Heart disorder

This early study tests a new catheter technique called VINTAGE for people with ventricular arrhythmia that hasn't improved with standard treatment. The procedure uses special catheters to reach and destroy heart tissue causing the abnormal rhythm. Thirty adults will be enrolled a…

This study is testing a new device called the Hydra Transcatheter Aortic Valve System in 500 people with severe aortic stenosis, a condition where the heart's aortic valve becomes narrow. The device is implanted through a catheter, avoiding open-heart surgery. Researchers will tr…

This study tests a medicine called aficamten in children aged 12 to 18 with a heart condition that makes it hard for blood to pump out. The goal is to see if the drug can reduce pressure inside the heart and improve symptoms like shortness of breath. About 55 participants will re…

This study tests whether special force feedback instruments, used with the da Vinci surgical robot, can safely and effectively repair leaky mitral valves. The trial includes 30 adults with moderate-to-severe mitral regurgitation. Researchers will check for major complications and…

This early-stage study tests a single intravenous dose of a gene therapy called LY3884961 in 15 adults with Gaucher disease type 1. The goal is to see if it is safe and can reduce or replace the need for ongoing enzyme replacement or substrate reduction therapy. Participants must…

This study looks at a new way to keep donor hearts healthy during transport for transplantation. It involves 141 adults with heart failure who are on the transplant list. The goal is to see if this method is safe and effective for using hearts from extended criteria donors.

This pilot trial is testing whether a device called the Coronary Sinus Reducer can help people with angina (chest pain) who have no significant blockages in their coronary arteries. The device, shaped like an hourglass, is placed into a vein in the heart to improve blood flow. Th…

This trial investigates the best way to treat people who have a heart attack and also have other narrowed arteries. It compares doing an immediate procedure to open those other arteries, guided by a pressure wire, versus waiting and using a heart scan to decide later. The goal is…

This study tests a device that electrically stimulates the vagus nerve to help manage heart failure. About 118 patients with moderate-to-severe heart failure received the implant. The goal is to see if this stimulation can improve heart function and exercise capacity over six mon…

This study tests whether giving extra fluids (saline) through an IV during and after a heart procedure called pulsed field ablation can prevent acute kidney injury. The procedure is used to treat atrial fibrillation, a common heart rhythm problem, but can sometimes harm the kidne…

This trial tests whether taking a 15-minute hot bath after each exercise session improves recovery in people who recently had a heart attack. Half of the 30 participants will do standard exercise rehab plus hot water immersion, while the other half does exercise alone. The study …

This trial asks whether giving only ticagrelor (a blood thinner) after a heart attack, instead of the usual ticagrelor plus aspirin, is just as safe and might reduce bleeding and heart muscle damage. About 200 people who had a type of heart attack called STEMI and underwent a ste…

This study tests a new growth hormone medicine called somapacitan, given once a week, in 47 children who are very short due to being born small for gestational age, or having Turner syndrome, Noonan syndrome, or idiopathic short stature. The main goal is to see if it is safe and …

This study tests whether using a special camera (OCT) inside the heart's arteries during a heart attack procedure leads to better outcomes than the standard X-ray method. About 3000 people having a heart attack will be randomly assigned to one of the two approaches. The goal is t…

This trial is testing whether a supervised exercise program can reduce the risk of death, another heart attack, or stroke in people who have already had a heart attack. About 9,700 participants will be randomly assigned to either a four-year program with a personal trainer or to …

This study tests a new approach called 'pill-in-pocket' anticoagulation for people with atrial fibrillation (AF), a heart rhythm condition that raises stroke risk. Instead of taking blood thinners every day, participants would stop them after a 30-day AF-free period and only rest…

This study follows 250 people with severe aortic stenosis who receive the SAPIEN 3 transcatheter heart valve as part of their standard care. The goal is to see how safe and effective the valve is over the long term in everyday clinical practice. Researchers will track how many pa…

This large study is testing whether a device called WATCHMAN FLX, which closes off a small pouch in the heart, can be a safe and effective alternative to daily blood thinners (NOACs) for preventing strokes in people with non-valvular atrial fibrillation. The trial involves 3,000 …

This trial tests a new surgical technique for people with tricuspid valve disease, where the valve on the right side of the heart is damaged. Instead of replacing the valve with an artificial one, surgeons will use a piece of the heart's own chamber, called the right atrial appen…

This study tests whether a monthly injection called ziltivekimab can reduce heart failure-related deaths, hospitalizations, and urgent visits in people with heart failure and signs of inflammation. About 5,600 participants will receive either the drug or a placebo for up to 4 yea…

This study tests a device called Barostim that stimulates nerves in the neck to help the heart work better. It involves 2,500 adults with moderate heart failure who still have symptoms despite standard treatments. The goal is to see if the device reduces deaths and hospital stays…

This trial compares standard versus extra pulsed field ablation applications during pulmonary vein isolation in people with atrial fibrillation. The goal is to see if more targeted ablations improve freedom from irregular heart rhythms for up to 18 months. Participants are adults…

This trial tests whether using a larger, expandable balloon during cryoablation for paroxysmal atrial fibrillation better affects the heart's autonomic (automatic) control compared to a standard-size balloon. About 40% of patients show signs of beneficial parasympathetic denervat…

This early feasibility study tests a new device called the PLAR Implant, designed to treat severe degenerative mitral regurgitation—a condition where the heart's mitral valve doesn't close properly, causing blood to leak backward. The implant is delivered through a vein in the le…

This Phase 3 trial tests an experimental drug called ALXN2220 in about 1,180 adults with transthyretin amyloid cardiomyopathy (ATTR-CM), a condition where abnormal protein builds up in the heart, causing heart failure. The drug is designed to remove those protein deposits. Partic…

This study tests the long-term safety and effectiveness of an experimental drug called VX-670 in adults with myotonic dystrophy type 1 (DM1). Participants who completed a previous VX-670 study can join. The drug is given through a vein, and researchers will monitor side effects a…

This study tests whether people with atrial fibrillation who receive a WATCHMAN FLX Pro device can safely take just one blood thinner or aspirin instead of the usual two-drug plan. About 1,857 participants are being followed for six months to compare rates of death, stroke, major…

This trial is testing a new device called the PLAR Implant, which is designed to treat severe functional mitral regurgitation—a condition where the heart's mitral valve doesn't close properly, causing blood to leak backward. The implant is placed via a catheter through a vein in …

This trial tests whether a digital tool that prompts doctors to adjust heart failure medications can improve care. The tool uses home monitoring and patient data to suggest medication changes. The study includes over 1,300 adults with heart failure and will measure hospitalizatio…

This early-phase trial tests a single intravenous dose of LY-M001 gene therapy in 9 children (ages 6 to 17) with type 1 Gaucher disease. The goal is to see if it is safe and can improve key symptoms like liver size and blood markers. Researchers will monitor participants for side…

This study tests a new device that uses extreme cold (cryoablation) to treat a fast, dangerous heart rhythm called sustained monomorphic ventricular tachycardia. About 206 adults with this condition will receive the freezing treatment. The goal is to see if it safely stops the ab…

This study tests a new device that replaces a leaky tricuspid heart valve using a thin tube inserted through a leg vein, avoiding open-heart surgery. It includes 150 people with severe tricuspid regurgitation who are too high-risk for surgery. The goal is to see if the device is …

This phase 3 trial tests whether ziltivekimab, a drug that targets inflammation, can reduce swelling in the arteries of 40 people with coronary artery disease. Participants receive either the drug or a placebo, and researchers use advanced imaging and blood tests to measure chang…

This study looks at whether opening a completely blocked heart artery with a procedure called PCI, on top of taking standard heart medications, helps people live longer and feel better compared to medications alone. About 2000 adults with stable heart disease and symptoms like ch…

This trial tests whether a technique called PICSI, which selects sperm by their ability to bind to hyaluronic acid, can improve pregnancy rates and reduce miscarriage compared to standard ICSI. It involves couples who had poor fertilization in their first IVF cycle and are now tr…

This trial tests whether an insomnia treatment can improve markers of heart health in adults with insomnia and risk factors for cardiovascular disease. Participants receive either a cognitive-behavioral therapy program for insomnia or a sleep education control. The study measures…

This trial is testing a new type of heart valve made from a material that the body absorbs over time. It is designed for children and young adults who need surgery to fix a congenital heart defect affecting the passage from the heart to the lungs. The valve is implanted during su…

This phase 4 study tests the drug mavacamten in 63 adults with a type of heart muscle disease called obstructive hypertrophic cardiomyopathy. The goal is to see if the drug can improve heart structure, measured by MRI, and ease symptoms like shortness of breath. Participants take…

This study tests a small device, called the Coronary Sinus Reducer, in 35 people with a type of heart failure where the heart pumps well but still has trouble filling with blood. The device is placed in a vein of the heart to help lower pressure during exercise. The goal is to se…

This study tests if adding a tiny shunt (a small passage) between the upper chambers of the heart can lower pressure after a standard valve repair procedure called MitraClip. Ten people with heart failure and a leaky mitral valve will receive the shunt right after their MitraClip…

This study asks whether wearing a small heart monitor for two weeks at a time, twice, can better detect hidden irregular heartbeats (atrial fibrillation) in older adults who recently had a stroke or mini-stroke, compared to the usual 1-2 day monitoring. Atrial fibrillation is a m…

This phase 2 trial tests whether daratumumab, an antibody that targets cancer cells, can improve outcomes for people with multiple myeloma after they receive a stem cell transplant. The study involves 31 participants and is currently active but not recruiting. The main goal is to…

This study tests a device called Amulet 2 that is implanted in the heart to seal off a small pouch (the left atrial appendage) where blood clots can form in people with atrial fibrillation. The goal is to reduce the risk of stroke without needing long-term blood thinners. About 4…

This trial tests whether a personalized exercise prescription, based on a graded exercise test and target heart rate, improves fitness more than standard perceived exertion-based exercise in older adults (60+) recovering from heart events like heart attacks or heart surgery. Part…

This study tests a modified pacemaker designed to improve heart function and quality of life in people with heart failure with preserved ejection fraction (HFpEF). About 105 participants will receive either the active pacing therapy or a non-pacing mode. Researchers will measure …

This study tests a new method to preserve hearts from donors after circulatory death. The hearts are kept cool and oxygenated using a special machine during transport. The goal is to see if this helps more people get heart transplants and survive. The study involves 20 adults alr…

This study tests a new device that uses pulsed electric fields to treat persistent atrial fibrillation, a type of irregular heartbeat. Researchers will enroll 200 people to see if the procedure is safe and can restore normal heart rhythm. The goal is to offer a more precise and l…

This study tests whether adding vericiguat to standard heart failure care can improve heart function in people with breast cancer who developed heart problems after cancer treatment. Participants will be randomly assigned to receive either vericiguat plus usual care or usual care…

This study follows 2000 people who have or will get the OmniaSecure defibrillation lead, a wire that helps control dangerous heart rhythms. Researchers will track how often the lead causes problems over 5 years. The goal is to make sure the lead is safe and works as expected in e…

This early-stage trial is testing whether stem cells from a donor can help control heart failure in people whose hearts were weakened by a type of chemotherapy called anthracyclines. About 72 participants will either receive standard care alone or standard care plus stem cells gi…

This study compares two procedures for severe aortic valve stenosis: transcatheter aortic valve implantation (TAVI), a less invasive approach, and standard open-heart surgery. It will follow 4,000 high-risk patients for up to 24 months to see which method leads to fewer deaths, h…

This phase 2 trial is testing whether combining daratumumab, venetoclax, and dexamethasone can produce a deep and rapid response in people newly diagnosed with light-chain (AL) amyloidosis who carry a specific genetic marker called t(11;14). The study enrolls 36 participants and …

This trial tests two methods of harvesting the left internal mammary artery for heart bypass surgery. One method strips the artery clean of surrounding tissue; the other leaves the tissue intact. Researchers want to know which approach keeps the graft open longer and reduces the …

This study tests a small sensor implanted in the lung artery that sends daily pressure readings to doctors. It involves 81 adults with advanced heart failure (NYHA Class III). The goal is to see if the device is safe and accurate, helping patients avoid hospital stays by catching…

This trial tests whether an 8-week course of the immunosuppressive drug prednisone can reduce episodes of ventricular tachycardia (a potentially fatal fast heart rhythm) and improve heart function in people with non-ischemic cardiomyopathy and confirmed heart inflammation. Partic…

This study tests whether adding extra ablation to the back wall of the heart's left atrium improves outcomes for people with persistent atrial fibrillation (a type of irregular heartbeat). About 206 participants will receive either standard vein isolation or vein isolation plus b…

This trial compares two types of transcatheter heart valves—one designed to sit above the natural valve opening (supra-annular) and one that sits within it (annular)—in people with severe aortic stenosis and a small aortic annulus (≤23 mm). The goal is to see which valve leads to…

This study tested a small sensor placed in the lung artery to help doctors monitor heart failure patients remotely. 738 people with advanced (NYHA Class III) heart failure took part. The goal was to see if using the sensor could reduce hospitalizations and deaths compared to a ta…

This trial investigates whether a shorter course of antibiotics, tailored to each patient's response, can treat left-sided endocarditis as safely as the standard 4-6 week regimen. Adults with endocarditis caused by specific bacteria (Streptococci, Enterococcus faecalis, or Staphy…

This trial investigates whether a shorter course of antibiotics, tailored to each patient's response, can safely treat bacterial endocarditis. Standard treatment lasts 4-6 weeks, but this study tests a personalized approach based on factors like fever and blood tests. The goal is…

This trial tests whether a personalized training program called 'Kleuter Extra' can improve executive functioning—skills like attention, self-control, and planning—in preschoolers aged 4 to 6 who have severe congenital heart disease. Many children with this condition face thinkin…

This pilot study tests whether a new pacing method called LOT-CRT, which paces two areas of the heart at once, works better than standard pacing alone in people with heart failure. Ten patients will each receive a special pacemaker and try both pacing settings for 6 months each. …

This study tests a prototype smartphone app called Appet HEART, designed to support personalized care for people with coronary artery disease after they leave the hospital. Researchers want to see how often patients use the app, who benefits most, and whether it improves recovery…

This study investigates whether a specific leg exercise program can improve how blood vessels, muscles, and nerves work during exercise in people over 65 with heart failure with preserved ejection fraction (HFpEF). The trial focuses on peripheral problems—like reduced blood flow …

This study tests a next-generation heart valve (Navitor) in 333 people with severe aortic stenosis who are too high-risk for open-heart surgery. The goal is to see if the valve is safe and works well at 30 days, focusing on survival and reducing leaks around the valve. The valve …

This study tests whether adding a PCSK9 inhibitor (a powerful cholesterol-lowering drug) to high-intensity statin therapy can prevent future cardiovascular events in people who have recently had a heart attack or unstable angina and underwent a stent procedure. About 1,200 partic…

This trial tests a procedure called pulmonary arterial denervation (PADN) for people with heart failure who also have high blood pressure in the lungs. A special catheter delivers radiofrequency energy to nerves in the pulmonary artery, which may help lower pressure and improve h…

This study tests a wrist-worn device called CardiaCare RR2 that stimulates the median nerve to calm irregular heart rhythms after catheter ablation for atrial fibrillation (AF). About 34 adults who have had AF ablation will use the device daily for six months. Half will receive a…

This trial tests whether a dietary supplement called Tertinat, containing epigallocatechin-3-gallate, can reduce major heart problems in people with atherosclerosis who have recently had bypass or stent surgery. Over two years, participants take either the supplement or a placebo…

This study investigates whether diagnosing and treating obstructive sleep apnea with CPAP therapy early, while patients are still in the hospital for heart problems, can reduce the chance of being readmitted within 30 days. The trial enrolls adults with heart failure, heart attac…

This trial tests whether placing a balloon in the aorta (REBOA) during CPR can improve blood flow to the heart and brain in people who have a cardiac arrest outside the hospital. The study includes 200 adults with non-traumatic cardiac arrest who receive CPR within 10 minutes. Re…

This trial tests a new device called the Edwards SAPIEN M3 System for people with severe mitral regurgitation, a condition where a heart valve leaks blood backward. The device is placed using a thin tube threaded through blood vessels, avoiding open-heart surgery. The study inclu…

This trial tests whether adding posterior wall isolation to standard pulmonary vein isolation reduces atrial fibrillation recurrence in people with persistent AF. About 482 adults aged 20 to 80 will be randomly assigned to one of the two procedures using pulsed-field energy. Part…

This study evaluates a special balloon coated with sirolimus, a drug that helps prevent arteries from narrowing again after angioplasty. The balloon is used during routine procedures to open blocked heart arteries in people with coronary artery disease. Researchers are tracking h…

This trial tests a device called the Edwards PASCAL system, which is used to repair a leaky tricuspid valve in the heart without open-heart surgery. The study includes 300 people with severe tricuspid regurgitation who are candidates for this procedure. Researchers are checking h…

This trial tests a new artificial valve, called LuX-Valve Plus, for people with severe tricuspid regurgitation (a leaky heart valve) who are not candidates for open-heart surgery. Participants are randomly assigned to receive either the valve implant plus standard medical therapy…

This trial tests whether using a special camera inside the arteries (optical coherence tomography, or OCT) is better than standard pressure-wire measurements for deciding which non-blocked arteries need stenting in people who have just had a heart attack. About 1,425 participants…

This study looks at whether people with an On-X mechanical aortic heart valve can safely take a lower dose of the blood thinner warfarin. The goal is to reduce bleeding complications while still preventing dangerous blood clots. Researchers will follow 510 adults for up to 5 year…

This study tests a new treatment called NXC-201 CAR-T for people with AL amyloidosis, a rare disease where abnormal proteins build up in organs. The therapy uses a patient's own immune cells, modified to target and destroy the cells producing these proteins. The trial is open to …

This phase 2b trial tests whether adding ALXN2220 to eplontersen works better than eplontersen alone for adults with transthyretin amyloid cardiomyopathy (ATTR-CM), a condition where abnormal proteins build up in the heart. About 326 participants will receive either the combinati…

This trial investigates whether pulsed field ablation (PFA) can safely isolate the pulmonary veins in adults with congenital heart disease who experience atrial tachycardia. Participants will undergo PFA during a standard ablation procedure. The study measures how well the veins …

This study compares a newer pacing method called left bundle branch area pacing (LBBAP) with standard right ventricular pacing in 100 adults who need a pacemaker but have normal heart function. The goal is to see if LBBAP better prevents the decline in heart pumping ability that …

This study tests a program called PIXI that coaches parents of infants diagnosed with rare neurogenetic disorders (such as Fragile X, Angelman, or Down syndrome) during the first year of life. The program combines education about the disorder, guided parent-child interaction acti…

This pilot study investigates whether stimulating a nerve in the earlobe (vagal nerve stimulation), alone or combined with two medications (galantamine and pyridostigmine), can help control heart rate and reduce symptoms in women with Postural Tachycardia Syndrome (POTS). Partici…

This study follows about 3000 people with complex coronary artery disease who receive the Ultimaster Nagomi stent, a device that slowly releases a drug to keep arteries open. The goal is to see how often the stent fails—meaning heart-related death, heart attack, or need for anoth…

This study tests whether a fully online exercise program is practical and acceptable for people with heart failure. Participants are randomly assigned to either a supervised online exercise group or a self-managed home exercise program for 8 weeks. The goal is to see if people st…

This phase 2 trial tests an oral drug called venglustat, given alongside the standard enzyme therapy Cerezyme, in adults with Gaucher disease type 3 (a rare genetic disorder affecting the body and brain). The study has four parts: first, it checks spinal fluid biomarkers to disti…

This study tests a combination of two drugs, venetoclax and dexamethasone, in people with a rare blood disorder called AL amyloidosis that has come back or not improved after treatment. The trial includes 53 adults with a specific genetic marker (t(11;14)). The goal is to find th…

This study follows 2,500 people with moderate heart failure (NYHA Class II or III) who already have a CardioMEMS sensor implanted in their lung artery. The sensor wirelessly sends pressure readings to doctors, who use the data to adjust medications. Researchers will track surviva…

This trial investigates whether intravenous infusions of tiny particles (extracellular vesicles) from heart progenitor cells can safely improve heart function in people with severe dilated cardiomyopathy and heart failure. Participants receive three infusions and are monitored fo…

This study tests a transitional care model for older adults (65+) hospitalized with heart failure, COPD, or pneumonia. The model provides extra education, social services, and coordination among doctors after discharge. Researchers compare this to usual care to see if it reduces …

This trial tests whether offering remote video exercise sessions, as an alternative to center-based rehab, helps more people attend cardiac rehabilitation after a heart attack. About 1,500 adults aged 18–79 who had a type 1 heart attack will be assigned to either remote or center…

This trial looks at the best time to reopen other blocked arteries in people who have just had a major heart attack (STEMI) and have multiple narrowed heart arteries. Participants are randomly assigned to have all blockages fixed right away or in a separate procedure later. A spe…

This study tests whether strengthening the muscles used for breathing can improve exercise capacity, heart function, and quality of life in people with chronic heart failure. Participants with reduced or mildly reduced heart pumping ability will be randomly assigned to one of two…

This study tests whether a mechanical heart pump called the HeartMate III (an LVAD) helps people with end-stage heart failure live longer and with fewer strokes compared to taking standard heart failure medications. About 80 adults with severe heart failure are randomly assigned …

This study investigates whether empagliflozin, a drug typically used for diabetes, can help people with worsening heart failure get rid of extra fluid. Researchers will give 60 participants either empagliflozin or a placebo for six weeks, alongside their usual diuretic medication…

This study tests whether injecting botulinum toxin (Botox) into fat pads around the heart's veins during cardiac surgery can prevent atrial fibrillation (AFib), a common and serious complication. About 220 adults undergoing heart surgery will receive either Botox or a placebo inj…

This study looks at whether giving people a heart-lung machine (ECPR) right where they collapse from a cardiac arrest can help more of them survive to leave the hospital. Researchers will compare people who get this extra treatment with those who get standard CPR and care. The st…

This study tests a behavioral program called Individualized Developmental Care (NIDCAP) for newborns with complex congenital heart disease. The program aims to reduce stress from the hospital environment by supporting parent involvement, creating a soothing setting, and adjusting…

This study tests whether hearts from donors who died from circulatory death (DCD) are as safe for transplant as hearts from brain-dead donors (DBD). About 40 adult heart transplant recipients will receive either a DCD or DBD heart. The goal is to see if using DCD hearts can safel…

This trial tests whether a home-based tele-rehabilitation program is as effective as traditional center-based cardiac rehabilitation for people who have recently had a heart attack (acute coronary syndrome). Participants will either complete 20 sessions at a rehab center or 20 se…

This study tests whether a supplement called sulforaphane, found in broccoli sprouts, can help prevent age-related declines in heart function. Researchers will give the supplement or a placebo to adults over 60 with a type of heart failure called HFpEF. They will measure heart fu…

This early study tests a new stent system designed to treat blockages at artery branch points in the heart. It involves 13 people with heart disease who need a procedure to open these blockages. The main goal is to see if the stent can be safely placed and work as intended.

This study tests a new device called the DurAVR™ THV System, a replacement heart valve placed through a small tube in an artery, for people with severe aortic stenosis (a narrowed heart valve). The trial involves 150 participants and aims to see if the device is safe and works we…

This early study tests a new device called the DurAVR™ heart valve in 15 people aged 65 and older with severe aortic stenosis, a condition where the heart's aortic valve becomes narrowed. The valve is implanted through a catheter (TAVR) without open-heart surgery. The main goals …

This study compares two surgical techniques to fix a leaky mitral valve caused by degenerative disease. One method replaces the tiny chords that support the valve, while the other moves existing chords to a better position. The trial will follow 64 adults for one year after surge…

This study follows 16 infants aged 6 months or younger with infantile-onset Pompe disease, a rare genetic disorder that weakens muscles and breathing. All receive alglucosidase alfa (Myozyme) as part of their routine care. Researchers track how many survive without needing a brea…

This study tests whether injecting a woman's own platelet-rich plasma (PRP) into the ovary can help restore function in women with premature ovarian insufficiency (early menopause). 35 women under 40 will receive PRP in one ovary and a saline placebo in the other. The main goal i…

This study tests a 12-week home-based digital program called eCardiacRehab for people who have had a heart procedure (PCI). The program includes video messages, modules, and tracking to support recovery. Researchers want to see if patients will use it regularly and find it accept…

This study looks at whether starting a cardiac rehabilitation programme soon after leaving the hospital helps people with coronary artery disease live longer and avoid hospital stays for heart problems. The programme includes counseling, education, and exercise sessions three tim…

This study monitors the safety of the intravenous drug Samtasu (tolvaptan sodium phosphate) in people with heart failure who have fluid overload. Researchers will track side effects, including serious events and off-label use, in about 1,600 patients. The goal is to confirm the d…

This study tests a new way to help people with heart failure in Uganda manage their condition. It combines a standard care program with a mobile app that tracks symptoms and gives advice. The goal is to see if this approach improves self-care and reduces deaths or hospital stays.…

This study tests whether switching to avalglucosidase alfa is safe and more effective for people with late-onset Pompe disease whose condition has worsened on the standard treatment, alglucosidase alfa. Participants receive biweekly infusions of the new drug and are monitored for…

This study tests whether a personalized catheter ablation approach, guided by mapping low-voltage areas in the heart, works better than standard ablation for people with persistent atrial fibrillation (AFib). About 510 adults with persistent AFib will be randomly assigned to rece…

This study compares two types of weight-loss surgery (gastric bypass and gastric banding) with an intensive diet and exercise program for controlling type 2 diabetes in moderately obese adults aged 25 to 55. The goal is to see which approach works best for improving diabetes and …

This trial tests whether a new device called OmniHeart 4.0 can safely support the heart during high-risk angioplasty, compared to the standard ECMO machine. About 254 patients will be randomly assigned to receive either the OmniHeart or ECMO. Researchers will track major heart an…

This phase 3 trial studies 1,200 people with severe coronary artery disease and a weak heart pump (ejection fraction 40% or less). Participants are randomly assigned to receive either guideline-directed medical therapy, bypass surgery, or stenting. The study tracks survival, hear…

This early-phase trial tests whether giving stem cells (from a donor) during heart-lung bypass surgery is safe for infants under 6 months with certain congenital heart defects. Seventeen infants will receive the cells while undergoing heart repair. The main goal is to check for s…

This study looks at 3,500 unconscious patients who survived a cardiac arrest to find the best combination of sedation, fever control, and blood pressure management in the ICU. Each patient gets one of two levels for each factor (e.g., deep vs. light sedation, tight vs. loose feve…

This study tests a smartphone app called Medly that helps heart failure patients monitor their health after a hospital stay. The app reminds patients to check their weight and symptoms, and sends the information to their care team. The goal is to see if using the app improves pat…

This study tests a nurse-led program that uses home monitoring devices to help older adults with conditions like heart failure, diabetes, and depression manage their health after leaving the hospital. The goal is to improve care coordination and reduce hospital readmissions. Abou…

This study compares two strategies for placing stents in people with multiple blocked heart arteries. One group gets standard guidance using a pressure wire (FFR), while the other also uses an imaging catheter (OCT) to spot unstable plaques. The goal is to see if the combined app…

This study tests whether a drug-coated balloon is as safe and effective as a drug-eluting stent for people with large coronary artery disease. About 1,400 participants from multiple countries will be randomly assigned to one of the two treatments. The goal is to see which approac…

This study is tracking 100 adults who receive an EluPro antibiotic-eluting envelope during implantation of a heart device (like a pacemaker). The envelope slowly releases antibiotics to prevent infection. Researchers are monitoring complication rates in real-world use to see how …

This study is testing a device called the Tendyne mitral valve system in 200 people with mitral regurgitation, a condition where the heart's mitral valve doesn't close properly, causing blood to leak backward. The valve is implanted through a tube in an artery, avoiding open-hear…

This study tests a new device that combines two heart therapies: one to strengthen heartbeats and another to stop dangerous rhythms. About 300 adults with heart failure and a weak heart pump will get the device. Researchers will check if it safely converts life-threatening heart …

This Phase 2 trial tests JK07, a lab-made protein designed to help heart cells repair and pump better. About 282 adults with chronic heart failure will receive either JK07 or a placebo. The study looks at safety and whether JK07 can improve heart function in two groups: those wit…

This study looks at whether doing a heart procedure called cryoablation right away in the emergency room can help people with recent atrial fibrillation (AFib). About 350 adults with AFib that started within the past year will be randomly assigned to get either immediate ablation…

This study tests whether a wearable sensor that measures lung fluid can help doctors better treat fluid buildup in patients hospitalized for acute heart failure. About 216 adults will be randomly assigned to either standard care or care guided by the sensor. The goal is to see if…

This study compares a less invasive procedure (TEER) to standard open-heart surgery for people with severe mitral regurgitation, a condition where a heart valve doesn't close properly. About 600 adults will be randomly assigned to one of the two treatments. The main goal is to se…

This study looks at whether measuring blood pressure inside the heart's left upper chamber during a procedure for atrial fibrillation (an irregular heartbeat) can spot patients with hidden heart failure. If the pressure is high, patients get a heart failure checkup and medication…

This study is tracking 511 patients with severe tricuspid regurgitation who are treated with the Abbott TriClip device in real-world settings. The main goal is to see if the device can successfully reduce the valve leak by at least one grade at discharge. Researchers are also mon…

This study tests whether using a special imaging tool called OCT during stent placement leads to fewer heart problems over two years compared to standard methods. About 1,200 adults with blocked heart arteries that need complex stenting are taking part. The goal is to see if OCT …

This study tests a new device that uses special electrical pulses to treat paroxysmal atrial fibrillation, a condition where the heart beats irregularly. About 150 adults aged 18-75 who have not responded well to medication will receive the treatment. The goal is to see if the de…

This study looks at whether doing a preventive heart ablation (a procedure to destroy small areas of heart tissue causing irregular rhythms) before LVAD surgery can reduce serious problems like dangerous heart rhythms, death, blood clots, or heart failure in the first 30 days aft…

This study tests if a newer pacing method called left bundle branch pacing (LBBP) is better than standard right ventricular pacing (RVP) at preserving heart function in 683 adults with atrioventricular block (a type of heart block). Participants will be randomly assigned to one o…

This study tests whether a special heart pacing technique (left bundle branch pacing) combined with standard heart failure drugs can improve heart function better than drugs alone. It includes 50 adults with non-ischemic heart failure and a specific heart block. The main goal is …

This study compares two ways to replace a narrowed heart valve in people with severe aortic stenosis who are at intermediate risk for surgery. About 1,400 participants will be randomly assigned to get either a less invasive TAVI procedure or open-heart surgery (SAVR). The main go…

This phase 3 trial tests two things at once in 2312 people with coronary artery disease: a new drug-coated stent (Angiolite) versus a standard stent, and a shorter course of blood thinners versus the usual longer course. The goal is to see if the new stent works as well and if sh…

This study planned to test a new device called the Cardiovalve for people with severe tricuspid regurgitation (a leaky heart valve). The goal was to see if the device could safely replace the valve and reduce leakage. However, the study was withdrawn before any participants were …

This study is tracking 500 heart failure patients in Germany who receive a small device called the InterAtrial Shunt. The device is implanted to create a tiny passage between the heart's upper chambers, which may help lower pressure and improve breathing and quality of life. Rese…

This study tests whether briefly inflating a blood-pressure cuff on the arm before non-cardiac surgery can reduce heart damage in high-risk patients. Over 1,200 participants will receive either the cuff procedure or no intervention. The goal is to see if this simple, low-cost tec…

This study tests whether using the Impella 5.5 heart pump during and after heart surgery improves outcomes for 100 patients with severely weakened hearts. The pump supports blood flow, aiming to reduce death, stroke, kidney failure, and heart failure after surgery. Participants m…

This trial aimed to test whether umbilical cord stem cells, delivered through a catheter into heart arteries, could safely improve heart function in people with severe heart damage after a major heart attack. It was designed for patients with very weak hearts (ejection fraction b…

This study tests a technique called acute normovolemic hemodilution (ANH) in 2000 high-risk heart surgery patients. Before the heart-lung machine is used, doctors remove some blood and replace it with fluids. The goal is to see if this reduces the number of patients who need a bl…

This study looks at 3,500 people with severe tricuspid regurgitation, a common heart valve problem in older adults. It compares medical therapy (diuretics), surgery, and a less invasive transcatheter procedure to see which works best and when to treat. The goal is to improve surv…

This study compares three catheter ablation techniques for people with persistent atrial fibrillation (AF), a heart rhythm disorder. About 617 adults having their first ablation will be randomly assigned to one of three groups: isolating the pulmonary veins alone, adding ablation…

This study planned to test a new device called the Cardiovalve, which is threaded through a leg vein to replace a leaky mitral valve in people too sick for open-heart surgery. The trial was withdrawn before any participants were enrolled, so no results are available. The approach…

This study is testing a custom-made artificial heart valve, called TRICENTO, in 15 people with carcinoid heart disease who have severe leakage of the tricuspid valve and cannot have surgery. The valve is delivered through a catheter, avoiding open-heart surgery. The goal is to se…

This study is for people with systemic amyloidosis, a disease where abnormal proteins build up in organs. It tests the long-term safety of an experimental drug called AT-02. About 120 adults will receive the drug and be monitored for side effects and how the drug behaves in the b…

This pilot study tests whether using advanced imaging (ECGI, MRI, and PET scans) to identify abnormal heart tissue and electrical circuits can improve catheter ablation for persistent atrial fibrillation. Fifty-two adults with persistent AF who have not had prior ablation will re…

This study tests whether showing people their own coronary CT scans can motivate them to lower their LDL cholesterol and reduce side effects from statins. 273 adults with non-obstructive coronary artery disease will be followed for 12 months. The goal is to see if visual feedback…

This early study is testing a new device called the DurAVR™ THV System, which is a replacement heart valve placed through a small tube in the leg (TAVI procedure). The study includes 40 people with severe aortic stenosis or a failed surgical valve. The main goal is to see if the …

This study tests a minimally invasive heart bypass surgery for people with blockages in multiple coronary arteries. Instead of opening the chest fully, surgeons work through a small incision on the left side. The goal is to see if this approach is safe and effective, with fewer c…

This study tests whether a bedside device called Quantra can help doctors decide when to give blood transfusions during complex heart surgery. The device measures how well a patient's blood clots in real time. Researchers hope this will reduce the number of blood products (like r…

This study compares two catheter ablation techniques for atrial fibrillation (AF), a condition where the heart beats irregularly. One method uses a standard approach with a drug called adenosine to find missed spots, while the other adds an extra ring of ablation without the drug…

This study compares two ways to decide which blocked arteries to stent in heart attack patients who have multiple blockages. One method uses standard X-ray images; the other uses a computer analysis of those images to measure blood flow. About 1,800 patients will be randomly assi…

This study tests whether using a specific set of measurements (an algorithm) to decide between repairing or replacing a leaky mitral valve leads to better outcomes than letting the surgeon choose. About 110 patients with severe ischemic mitral regurgitation will be randomly assig…

This study looks at two treatment options for people who have both a leaky heart valve (ischemic mitral regurgitation) and blocked heart arteries. One option is open-heart surgery to fix the valve and bypass the blockages at the same time. The other is a less invasive procedure t…

This study looks at a procedure done before birth to help babies with a severe heart defect called hypoplastic left heart syndrome (HLHS). The goal is to improve blood flow through the heart so that the baby may have a better chance at a two-sided heart repair after birth. The st…

This study tests a smartphone app called MED-AD that sends reminders and tracks medication use for people with heart disease, high blood pressure, or high cholesterol. About 1,000 adults in Oman will be randomly assigned to use the app, receive daily text reminders, or get usual …

This study tests whether a newer pacing method (conduction system pacing) is as good as or better than standard biventricular pacing in heart failure patients with atrial fibrillation who need a heart ablation. About 82 participants will be randomly assigned to one of the two pac…

This study tests whether a new leadless pacemaker (Micra AV) is better than a traditional wired pacemaker for people aged 75 and older with heart block. The goal is to see if the leadless device improves quality of life, patient acceptance, and exercise ability. Eighty participan…

This study compares two ways of programming implantable defibrillators (ICDs) in 398 Japanese patients. One group uses early, multiple bursts of rapid pacing (ATP) to stop dangerous heart rhythms, while the other uses a longer detection time before pacing. The goal is to see whic…

This trial aimed to test an experimental drug called CM-336 for people with AL amyloidosis that has returned, not responded to treatment, or only partially responded after initial therapy. The drug works by helping the immune system attack and destroy harmful cells. However, the …

This study looks at two ways to treat a type of irregular heartbeat called non-paroxysmal atrial fibrillation (AFib) that doesn't go away on its own. Both methods use a new technique called pulsed-field ablation to destroy tiny areas of heart tissue causing the problem. One group…

This study tests whether advanced CT imaging can help doctors plan better coronary bypass surgery for 200 people with heart disease. Participants get a CT scan before and after surgery to measure blood flow changes. The goal is to improve surgical decisions and reduce chest pain,…

This study aimed to compare a new type of heart stent that slowly dissolves over time (MeRes100) with standard permanent metal stents in people with coronary artery disease. The trial was planned to include about 2,000 participants worldwide, but it was withdrawn before enrolling…

This study was designed to test an experimental drug called OPC-131461 in people hospitalized for worsening heart failure who still had fluid buildup after standard treatment. The goal was to see if the drug could improve a key blood marker of heart strain over 30 days. However, …

This study is testing a newer version of a heart valve device, called the SAPIEN 3 Ultra, in 200 people with severe aortic stenosis (a narrowed heart valve). The valve is implanted through a tube in an artery, avoiding open-heart surgery. Researchers are checking how well the val…

This study planned to test whether cooling the body before and after opening a blocked artery could help people having a heart attack. It was designed to include 80 patients at up to 15 hospitals. However, the trial was withdrawn before anyone was enrolled, so we have no informat…

This phase 2 trial tests whether empagliflozin (Jardiance), a diabetes drug, can reduce the 'no-reflow' phenomenon—when blood flow fails to fully restore after angioplasty—in 162 heart attack patients. Participants receive a loading dose before the procedure and daily doses for 3…

This study tests a new device called the Edwards EVOQUE eos mitral valve replacement system. It is for people with a leaky mitral valve who are too high-risk for open-heart surgery. The study will check if the device is safe and works well by looking at complications, heart funct…

This study is testing a small mechanical heart valve (15mm) in 20 children who need their aortic valve replaced due to disease or damage. The valve is designed to last and is monitored for safety and function over 5 years. Children will need lifelong blood-thinning medication to …

This study compares taking two blood thinners for just 1 month versus the standard 12 months after getting a heart stent. It involves over 3,700 patients with acute coronary syndrome. The goal is to see if the shorter regimen reduces bleeding risks without increasing heart proble…

This study tests whether a tailored exercise and education program, given before and after a first-time atrial fibrillation ablation, can improve heart fitness and quality of life compared to standard care. About 107 adults scheduled for ablation will be randomly assigned to eith…

This study tests a new, less invasive surgical approach for people with persistent atrial fibrillation (AFib), a heart rhythm problem that can be hard to treat. The procedure combines two techniques: ablation (creating tiny scars to block faulty signals) and closing off the left …

This study tests a new heart valve called the NAVITOR, placed using a thin tube (catheter) without open-heart surgery. It includes 434 people with severe aortic stenosis who are at intermediate or low risk for surgery. The main goals are to check for leaks around the valve at 30 …

This study tests a daily pill (obicetrapib plus ezetimibe) to see if it can reduce fatty plaque buildup in the arteries of 300 adults with heart disease. Participants must already be on cholesterol-lowering therapy but still have high LDL cholesterol and measurable plaque. The tr…

This early study is testing a new balloon-expandable heart valve device (TAVI) in 8 people with severe aortic stenosis who are at increased surgical risk. The goal is to see if the device can be safely delivered and perform as intended. Because this is a first-in-human study with…

This study tests whether adding an external support device to vein grafts during heart bypass surgery helps keep them open over time. Researchers will compare patients who receive the support with those who don't, tracking graft function and symptoms like chest pain. The goal is …

This study tests whether a new drug called Refralon, taken as a tablet once or twice daily, can prevent atrial fibrillation or flutter from returning after normal heart rhythm has been restored. About 175 adults with persistent AFib will receive either Refralon or a placebo for 6…

This pilot study tests whether giving packed red blood cells during in-hospital cardiac arrest can help deliver oxygen to the brain and other vital organs. Researchers plan to enroll 30 adults who have been in cardiac arrest for at least 10 minutes, comparing blood transfusions t…

This study tests a new device that repairs leaky mitral heart valves without stopping the heart or using a heart-lung machine, compared to standard open surgery. About 585 people with moderate to severe mitral regurgitation will take part. The goal is to see if the device is safe…

This study compares using a manual clot-removal catheter (Export) before standard balloon angioplasty versus angioplasty alone in 300 heart attack patients with completely blocked arteries. The goal is to see if removing the clot first improves blood flow and reduces in-hospital …

This study tests a new enzyme replacement therapy called avalglucosidase alfa in babies with infantile-onset Pompe disease, a rare genetic disorder that causes severe muscle weakness and breathing problems. The treatment is given through an IV every other week for up to 4 years. …

This study tests whether a small sensor implanted in the lung artery can help doctors remotely monitor heart failure and adjust treatments. About 554 patients with advanced heart failure will either receive standard care or the sensor plus standard care. The goal is to see if the…

This phase 2 trial is testing whether a patient's own bone marrow stem cells can improve heart function and ease symptoms in people with dilated cardiomyopathy and heart failure. Twenty participants will have stem cells collected from their hip and then infused into their heart a…

This study is monitoring 110 adults in Korea who are taking Vyndamax (tafamidis) for a rare heart condition called ATTR-CM. The goal is to track side effects and see how well the drug works over 10 years in everyday medical practice. Researchers will check heart function and symp…

This study tests whether an implantable heart monitor with remote follow-up can help doctors decide when to prescribe blood thinners to patients who have had a heart attack and developed new atrial fibrillation. The goal is to reduce bleeding complications compared to the standar…

This study tests a drug called vosoritide in 56 children with short stature caused by certain genetic conditions. The drug targets the growth plate to help children grow faster. Participants are observed for 6 months, then treated with daily injections for 12 months to check safe…

This study tests whether collecting and re-infusing unwashed shed blood during off-pump coronary artery bypass surgery can reduce the need for donor blood transfusions and lower complications. Fifty adults undergoing this surgery will have their shed blood returned via a special …

This trial evaluates an AI-assisted tool that measures the heart's pumping efficiency (ejection fraction) from ultrasound clips. The AI's measurements will be compared to those made by a panel of expert cardiologists to see if they are equally accurate. The study uses previously …

This study will test if artificial intelligence (AI) can spot a rare heart condition called ATTR-CM in people with heart failure. Researchers will use AI to analyze electrocardiograms (ECGs) and echocardiograms (Echo) from 150 adults. The AI's findings will be checked against a s…

This trial is testing whether a new PET imaging tracer, 18F-flurpiridaz, can detect coronary artery disease as accurately as the current standard, 82Rb-chloride. The study will involve 60 adults scheduled for a clinically indicated PET scan. Researchers will compare the diagnosti…

This trial tests whether a coronary CT angiography (CCTA) scan can safely identify heart attack patients who do not need invasive angiography. About 300 patients with non-ST-elevation myocardial infarction (NSTEMI) will undergo CCTA before the standard invasive test. The goal is …

This phase 3 trial is testing whether a special PET scan using radioactive water ([15-O]-H2O) can accurately detect coronary artery disease. About 215 adults with suspected heart disease will receive the injection at rest and during stress, then compare results to standard tests.…

This study enrolls about 4,000 adults aged 60 and older with heart failure who are at high risk for ATTR amyloidosis, a rare disease that stiffens the heart. Doctors receive special training on how to spot and diagnose the condition using standard tests. The goal is to see if thi…

This study tests whether a new MRI technique, called 5D flow, can measure blood flow and pressure in the heart as accurately as the standard invasive procedure, right-left heart catheterization. People with congenital heart conditions who already need a catheterization will also …

This trial is developing an artificial intelligence system that reads electrocardiograms (ECGs) to detect congenital heart disease in children. Researchers are collecting ECG data from thousands of children, including those with common and rare heart defects, to train a deep-lear…

This study is testing whether artificial intelligence can detect transthyretin amyloid cardiomyopathy (ATTR-CM), a serious and often underdiagnosed heart condition, earlier than usual. Researchers will use AI algorithms to analyze routine ECGs and heart ultrasounds from up to 1.5…

This study tests whether a non-invasive device called Vivio can accurately track heart failure status by measuring blood pressure in the lungs. Researchers will compare Vivio readings to those from an implanted CardioMEMS sensor in 500 adults over age 21 who already have or will …

This trial tests whether an artificial intelligence tool can improve the accuracy and speed of measuring heart wall thickness on echocardiograms compared to standard sonographer measurements. About 4,000 adults receiving a transthoracic echocardiogram will have their images asses…

This study tests whether a compact 3-lead ECG device can accurately detect acute coronary syndrome (heart attack) in adults arriving at the emergency department with chest pain. Participants receive a HeartBeam ECG recording within 10 minutes of the standard 12-lead ECG. The goal…

This Phase 3 trial tests whether NH002, a contrast agent made of tiny gas-filled microspheres, can improve the quality of heart ultrasound images in people with heart disease. Participants receive NH002 through an IV before a standard echocardiogram. The study compares the clarit…

This early-phase trial tests a radioactive imaging agent called 18F-mFBG to see how well it can show the nerves in the heart. Researchers will give the agent to 10 adults—some with heart disease and some without—and take PET scans over time. The goal is to measure how the agent m…

This study offers voluntary screening for newborns in North Carolina to detect a wide range of rare health conditions early. Using a small blood sample already collected at birth, the program tests for dozens of disorders, including spinal muscular atrophy, cystic fibrosis, and m…

This study tests whether combining an AI-enhanced electrocardiogram (ECG) with a focused heart ultrasound can better detect structural heart disease in people without symptoms. About 2,705 adults with no known heart problems will get an AI-ECG, and if it flags a concern, they'll …

This study looks at people with Long COVID who have new chest pain but no blocked arteries. It tests whether a special heart function test can guide treatment to improve symptoms and quality of life. 108 participants will be randomly assigned to either treatment guided by the tes…

This study looks at better ways to find hidden atrial fibrillation (an irregular heartbeat) in people who have had a stroke. About 337 participants will use either a wearable patch for 72 hours or a handheld device three times a day to monitor their heart rhythm. The goal is to s…

This study is testing whether a special home blood pressure monitor that can detect atrial fibrillation (AFib) helps diagnose the condition faster in older adults with high blood pressure. About 1,900 participants aged 60 and older will take daily blood pressure readings and answ…

This study is developing an artificial intelligence system to analyze CT scans of the heart. The goal is to automatically detect and measure dangerous plaque that can cause heart attacks. Researchers will compare the AI's findings with detailed imaging tests and track patient out…

This study looks at two new methods to tell apart blockages in large versus tiny heart arteries. About 68 adults with known or suspected coronary artery disease will get a PET scan and a heart catheterization. Researchers will compare the new measurements with standard tests to s…

This study is testing a new finger-prick blood test that measures troponin levels in about 10 minutes, compared to the usual 2-hour lab test. Researchers hope it will help diagnose heart attacks faster and reassure patients who are not having one, allowing them to be discharged s…

This study looks at whether existing blood markers can accurately identify the underlying cause of heart failure in 511 patients. Researchers aim to improve diagnosis and potentially reduce healthcare costs by avoiding unnecessary tests. Participants were recently diagnosed with …

This study looks at whether adding just 3 minutes to a cardiac MRI can help doctors find heart inflammation (myocarditis) early in cancer patients on immunotherapy. Myocarditis is a rare but often deadly side effect of these drugs. The researchers will scan 200 patients who alrea…

This study tests a new, non-invasive ultrasound method called electromechanical wave imaging (EWI) to see if it can more accurately locate and diagnose heart rhythm problems compared to standard tests. About 322 adults already scheduled for a heart procedure will get an EWI scan …

This large UK study (EVAREST) aims to improve how doctors interpret stress echocardiograms for diagnosing coronary artery disease. Researchers will collect blood samples and analyze echocardiogram images from up to 23,000 patients to find new biomarkers that make diagnosis more a…

This study tests whether a water-resistant, wireless ECG patch worn for 7 days can detect more cases of hidden atrial fibrillation (a heart rhythm problem that raises stroke risk) than the usual 24-hour Holter monitor. Researchers will enroll 320 adults who recently had a stroke …

This study aims to make MRI scans clearer for people with heart arrhythmia (irregular heartbeat). Researchers will test two special imaging methods on 135 participants—105 with arrhythmia and 30 healthy volunteers—to see if they reduce blurry images caused by the irregular rhythm…

This trial is testing a device called the Vine™ Embolic Protection System, which is implanted in the carotid arteries to trap blood clots before they travel to the brain. It is designed for people with atrial fibrillation who are already taking blood thinners but still have a hig…

This study explores whether a community-based cooking program can help African-American adults at risk for heart disease cook and eat healthier. About 43 participants from Washington, D.C. will take surveys, attend cooking classes led by a chef, and track their eating habits. The…

This study tests whether colchicine, a drug usually used for gout, can prevent atrial fibrillation (a type of irregular heartbeat) after coronary artery bypass surgery. About 400 adults scheduled for elective bypass will receive either colchicine or a placebo starting 3 days befo…

This study tests whether adding N-Acetylcysteine (NAC) to the standard drug amiodarone can better prevent atrial fibrillation (a type of irregular heartbeat) in people at high risk after major chest surgery. About 184 adults having lung or esophagus surgery will be randomly assig…

This pilot study is testing whether providing medically tailored meals to heart failure patients after they leave the hospital is practical and helpful. Researchers will enroll 85 adults who are on Medicaid or Medicare and recovering from a heart failure hospitalization. The meal…

This study tests whether a single dose of intravenous iron (ferric derisomaltose) can improve exercise capacity in people with heart failure with preserved ejection fraction who also have iron deficiency. About 66 adults will receive either the iron infusion or a placebo, and the…

This trial tests whether nurse-guided breathing exercises can reduce shortness of breath and anxiety in people with advanced heart failure who come to the emergency department. Participants are randomly assigned to receive either standard care plus guided diaphragmatic and pursed…

This study tests whether 8 weeks of phone-based mindfulness training can improve self-care and thinking skills in 176 adults with heart failure and mild cognitive impairment. Participants practice techniques like breath awareness and body scanning for 20 minutes daily. The goal i…

This phase 3 trial tests whether aficamten, an oral drug, can improve quality of life and exercise capacity in 500 adults with symptomatic non-obstructive hypertrophic cardiomyopathy, a heart condition that makes the heart muscle thick and stiff. Participants receive either afica…

This trial tests whether a structured therapeutic education program, delivered by general practitioners, can improve quality of life for people with heart failure. Around 200 patients in primary care will be randomly assigned to receive the program or usual care, and their qualit…

This trial compares two ultrasound-guided nerve blocks—erector spinae plane block and modified pectoral fascial plane block—for pain control in children undergoing congenital heart surgery. Forty children will be randomly assigned to receive one of the blocks before their incisio…

This study compares a structured pulmonary rehabilitation program — including breathing exercises, aerobic conditioning, and education — against standard medical care for people with pericarditis (inflammation around the heart). The goal is to see if the program can reduce chest …

This study investigates whether a 16-week individually tailored exercise program, guided by a physiotherapist, can help adults with post-COVID POTS (postural orthostatic tachycardia syndrome) spend more time upright and feel better. Participants are randomly assigned to either th…

This study tests whether a single intravenous dose of iron (ferric derisomaltose) can improve symptoms, exercise ability, and quality of life in 150 adults with a type of heart failure called HFpEF who also have iron deficiency. Participants will receive either the iron infusion …

This study tests whether adding two ultrasound-guided nerve blocks to standard pain relief can lower opioid use and pain after coronary artery bypass grafting. 88 adults having elective bypass surgery will be randomly assigned to receive either the nerve blocks plus standard medi…

This study tests whether an 8-week mindfulness meditation program (MBSR) can reduce anxiety and depression in heart patients who have completed cardiac rehab. About 74 participants will either take the meditation course or continue with standard rehab. Researchers will measure ch…

This study tests a simpler deep-sedation method for people having a heart procedure called pulsed-field ablation to treat atrial fibrillation (an irregular heartbeat). The goal is to see if the new sedation approach is safe and makes patients more comfortable. About 40 adults wil…

This study tests whether a probiotic supplement called Neuralli® MP can help adults aged 18 to 50 who have autistic traits. Participants take two capsules daily and set their own personal goals to track progress. The trial is small and open-label, meaning everyone knows they are …

This study tests whether peer health coaching—support from someone with similar experiences—can help young adults (ages 18-26) with congenital heart disease better manage their condition. Participants receive coaching via secure phone calls and texts over 6 months. The goal is to…

This study compares two types of heart bypass surgery for people with blocked arteries: a minimally invasive approach using small incisions between the ribs versus the traditional method that opens the breastbone. Researchers want to see if the less invasive surgery leads to bett…

This study tests a simple, non-invasive device that gently stimulates a nerve in the ear (tVNS) to see if it can improve cognitive function in people over 60 with atrial fibrillation. For 6 months, 60 participants will use the device daily after exercise. Researchers will measure…

This study aimed to see if freezing certain nerves during minimally invasive heart surgery could lower pain afterward. It planned to enroll adults having mitral valve or atrial septal defect repair. However, the trial was withdrawn before any participants were enrolled, so no dat…

This study tests whether increasing the backup pacing rate from 75 to 100 beats per minute improves blood flow in adults with cardiogenic shock who already have a permanent pacemaker. Twenty-five participants in the cardiac ICU will be exposed to both rates in random order, with …

This study tests whether 10 weeks of supervised exercise training can improve heart function, oxygen use, and quality of life in people with heart failure and pulmonary hypertension. Forty participants will do three sessions per week at a cardiac rehab clinic. The goal is to see …

This study tests whether exercise delivered through immersive virtual reality can improve physical performance, muscle strength, fatigue, and quality of life in 32 adults with idiopathic pulmonary arterial hypertension. Participants will do virtual reality exercises and be measur…

This study planned to compare two versions of the water pill torsemide (immediate release vs extended release) in people with stable heart failure. The goal was to see which form helps the body get rid of extra salt more effectively after a salty meal. However, the trial was with…

This study tests whether a 12-week yoga program can improve thinking and brain health in people aged 55+ who have both heart failure and mild cognitive impairment. Participants will be split into a yoga group and a control group to compare changes in brain scans, memory tests, an…

This study follows about 5,000 people with coronary artery disease who are treated with a paclitaxel drug-coated balloon angioplasty, a procedure that opens narrowed heart arteries and releases medication to help keep them open. Researchers are combining past medical records with…

This study tests a new device called the EDEN system that records and classifies electrical signals from the heart during medical procedures. About 50 adults having heart procedures for ventricular arrhythmia or pacing will participate. The device works alongside standard equipme…

This study evaluates an AI system designed to help people with little ultrasound experience capture clear images of the heart. Researchers will review previously recorded ultrasound clips to see if the system's on-screen guidance correctly corrects the probe position and whether …

This study tests two improvements for heart catheterization done through a small artery in the wrist. First, it checks if a special patch can stop bleeding faster. Second, it sees if using ultrasound to guide the needle makes the procedure more successful. About 480 adults needin…

This study is sequencing the genes of 1665 people aged 45 to 65 to learn how genetic changes relate to health, especially heart disease. Participants provide blood samples and undergo heart tests. The goal is to improve methods for interpreting genetic data and understand how res…

This study will collect blood, urine, stool, and DNA samples from 2000 adults with heart failure to better understand how the disease progresses. Researchers will analyze proteins and other factors linked to declining heart function. Participants will be followed for up to 5 year…

This registry studies how genetic information can help doctors choose the best antiplatelet medication for people who have had a heart stent procedure. Over 1,600 participants will provide DNA samples and be followed for 12 months to track heart events and bleeding. The goal is t…

This study collects blood and other samples from people with sickle cell disease and healthy volunteers to help researchers understand how inflammation affects blood vessels. Up to 2,000 adults aged 18 and older will take part. The samples will be used in lab tests to support fut…

This study is developing a digital twin—a virtual model of the heart and blood vessels—to better understand and manage hypertrophic cardiomyopathy (HCM), a condition where the heart muscle thickens. Researchers will gather detailed health data from 2500 people with HCM or the gen…

This early-stage study will check if two different tablet forms of the drug HRS-1893 are processed the same way in the body. Thirty-six healthy adults will take both versions and have blood tests to measure drug levels. The goal is to see if the two formulations are equivalent, n…

This study tests a new imaging device called OCT-NIRAF that takes detailed pictures inside heart arteries during a standard heart procedure. Researchers want to see if the images can predict which plaques (fatty buildups) will grow and become dangerous. Forty adults with heart di…

This study tests a personalized approach to find the best beta-blocker dose for older adults with heart failure. Fifty participants will either receive the N-of-1 intervention (testing different doses in 2-week cycles) or enhanced usual care. The goal is to see if this patient-dr…

This study follows 500 people who survived a cardiac arrest to understand post-cardiac arrest syndrome (PCAS), a complex condition that often leads to death or brain damage. Researchers will compare different temperature management strategies and other treatments to see which mig…

This study follows 250 male endurance athletes who were part of an earlier study to see how their heart arteries have changed over time. Researchers will use CT scans and AI to examine plaque buildup and determine if it is stable and harmless or likely to cause heart attacks. The…

This study looks at whether a forehead EEG monitor (BIS) can be used during out-of-hospital cardiac arrest to track brain activity. Researchers will check if the device works in the ambulance and emergency room, and whether its readings help predict brain injury. The study involv…

This study looks at whether a new computer algorithm can predict if atrial fibrillation (an irregular heartbeat) will come back after a common treatment called pulmonary vein isolation. Researchers will review medical records from 300 patients who had this procedure. The goal is …

This study looks at whether sensors inside implanted heart devices can warn of worsening heart failure. Researchers will track 500 adults with heart failure or cardiomyopathy who have a Boston Scientific ICD or CRT-D equipped with HeartLogic, Sleep Incline, and Apnea Scan functio…

This study is testing a new video game designed to help teenagers with congenital heart disease learn how to manage their own healthcare. The game teaches skills like talking to doctors, understanding medical information, and keeping track of appointments and medications. About 1…

This observational study looks at why some untreated coronary artery blockages get worse over time in people who have already had a stent or balloon procedure for heart disease. Researchers will follow 1,400 adults aged 18-80 who are scheduled for a repeat angiogram, tracking the…

This study aims to improve how doctors communicate with patients facing serious illnesses like cancer, heart failure, COPD, or dementia. Researchers will give doctors detailed feedback on their conversations about goals of care. The goal is to help patients receive care that matc…

This study follows individuals with autism who carry a PTEN gene mutation, along with comparison groups, to track changes in thinking, language, and behavior over time. Researchers will also collect blood samples and medical data to build a large database for future studies. The …

This study is tracking over 5,000 adults who had a cardiac arrest outside the hospital to learn what causes it and who is at risk. Researchers will look at health habits, chronic diseases, and develop a prediction model. The goal is to find new ways to prevent these life-threaten…

This study follows 50 people who previously received an INSPIRIS RESILIA aortic valve and now need a valve-in-valve procedure because their original valve is not working well. Researchers will track complications like death, stroke, bleeding, and valve movement, as well as how we…

This study is a registry that will follow 6,000 people who had a heart attack and were treated with emergency angioplasty at Zhongshan Hospital. Researchers will collect information on their health, procedures, and medications, and track their recovery for up to two years. The go…

This study is testing an implantable heart monitor (LUX-Dx ICM) in 525 people with heart failure. The goal is to collect sensor data to better understand when heart failure events happen. Participants have moderate heart failure (NYHA class II or III) and certain heart structure …

This study looks at whether standard blood tests for heart failure show different results in African American and Caucasian patients. Researchers will compare levels of cardiac biomarkers in 400 adults newly diagnosed with heart failure. The goal is to see if current tests miss o…

This study looks at children diagnosed with a ventricular septal defect (a hole in the heart) to understand if and when the hole might close without treatment. Researchers will follow children from birth to age 14 and use echocardiography to track the defect. The goal is to build…

This study explores whether artificial intelligence (AI) combined with data from a smartwatch can predict serious heart failure events, such as hospitalizations or worsening symptoms. Adults with heart failure will wear a smartwatch for six months and take weekly ECG readings. Th…

This study tests new strategies to make sure that decisions about who gets a heart transplant or a heart pump are fair and based on objective medical criteria, not bias. Researchers will work with over 1,400 patients and doctors at heart centers across the U.S. to reduce racial a…

This study follows people who previously received NTLA-2001, an experimental gene-editing therapy, for a type of amyloidosis that can affect nerves or the heart. The goal is to monitor long-term safety and see if the therapy's effects on disease markers persist over time. Partici…

This study looks at how dapagliflozin, a diabetes drug, affects heart function and metabolism in people with chronic kidney disease. Researchers will measure heart strain, oxygen use during exercise, and blood chemicals in 60 adults. The goal is to understand how the drug works b…

This registry follows 500 people receiving a specific type of surgical aortic valve replacement (the INSPIRIS RESILIA valve) for up to five years. Researchers are tracking how pre-existing conditions like kidney disease, diabetes, and high blood pressure affect survival and valve…

This long-term study follows over 121,000 female nurses to explore how hormones, diet, lifestyle, and genetics affect the risk of heart disease and stroke. Researchers are analyzing blood samples to create a 'metabolomic risk score' that could help predict coronary heart disease.…

This study examines genetic test results from over 600 people who had acute myocarditis (heart muscle inflammation) confirmed by MRI. Researchers want to find out how common certain gene variants are in this group and whether they are linked to worse outcomes like heart failure o…

This study investigates whether muscle mass, measured automatically from CT scans using artificial intelligence, can help predict recovery in people who survive a cardiac arrest. Researchers will also test an enhanced rehabilitation program that includes muscle stimulation and gu…

This study tests whether a 12-lead wearable Holter monitor can be worn during MRI, CT, X-ray, and echocardiography without affecting image quality or the device's ability to record heart signals. Researchers will enroll 500 adults who need these imaging exams and will check for e…

This large trial tests whether a coordinated community approach can improve survival and brain function after cardiac arrest. The plan includes faster 911 dispatch, CPR instructions over the phone, public CPR and AED training, and better first responder performance. About 20,000 …

This study aims to better understand atrial fibrillation (AFib), the most common abnormal heart rhythm. Researchers will use mobile devices like ECG patches and a smartphone app to monitor heart rhythm, activity, and sleep in 3,000 adults, some with AFib and some without. Partici…

This study looks at whether a quick, simple test—standing up and sitting down from a chair as many times as possible in one minute—can help predict how heart failure patients will fare after leaving the hospital. Researchers will follow 68 adults hospitalized for decompensated he…

This study collects blood and tissue samples from up to 500,000 adults, including heart patients, their family members, and healthy individuals. Researchers will analyze these samples to find molecular and genetic markers linked to heart disease. The goal is to improve understand…

This study looks at how data from wearable devices (like activity trackers and heart monitors) relates to heart and muscle function in people with a type of heart failure called HFpEF. Researchers will compare 60 adults with and without HFpEF using tests like MRI, exercise testin…

This pilot study investigates whether a continuous remote ECG monitor, worn as a chest patch, can predict hospital readmission or death within 30 days after discharge in patients with heart failure and atrial fibrillation. Fifty participants will wear the Vivalink ECG patch at ho…

This study compares two procedures—rotational atherectomy and intravascular lithotripsy—used to treat severe calcium deposits in heart arteries. The goal is to see how each technique affects the tiny blood vessels (microcirculation) of the heart and whether one leads to better lo…

This study looks at whether detailed analysis of heart MRI images (called radiomics) can better predict life-threatening heart rhythms in people with hypertrophic cardiomyopathy (HCM), a condition where the heart muscle thickens. Researchers will also see if the drug mavacamten, …

This pilot study tests whether keeping the lungs gently ventilated during cardiopulmonary bypass (heart-lung machine) reduces lung collapse after heart surgery. Adults having elective coronary artery bypass surgery will be randomly assigned to receive ventilation or not during by…

This study investigates whether a protein called DISC1, known for its role in schizophrenia, is also linked to heart function in people with the condition. Researchers will measure DISC1 levels in blood and use heart imaging (echocardiograms, cardiac MRI, and ECGs) to assess hear…

This study looks at how different levels of pressure from a breathing machine (called PEEP) affect the heart's pumping ability in 28 adults having heart surgery. Doctors will use special imaging and monitors to measure heart function at four different pressure settings. The goal …

This observational study looks back at 22,000 adults in Sweden diagnosed with infective endocarditis, a serious heart valve infection, since 1997. By linking national health records, researchers aim to understand which patients benefit most from valve surgery and what factors aff…

This study looks at whether bosentan, a drug that blocks a natural vessel-constricting substance, can improve blood flow in the tiny heart vessels of people with angina who have no major blockages. About 45 participants will get bosentan for 4 weeks and have MRI scans before and …

This study is gathering health information from 4,600 people in rural areas of Alabama, Kentucky, Louisiana, and Mississippi. Researchers will look for risk factors that lead to heart and lung disease. No treatments or drugs are being tested. The goal is to learn more about what …

This study follows over 3,400 adults who have had a heart stent procedure to understand how continuity of care, health literacy, and medication adherence influence their long-term health. Researchers will track hospital readmissions, medication use, and patient-reported outcomes …

This study compares six different ECG patches that people wear for a week to monitor heart rhythms. Researchers want to see which patches give the clearest and most useful recordings. The study involves 150 adults aged 65 and older who already need heart monitoring as part of the…

This study looks at how high blood pressure changes the heart's structure in people who work rotating shifts in the Arctic. Researchers will track 550 workers over a year using heart ultrasounds and blood tests. The goal is to understand why some develop heart failure, not to tes…

This study looks at why people who have had an organ transplant are more likely to get cancer. Researchers will combine existing health records from over 85,000 transplant patients in England to track cancer cases and deaths. The goal is to better understand risks and improve car…

This study explores whether artificial intelligence can predict which children with a type of heart hole (perimembranous ventricular septal defect) will later develop complications like valve problems or blockages. Researchers will analyze past echocardiogram reports and medical …

This study was designed to compare electrical and mechanical activation of the right ventricle in adults who had surgery for Tetralogy of Fallot, a congenital heart condition. Researchers planned to use 3D mapping and imaging to see if electrical signals match the heart's physica…

This study tests whether a special CT scan (CCTA) of the heart can predict if atrial fibrillation will come back after a standard ablation procedure. Researchers will scan patients before their first ablation and then follow them for a year. The goal is to see if heart structure …

This observational study tracks 5,000 people taking common blood thinners (like rivaroxaban or apixaban) or antiplatelet drugs (like aspirin). Researchers regularly measure drug levels in the blood to see how they relate to clots or bleeding events. The goal is to find the best d…

This study looks at people with persistent atrial fibrillation (an irregular heartbeat) and moderate-to-severe functional mitral regurgitation (a leaky heart valve). Researchers want to see if a procedure called catheter ablation—which zaps abnormal heart tissue to restore normal…

This study follows 280 people with mitral valve prolapse over 3 years to see if heart MRI scans and blood tests can predict who will develop dangerous heart rhythms or heart muscle changes. Participants undergo MRI, blood draws, and heart monitoring. The goal is to find early war…

This study looks at whether using a simple bedside ultrasound exam on all hospitalized patients can shorten their hospital stay. Researchers will check the heart, kidneys, liver, and lungs for common problems. The goal is to see if this routine check helps doctors make faster dec…

This study tests a machine-learning tool built into electronic health records to help emergency doctors quickly assess risk in adults with acute heart failure. The tool predicts which patients are at high risk of complications and likely need hospital admission, and which low-ris…

This study looks at 90 people who recently had a heart attack and have other artery narrowings that may or may not be dangerous. Researchers will use two types of scans—optical coherence tomography (OCT) and magnetic resonance angiography (MRA)—to see if they can tell which narro…

This study tracks 130 people with chronic heart failure to understand how taking multiple medications (polypharmacy) affects their safety, adherence, and health outcomes. Researchers will look for patterns of over- or under-prescribing and factors linked to low medication adheren…

This study compares a new X-ray system (Azurion R4.0) to an older version during heart procedures like angiography. The goal is to see if the new system lowers the radiation dose patients receive while still allowing doctors to work effectively. About 824 adults from several coun…

This study looks at how blood flow in the feet changes during a 12-week heart and blood vessel rehab program for people with narrowed arteries. Researchers will track 80 adults with conditions like peripheral artery disease or coronary artery disease. The goal is to better unders…

This study collects tissue samples from 1,000 people having heart valve surgery to find genetic causes of calcific aortic valve disease. Researchers will compare normal and diseased tissue to understand why the disease develops. Participants must be at least 20 years old and have…

This study tests whether artificial intelligence can help doctors see heart valve structures more clearly during a minimally invasive repair procedure called TEER. Researchers will use data from 1,500 patients who have already had the procedure to train and test the AI. The goal …

This study reviewed medical records of 1000 people who received a special balloon treatment (drug-coated balloon angioplasty) for blocked heart arteries between 2009 and 2015. Researchers tracked major heart problems like death, heart attacks, or need for repeat procedures for up…

This study looks at women who have had a heart attack or unstable angina but do not have major blockages in their heart arteries. Doctors will use special imaging techniques, like IVUS and MRI, to find hidden causes such as cholesterol plaque in artery walls or problems with tiny…

This study looks at whether the amount of carbon dioxide a person breathes out during CPR can help predict if they will survive a cardiac arrest that happens outside a hospital. Researchers are reviewing records from 3,500 adults who had a cardiac arrest and were treated by emerg…

This study uses advanced CT scans to look for fat and scar tissue inside the heart. Researchers want to see if these findings can help predict who is at risk for dangerous heart rhythms. About 110 adults with heart disease who already have a defibrillator or need one will get a C…

This study is enrolling 15,000 adults who are already scheduled for a coronary CT angiography (CCTA) scan. Researchers will analyze the scan images along with participants' health outcomes over time. The goal is to see if detailed information from the scans can help doctors more …

This study is for heart failure patients who do not have a specific heart rhythm pattern called left bundle branch block (non-LBBB). These patients often get a device called CRT-D, which combines a pacemaker and a defibrillator, but not everyone responds well. Researchers will fo…

This study examines how different hospital treatments—sedation, temperature control, and blood pressure management—after a cardiac arrest impact kidney function. Researchers will follow 3500 adults who were resuscitated from a heart attack outside the hospital. The goal is to und…

This study looks at whether adding a stress CT scan that checks blood flow to the heart muscle helps doctors decide the best treatment for people with known or suspected heart disease. About 2000 adults will be followed to see if this extra test reduces the need for more tests an…

This study tests a redesigned clinical decision support tool for heart failure patients during virtual visits. The tool gives doctors medication recommendations and tips for patients to upload their vitals at home. Researchers will compare it to the usual tool in a small pilot wi…

This study tests a new computer tool that gives doctors personalized reminders when prescribing heart failure medications. The goal is to help doctors follow treatment guidelines more closely. About 764 doctors from cardiology and primary care clinics are taking part.

This study looks at whether training nurses with realistic simulations helps them perform CPR and use defibrillators better during cardiac arrest. About 134 experienced nurses will take part. The goal is to improve patient survival by boosting nurses' skills.

This study gathers 35-50 international critical care experts to agree on how to classify and manage septic shock using point-of-care ultrasound. The goal is to create consensus statements that could help personalize treatment. No patients are enrolled; instead, experts complete s…

This study tests a web-based tool called gp-multitool.de that helps general practitioners follow guidelines for older patients with multiple chronic conditions. About 659 patients from GP practices in Germany are taking part. The tool lets patients fill out questionnaires online …

This study looks at 320 people with complex coronary artery disease who need a stent. It compares using a special camera (OCT) versus standard X-ray (angiography) to guide the stent placement. The goal is to see which method leads to better blood flow after the procedure.

This study will collect and analyze genetic data from 1000 people with suspected inherited metabolic diseases, including conditions like epilepsy and mitochondrial disorders. Researchers at Karolinska University Hospital aim to improve diagnosis by using advanced genetic testing …

This pilot study looks at whether a simple, non-invasive eye scan (OCT-A) can detect early signs of memory decline in people with atrial fibrillation, a common heart rhythm disorder. Researchers will compare retinal blood vessel patterns in 40 patients with and without mild cogni…

This early study is testing whether the diabetes and heart failure drug empagliflozin (Jardiance) is safe for people on dialysis for kidney failure. The drug is already approved for other uses but has not been studied in dialysis patients. Researchers will give 24 participants ei…

This study looks at how serious combat injuries affect the long-term health of U.S. military members. Researchers will measure heart function, sleep quality, and stress-related body signals in 200 injured service members. The goal is to understand links between injury severity, s…

This study examines whether a low pulse pressure (the difference between top and bottom blood pressure numbers) in the first hours after a cardiac arrest is linked to early death. Researchers will analyze data from 3500 patients who had a cardiac arrest outside the hospital and a…

This study was designed to see if early mobilization and a simple bottle-based breathing device (Bottle-P.E.P.) could improve breathing and physical function in people recovering from heart valve surgery. The trial was withdrawn before enrolling any participants, so no results ar…

This study looks at whether diabetes or blood sugar problems can worsen thinking and memory issues in people with myotonic dystrophy type 1. Researchers will use MRI brain scans and thinking tests over 4 years to track changes. The goal is to understand why some patients have mor…

This study looks at whether a special heart MRI, done within a week of a heart attack, can help doctors better predict a patient's future health. Researchers will follow 2,000 adults for years to track serious heart events like another attack or heart failure. The goal is to lear…

This study collects data from 1,200 patients undergoing surgery for aortic dissection, a life-threatening tear in the heart's main artery. Researchers will track death rates, strokes, and other complications to identify the safest surgical strategies. The goal is to improve outco…

This study aimed to see if music therapy and mindfulness meditation could help people who had coronary artery bypass surgery improve their blood pressure, heart rate, anxiety, and depression. It planned to enroll 48 adults who had the surgery and were stable. However, the study w…

This study follows 500 people with peripheral artery disease (PAD) who undergo a procedure to open blocked leg arteries. Researchers check blood and heart ultrasound before and after the procedure to find hidden heart injury. The goal is to see if certain markers can predict futu…

This study looks at whether a special MRI scan can detect early scarring in the heart muscle of people with leaky heart valves. The goal is to find a way to predict when the heart might start to fail, so doctors can decide on surgery sooner. About 316 adults with moderate to seve…

Over two million people in the UK have a chronic condition like diabetes or heart disease without knowing it. This study will use information from 4.5 million hospital patients to build a digital platform that spots those at risk. The goal is to help doctors diagnose these condit…

This study follows over 3,400 people who have already received the Aveir VR leadless pacemaker, a small device placed directly in the heart to treat slow heart rhythms. Researchers are using real-world medical records to check for complications up to 10 years after implantation. …

This study follows 100 ICU patients who developed new atrial fibrillation (AF) during their stay. Using a chest-worn heart monitor, researchers track whether AF returns after leaving the ICU and up to 3 months after hospital discharge. The goal is to understand who might need lon…

This study is looking at whether an artificial intelligence tool can help doctors decide which heart surgery patients might benefit from a drug called ulinastatin. Ulinastatin is used to reduce inflammation after surgery, but it doesn't work for everyone. Researchers will analyze…

This study looks at whether giving a personalized dose of a radioactive tracer (rubidium-82) based on a patient's weight can improve the quality of PET heart scans. Researchers will enroll 48 adults with known or suspected heart disease and divide them into four weight groups. Th…

This study looks at two methods for treating atrial fibrillation (an irregular heartbeat) using a special balloon catheter. The goal is to see if using a 3D mapping system (CARTO) makes the procedure faster and safer than using X-ray guidance alone. About 60 adults with paroxysma…

This study looks at how a common heart valve procedure called TAVI changes the gut microbiome in older adults with aortic stenosis. Researchers will collect blood and stool samples before and three months after TAVI to measure bacterial byproducts and diversity. The goal is to se…

This study aimed to validate several blood biomarkers (like NT-proBNP and IL-6) to help doctors assess atrial fibrillation burden and track treatment effectiveness. Researchers planned to analyze samples from 266 patients before and after treatment. However, the study was withdra…

This study looks at 50 adults hospitalized with acute decompensated heart failure who need intravenous diuretics (water pills). Researchers want to see if a non-invasive monitor called the Starling System can accurately measure changes in heart function as fluid is removed. The g…

This study looks at whether measuring salt levels in the kidneys using a special MRI can help doctors predict which heart failure patients will not respond well to water pills (diuretics). About 50 adults with heart failure and kidney disease will be scanned to compare salt conte…

This study follows 331 adults with hypertrophic cardiomyopathy (HCM) to see how they are treated in everyday medical practice, especially with the drug mavacamten. Researchers will collect data on diagnosis, symptoms, treatments, and outcomes over time. The goal is to understand …

This study is testing a new type of clinic that screens people with prediabetes and type 2 diabetes for several hidden health problems at the same time, including fatty liver disease, sleep apnea, and heart failure. The goal is to see how common these undiagnosed conditions are a…

This study looks at over 1,200 adults with type 2 diabetes and heart muscle problems to see if diabetic cardiomyopathy is a unique condition. Researchers will use detailed medical tests, imaging, and biological data to find patterns. The goal is to better understand and diagnose …

This study looks at whether a computer model can predict heart injury after major orthopedic surgery in patients 65 and older. Researchers will combine blood tests, frailty scores, and other health data to build a machine learning tool. The goal is to help doctors spot high-risk …

This study looks at whether a new screening system can help doctors find heart complications early in high-risk patients after noncardiac surgery. Researchers will track 900 patients to see how well the screening works in practice and what it costs. The goal is to gather informat…

This large real-world study will follow 10,000 Italian patients with COPD to see how their treatments, flare-ups, and other health conditions affect their risk of death. Researchers will collect data on medications, lung function, and heart problems over time. The goal is to bett…

This international registry is collecting information from 2000 people who have had spontaneous coronary artery dissection (SCAD), a rare cause of heart attacks. Researchers will track participants' health over time to better understand the condition and develop best practices fo…

This study looks at whether a pre-surgery test called FFR can predict how well arterial bypass grafts work six months after coronary artery bypass grafting (CABG). About 120 patients with multi-vessel heart disease will have an FFR test during their diagnostic angiogram. Six mont…

This study is a large international registry that will collect data from up to 130,000 people who have had a heart attack or unstable chest pain. Researchers will track treatments, outcomes, and safety to understand what works best in real-world care. No new drugs or devices are …

This study watches 40 adults who need a leadless pacemaker to see if where the device sits inside the heart changes heart rhythm or pumping strength. Researchers will use CT scans and ECGs to check heart function and valve leakage. The goal is to find the best spot for the pacema…

This study tests whether adding automatic reminders to echocardiogram (heart ultrasound) reports can increase the number of patients with heart valve disease who see a cardiologist within six months. Researchers will randomly assign 300 patients' reports to receive no prompt, a p…

This study looks at blood samples from 682 adults who survived a cardiac arrest outside the hospital. Researchers are analyzing proteins to find new markers that could help predict recovery and understand the body's response after the heart stops. The goal is to discover potentia…

This study is a registry that collects information and blood samples from over 2,400 people with atrial fibrillation who are scheduled for a heart procedure called ablation. The goal is to learn which patients benefit most from the procedure and to better understand what causes a…

This study checks if insulin resistance (when your body doesn't use insulin well) can predict whether a heart procedure called pulsed field ablation will work for people with atrial fibrillation (an irregular heartbeat). About 120 non-diabetic patients having their first ablation…

This study aimed to compare two versions of the water pill torsemide (extended release vs immediate release) in adults with stable heart failure. Participants would have taken each version for a week, then had their sodium excretion measured after a single dose and a salty lunch.…

This study looks at 224 adults who had surgery as children for a heart defect called tetralogy of Fallot. Researchers are using MRI scans and blood tests to measure scarring in the heart muscle. They want to see if this scarring is linked to serious heart problems like arrhythmia…

This study looks at real-world data from 6,000 heart failure patients to compare a newer pacing method (conduction system pacing) with the standard method (biventricular pacing). The goal is to see if the newer approach is just as safe and effective at reducing heart failure hosp…

This study looks at whether giving doctors early results from heart biomarker tests (NT-proBNP and hs-cTnT) along with a structured interpretation note can improve outcomes for patients admitted with rapid breathing (tachypnea). About 574 adults will be randomly assigned to recei…

This study looks at 600 adults with non-compaction cardiomyopathy, a rare heart muscle condition that can lead to heart failure, stroke, or dangerous heart rhythms. Researchers will use heart scans, genetic tests, and health records to find better ways to predict who is at highes…

This study looks at whether mepolizumab, a drug already used to reduce asthma attacks, can also improve physical activity and exercise tolerance in people with severe asthma. Researchers will track daily steps and activity levels in 62 adults over six months. The goal is to see i…

This study looks at 2,000 people who had a heart attack to see if checking the stiffness of their blood vessels one month later can help predict future heart failure, another heart attack, or bleeding. Researchers will track participants for several years to identify which measur…

This study tests a web-based platform called 'My Voice' that helps heart failure patients learn about their illness, decide on end-of-life care goals, and share those wishes with doctors and caregivers. About 244 patients in Singapore will use the tool to see if it increases adva…

This study uses advanced heart MRI scans to look for the earliest signs of dilated cardiomyopathy (a weakened heart muscle) in close relatives of people already diagnosed. Researchers will follow 650 family members over time to see how genetic factors relate to heart changes. The…

This study was designed to compare a newer pacing method (left bundle branch area pacing) with the standard method (right ventricular pacing) in patients who developed heart block after TAVR valve replacement. The goal was to see which method better preserves heart function and r…

This study looks at 40 people who recently had a heart attack and had one blockage treated. Researchers will use special pressure wires and optical imaging to examine other blockages that were not treated. The goal is to see how many of these leftover blockages are actually dange…

This study looks at how doctors treat people having a severe heart attack complicated by cardiogenic shock, where the heart can't pump enough blood. Researchers will track 124 patients at 20 U.S. hospitals to see how decisions about using mechanical heart support devices affect s…

This study tracks 40 people with nasal polyps and severe asthma who are taking mepolizumab, a drug that reduces inflammation. Researchers collect nose, blood, and sputum samples before treatment and at 3, 6, and 12 months to see how the drug affects symptoms, nose bacteria, and g…

This study involves 3,600 people who have had a heart stent placed. Researchers want to see if a special cholesterol test (VAP) can help predict when the artery narrows again. Participants provide a blood sample from routine care, and no extra blood draws are needed. The goal is …

This study looks at how certain blood components and heart imaging patterns might help predict the worsening of aortic stenosis, a common heart valve condition in older adults. Researchers will study 65 people with mild or moderate aortic stenosis and compare them to healthy cont…

This study looks at whether a new type of heart medication, called a cardiac myosin inhibitor, can improve blood flow in the small blood vessels of the heart in people with hypertrophic cardiomyopathy (HCM). Researchers will use special ultrasound imaging to measure blood flow be…

This small pilot study is testing whether a gentle, non-invasive electrical stimulation on the ear (auricular vagus nerve stimulation) can change how the heart's electrical system works. Ten people who are already scheduled for a heart procedure will receive the stimulation while…

This study collects tissue and blood samples from 200 people with advanced heart failure who are getting a heart pump or transplant. Researchers will use these samples to learn more about the disease. No new treatments are being tested, and the study does not change how patients …

This study is a large registry that collects medical data and tissue samples from 30,000 people with heart disease and healthy volunteers. Researchers will analyze this information to better understand risk factors, treatments, and outcomes for various heart conditions. The goal …

This study follows 2,600 adults with coronary heart disease and depression who received a stent. Researchers track major heart problems like heart attacks or death over one year to find what predicts these events. The goal is to better understand the link between depression and h…

This study tests whether watching storytelling videos can help African American and Black patients with atrial fibrillation (an irregular heartbeat) start and continue taking blood thinners to prevent strokes. About 80 adults who are not currently on blood thinners but have a hig…

This study is observing 2,000 people who have had a heart attack to collect detailed medical information, images, and blood samples. Researchers will use this data to better understand different types of heart attacks and find new ways to predict and prevent future heart problems…

This study was designed to see if a test using acetylcholine could predict whether people with congenital heart disease and high blood pressure in the lungs would develop worsening high blood pressure after surgery to close a heart shunt. The test would have measured how well the…

This study looks at whether a heart valve replacement procedure called TAVI can be safely performed in hospitals that do not have on-site cardiac surgery backup. It involves 657 patients with severe aortic stenosis who are at high risk for surgery. The same experienced doctors pe…

This study looks at whether a simple, painless eye ultrasound can help doctors predict brain damage and survival in people who have had a cardiac arrest. Researchers will measure the optic nerve sheath diameter in 80 adults and compare it with other tests. The goal is to find a f…

This study tests whether using game-like rewards and personal coaching can encourage older adults to walk more after leaving the hospital. About 350 people aged 50 and older with conditions like high blood pressure or heart failure will wear a Fitbit to track their steps. The goa…

This study enrolls 80 people with implanted heart devices to see if collecting extra health data from wearables and a phone app can improve care. Participants must have had a heart failure event in the past year. The goal is simply to gather data, not to test a new treatment.

This study at Boston Children's Hospital will test whether measuring thousands of proteins in a few drops of blood can predict which children with congenital heart disease will have serious complications after heart surgery. Researchers will collect blood samples from 60 children…

This study is looking for the genetic causes of bicuspid aortic valve disease, a common heart condition where the aortic valve has two flaps instead of three. Researchers will analyze DNA from 11,000 participants, including patients and their relatives, to find gene changes linke…

This study examines whether a common gene variation (CYP2C19) influences the long-term risk of serious heart and blood vessel events, such as heart attacks, strokes, and limb problems, in people with vascular disease. Researchers will analyze genetic and health data from 13,000 p…

This study observes how doctors use a special imaging technique called OCT during heart stent procedures in routine care. Researchers will track 2,000 patients with heart artery blockages to see if using the MLD-MAX algorithm helps achieve better stent placement. The goal is to u…

This study follows 200 people who had a heart valve replacement (TAVI) to see how often they experience heart rhythm problems in the weeks after the procedure. Participants wear a portable ECG monitor for up to 4 weeks after leaving the hospital. The goal is to learn how common t…

This observational study follows 95 people with heart failure and preserved ejection fraction who are already receiving weight loss treatment as part of their standard care. Researchers will measure muscle blood flow, fat content, and inflammation before and after at least 7% wei…

This study tests whether a virtual group program can help people who survived a cardiac arrest and their relatives. About 50 participants will either join the virtual group or receive a digital booklet. The goal is to see if the program is practical and helpful for improving reco…

This study planned to use a machine learning algorithm to estimate blood potassium levels from a single-lead ECG in hospitalized patients. It was designed as a retrospective analysis of existing data from a home hospital program. However, the study was withdrawn before enrolling …