking tests to measure ef…

This study compares two ways to guide stent placement during emergency treatment for a severe type of heart attack (STEMI). About 2,500 patients will be randomly assigned to receive either standard X-ray guidance or ultrasound guidance (IVUS) during the procedure. The goal is to …

This trial tests whether a specialized scoring balloon, called Naviscore, can better prepare calcified coronary arteries before placing a drug-eluting stent. Hardened plaques often prevent stents from expanding fully, raising risks of re-narrowing or clots. About 200 adults with …

This study tests whether using detailed PET-CT scans to guide where a pacemaker lead is placed can improve heart function in 20 people with heart failure. Participants will receive a standard pacemaker, but the lead position will be chosen based on scan data. The goal is to see i…

This study tests whether patients with a heart pump (LVAD) can safely stop taking aspirin while continuing warfarin. The goal is to reduce bleeding problems without increasing dangerous clots. About 370 participants will be randomly assigned to receive either aspirin or a placebo…

This study looks at 240 adults having a major heart attack (STEMI) when the standard emergency procedure to open the blocked artery is expected to be delayed by over an hour. Half will get a clot-busting drug (tenecteplase) right away, followed by the procedure within 2-24 hours.…

This study compares a moderate statin (pitavastatin) combined with ezetimibe against high-intensity statins (atorvastatin or rosuvastatin) in patients aged 75+ with coronary artery disease who need a stent. The goal is to see if the combo is just as good at preventing heart attac…

This study looks at a special stent (a small mesh tube) coated with a drug called sirolimus, used to open blocked heart arteries. Researchers will follow 300 adults who received this stent during a standard heart procedure to see how safe and effective it is over 5 years. The mai…

This study tests whether measuring sodium in urine can help doctors give the right amount of diuretics (water pills) to people hospitalized with worsening heart failure. About 260 adults will be split into two groups: one gets standard care, the other gets treatment guided by uri…

This study looks at a device called ShortCut that splits old heart valve leaflets before placing a new valve inside it. The goal is to keep the arteries open and prevent blockages. About 150 people with aortic stenosis who are at risk for this complication will take part. Researc…

This study will test if taking oral azithromycin pills for three days each month works as well as getting a monthly penicillin shot to prevent rheumatic heart disease from getting worse. The trial plans to enroll 474 Nigerian secondary school students aged 10-18 with mild or mode…

This study tests whether the diabetes and weight-loss drug tirzepatide (Mounjaro) can reduce the chance of atrial fibrillation coming back after a heart procedure called catheter ablation. About 602 adults with obesity and a type of heart failure (HFpEF) will get either tirzepati…

This study will enroll 30,000 adults in China with atrial fibrillation (a type of irregular heartbeat) that hasn't improved with medication. They will receive a new type of catheter treatment called pulse-field ablation. Researchers will track their health for up to 10 years to s…

This study tests whether a structured heart-health program can improve heart outcomes in 800 cancer survivors who have heart problems or high heart risk. The program includes exercise, nutrition advice, stress support, and risk-factor management over 12 months. Researchers will c…

This study tests a step-by-step treatment plan for people with a narrowed aortic valve who also have leaky mitral or tricuspid valves. After a minimally invasive procedure to fix the aortic valve, doctors will check if the other valves still leak badly. If so, additional procedur…

This study compares a stepwise blood-thinning approach to the standard method in 424 patients with atrial fibrillation who are at high risk for stroke and need a heart device like a pacemaker. The stepwise plan involves stopping the blood thinner one day before surgery and restar…

This study will compare a newer, less invasive heart procedure called hybrid revascularization to standard coronary artery bypass grafting (CABG) in over 1,000 people with multiple blocked heart arteries. The hybrid approach combines a small incision to graft a key artery with st…

This study tests a non-invasive radiation treatment called STAR for people with a dangerous fast heart rhythm caused by heart scarring. Instead of using medications or a catheter procedure, a single targeted dose of radiation is delivered to the scarred area. The goal is to see i…

This study looks at whether adding a small amount of salt (3 grams daily) to the diet can help people with chronic heart failure who have low blood sodium levels. Researchers will compare salt pills to a placebo in 30 adults over three months. The goal is to see if salt improves …

This study looks at whether starting blood thinners (DOACs) is safe and effective for people who have had a stroke, but also have a history of a brain bleed and an irregular heartbeat (atrial fibrillation). About 852 participants will be randomly assigned to receive either a bloo…

This study looks at whether moderate treadmill walking can improve how children aged 4 to 6 with surgically corrected acyanotic congenital heart disease walk, balance, and move. Eighty children will take part, with some doing treadmill sessions four times a week for 10 weeks. Res…

This pilot study tests two ways of running a temporary heart pump (Impella CP) during a high-risk procedure to open blocked heart arteries in patients with weakened heart muscle. Fifty patients will be randomly assigned to either an automatic mode that adjusts flow or a fixed low…

This study compares two types of pacemaker procedures in adults with heart failure and atrial fibrillation who are not candidates for rhythm control. All participants will receive a heart ablation, then be randomly assigned to either conduction system pacing or standard cardiac r…

This study tests a procedure called renal denervation, which uses a catheter to calm overactive nerves in the kidneys, in 1,000 people with both resistant hypertension and multivessel coronary artery disease. Participants will undergo the procedure during a planned heart stent op…

This study tests whether a new catheter ablation system using pulsed field energy can better control persistent atrial fibrillation (AF) by targeting low-voltage areas in the heart and isolating the superior vena cava, in addition to standard pulmonary vein isolation. About 618 a…

This study tests a new approach for women with chest pain who don't have blocked arteries. Doctors will use special tests to find the exact cause of the pain, then give each woman a personalized treatment plan. The goal is to see if this tailored approach improves symptoms and qu…

This study compares 1 month versus the standard 6 months of dual antiplatelet therapy (two blood thinners) in people who had a balloon procedure for small coronary artery disease. About 1,484 adults with stable angina or silent ischemia will be randomly assigned to either short o…

This study tests three different ways to remove excess fluid in people with worsening heart failure. Participants will receive intravenous furosemide alone, or combined with either acetazolamide or hydrochlorothiazide. The goal is to see which combination works best and is safest…

This study tests a new way to treat atrial fibrillation (AFib), a condition where the heart beats irregularly. Doctors will use pulsed field ablation (PFA) instead of heat or cold to create scars in the heart and block bad signals. They will also use a special 3D ultrasound syste…

This study tests whether the drug propranolol can prevent heart injury after breast cancer surgery in women who also have high blood pressure or angina. One hundred participants will either receive propranolol before surgery or standard care. Researchers will measure heart stress…

This trial tests the drug istaroxime in 600 adults with mild to moderate cardiogenic shock caused by acute heart failure. Participants receive a 48-hour IV infusion of istaroxime or a placebo, plus standard care. Researchers measure changes in blood pressure, breathing, and overa…

This study tests whether the drug finerenone can reduce scarring in the heart muscle and improve heart structure and function in people with heart failure. About 104 adults with mild to moderate heart failure will receive either finerenone or a placebo for 6 months. The main goal…

This pilot study checks if a bigger trial on low-dose aspirin for people with early, symptom-free coronary artery disease can be done. It will enroll 48 adults with signs of artery narrowing but no symptoms. The main goal is to see if doctors can recruit enough patients and if pa…

This study tests whether an early, aggressive approach—using a catheter to open and stent high-risk plaques seen on a CT scan—plus medication is better than medication alone for preventing heart problems. About 2,500 people with coronary artery disease will be randomly assigned t…

This study tests a new device that uses short electrical pulses to treat atrial fibrillation (AF), a common heart rhythm problem. About 320 adults with AF will receive this procedure to see if it safely restores normal heart rhythm for at least a year. The goal is to reduce sympt…

This study follows 30 adults with paroxysmal atrial fibrillation (PAF) who have or will get a special pacemaker. The pacemaker can detect irregular heartbeats early and send a painless pacing pulse to stop them. It also sends data to doctors remotely. Researchers will check how w…

This study tests a new technique called Dynamic Voltage Mapping (DVM) to better identify scar tissue in the heart that causes ventricular tachycardia (VT), a life-threatening heart rhythm. The approach uses catheters to create a personalized electrical map, aiming to guide ablati…

This study tests whether the drug finerenone can help people with heart failure who have had a heart valve replacement (TAVI). About 2,800 older adults will be randomly assigned to receive finerenone or a placebo. The goal is to see if the drug lowers the chance of death or worse…

This study tests whether an external abdominal tourniquet can temporarily block blood flow to the lower body during cardiac arrest, redirecting it to the brain and heart. Researchers will try it on 5 adults with non-traumatic cardiac arrest outside a hospital. The goal is to see …

This study tests whether a potassium binder called Sodium Zirconium Cyclosilicate can help heart failure patients take higher, more effective doses of a standard medication (aldosterone receptor antagonist) without dangerous potassium spikes. About 110 adults over 70 with heart f…

This study tests whether creating a small opening between the upper heart chambers during mitral valve repair can prevent heart failure symptoms after surgery. Researchers will compare 50 patients who get the extra opening to those who have standard surgery alone. The goal is to …

This study compares two CPR methods for newborns with cardiac arrest: a new technique that combines chest compressions with sustained lung inflation versus the standard 3:1 compression-to-ventilation ratio. Researchers will enroll 554 newborns across multiple hospitals to see whi…

This study compares a new stent that releases sirolimus and ascorbic acid (vitamin C) to a standard everolimus-releasing stent in over 2,000 people with coronary artery disease. The goal is to see if the new stent is as good at preventing heart-related complications like death, h…

This study tests whether mirabegron, a drug typically used for overactive bladder, can reduce dangerous heart rhythms in people with heart disease. Twenty adults with an implanted defibrillator and frequent ventricular tachycardia will take the drug for two months. Researchers wi…

This registry follows 1,000 adults with mitral regurgitation who receive the MitraClip G5, a device that repairs the heart valve without open-heart surgery. Researchers will measure how well the procedure reduces valve leakage and improves symptoms like shortness of breath. All d…

This study compares a newer pacing method called Left Bundle Branch Area Pacing (LBBAP) with the standard coronary sinus pacing for cardiac resynchronization therapy in 44 adults who have both permanent atrial fibrillation and heart failure. The goal is to see if LBBAP better imp…

This study will compare norepinephrine and dopamine as the first drug given to adults with cardiogenic shock, a life-threatening condition where the heart can't pump enough blood. About 512 participants will be randomly assigned to one of the two drugs. The goal is to see which d…

This study tests whether adjusting diuretic doses based on urine sodium levels improves outcomes for people hospitalized with acute heart failure and severe fluid buildup. About 270 participants will be randomly assigned to either standard care or a strategy where diuretic doses …

This pilot study tests a long-acting antibiotic called oritavancin for treating gram-positive heart infections, such as infective endocarditis. The goal is to see if weekly IV doses can replace the usual weeks-long hospital stays and daily antibiotics. The study will enroll 20 ad…

This study tests if using only drug-coated balloons is as safe and effective as stenting for treating blocked heart arteries at branch points. About 272 people with chronic coronary syndrome will be randomly assigned to one of the two treatments. Researchers will track deaths, he…

This study tests whether removing blood clots from heart arteries during emergency treatment can improve long-term heart health. About 6,760 adults having a severe heart attack will be randomly assigned to get standard care or standard care plus clot removal. Researchers will tra…

This early study tests a special cap that shines near-infrared light on the heads of infants who have had a cardiac arrest in the hospital. The light is meant to reduce brain injury caused when blood flow returns. The trial will include 30 infants with heart disease and will chec…

This study tests whether a drug-coated balloon (DCB) is as safe and effective as a drug-eluting stent (DES) for treating large blockages in heart arteries. About 2,492 patients will be randomly assigned to receive either a balloon or a stent, guided by advanced imaging. The goal …

This trial compares two latest-generation heart valves (SAPIEN 3 Ultra Resilia and Evolut FX) in 200 patients with severe aortic stenosis. Participants will be randomly assigned to receive one valve during a standard procedure and followed for one year. The goal is to see which v…

This study tests a special pacing method for people with heart failure and a type of heart block. The goal is to see if pacing a specific area of the heart can improve heart function and quality of life. About 120 adults with heart failure and reduced pumping ability will partici…

This study tests whether a drug-coated balloon is as good as or better than a drug-eluting stent for people with multiple blocked heart arteries. About 892 adults with stable heart disease or recent heart attack will be randomly assigned to one of the two treatments. The goal is …

This study is for people who have chest pain and shortness of breath but no blockages in their main heart arteries. The likely cause is a problem with the heart's tiny blood vessels, called coronary microvascular dysfunction (CMD). The study will test treatments tailored to how e…

This study tests whether staying alcohol-free for six months after a heart ablation procedure can reduce the return of atrial fibrillation (AF), a common heart rhythm problem. Researchers will enroll 414 adults who drink at least three alcoholic beverages per week and are schedul…

This study tests whether a smartphone app powered by artificial intelligence can help adults recover after heart surgery. 500 patients will either use the app plus standard care or standard care alone. The app gives personalized advice on medications, spotting complications early…

This trial is for people whose surgically implanted aortic heart valve has stopped working properly. It compares two types of replacement valves placed through a tube in the leg (TAVI): a newer self-expanding valve (Hydra) versus standard balloon-expandable valves (Sapien or MyVa…

This study tests a drug called sotatercept in 40 adults with congenital heart disease and Eisenmenger syndrome, a serious condition where blood flow in the lungs is blocked. The drug is given as a shot every three weeks for 24 weeks. The goal is to see if it safely lowers pressur…

This study tests whether the drug nicorandil can improve blood flow in the heart's tiny vessels after a heart attack. About 170 patients having emergency angioplasty will receive either nicorandil or a placebo directly into their heart artery. The goal is to see if nicorandil red…

Researchers are testing whether a smartphone app called Stethophone can help primary care doctors find moderate or severe aortic stenosis in adults aged 70 and older. The app turns a phone into a digital stethoscope and analyzes heart sounds for murmurs that may signal the condit…

Researchers at Corewell Health West are testing whether medical assistants can use a handheld ultrasound device to estimate heart pumping function in people with new heart symptoms. The trial enrolls up to 100 adults at rural outpatient clinics who have not had a recent echocardi…

Researchers are studying whether the total time from heart attack symptom onset to balloon inflation during angioplasty helps predict contrast-induced nephropathy, a kidney complication that can occur after the procedure. The trial enrolls 400 adults with ST-segment elevation myo…

Researchers are testing a soft, wearable ultrasound patch that sticks to the chest and continuously images the heart in adults and children with severe heart conditions in intensive care. The study compares heart function measurements from the patch with results from standard bed…

Researchers at Massachusetts General Hospital are studying whether molecular imaging and detailed biological profiling can predict how quickly aortic stenosis gets worse. The trial enrolls 100 adults with mild to moderate calcific aortic stenosis. Participants receive a baseline …

Researchers at Assiut University Hospitals are studying how well fetal heart scans before birth match the heart diagnoses babies receive after delivery. The study includes pregnant women referred for fetal echocardiography and newborns with confirmed critical congenital heart dis…

Researchers are testing whether a non-invasive device that reads the heart's magnetic signals can help emergency department doctors tell high-risk from low-risk chest pain. The study enrolls adults 22 and older who arrive with symptoms suggesting a possible heart attack and who f…

Acute kidney injury is a common complication after coronary artery bypass grafting. This observational study examines whether two measurements from kidney Doppler ultrasound, the renal augmented velocity index and the renal resistive index, can predict which patients will develop…

Researchers are testing the Circle Safe System, a device that stimulates the phrenic nerve and records the diaphragm's electrical response during pulmonary vein ablation for atrial fibrillation. The study enrolls up to 50 adults scheduled for this procedure. All participants rece…

Researchers are testing whether continuous heart monitoring can lower unplanned hospital visits in adults with heart failure who have never shown signs of atrial fibrillation. One group receives a small monitor implanted under the chest skin, another uses a handheld device for we…

Researchers are testing whether adding organ Doppler ultrasound to standard echocardiography helps doctors better manage a common heart vessel problem in preterm infants. The trial enrolls 88 premature babies born before 34 weeks or weighing under 1800 grams. Half receive standar…

Researchers at Turku University Hospital are testing a PET imaging tracer called Al[18F]F-NOTA-folate to see how well it detects two heart conditions: cardiac sarcoidosis, an inflammatory disease of the heart muscle, and infective endocarditis, an infection of the heart valves. T…

Researchers at Assiut University are investigating whether the severity of erectile dysfunction mirrors the severity of coronary artery disease in men aged 18 to 50. The study enrolls 120 men who are undergoing coronary angiography for suspected or confirmed heart conditions. Par…

This pilot study will test whether an AI-assisted ultrasound device can help emergency doctors quickly detect heart failure in patients with symptoms. About 84 adults visiting the ER with signs of heart failure will be enrolled. The goal is to see if this approach is practical an…

This study will test a new type of CT scanner that uses silicon-based detectors to take detailed pictures of the heart. The goal is to see if it can provide clearer images of coronary arteries while using less radiation and contrast dye than current scanners. About 1,000 adults r…

Researchers are testing whether an open-source artificial intelligence model can measure coronary artery calcium on routine chest CT scans that were not originally taken for heart imaging. The study uses existing scans from about 1,950 people at a German hospital, including patie…

Researchers are testing a new device called KV-PREDICT that sits on the chest, over clothing, and records heart signals for about 10 seconds. The study includes 120 adults with heart failure across different severity levels. The goal is to see if the device can capture clear, rep…

This study tests whether a special PET-CT scan using a drug called evuzamitide can detect signs of cardiac amyloidosis in people whose standard heart scans were unclear but who have high levels of a blood marker called TAD1. About 25 adults with heart failure or a genetic risk fo…

Researchers at Mayo Clinic are testing whether people who have a type 2 heart attack, without major blockages in the large heart arteries, are more likely to have disease in the tiny blood vessels of the heart. The study uses a special X-ray procedure called coronary reactivity t…

This study looks at whether taking a tiny tissue sample from the heart during a pacemaker or defibrillator implant can help diagnose transthyretin cardiac amyloidosis (ATTR-CM), a condition where abnormal proteins build up in the heart. The trial enrolls people aged 65 and older …

This trial tests whether an AI-guided handheld ultrasound, used during routine primary care or geriatrics visits, can detect serious heart valve disease and weak heart muscle in adults aged 65 to 85 who have no known heart problems. Half of the participants will receive this quic…

This trial compares two blood-test strategies for diagnosing heart attacks in people with chest pain: the standard approach of testing at arrival and again 3 hours later, versus an accelerated approach testing at arrival and again after just 1 hour. The goal is to see whether the…

This trial tests whether a smartphone app called Antshrike, paired with a smartwatch, can predict heart attacks or strokes within 3-4 days in people at high risk. Participants aged 40 to 79 with existing heart disease or elevated risk will wear the smartwatch for 18 months while …

This study explores whether the electrical signal measured by a pacemaker or defibrillator during implantation can help identify cardiac amyloidosis — a condition where abnormal proteins build up in the heart. Researchers will enroll 242 adults aged 65 and older who already need …

This trial tests whether an accelerated heart MRI scan, taking only 15 to 20 minutes, can diagnose coronary artery disease as accurately as the standard 45- to 50-minute scan. About 2,000 adults with suspected coronary heart disease will be randomly assigned to receive either the…

This study tests whether an artificial intelligence software called SMD-RVECG can predict the risk of atrial fibrillation with rapid ventricular response (a fast, irregular heart rhythm) within the next two hours. Researchers will analyze 348 existing single-lead electrocardiogra…

This study explores whether a newer type of SPECT/CT scan can accurately measure blood flow in the heart, similar to the more expensive and less available PET scan. Researchers will compare the two imaging methods in 30 adults with coronary artery disease who are already schedule…

This study tests whether an artificial intelligence system called AngioAI+ can accurately diagnose two types of coronary artery disease using standard angiogram images. The research involves 620 adults with suspected coronary artery disease who are already scheduled for an angiog…

This study evaluates whether a quick blood test for NT-pro-BNP, done in a doctor's office, can help diagnose heart failure earlier in rural areas where specialists are scarce. The test is given to people over 60 with symptoms like shortness of breath or swelling. Researchers will…

This study evaluates a simple questionnaire designed to detect decompensated heart failure—a sudden worsening of heart failure—in people aged 55 and older on Réunion Island. Researchers will compare the questionnaire's results with standard heart exams (echocardiogram, ECG, and c…

This study tests a small, handheld ECG device that records heart activity when held against the chest and sends the data via smartphone to a doctor. Researchers will enroll 594 adults with known or suspected heart conditions to see if the new device is as good as the standard 10-…

This study explores whether an additional CT scan of the heart, taken right after a standard scan for lung clots, can effectively detect blood clots in the left atrial appendage (LAA) in people with atrial fibrillation. Currently, detecting these clots requires a more involved pr…

This study tests whether an artificial intelligence (AI) program can help doctors identify a rare heart condition called cardiac amyloidosis on routine echocardiograms. The condition causes protein buildup in the heart muscle, leading to heart failure, and is often missed early o…

This study explores whether a PET/MR scan using a radioactive tracer called 18F-Florbetaben can detect amyloid deposits—abnormal protein clumps that can damage organs—in people with certain blood disorders. Participants receive a single injection of the tracer followed by a whole…

This study tests a new cardiac MRI method called Free-Running Framework (FRF) that lets patients breathe normally and skips the sticky ECG electrodes. It captures a 3D image of the whole heart in one go, potentially making scans faster and more comfortable. Researchers will compa…

This study will test whether a faster type of bone scan (CZT-SPECT) can accurately diagnose transthyretin cardiac amyloidosis, a serious heart condition. Researchers will compare the new scan with the standard method in 200 patients. If it works, it could make diagnosis quicker a…

This study tests whether an AI tool called RADAR can help nurses in low-resource settings detect rheumatic heart disease more accurately using echocardiography. The goal is to make screening easier to scale up worldwide. The trial will enroll 62 nurse screeners at participating f…

This pilot study will test whether breathing controlled amounts of carbon dioxide (CO2) can help doctors see blood flow in the heart using MRI, without needing standard contrast dyes. Thirty adults with known or suspected coronary artery disease will take part. The goal is to che…

This study will see if community pharmacies can effectively screen people aged 65 and older for atrial fibrillation, a heart condition that raises stroke risk. Trained pharmacists will use a small, portable ECG device to record a 30-second heart reading. If the result is abnormal…

This pilot study tests whether a computer-controlled device that delivers precise gas mixtures can safely help identify coronary artery disease in people without known heart problems. Eighty healthy adults aged 45 and older will breathe different gas concentrations while their vi…

This study aims to see if a new radioactive dye can detect early signs of a heart condition called amyloidosis in people who carry a TTR gene mutation but have no heart failure symptoms. About 80 adults aged 30-80 will receive an injection of the dye and then have a PET/CT scan t…

This study looks at whether a special heart scan (CZT-SPECT) can better predict heart attacks, strokes, and heart failure in people with chronic kidney disease. Current tests often miss heart problems in these patients. The study will follow 283 participants for two years to see …

This study tests whether a computer model can find signs of a heart condition called cardiac amyloidosis in bone scans that were done for other reasons. Researchers will look back at 57 patients' scans to see if the model can correctly identify those with the disease. If it works…

This study tests whether a noninvasive skin test can accurately diagnose microvascular heart problems in women who have chest pain but clear major arteries. Researchers will compare skin blood vessel function with invasive heart measurements in 60 women. If the skin test works, i…

This study tests a new way to find a hidden heart condition called cardiac amyloidosis in people with atrial fibrillation (AF). Researchers will use AI to analyze EKGs and CT scans to spot early signs of the disease. About 500 adults with AF and certain warning signs will be spli…

This study tests advanced CT scans to find dangerous blockages in heart arteries without needing to insert a tube into the heart. About 142 adults with moderate blockages will get two types of CT scans, and results will be compared to the standard invasive test. The goal is to se…

This study tests whether using artificial intelligence (AI) along with a smartwatch and a heart monitor patch can find a hidden heart rhythm problem called atrial fibrillation (AF) in people who have had a stroke. AF can cause strokes, but it often comes and goes without symptoms…

Researchers are testing whether mild electrical stimulation of a nerve in the ear can prevent atrial fibrillation, a common irregular heartbeat, after off-pump coronary artery bypass surgery. Adults scheduled for this heart surgery receive either the stimulation plus standard car…

Chronic pain after heart surgery through a breastbone incision affects many patients and can last for years. Researchers are testing whether an ultrasound-guided nerve block, given after anaesthesia but before the first cut, can reduce the chance of chronic pain three months late…

Researchers in South Savo, Finland, invite residents turning 45, 50 or 55 to take a blood test that measures many small molecules at once. The test estimates each person's 10-year risk of type 2 diabetes, heart attack, stroke, chronic kidney disease and fatty liver disease. Peopl…

This study tests whether a numbing injection around a nerve cluster in the neck, given just before heart bypass surgery, can prevent a common complication called atrial fibrillation (irregular heartbeat) in the first week after surgery. About 450 adults scheduled for bypass will …

This trial tests whether a structured oral hydration plan—drinking at least 1,500 mL of fluid within 12 hours around the procedure—can reduce the risk of contrast-induced acute kidney injury (CI-AKI) in patients with ST-elevation myocardial infarction (STEMI) undergoing primary P…

This trial tests whether giving children aged 5 to 8 a twice-daily penicillin pill can prevent rheumatic heart disease, a serious condition that can damage heart valves. Researchers will compare children who take the antibiotic with those who do not, following them for three year…

This pilot study tests two non-invasive methods to keep the airways clear in adults who are unconscious or severely ill and need a breathing tube. One method uses a special tube with continuous low-pressure suction, and the other delivers a programmed 'artificial cough' through t…

This trial tests whether offering a seasonal flu vaccine to heart patients while they are still in the hospital, along with active counseling, increases vaccination rates compared to counseling alone. The study enrolls adults hospitalized for acute coronary syndrome or heart fail…

This study investigates whether screening older veterans (age 65 and older) who have a higher risk of atrial fibrillation—a condition where the heart beats irregularly—can reduce their chances of stroke, heart failure, or death. Participants selected for screening wear a small, w…

This study tests whether a drug called sotagliflozin can prevent heart, muscle, and fat damage caused by a common type of chemotherapy (anthracycline) in people with newly diagnosed lymphoma. About 60 adults who are scheduled to receive high-dose anthracycline will take either th…

This study tests whether giving high-flow oxygen through special nasal prongs during a less-invasive heart valve replacement (TAVR) can prevent low oxygen levels and breathing complications. About 452 older adults undergoing TAVR under sedation will be randomly assigned to receiv…

Researchers test whether adding inspiratory muscle training to a walking program helps adults on hemodialysis who also have atrial fibrillation. Participants do breathing exercises through a mouthpiece and walk for six minutes, while the study tracks heart rate, blood pressure, k…

Researchers are testing whether nurse-led lessons delivered through virtual reality or a tablet help people with coronary artery disease understand their heart risks and take their antiplatelet medicines as prescribed. The trial enrolls 54 adults aged 18 to 65 who have coronary a…

This study tests whether regular breathing exercises can improve symptoms of Postural Tachycardia Syndrome (POTS), a condition that causes dizziness and rapid heartbeat when standing. Twelve adults with POTS will practice breathing exercises daily for four weeks while researchers…

Researchers at Emory University are testing whether a fully provided, unrefined, polyphenol-rich plant-based diet can improve blood vessel function in adults with coronary microvascular dysfunction, a condition where the heart's small vessels cannot deliver enough blood despite c…

Researchers compare two pulsed-field ablation catheters, the Sphere-9 lattice-tip and the FARAPULSE pentaspline, in people with symptomatic persistent atrial fibrillation. All participants undergo pulmonary vein isolation, the only allowed ablation lesion set, and receive an impl…

Emergency medical services teams use defibrillator pads to shock the heart during out-of-hospital cardiac arrest. The VECTORS trial compares two standard pad placements: one with pads on the front and back of the chest, and one with pads on the front and side. Researchers will tr…

This study tests whether a structured 5-week cardiac rehabilitation program can improve exercise ability and quality of life in 40 adults with cardiac amyloidosis. Participants will undergo supervised aerobic and strength training five days a week, with tests before and after the…

Researchers are studying whether donor hearts can be safely stored and transported at 10°C using a portable cooler called the X°Port Heart Preservation System. The trial enrolls up to 25 adults who are listed for heart transplantation. Participants receive a standard heart transp…

Researchers are testing whether giving naloxone soon after resuscitation starts can help people whose hearts stop outside the hospital after an opioid overdose. The trial enrolls adults in out-of-hospital cardiac arrest who are at risk of opioid involvement and who have received …

Researchers are testing a cardiac pulsed field ablation system that uses a spherical catheter to treat symptomatic, recurrent paroxysmal atrial fibrillation that has not responded to drugs. The trial enrolls 284 adults and randomly assigns them to either the investigational pulse…

Adults with congenital heart disease often develop supraventricular tachycardia, a fast or irregular heartbeat that can be hard to treat because of unusual heart anatomy or prior surgeries. This study follows 40 adults who have a cardiac ablation procedure using the MAGiC ablatio…

Researchers are testing a new defibrillator lead called the Medtronic OmniaSecure Model 3930M in people who need a defibrillator and also have moderate or worse tricuspid valve regurgitation. The lead is placed through the middle cardiac vein, a different route than usual, with t…

Researchers are testing a device called the FlowMod System in people hospitalized with acute decompensated heart failure. The device partially blocks blood flow in the large veins that return blood to the heart, which may reduce the heart's workload. The trial will check whether …

Researchers are testing whether squeezing a stress ball during femoral arterial sheath removal after coronary angiography can reduce pain and anxiety and improve patient satisfaction. The trial enrolls 34 adults who had a stent or balloon angioplasty through the femoral artery. H…

This study tests whether a trained community health worker, who provides remote support, can reduce the burden and improve satisfaction for rural caregivers of older veterans with serious illnesses like dementia or cancer. About 480 care partners will be randomly assigned to rece…

This trial tests a program called HEROIC, designed to support people caring for someone with advanced heart failure. Caregivers receive five one-on-one video sessions with a nurse over 10 weeks, focusing on mental health, self-care, and connecting with community and palliative re…

This trial tests a 12-week spiritual nursing program called SHS-Zikir, which combines guided spiritual sessions with Islamic dhikr practices, for Muslim adults with heart failure. The program aims to strengthen a person's connection with Allah, self, others, and the environment t…

This trial tests whether guided imagery, a relaxation technique using audio recordings, can reduce anxiety and improve sleep and comfort in adults with acute coronary syndrome, such as a heart attack, who are in a cardiac intensive care unit. Participants will be randomly assigne…

This study tests two ways to deliver a group training program for caregivers of children with autism in low-resource areas. The program aims to reduce caregiver stress and improve the child's communication and behavior. About 320 caregivers of children aged 2 to 8 will take part.…

This trial tests a program that gives heart failure doctors, nurses, and social workers a structured guide for having serious conversations with older patients and their care partners. The goal is to help care teams understand what patients hope for, worry about, and know about t…

This trial tests whether listening to a personalized music playlist during coronary interventional procedures can reduce anxiety and pain. About 208 adults with acute coronary syndrome will be randomly assigned to either standard care or standard care plus music through wireless …

This trial tests whether wearing a light-blocking eye mask at night can improve sleep quality and reduce delirium in patients recovering from coronary artery bypass graft (CABG) surgery. About 100 adults scheduled for elective CABG will wear the mask during nighttime sleep, and t…

This trial tests whether placing a small catheter near the breastbone to deliver local anesthetic can reduce pain after coronary artery bypass surgery. Half of the participants will receive this catheter-based pain relief, while the other half gets standard care. Researchers will…

This study tests whether a mobile health program can help people with heart failure increase their physical activity and stay active. The program includes a smartphone app for goal-setting and self-monitoring, an AI-based health coach trained in motivational interviewing, and occ…

This trial tests whether an 8-week daily resistance exercise program can reduce chest pain and improve daily function in women who have angina without blocked coronary arteries (ANOCA). Around 76 to 152 women across 13 hospitals in the UK and Netherlands will be randomly assigned…

This trial tests whether a targeted nerve block, called an adductor canal block, can reduce leg pain after coronary artery bypass grafting (CABG) when a leg vein is used as a graft. About 120 adults scheduled for CABG will receive either the block with a numbing medication or a s…

This study looks at people with migraines who also have a small hole in the heart (PFO). Participants first take a blood-thinning drug (prasugrel) to see if their migraines improve. Those who respond are randomly assigned to either continue the drug alone or have a procedure to c…

This study tests whether injecting a local anesthetic near the stellate ganglion in the neck, guided by ultrasound, can improve how patients feel after heart surgery. The block temporarily calms part of the nervous system, which may reduce pain, improve sleep, and lower the risk …

This trial investigates whether a structured, moderate-intensity cardiac rehabilitation program is safe for people with arrhythmogenic cardiomyopathy who carry high-risk genetic mutations. Participants will be randomly assigned to either the exercise program or standard physical …

This study tests a 13-week remote stress recovery program for people who had a heart attack before age 55 and still feel distressed. The program includes online sessions with a therapist, a workbook, and videos. The goal is to see if a larger trial is possible by checking how man…

This study compares two ways to sedate patients during a heart scan and electric shock treatment for atrial fibrillation. Currently, a cardiologist gives mild sedation for the scan, but an anaesthesiologist must give stronger sedation for the shock, causing delays. Researchers wa…

This study tests a mobile mindfulness program called Lift for people who survived a serious illness in the ICU and now struggle with depression, anxiety, or stress. About 450 adults will use either the Lift app or a health education app for 6 months. The goal is to see if the min…

This study tests whether giving magnesium along with the standard drug metoprolol can quickly lower a dangerously fast heart rate in people with atrial fibrillation or atrial flutter. About 196 adults in the emergency room will receive either magnesium or a placebo, plus metoprol…

This study tests whether a 6-month digital education program—with short videos on exercise, healthy eating, and stress management—can improve exercise capacity and quality of life in adults with heart failure and overweight or obesity. Fifty-two participants will be randomly assi…

This study tests whether injecting a long-acting numbing medicine (bupivacaine) through chest tubes can safely reduce pain and lower the need for strong painkillers after heart bypass surgery. Sixty adults will receive either the numbing medicine or a saltwater placebo whenever t…

This study tests whether taking at least 4 tablespoons of extra-virgin olive oil daily for 12 weeks, alongside standard cardiac rehab, is feasible and helpful for people with heart failure with reduced ejection fraction. Researchers will measure changes in diet, exercise capacity…

This study tests whether structured play activities, done with a parent, can reduce anxiety in children with congenital heart disease before their surgery. About 204 children aged 0-12 will be randomly assigned to either receive therapeutic play plus standard care, or standard ca…

This study compares deep sedation using a combination of three drugs (dexmedetomidine, remimazolam, and remifentanil) to standard general anaesthesia for patients undergoing a procedure to treat atrial fibrillation (an irregular heartbeat). The goal is to see if deep sedation can…

This study tests whether a 12-week home exercise program, guided by a mobile app and smartwatch, can improve exercise capacity and quality of life in people with a left ventricular assist device (LVAD). About 78 participants who recently got an LVAD and cannot attend hospital reh…

This study tests whether playing motion-sensing Nintendo Switch games can help children and teens with congenital heart disease become more physically active. Thirteen participants aged 8-18 will wear activity monitors and follow a 12-week exergame program with coaching and suppo…

This phase 2 trial tests whether mirabegron, a drug currently used for overactive bladder, can reduce symptoms of Postural Orthostatic Tachycardia Syndrome (POTS). Thirty-six adults with confirmed POTS will receive either mirabegron or a placebo. The main goal is to see if the dr…

This study tests whether adding a special breathing exercise device (IMT Threshold) to standard rehab can help people recover faster after coronary artery bypass graft surgery. The goal is to reduce time in the hospital and prevent serious breathing complications like pneumonia. …

This study tests whether a structured nursing program—including education, emotional support, and follow-up calls—can help heart bypass patients and their caregivers adapt better during recovery at home. About 40 adults who recently had heart surgery and their primary caregivers …

This study tests whether an 8-week home telerehabilitation program, with real-time coaching and vital sign monitoring, can improve physical function and reduce frailty in older adults with heart failure. Seventy participants will be randomly assigned to either the telerehab progr…

This study looks at 224 adults with a type of irregular heartbeat called paroxysmal atrial fibrillation who are getting a first-time heart procedure called pulsed-field ablation. Researchers want to see if using conscious sedation (being awake but relaxed) is safer than general a…

This pilot study will test a new method to see how two pain medicines, naproxen and pregabalin, work in healthy adults. Up to 25 participants will receive each medicine and a placebo in random order. They will undergo several short, controlled pain tests, like a cold water hand b…

This study screens up to 1,000 people with personal or family histories of certain cancers to see if they qualify for ongoing genetics research at the National Cancer Institute. Participants fill out a 15-20 minute online survey about their health and family history. No treatment…

This study will take standard heart CT scans from 1000 adults with structural heart disease and use a super-computer to create ultra-high-resolution images. The goal is to see if these enhanced images show more detail than the originals. No new treatments are being tested; it's a…

People with rheumatic heart disease and atrial fibrillation take warfarin to prevent strokes, but the drug only works safely when blood clotting stays in a narrow target range. Researchers at Assiut University are studying about 90 Egyptian adults on warfarin for at least six mon…

Researchers at Assiut University Hospitals are following 250 adults with chronic heart failure and reduced ejection fraction who are on or starting guideline-directed medical therapy. Over three months, the team measures changes in heart pumping function, kidney filtration, quali…

Researchers want to know whether caffeine consumption is linked to irregular heartbeats and daily physical activity in adults with heart failure, reduced left ventricular ejection fraction, and an implantable cardioverter-defibrillator (ICD). About 170 participants fill out a one…

Researchers at Assiut University Children Hospital are studying how often children who come to the emergency department have an abnormal heart rhythm. The study includes children aged 1 month to 18 years who arrive with symptoms such as palpitations, chest pain, fainting, or trou…

This study will track 320 people in Hong Kong who have a heart attack complicated by cardiogenic shock, a life-threatening condition where the heart can't pump enough blood. Researchers will collect data on standard treatments, including the use of a heart pump called Impella, to…

This study will observe 3,000 adults in China with a type of heart failure called HFpEF who are starting the drug Jardiance. Researchers will track how many patients are hospitalized for heart failure or die from heart-related causes over time. The goal is to see how effective an…

This study will collect real-world information on the VERAFEYE system, a device that creates 3D images of the heart during procedures to treat atrial fibrillation (an irregular heartbeat) and to close the left atrial appendage (a small pouch in the heart). About 50 adults will ta…

Cardiac arrest survival in hospitals stays low, and staff on regular wards rarely face these emergencies. Researchers are studying a simulation-based self-training program that lets nurses, doctors, and assistants practice CPR without leaving their department. The study looks at …

This study will use transcranial Doppler (TCD) ultrasound to measure blood flow in the brains of 100 people who had a stroke and underwent endovascular therapy (clot removal). The goal is to see if TCD readings can predict complications like bleeding or brain swelling in the days…

Researchers are running a national registry of hospitalized patients aged 60 and older who have moderate or severe heart valve disease. The study records the type of valve problem, symptoms, other conditions, treatments received, and complications. By comparing this group with pa…

Researchers are studying whether the Evolut FX Plus replacement heart valve allows doctors to reach the coronary arteries after a TAVI procedure. The trial enrolls about 122 people aged 65 and older with severe aortic stenosis. Right after the valve is implanted, doctors try to t…

This pilot study is testing whether wearable patch monitors can help detect heart problems early in adults undergoing treatment for breast cancer, blood cancers, or multiple myeloma. Participants will wear two patches—one that tracks heart rhythm continuously and another that rec…

This study tests whether artificial intelligence software can predict if atrial fibrillation will return within a year after a standard ablation procedure. Researchers will use the Volta AF-Xplorer II software to map abnormal electrical areas in the hearts of 125 people with pers…

This pilot study tests a web-based decision aid for Black and White patients with atrial fibrillation who need to choose whether to take blood thinners to prevent strokes. The tool explains risks and benefits and asks about personal preferences. The study will check if the tool i…

This study will create a computer tool to predict which older adults are at high risk for serious problems after heart or blood vessel surgery. It will also test if special programs before and during surgery can help prevent confusion, heart issues, and death. About 1,200 people …

This study tests whether sending an electronic letter to people with heart disease and high cholesterol encourages them to get their cholesterol checked. Researchers will compare those who receive the letter to those who don't, using national health records to track results. The …

This study tests whether AI-generated avatar videos and a chatbot can better engage older Veterans in cardiovascular clinical trials compared to standard mailed letters. Veterans aged 65 and older with heart conditions will receive either a routine invitation or a link to a websi…

This study builds a registry of 400 women who have angina, or chest pain, even though their coronary arteries are not blocked. Doctors call this condition ANOCA, and it is more common in women than men, yet it has been under-studied. The registry will categorize different subtype…

This study looks at whether a specific heart ultrasound measurement, called left atrial reservoir strain, can better predict serious heart problems within 6 months after a non-ST-elevation heart attack (NSTEMI). Researchers will measure this strain in 150 patients and compare its…

This study looks at how ready people are to make lifestyle changes after having a heart attack treated with a stent. Researchers will ask participants who had a heart attack in the past six months to fill out questionnaires about their habits, quality of life, and emotional well-…

This study observes how supply chain problems affect the availability of intracardiac echocardiography (ICE) catheters, which are used during certain heart procedures. Researchers will track real-world procurement attempts, including delays, cancellations, and substitutions, to s…

This study follows 75 older adults having elective heart surgery to understand why some recover quickly while others face complications like delirium or slow recovery. Researchers will measure frailty, physical and mental function, and a blood marker of biological stress called G…

This study follows 7,500 children aged 5 to 8 who live in areas where rheumatic heart disease is common. Each child gets a heart ultrasound once a year for three years to check for early signs of the disease. Researchers will count how many children develop rheumatic heart diseas…

This observational study follows people with obesity-related heart failure to see how their heart performs during exercise, using stress echocardiography. It observes those who are taking GLP-1/GIP receptor agonists (like semaglutide or tirzepatide) as part of their routine care,…

This study investigates clonal hematopoiesis, an age-related condition where blood stem cells acquire mutations, and how it triggers inflammation linked to heart disease. Researchers will compare immune cells from healthy people, those with high-risk mutations, and patients with …

This study is a large international registry that will look back at the medical records of about 1,000 adults who were treated with the AngioVac system, a device that uses suction to remove blood clots, infected tissue, or other unwanted material from the heart and major blood ve…

This study is a large, real-world registry that will include over 10,000 people with coronary artery disease from more than 50 hospitals across China. The goal is to see how often a software tool called QFR, which analyzes angiogram images to guide treatment decisions, is used in…

This study aims to build a specialized AI model, called CorAI, for coronary artery disease (CAD). Researchers will collect de-identified medical data from about 640 patients with suspected or confirmed CAD to create a rich dataset. Using this data, they will develop and test CorA…

This study looks at whether a digital tool called Luscii is practical and acceptable for people with a rare heart condition called ATTR-CM. About 60 adults in Austria, Germany, and Italy will use a smartphone app and home devices to share health information with their care team. …

This study is a large, observational registry in Türkiye that will track the real-world practice and outcomes of a procedure called percutaneous coronary intervention (PCI) for chronic total occlusion (CTO) — a complete blockage of a coronary artery that has been present for at l…

This study investigates whether levels of a protein called neurofilament light chain (NFL) in the blood can predict neurological recovery in people who remain comatose after a cardiac arrest. Researchers will measure NFL at several time points over the first week in the ICU and c…

This study is building a biobank of blood samples and imaging data from 300 people with suspected inflammatory heart or autoimmune rheumatic diseases. Researchers aim to identify immune biomarkers that could predict major heart events like heart failure, stroke, or atrial fibrill…

This observational study will track 87 people who are already scheduled to receive treatment with the Recana Thrombectomy Catheter System for blocked veins in their legs. The goal is to see how safe the device is and how well it works at clearing the blockages during the procedur…

This trial explores whether a training program for general practitioners can improve how primary care clinics deliver palliative care to adults with advanced cancer, COPD, heart failure, or kidney disease. One family health unit will use the new approach—a 30-hour e-learning cour…

About one in three people who have open-heart surgery develop an irregular heartbeat called postoperative atrial fibrillation (POAF), which raises the risk of stroke and other complications. This study is testing whether a blood marker called lipoprotein(a), or Lp(a), can identif…

This study follows 100 adults with myotonic dystrophy (types 1 or 2) for two years to understand how muscle stiffness, daily function, and heart health change over time. Researchers will look back at up to 18 months of past medical records and then track participants with clinic …

This study tests a personalized, digitally supported prehabilitation program for adults waiting for elective cardiac surgery. Participants receive education, psychosocial support, nutritional advice, and home-based exercise guidance during the routine 6-10 week preoperative perio…

This trial investigates whether analyzing electrical signals from the heart during pulsed field ablation can tell doctors how well the catheter is touching tissue and whether the resulting scar will be permanent. About 60 people with paroxysmal atrial fibrillation will undergo th…

Septic shock is a life-threatening condition with high mortality. This study investigates whether patients with septic shock have a deficiency of angiotensin II, a hormone that helps regulate blood pressure. Researchers will measure hormone levels in blood and urine samples from …

This study looks at people with obstructive hypertrophic cardiomyopathy — a condition where the heart muscle is abnormally thick and blocks blood flow. Researchers want to see if certain abnormalities in the mitral valve or its supporting structures affect how well the drug mavac…

This study looks at how the stiffness and function of blood vessels change in people newly diagnosed with heart failure. Researchers will measure these factors at the start, after a few weeks of standard medication, and after a cardiac rehab program. All tests are non-invasive an…

This study looks at how atrial cardiomyopathy—a condition where the heart's upper chambers are damaged—relates to cardiovascular-kidney-metabolic (CKM) syndrome, a cluster of heart, kidney, and metabolic problems. Researchers will use non-invasive tests like ECG, echocardiography…

This study tests a cloud-based tool called ACT+ to help people in Uganda get follow-up care after a positive screening for rheumatic heart disease. Researchers will work with local providers to improve the tool and then see if it increases the number of people who complete a conf…

This study tests whether wearable devices and artificial intelligence can help personalize the timing of valve replacement in people with moderate to severe aortic stenosis who have no symptoms. Participants wear a smartwatch to track heart rate, activity, and blood pressure, and…

This study looks back at the medical records of 300 people with arrhythmogenic cardiomyopathy who have an implantable cardioverter-defibrillator (ICD) and have had dangerous heart rhythms. Researchers want to count how often ICD-related problems occur, such as lead failure or ina…

This study follows 100 adults with advanced heart failure for 2 years to understand how kidney function changes over time and how it relates to serious heart events like death or need for a transplant. Researchers will collect blood, urine, and stool samples, along with quality-o…

This study investigates whether measuring blood flow in the heart's smallest blood vessels (microcirculation) can help predict serious health events within a year after a person is hospitalized for acute myocarditis. Researchers will use a special technique during a standard hear…

This study follows 25,000 people referred to a specialized heart clinic with symptoms like chest pain or shortness of breath. Researchers will track which heart conditions are actually diagnosed and how patients are evaluated. The goal is to improve diagnostic accuracy and unders…

This study tests a new home monitoring system called AVATAR-SC that uses a digital avatar to collect voice recordings and symptom questionnaires from heart failure patients. The goal is to see if changes in voice can serve as early warning signs of worsening heart failure. Sixty …

This study will look at data from 918 adults who had planned heart surgery to find out why some develop atrial fibrillation, a common and serious irregular heartbeat. The researchers will also examine whether newer anesthesia methods, like a nerve block, might help protect agains…

This study looks at people with inflammatory bowel disease (IBD), including ulcerative colitis and Crohn's disease, to better understand their risk of serious heart problems like stroke and heart attack. Researchers will collect information on therapy, disease activity, lifestyle…

This study checks whether an Apple Watch Series 9 can accurately measure key health indicators—like oxygen levels and exercise capacity—in adults with heart conditions such as congenital heart disease, heart failure, or coronary artery disease. Participants wear the smartwatch du…

This study will follow 400 people who had a heart attack and have moderately reduced heart function (ejection fraction 35-50%). Participants will get a small implantable heart monitor to track their heart rhythm for up to 5 years. The goal is to identify markers that could predic…

This study looks at 150 people with persistent atrial fibrillation (a type of irregular heartbeat) who are scheduled for a heart procedure called ablation. Researchers want to see if levels of a protein called BDNF in the blood are linked to signs of heart muscle damage (atrial c…

This observational study will follow 600 adults with chronic or acute heart failure to see how biomarkers and other factors predict individual responses to standard medications. Participants will have assessments at the start and after 1, 3, and 6 months, with follow-up phone cal…

This study will follow 600 adults having off-pump heart bypass surgery to see how often memory and thinking problems occur afterward. Participants take a simple thinking test before and after surgery. The goal is to understand what factors might increase the risk of these problem…

This study aims to find out how common heart rhythm problems are in people with chronic kidney disease, both those on dialysis and those not yet on dialysis. Researchers will use a simple ECG test to check for abnormal heart rates and electrical changes. The goal is to better und…

This study follows 500 people with a type of heart failure called HFpEF, where the heart pumps normally but doesn't fill properly. Researchers will use heart ultrasounds, blood tests, and medical history to group patients into different subtypes. The goal is to better understand …

This study will observe 110 adults having planned heart bypass surgery. Researchers will record settings on the breathing machine during surgery and check if patients develop lung complications like pneumonia or need a breathing tube for too long. No new treatments are given—the …

This study tests a special blood pressure monitor that deflates very slowly, designed for people with a Left Ventricular Assist Device (LVAD). Researchers want to see if patients can use it easily at home and if it helps track their blood pressure accurately. About 50 adults with…

This study looks at whether placing patients face-down (prone) soon after heart surgery can improve how well the right side of the heart works. The idea is that this position helps open up collapsed parts of the lungs, making it easier for the heart to pump blood. About 80 adults…

This study will examine how the heart-lung machine used during cardiac surgery changes platelet function and metabolism. Researchers will take blood samples from 100 adult heart surgery patients at several time points. The goal is to link these platelet changes to post-surgery in…

This study will follow 500 people with severe aortic stenosis who need a heart valve replacement. Researchers want to see if a dedicated Heart Valve Unit—a team of heart specialists working together—can reduce confusion, delirium, and memory problems that sometimes happen after t…

This study compares two types of heart ablation for people with persistent atrial fibrillation: pulsed field ablation and radiofrequency ablation. The goal is to see which one causes fewer stomach problems after the procedure. Twenty participants will be matched by age and health…

This study will compare two common types of heart valves used in TAVI (a procedure to replace a narrowed aortic valve) to see which one sends fewer tiny particles to the brain during the procedure. 80 adults with severe aortic stenosis will be randomly assigned to receive either …

This study investigates whether a condition called clonal hematopoiesis of indeterminate potential (CHIP), which is an age-related change in blood cells, is linked to more severe heart damage in people who have had a major heart attack (STEMI). Researchers will test blood samples…

This study will compare five different pulsed field ablation systems used to treat atrial fibrillation (an irregular heartbeat). The goal is to see which system causes the fewest tiny clots (microemboli) that travel to the brain during the procedure. One hundred adults with atria…

This study follows 75 volunteer first responders who are alerted via a smartphone app to help in out-of-hospital cardiac arrests. Researchers want to understand how these stressful events affect the volunteers' mental health and whether a structured follow-up conversation can hel…

This study looks at 223 adults hospitalized with acute heart failure to see if changes in urine salt levels (sodium and chloride) can help doctors understand how well the body is getting rid of extra fluid. Participants will have blood and urine tests, heart ultrasounds, and chec…

This study will use brain electrodes (SEEG) and breathing monitors in 20 adults with drug-resistant epilepsy to map which brain areas control breathing during a challenge. The goal is to understand why some patients experience fatal breathing arrest after seizures (SUDEP). No tre…

This study tests whether using a CT scan to plan a heart stent procedure (PCI) makes it faster, safer, and more effective than the usual approach. About 200 adults with coronary artery disease will either get CT-guided planning or standard care. Researchers will compare procedure…

This observational study will follow 50 people with severe tricuspid regurgitation (a leaky heart valve) and reduced heart function who undergo valve repair using the PASCAL Precision System. The main goal is to see if, 12 months after repair, patients can take higher doses of st…

This study tests a new method to measure central venous pressure (a key heart health indicator) without inserting a catheter. Researchers will use a pressure cuff and Doppler sensor on the forearm of 30 children (ages 0-17) in the intensive care unit. The goal is to see if this n…

This observational study will collect blood samples from 25,000 adult ICU patients in Sweden to look for genetic variants linked to severe illness from infections, sepsis, or organ failure. Participants also give samples 3-6 months after leaving the hospital. The goal is to build…

This study examines whether volunteers alerted by a smartphone app can improve survival for people who have a cardiac arrest outside the hospital. Researchers will compare outcomes for about 5,200 adults who either did or did not receive help from these first responders. The goal…

This study will follow 1000 adults in China with severe coronary artery disease who are too high-risk for bypass surgery and need complex angioplasty. Researchers will collect data on their health, procedures, and outcomes for one year to see what factors affect survival and comp…

This study looks at whether a new, carefully designed plan for giving painkillers and sedatives to patients on ECMO (a life-support machine) is possible to use in hospitals. ECMO patients often face long-term problems like anxiety and memory issues, which may be linked to how muc…

This observational study in Mexico will follow 30 adults already taking tirzepatide for conditions like diabetes or obesity. Researchers will use MRI scans of the knees, CT scans of the heart, and body composition tests to see how the drug affects cartilage, heart fat, and overal…

This observational study will follow 3000 patients with severely calcified coronary arteries who undergo a procedure to open the blockages (PCI). Researchers will track outcomes like heart attacks and repeat procedures over time. The goal is to learn which techniques work best in…

This study observes 600 people with aortic stenosis who cannot have a standard TAVI procedure through the leg artery. Instead, doctors will use other access points, like the chest or neck, to replace the heart valve. The goal is to track safety and success rates of these alternat…

This study aims to improve how MRI scans measure blood flow in the heart muscle. Researchers will compare a new, fully quantitative method with the standard semi-quantitative approach in 35 people with possible heart disease. The goal is to develop a more accurate tool for diagno…

This study looks at whether a cardiopulmonary exercise test (CPET) can help predict serious heart problems in people with coronary heart disease. Researchers will review medical records from 15,000 patients and track their health over time. The goal is to see if CPET results are …

This study looks at 30 adults on a heart-lung machine (ECMO) for severe heart failure. Researchers will measure brain oxygen levels and compare them to blood flow and other vital signs. The goal is to see if brain oxygen monitoring can help guide treatment and improve survival in…

This study looks at whether re-sterilized (reprocessed) catheters work as well as new ones for heart ablation procedures. About 200 adults needing this treatment will be randomly assigned to get either a new or a reprocessed catheter. Researchers will compare how long the procedu…

This study will follow 1,800 people who had a stent placed in their heart arteries using a special camera (OCT). Researchers want to see if new measurements from routine angiograms can better predict future heart problems like heart attacks or chest pain. The goal is to improve h…