Heart disorder

This phase 2 trial tests whether a single dose of LX2006 gene therapy can improve heart muscle thickening and damage in people with Friedreich ataxia, a genetic disorder that often leads to life-threatening cardiomyopathy. Participants aged 6 and older with confirmed heart enlarg…

This study tests a new medicine called NNC0487-0111 in about 5,600 people who have both heart failure and obesity. Participants receive either the drug or a placebo as a weekly injection. The goal is to see if the drug reduces the risk of heart failure worsening, hospitalization,…

This trial tests an external ventricular assist device that temporarily takes over the heart's pumping function in people with cardiogenic shock—a condition where the heart can't pump enough blood. The study enrolls 40 adults who have shock after heart surgery, can't come off a h…

This trial tests whether a noninvasive procedure called RE-START, which uses a blood pressure cuff to temporarily stop blood flow in the arm, can improve blood flow in the heart's arteries before standard angioplasty in people having a severe heart attack (STEMI). The study invol…

This study tests a device that uses radiofrequency energy to treat high blood pressure in the lungs (pulmonary hypertension) in people with heart failure. The goal is to see if it can reduce serious heart events like hospitalizations or death. About 750 adults with stable heart f…

This study tests an investigational drug called omecamtiv mecarbil in 1,800 adults with severe heart failure and a very weak heart pump. The goal is to see if it can lower the risk of heart failure worsening, hospitalization, need for a heart pump or transplant, or death. Partici…

This study tests whether inclisiran, a twice-yearly injection that lowers cholesterol, can prevent major heart and limb events in 6,000 people who recently had artery-opening procedures. Participants receive either inclisiran or a placebo shot at the start, at 90 days, and every …

This study is testing a new heart valve called Hydra for people with severe aortic stenosis, a condition where the heart's main valve becomes narrow. About 250 participants will get the valve through a tube in an artery, and researchers will check how safe and effective it is for…

This trial tests whether a chitosan-based pad, made from crustacean shells, can control bleeding at the femoral puncture site better than the traditional sandbag after coronary angiography or intervention. It will compare bleeding, pain, comfort, and sleep quality in 480 adults u…

This Phase 3 trial tests whether DYNE-101 can improve muscle function and daily life in 150 adults with myotonic dystrophy type 1 (DM1). Participants receive either the drug or a placebo by IV every few weeks for 48 weeks. The study measures how quickly people can stand from a ch…

This study is testing whether an AI-driven system called SMART-CHD can improve outcomes for adults aged 18-45 with premature coronary artery disease. Participants will use a mobile app and wearable sensors to track their health and receive personalized guidance. The goal is to se…

This study tests an experimental drug called linvoseltamab in 220 people with AL amyloidosis that has returned or not improved after prior therapy. The drug aims to reduce abnormal proteins that damage organs like the heart and kidneys. The trial first finds the safest dose, then…

This study looks at whether taking just one blood thinner (a P2Y12 inhibitor) is as safe and effective as taking two blood thinners (dual antiplatelet therapy) for people with stable heart disease who have a drug-coated balloon procedure without a stent. About 2,170 adults will b…

This early-stage trial is testing a new drug called DNL952 in 32 adults with late-onset Pompe disease. The main goal is to check if the drug is safe and how the body processes it. Participants will receive the drug through an IV infusion at different doses.

This study tests a new device called the VDyne System, which is placed inside the heart through a tube in a blood vessel to replace a leaky tricuspid valve. The trial will include 730 people with severe symptoms who have not improved with medication. Researchers will compare the …

This trial tests whether a new transcatheter heart valve (Myval) works as safely and effectively as two existing valves (Sapien and Evolut) in people with severe aortic stenosis, a condition where the heart's main valve narrows. About 768 patients who are eligible for valve repla…

This trial is testing an experimental drug called HS235 in obese adults who have both pulmonary hypertension and heart failure with preserved ejection fraction. The study aims to see if the drug is safe, how it moves through the body, and whether it can improve heart and lung fun…

This trial tests whether planning coronary artery bypass grafting (CABG) using a non-invasive CT scan (CCTA) works as well as the standard invasive angiography (CAG). About 826 people with blocked heart arteries will be randomly assigned to have their surgery planned with one of …

This study tests whether opening blood vessels (vasodilation) or removing fluid (diuretics) is better for treating sudden fluid buildup in the lungs from heart failure. About 1,100 adults with severe shortness of breath and low oxygen levels will receive one of three treatments i…

This first-in-human study tests a new device called Pulse IVL that uses sound waves to break up calcium buildup in heart arteries. Up to 15 people with coronary artery disease will receive the treatment before getting a stent. The goal is to see if the device is safe and helps op…

This study tests a new heart pump called BrioVAD for people with severe heart failure that doesn't get better with standard treatments. The pump uses magnetic levitation to help the heart pump blood. About 780 adults will get either the BrioVAD or an existing pump to see if the n…

This study tests an oral drug called KT-621 in 264 adults with moderate to severe eosinophilic asthma that is not well controlled by current treatments. Participants will take either KT-621 or a placebo daily for several weeks. Researchers will measure changes in lung function an…

This trial asks whether giving children a low-dose ketamine infusion after heart surgery can protect their brains from damage. Children aged 1 to 60 months undergoing surgery for certain congenital heart defects will receive either ketamine at one of two doses or no ketamine. Res…

This study tests whether adding extra scar lines in the heart, along with the standard vein isolation procedure, helps people with persistent atrial fibrillation stay in normal rhythm longer. About 640 adults aged 18–80 with symptomatic, drug-resistant persistent AFib will be ran…

This trial investigates whether adding either metolazone or acetazolamide to standard loop diuretics helps adults hospitalized with acute heart failure and fluid overload. Participants are randomly assigned to one of three treatment arms, and the study tracks days alive and out o…

This study tests whether providing home-delivered low-sodium meals and short-term dietary counseling helps older veterans with heart failure recover better after a hospital stay. About 1,400 veterans aged 60 and older will be randomly assigned to receive either the meals plus cou…

This Phase 3 study tests a drug called nucresiran in 1250 people with ATTR amyloidosis, a rare disease where abnormal proteins damage the heart. Participants receive either nucresiran or a placebo every 6 months. The goal is to see if the drug reduces deaths and heart-related hos…

This study is checking how well a new drug-coated stent (Coroflex ISAR NEO) works in people with coronary artery disease. Researchers will follow 3,000 patients who get the stent during a routine procedure to see if it keeps arteries open safely. The goal is to confirm the stent …

This Phase 3 trial tests a gene therapy called FLT201 for adults with Gaucher disease type 1. The goal is to see if a single dose can keep blood counts stable so patients can stop their regular enzyme replacement or substrate reduction therapy. The study will enroll 45 people who…

This study tests a device that creates a small opening between the heart's upper chambers to relieve pressure in people with chronic heart failure. Unlike other shunts, this one leaves no permanent implant behind. The trial will compare the device to a sham procedure in 700 patie…

This study tests the drug acalabrutinib in people with chronic lymphocytic leukemia (CLL) who also have moderate to severe heart failure. Researchers want to see if acalabrutinib causes fewer heart-related side effects compared to other standard treatments. About 60 adults will t…

This study compares two standard procedures—minimally invasive TAVR and open-heart surgery (SAVR)—for replacing a diseased aortic valve in people with a bicuspid aortic valve. About 1,200 participants aged 50 and older with severe aortic stenosis will be randomly assigned to one …

This study tests a new device that creates a small passage in the heart to relieve pressure, without leaving a permanent implant. It is for 350 people with heart failure and reduced pumping ability. The goal is to see if it reduces deaths, need for a heart pump or transplant, and…

This trial investigates whether a five-week vegetarian diet can dampen the inflammatory response of the immune system in people who recently had a heart attack, as well as in healthy volunteers. Participants will follow a vegetarian diet for five weeks, then return to their usual…

This study follows 550 patients whose first TAVI heart valve has failed. Researchers will compare a second TAVI procedure (redo TAVI) with open-heart surgery or medication alone. The goal is to see which approach works best and why, helping doctors make better decisions for futur…

This study is tracking 1000 people with atrial fibrillation who receive the WATCHMAN FLX Pro device, a small implant that closes off a part of the heart to prevent blood clots from causing strokes. The goal is to see how safe and effective the device is in everyday medical practi…

This study is testing a new, wire-free pacemaker called LivIQ in 325 people who need a pacemaker for a slow heartbeat. The goal is to see if it is safe and works well to keep the heart beating at the right pace. Participants will be followed for several months to check the device…

This trial is testing whether a higher dose of adenosine, a drug used during cardiac MRI to stress the heart, improves blood flow imaging compared to the standard dose. The study includes 180 adults with suspected or known coronary artery disease or heart failure. By comparing th…

This study tests a new device called the VDyne System, which is placed through a tube in a blood vessel to replace the tricuspid valve in the heart. It is for people with severe tricuspid regurgitation, a condition where the valve does not close properly, causing blood to leak ba…

This trial tests whether slowly lowering the speed of a Left Ventricular Assist Device (LVAD) — a mechanical pump that helps a failing heart — can encourage the heart muscle to work harder and recover. The study enrolls people with end-stage heart failure who are waiting for a he…

This study tests whether the drug CardiolRx can prevent another episode of pericarditis (inflammation around the heart) in people who have had repeated attacks. About 110 adults who have been stable on an IL-1 blocker for at least a year will stop that medication and receive eith…

This study is testing a digital app called VIRTUES that provides educational resources and treatment recommendations for heart conditions like atrial fibrillation and heart failure. Researchers will enroll 2000 patients across 11 modules to see if the app is easy to use and helps…

This study tests whether a personalized blood-thinner plan can reduce bleeding in people with coronary artery disease who have received a heart stent. About 3,944 participants will either get the usual dual antiplatelet therapy (two blood thinners) or a shorter course followed by…

This study follows 580 adults with atrial fibrillation who are treated with the PulseSelect PFA system, a device that uses electrical pulses to fix irregular heartbeats. Researchers will monitor participants for 36 months to see how well the procedure prevents heart rhythm proble…

This study is a registry that follows about 960 people with coronary artery disease who are treated with a special balloon coated with a drug called sirolimus. The balloon is used to open blocked heart arteries. Researchers will track heart-related events like death, heart attack…

This early trial tests a device that keeps donor hearts cool and oxygenated during transport, instead of the usual ice cooler. The goal is to see if this method is safe and works for heart transplants from both brain-dead and circulatory-death donors. Twenty adult patients awaiti…

This study tests whether starting inclisiran early during a hospital stay for a heart attack can lower bad cholesterol more than a placebo, when both are added to standard care. About 300 adults hospitalized for a heart attack will receive either inclisiran or a placebo shot at t…

This study tests whether a single dose of rituximab, a drug that calms the immune system, can help the heart pump better six months after a severe type of heart attack called an anterior STEMI. About 372 adults who have just had such an attack will receive either rituximab or a p…

This study is testing a pacemaker lead placed in a specific area of the heart called the left bundle branch area. The goal is to see if this placement is safe and helps the heart beat more naturally in people with slow heart rates. About 140 participants will get the lead and be …

This trial tests whether a non-invasive mapping system called VIVO can help doctors locate the source of a dangerous heart rhythm called ventricular tachycardia (VT) before an invasive procedure. Patients with structural heart disease who need catheter ablation will be randomly a…

This trial asks whether clamping the umbilical cord at 120 seconds after birth is better than clamping at 30 seconds for babies born with congenital heart disease. About 500 infants with a prenatal heart defect diagnosis will be randomly assigned to one of the two timings. Resear…

This trial tests whether starting respiratory physiotherapy within one hour of breathing tube removal after elective coronary artery bypass surgery improves lung function and reduces complications compared to waiting until the next day. Forty adults undergoing planned heart surge…

This study tests a new device that uses extreme cold to destroy small areas of heart tissue causing a dangerous fast heartbeat called ventricular tachycardia. The trial will include 100 adults with this condition who have not responded to medication. Researchers will check if the…

This study tests whether a newer, less invasive procedure called transcatheter aortic valve replacement (TAVR) using the J-VALVE device is as safe and effective as traditional open-heart surgery for people with severe aortic regurgitation (a leaky heart valve). About 1,250 adults…

This trial tests an implantable device called the Shockwave Reducer for people with severe, persistent chest pain (refractory angina) who cannot have standard treatments like stents or bypass surgery. About 380 participants will either receive the device or a sham procedure. The …

This study follows 255 patients of any age (weighing over 3 kg) who receive a device called the Occlutech PDA Occluder to close a common heart defect called patent ductus arteriosus (PDA). The device is inserted through a blood vessel, avoiding open-heart surgery. Researchers wil…

This phase 3 trial compares a once-weekly growth hormone injection (lonapegsomatropin) to a daily one (somatropin) in 186 prepubertal children with growth failure due to Turner syndrome, SHOX deficiency, being small for gestational age, or idiopathic short stature. The goal is to…

This study tests an injected drug called KPL-387 in 165 people with recurrent pericarditis, a condition where the sac around the heart becomes inflamed again and again. The goal is to see if KPL-387 can reduce flare-ups and pain better than a placebo. Participants must have sympt…

This trial is testing a new heart valve called SAPIEN X4/X4S in over 1,200 people with severe aortic stenosis, a condition where the heart's aortic valve narrows. The valve is inserted through a catheter, avoiding open-heart surgery. Researchers are measuring how many patients di…

This study tests a small device called C-MIC that is implanted without open-heart surgery to help people with heart failure. It includes 22 adults with weak heart pumping (ejection fraction between 25% and 50%) despite standard medications. The device delivers microcurrents to th…

This study tests a new drug called KPL-387 in 80 people with well-controlled recurrent pericarditis (inflammation around the heart). The goal is to see if patients can safely switch from their current treatments to KPL-387 alone and still prevent flare-ups. The trial will measure…

This study tests a drug called CSL300 in people with end-stage kidney disease who are on dialysis and have signs of inflammation. The goal is to see if it can reduce the risk of heart attacks or heart-related death. About 3110 adults will take part, and half will get the drug whi…

This study will screen 1,500 people with early signs of heart disease (plaque in arteries) to see if two common drugs—rosuvastatin and colchicine—can reduce or stabilize that plaque over two years. Participants will take pills daily and get heart-healthy lifestyle advice. The goa…

This study tracks people who experienced a suspected cardiac arrest and had a HeartStart HS1 defibrillator applied. The goal is to see how accurately the device detects shockable heart rhythms and delivers the right amount of energy, especially in children. By collecting data fro…

This trial tests whether a gentle electrical stimulation applied to the ear—a technique called low-level transcutaneous vagus nerve stimulation—can help older adults with systolic heart failure. The study will compare daily one-hour sessions of real stimulation versus a sham (ina…

This study tests a new device called the RevCore Thrombectomy Catheter to treat blocked stents in the leg veins. About 100 adults with stents that have been in place for at least 6 weeks will be enrolled. The device is inserted into the vein to remove the blockage and restore blo…

This study tests a new drug called ARO-DM1 in 78 adults aged 18-65 with type 1 myotonic dystrophy, a genetic muscle disorder. The goal is to check safety and how the body processes the drug. Participants receive either ARO-DM1 or a placebo by IV or injection. It is an early-stage…

This phase 3 trial studies whether patients with acute decompensated heart failure who are already taking an SGLT2 inhibitor like empagliflozin should continue it during hospitalization. About 536 participants will either keep taking empagliflozin or switch to a placebo while in …

This trial tests whether adding a low-dose blood thinner (rivaroxaban) to standard antiplatelet therapy for the first three months after a heart stent procedure can reduce the risk of future heart attacks, strokes, and other cardiovascular events in high-risk patients. Participan…

This study tests two blood-thinning strategies in people with severe aortic regurgitation who have had a new heart valve placed without open surgery. Participants receive either daily aspirin for a year or warfarin for six months followed by aspirin. The goal is to see which appr…

This study tests a special heart valve that can be adjusted to fit children as they grow. It involves 36 kids aged 1.5 to 16 years with congenital heart disease who need a new pulmonary valve. The valve is placed during surgery and can later be expanded without another operation.

This trial investigates whether a new dual energy catheter system can safely and effectively treat ventricular arrhythmias—abnormal heart rhythms that can be life-threatening. The system uses both radiofrequency and pulsed field energy to ablate the heart tissue causing the probl…

This study tests a small sensor implanted in a large vein near the heart to help doctors monitor fluid buildup in people with heart failure. The sensor sends daily readings so treatment can be adjusted early. The trial will compare standard care plus sensor guidance to standard c…

This study tests whether bromocriptine, a drug that stops breastfeeding, can improve heart function in women newly diagnosed with peripartum cardiomyopathy (a type of heart failure after childbirth). 200 women will receive either bromocriptine or a placebo, plus standard heart fa…

This study tests whether taking semaglutide (Wegovy) for at least three months before a first-time atrial fibrillation ablation can improve heart rhythm outcomes. 200 overweight or obese adults scheduled for ablation will be randomly assigned to either standard care or semaglutid…

This trial tests whether fexofenadine, a common allergy medication, can help the heart heal better after a severe type of heart attack called STEMI. Participants will receive either fexofenadine or a placebo for six months, alongside standard care, after undergoing a procedure to…

This trial compares two blood thinners, edoxaban and apixaban, in people who have both atrial fibrillation (an irregular heartbeat) and coronary artery disease (narrowed heart arteries). Both drugs help prevent blood clots, but they are taken differently and may have different ri…

This early-stage trial tests a single dose of SGT-501, a gene therapy given by IV, in 18 people with a rare inherited heart condition called CPVT that can cause dangerous fast heartbeats during exercise or stress. The main goal is to check safety and find the right dose in adults…

This study looks at how a special balloon called the OPN balloon is used to open severely hardened or blocked heart arteries. Researchers will track 300 adults who need this procedure to see how well it works and what problems might happen. The goal is to learn the best ways to u…

This study compares two medicated stents (tiny mesh tubes) used to open blocked heart arteries in people having a heart attack or unstable angina. About 2,100 participants will receive either a sirolimus-eluting stent (ihtDEStiny) or an everolimus-eluting stent (Xience). Research…

This study tests whether the drug vericiguat can help children with heart failure caused by a weak left heart chamber. About 342 children aged 1 month to 18 years will receive either vericiguat or a placebo for 16 weeks. The main goal is to see if the drug lowers a key heart stre…

This study tests whether starting inclisiran early after a heart attack can lower bad cholesterol and reduce the risk of another heart attack or stroke. About 300 adults in Russia who had a recent heart attack and have high cholesterol will receive inclisiran injections. Research…

This trial tests a new device called the MRace implant, designed to reduce severe mitral regurgitation—a condition where the heart's mitral valve leaks blood backward. The implant is placed via a catheter through a vein in the leg, avoiding open-heart surgery. The study will enro…

This study tests a compact heart-lung machine called Cardiohelp in 50 children with severe heart failure. The device supports the heart for up to 30 days while kids recover or await a transplant. The trial also compares two blood thinners to see which causes fewer bleeding or clo…

This study tests whether starting the drug finerenone early during a hospital stay for acute heart failure can improve outcomes. About 550 adults with heart failure and preserved ejection fraction will receive either finerenone or a placebo. Researchers will track deaths, worseni…

This study tests whether using a CT scan to guide heart stent placement is better than the current standard (IVUS ultrasound) for people with hardened, calcified coronary arteries. About 700 adults with evidence of reduced blood flow to the heart will be randomly assigned to one …

This trial tests whether an adapted CPR bundle can increase the chance of restarting the heart in adults who suffer cardiac arrest outside a hospital. Participants are randomly assigned to receive either standard advanced life support or a modified approach that includes mechanic…

This early study tests a new device called the SATURN TS TMVR System, which is implanted through a catheter to replace the mitral valve in people with severe mitral regurgitation. Up to 15 patients who are too high-risk for open-heart surgery will be enrolled. The goal is to see …

This pilot study tests whether a left-sided stellate ganglion block using bupivacaine can lower the rate of atrial fibrillation after esophagectomy, pneumonectomy, or lobectomy. 48 adults aged 18-85 undergoing these surgeries will receive either the nerve block or a saline placeb…

This trial tests whether a 3-month program of virtual visits and remote monitoring can improve recovery in adults recently hospitalized for heart failure. Participants receive either virtual heart failure care or routine care, and researchers track medication optimization, health…

This study tests a drug called lepodisiran in 252 adults with high levels of Lp(a), a protein linked to heart disease. Participants must have heart disease or be at risk for a first heart event. The drug is given as an injection and compared to a placebo to see if it reduces plaq…

This study investigates whether aggressive lipid-lowering therapy can reduce plaque buildup in the heart arteries of melanoma patients starting immune checkpoint inhibitors (ICIs). Participants with plaque detected on a heart CT scan are randomly assigned to either usual care or …

This study is testing whether fexofenadine, a common allergy medication, can reduce the risk of serious heart and brain events in people who have recently had a heart attack. About 2,800 participants will receive either fexofenadine or a placebo for 24 months. The goal is to see …

This study compares catheter ablation (a procedure to fix irregular heartbeats) with standard medical care in 646 adults who have both atrial fibrillation and a recent brain bleed. The goal is to see if ablation reduces the risk of death, stroke, or blood clots. Participants must…

This trial asks whether cooling the body to 33-34°C after a cardiac arrest treated with ECMO improves survival and brain function compared to keeping a normal temperature. It includes adults aged 18-75 who had an out-of-hospital cardiac arrest with certain heart rhythms. Particip…

This trial tests whether using a supraglottic airway (a mask-like device) instead of a breathing tube during heart surgery can reduce lung complications and speed recovery. Adults having elective heart valve surgery or bypass will be randomly assigned to either the nonintubated a…

This trial tests a new model of care called PEN-Plus, which brings specialized treatment for severe chronic diseases like diabetes, heart conditions, and sickle cell disease to first-level hospitals in Zambia. The goal is to train local health workers and set up clinics to manage…

This early-stage trial tests a single dose of a gene therapy called NVC-001 in 21 adults with a genetic form of dilated cardiomyopathy (LMNA mutation). The therapy uses a harmless virus to deliver a modified gene into heart cells, aiming to protect the heart muscle. The main goal…

This study tests a daily pill called orforglipron to see if it can prevent major heart problems (like heart attacks or strokes) and slow kidney disease in people who already have heart or kidney disease. About 7,140 adults will take either the drug or a placebo for up to 5 years.…

This clinical trial is testing an experimental drug called CRD-4730 in people with heart failure with reduced ejection fraction (HFrEF), a condition where the heart's main pumping chamber is weak. The drug works by blocking a protein called CaMKII, which is thought to contribute …

This study tests whether closing a small pouch in the heart (the left atrial appendage) with a device is safer and as effective as long-term blood thinners for people with atrial fibrillation who have already had a brain bleed. About 530 participants will be randomly assigned to …

This Phase 3 study tests whether adding vicadrostat to the standard drug empagliflozin helps adults with chronic heart failure and a weak heart pump (ejection fraction below 40%). About 4200 participants will take either vicadrostat or a placebo, plus empagliflozin, once daily fo…

This study tests whether adding vicadrostat to the standard medicine empagliflozin helps people with heart failure who have a preserved ejection fraction (heart pumps normally but is stiff). About 6000 adults with symptoms will take either vicadrostat plus empagliflozin or a plac…

This study tests a small implanted device that sends gentle electrical signals to strengthen heart contractions in people with heart failure whose hearts still pump fairly well (ejection fraction 40-70%). Researchers will compare the device to a sham (inactive) implant in 1,500 p…

This study tests a new type of stent (a small mesh tube) for people with heart disease who also take blood thinners. These patients have a high risk of bleeding when they also need anti-clotting drugs after stent placement. The new stent is designed to allow a shorter course of a…

This Phase 3 study tests whether the drug mavorixafor can reduce serious infections and increase neutrophil levels in people with chronic neutropenia—a condition where the body doesn't make enough infection-fighting white blood cells. About 176 participants will receive either ma…

This study tests a new device called FARAFLEX that uses electrical pulses to treat atrial fibrillation (AF), a condition where the heart beats irregularly. About 571 adults with AF that hasn't improved with medication will get this procedure. The goal is to see if it safely resto…

This study tests whether moving cardiac arrest survivors to a specialized hospital improves their recovery. About 1,600 adults who were revived after an out-of-hospital cardiac arrest will be randomly assigned to either stay at the nearest hospital or be transferred to a specialt…

This study tests a new device to replace the mitral valve in people with severe mitral regurgitation (a leaky heart valve) who cannot have standard surgery or a less invasive repair. About 1,056 participants will receive the device and be followed for safety and quality of life. …

This study looks at two ways to treat blocked large heart arteries (≥3.5 mm) in people with coronary artery disease. One method uses a drug-coated balloon, the other a drug-releasing stent. The goal is to see which helps the artery relax and function better 8 months after treatme…

This study is testing whether it is safe and effective to perform two heart procedures at the same time in people with atrial fibrillation (AF). The first procedure uses pulsed field ablation to correct the heart's rhythm, and the second closes off a small pouch in the heart to r…

This study tests whether sending doctors a reminder about IV iron guidelines helps heart failure patients with iron deficiency get the recommended treatment. About 3,000 hospitalized adults with heart failure and low iron will be included. Doctors in the intervention group receiv…

This study tests if delivering oxygen directly into the gut through a thin tube can help people with ischemic-hypoxic bowel disease, a condition where the bowel doesn't get enough oxygen. About 90 adults with symptoms like belly pain, bloating, and trouble pooping will receive ei…

This study will track 100 people with severe aortic stenosis who receive the Hydra THV heart valve through a less invasive procedure (TAVR). The goal is to see how well the valve works and how safe it is in everyday practice. Participants will be followed for short- and mid-term …

This study tests a new catheter called VARIPULSE against an already approved one, FARAWAVE, for people with persistent atrial fibrillation (a long-lasting irregular heartbeat). About 466 participants will receive one of the two treatments to see which is safer and better at resto…

This study tests a new medicine called CDR132L in 200 people with a type of heart failure where the heart is stiff and thickened. The goal is to see if it can improve heart structure and function. Participants will receive either the study drug or a placebo by chance, and the stu…

This study tests two experimental drugs, REGN7508 and REGN9933, in about 1,200 people with atrial fibrillation (an irregular heartbeat). The goal is to see if these drugs can prevent blood clots and strokes with less bleeding compared to the standard blood thinner apixaban. Parti…

This study looks at the best time to start blood thinners in people with atrial fibrillation who had a stroke and emergency treatment to open a blocked artery. About 438 participants will be randomly assigned to start blood thinners within 4 days or between 5-14 days after the st…

This study compares a newer pacing method (Left Bundle Branch Area Pacing) with the standard cardiac resynchronization therapy for people with heart failure. About 850 adults with moderate to severe heart failure will take part. The goal is to see if the newer method reduces deat…

This study tests two ways to treat hardened calcium deposits in heart arteries. After using sound waves to break up the calcium, doctors will either place a drug-coated balloon or a drug-coated stent. The trial will follow 128 patients for 9 months to see which approach keeps art…

This study tests a drug called YN001 in 456 adults with coronary atherosclerosis (plaque buildup in heart arteries). Participants receive weekly injections of YN001 or a placebo for 13 weeks. The main goal is to see if YN001 reduces plaque volume in the arteries, as measured by a…

This study tests a device called Aortix, a small pump placed in the main artery, to help remove excess fluid in people hospitalized with acute heart failure who are not responding well to diuretic medications. About 320 participants will be randomly assigned to receive either the…

This study tests an experimental daily pill, danicamtiv, in 332 people with genetic or familial dilated cardiomyopathy (a weakened, enlarged heart). Participants take the drug or a placebo for about 6 months to see if it improves heart function and exercise ability. The goal is t…

This study follows 30 people with Alagille syndrome who are taking odevixibat (Bylvay) in their daily lives. The goal is to see if the drug helps them avoid serious surgeries like liver transplant or bile duct repair over the long term. Researchers will also track weight, height,…

This study tests a new device that uses sound waves to break up calcium deposits in heart arteries before placing a stent. About 408 adults with coronary artery disease will receive this treatment. The goal is to see if the device is safe and effective at clearing blockages to im…

This early study tests a new balloon device that uses pulsed electric fields to treat atrial fibrillation, a common heart rhythm disorder. 75 people with short-duration AF who haven't had prior ablation will receive the procedure and be followed for one year. The goal is to see i…

This study is checking how safe and well a device called TriClip works for people with a leaky heart valve (tricuspid regurgitation). The device is already approved for use, and this study will watch 1000 adults who get it to see how they do. The goal is to make sure the device w…

This trial tests whether an eight-week digital cardiac rehabilitation program using the Peloton app can improve physical activity and recovery in people who have had a transcatheter aortic valve replacement (TAVR). Participants are randomly assigned to either the digital rehab pr…

This study tests whether a pacemaker programmed to each person's needs can improve symptoms and outcomes for people with a common type of heart failure (HFpEF). About 700 adults with heart failure but normal pumping strength will receive either personalized pacing or minimal/no p…

This trial tests whether combining a minimally invasive heart valve repair (TEER) with an electrical shock to restore normal heart rhythm (cardioversion) can improve outcomes for people with severe mitral regurgitation and atrial fibrillation. Participants who have already had a …

This study tests whether combining two drugs, teclistamab and daratumumab, can help people newly diagnosed with both multiple myeloma and light chain amyloidosis. About 30 adults will receive the treatment for up to 24 cycles. The goal is to see if the combo improves survival wit…

This trial is testing a new coronary extension catheter designed to help doctors deliver balloons and stents more easily during percutaneous coronary intervention (PCI) for coronary artery disease. The study will enroll about 69 adults who need PCI and for whom the catheter is pl…

This study will follow 30 people with Alagille syndrome who are taking odevixibat in their daily lives. The goal is to see how safe the drug is over the long term by tracking any side effects. It is not testing if the drug works, but rather monitoring its real-world safety.

This study tests whether giving thiamine (vitamin B1) during coronary artery bypass surgery can reduce the memory and thinking problems that sometimes follow the procedure. Older adults with coronary heart disease who are scheduled for bypass surgery and have low thiamine levels …

This early-stage trial tests a single IV dose of VERVE-102, a gene-editing drug designed to permanently lower LDL (bad) cholesterol by turning off a specific gene in the liver. It involves 85 adults with inherited high cholesterol or early heart disease who still need lower chole…

This study tests a new heart pump (CorWave LVAS) in 20 people with advanced heart failure. The pump helps the heart pump blood when it is too weak. The goal is to see if the device is safe and works well, with a focus on survival and avoiding serious problems like bleeding, infec…

This trial is testing a new device called the AltaValve System, which is placed inside the heart to replace a leaky mitral valve. The study includes adults with moderate-to-severe mitral regurgitation who are not suitable for surgery or a less invasive repair procedure. The goal …

This trial asks whether people with permanent atrial fibrillation (AF) can continue drinking caffeinated coffee without worsening their heart rate control. Half of the participants will keep their usual coffee habit, while the other half will switch to decaf for a month, then swa…

This trial tests whether a smartphone app called HeartCheck can help people who have recently survived a heart attack better manage their blood pressure, cholesterol, blood sugar, and smoking habits. The app provides education, reminders, and easy-to-understand goals to support m…

This trial is testing whether sacubitril/valsartan, a newer heart failure medication, can improve heart function and reduce harmful heart remodeling better than the older drug ramipril. The study enrolls adults with ischemic heart failure (caused by reduced blood flow to the hear…

This registry tracks 5,000 people with coronary artery disease who receive one of three drug-eluting stents during angioplasty: Biolimus, Everolimus, or Zotarolimus. Researchers will compare rates of heart-related death, heart attack, and repeat procedures over two years. The goa…

This study tests the drug acoramidis in people with transthyretin amyloid cardiomyopathy (ATTR-CM), a condition where abnormal proteins build up in the heart, weakening it. Over 36 months, researchers measure whether acoramidis improves heart function and structure using cardiac …

After a cardiac arrest, some patients develop seizures that do not respond to standard treatment. This trial tests whether putting the brain into a deeper state of electrical silence — called burst suppression — can stop those seizures better than the usual approach of only suppr…

This trial compares two single antiplatelet therapies—ticagrelor versus aspirin—in people who have just undergone transcatheter aortic valve implantation (TAVI) for severe aortic stenosis. The goal is to see which drug better prevents serious complications like stroke, heart atta…

This trial compares two ways to guide ablation for ventricular tachycardia, a dangerous fast heart rhythm. One method uses standard voltage mapping to burn away all low-voltage scar tissue. The other uses a newer technique called ILAM that targets specific zones where the electri…

This trial investigates whether isolating the superior vena cava, in addition to the standard pulmonary vein isolation, improves success rates for treating atrial fibrillation. Using a newer, safer energy source called pulsed field ablation, the study compares the two procedures …

This phase III trial tests whether vicagrel, an experimental antiplatelet drug, can prevent major heart-related events better than the standard drug clopidogrel in people with acute coronary syndrome (such as a heart attack or unstable angina) who are undergoing a stent procedure…

This trial tests whether a new high-power short-duration radiofrequency ablation technique (90 watts for 4 seconds) is safer and more effective than the standard low-power approach (35 watts for 10-15 seconds) for treating atrial fibrillation. The study includes adults with parox…

This trial investigates whether cardiac ablation — a procedure that destroys tiny areas of heart tissue causing irregular rhythms — can improve exercise capacity in endurance athletes with atrial fibrillation. One hundred athletes who train at least four hours per week will have …

This trial compares two catheter ablation strategies for people with persistent atrial fibrillation (AF). One group receives standard pulmonary vein isolation using pulsed-field ablation; the other receives radiofrequency ablation followed by additional map-guided targeting of ab…

This trial tests whether a structured physiotherapy program started at least two days before coronary artery bypass grafting (CABG) and continued after surgery can improve recovery in high-risk patients. Participants are adults scheduled for elective CABG who meet at least three …

This trial investigates whether implanting the kidney in a separate, delayed surgery after the heart transplant—rather than both at once—can improve outcomes for patients needing a combined heart and kidney transplant. The kidney is kept healthy using a machine that pumps cold, o…

This trial tests a new minimally invasive procedure called TRANSOM for people with a leaky mitral valve, a condition where the valve doesn't close properly. Instead of opening the chest, surgeons make a small incision between the ribs and insert a tube directly into the beating h…

This trial tests a new device, the Laplace Transcatheter Tricuspid Valve Replacement (TTVR) System, designed to replace the tricuspid valve in people with severe, symptomatic tricuspid regurgitation. The procedure is done through a catheter, avoiding open-heart surgery. The study…

This study compares a low-carbohydrate ketogenic diet to a low-fat mixed diet in people with heart failure with preserved ejection fraction who also have diabetes, prediabetes, metabolic syndrome, or obesity. The goal is to see whether the ketogenic diet can improve exercise tole…

This phase 3 trial investigates whether starting a combination of finerenone and empagliflozin early during a hospital stay for heart failure can improve outcomes compared to usual care. About 1,500 adults hospitalized with heart failure will be enrolled. The study measures effec…

This study tests whether a filter device called the Sentinel Cerebral Protection System can prevent stroke and brain injury during ablation for atrial fibrillation (an irregular heartbeat). The device is placed in the arteries to catch debris that might break loose during the pro…

This trial tests whether using two defibrillators in rapid succession, rather than one, can improve survival in people whose hearts stop outside a hospital. The procedure, called double sequential external defibrillation (DSED), is normally tried only after several failed attempt…

This study tests whether etripamil nasal spray can safely and quickly stop episodes of paroxysmal supraventricular tachycardia (PSVT) in children aged 6 to 17. PSVT causes sudden rapid heartbeats that can be frightening and require medical attention. The spray is designed to be u…

This trial tests whether ivabradine, a drug that lowers heart rate, can help people recover from cardiogenic shock—a life-threatening condition where the heart can't pump enough blood—after a heart attack. Participants receive either ivabradine or a placebo for three days, and do…

This study tests whether combining aerobic exercise with strength training helps people recover better after coronary artery bypass graft (CABG) surgery. Participants, aged 30 to 60 and cleared for phase II cardiac rehab, are randomly assigned to aerobic exercise alone or aerobic…

This study tests a smartphone program called Smart Walk, designed specifically for African American women who are not very active. The program includes an app, virtual coaching, and text messages to encourage more physical activity. Researchers want to see if it helps women exerc…

This study tests a new version of the clot-dissolving drug tenecteplase, coated with platelet membranes, to see if it targets blood clots more effectively. Researchers will apply the coated drug to blood clots made from samples taken from people with coronary artery disease and h…

This study tests whether lumacaftor, a drug used for cystic fibrosis, can improve blood flow to the brain and thinking abilities in people with stable heart failure and reduced pumping function. About 60 participants will receive either lumacaftor or a placebo for one month. The …

This trial tests whether an experienced doctor's eye, guided by standard X-ray images, can place a heart stent as well as using a special ultrasound probe inside the artery. The study focuses on the left main coronary artery, a critical vessel. All patients receive the same type …

This trial tests whether the position of the electrodes on the chest — front-to-back versus front-to-side — and applying manual pressure to the electrodes improve the success of electrical cardioversion for atrial fibrillation. About 1750 adults scheduled for non-urgent cardiover…

This trial tests a temporary heart pump called the CorVad system in people with severe right heart failure that does not improve with standard medications. The pump is placed through a blood vessel to help the right ventricle pump blood, giving the heart a chance to recover or br…

This study tests whether a personalized, high-rate fluid removal strategy guided by ultrasound is as safe and effective as the standard rate for patients with advanced kidney disease hospitalized due to severe fluid overload. Participants are randomly assigned to receive either a…

This early study tests a new device called the Capstan System, which replaces the mitral valve without open-heart surgery. It is for people with severe mitral regurgitation (a leaky heart valve) who are too sick for traditional surgery. The trial will check if the device can be s…

This study tests whether an electronic alert in a patient's medical record can prompt doctors to prescribe guideline-recommended heart failure medications that are not yet being used. The trial includes 5,000 adults with heart failure and a reduced ejection fraction (≤40%) seen a…

This trial tests a new device called the P3 Occluder System designed to close a patent foramen ovale (PFO) — a small opening between the upper chambers of the heart. The study includes adults aged 18 to 65 who have had a stroke possibly linked to a PFO. Participants receive the i…

This study tests two simple tools to improve medication use in people with heart failure with reduced ejection fraction (HFrEF). One tool is a short animated video and checklist sent to patients before a clinic visit to encourage them to discuss their medications. The other is an…

This study is testing the safety and performance of the Navitor TAVI system, a device used to replace a narrowed heart valve (aortic stenosis) without open-heart surgery. About 1,000 participants who are eligible for the procedure will receive the Navitor valve and be followed fo…

This phase 3 trial tests whether finerenone, a non-steroidal mineralocorticoid receptor antagonist, can reduce cardiovascular death and heart failure events in patients with heart failure and reduced ejection fraction who cannot tolerate or are not eligible for standard steroidal…

This trial tests whether using a suction catheter to remove large blood clots before placing a stent improves outcomes in people having a severe heart attack (STEMI). Participants must have a large clot visible on angiography. Half receive standard stent placement alone, and half…

This registry tracks 20,000 people with atrial fibrillation or ventricular arrhythmias who undergo catheter ablation using advanced CARTO mapping technologies. The goal is to see how safe and effective these procedures are in everyday medical practice. Researchers will monitor he…

This trial investigates whether empagliflozin, a drug originally used for diabetes, can help children with heart failure. About 60 children aged 1 month to 18 years with confirmed heart failure will receive either standard care plus empagliflozin or standard care alone for 90 day…

This study tests whether adding resilience training—a mix of group therapy and relaxation exercises—to standard rehabilitation helps people recover from Takotsubo cardiomyopathy (broken heart syndrome) or a recent heart attack. Participants attend two group therapy sessions and t…

This study tests a special pacemaker setting called SyncAV, used with left bundle branch area pacing, in people with heart failure and a heart block. The goal is to see if this setting can improve the heart's electrical timing and pumping strength. About 50 adults who already nee…

This trial tests a 12-week neurocardiac rehabilitation program for children, adolescents, and young adults with moderate to complex congenital heart disease. The program combines home-based physical exercise, telehealth psychoeducation for parents and children, and computerized c…

This study compares two implantable heart devices—Cardiac Contractility Modulation (CCM) and Cardiac Resynchronization Therapy (CRT)—in people with Chagas heart disease and advanced heart failure. The goal is to see which device better improves quality of life and heart function.…

This trial tests a new device called the TruGamma system, which replaces the tricuspid valve without open surgery. It is for people aged 65 and older with severe tricuspid regurgitation who are not candidates for surgery. The study compares the device plus standard medication to …

This phase 3 trial tests whether Qishen Yiqi Dripping Pills, a traditional Chinese herbal medicine, can improve exercise ability and quality of life in people with chronic heart failure caused by coronary heart disease. The study enrolls adults aged 18 to 80 with reduced heart pu…

This trial compares two different dual blood pressure medications in people aged 50–70 with high blood pressure and heart disease who have just received a heart stent. Participants are randomly assigned to one of two drug combinations: losartan plus hydrochlorothiazide or amlodip…

This trial tests whether a structured physical rehabilitation and exercise program can help older adults (age 60+) who have been hospitalized for heart failure with preserved ejection fraction (HFpEF). Participants will receive a progressive, multi-domain rehab intervention after…

This trial compares two blood thinners—rivaroxaban (Xarelto) and warfarin—in children over 2 years old who have giant coronary artery aneurysms caused by Kawasaki disease. The goal is to see if rivaroxaban is safer and as effective as warfarin at preventing blood clots, major ble…

This trial tests whether opening a chronically blocked heart artery with a stent (PCI) reduces heart muscle starvation more than medication alone. It includes 48 patients with a total blockage who have significant ischemia on imaging. The study measures changes in ischemia, chest…

This study tests whether using a computer simulation (virtual stenting) before placing stents in heart arteries can lead to better outcomes than the usual method guided by X-ray images alone. About 1,472 adults with coronary artery disease will be randomly assigned to either the …

This study looks at people who have had a severe type of heart attack called STEMI. It compares a shorter course (about one month) of two blood thinners followed by just one drug (prasugrel) for a year, versus the standard one-year regimen of two blood thinners. The goal is to se…

This study looks at whether a hybrid care pathway that includes home telemonitoring helps people with heart failure spend more days at home and out of the hospital. Participants measure their weight, blood pressure, heart rate, and symptoms daily, sending the data to a medical ce…

This study looks at how well different drug-eluting stents work in real-world patients with coronary artery disease. Researchers are comparing newer stents to older ones to see which are safest and most effective. The study includes up to 50,000 people who need a stent to open bl…

This trial compares two treatments for white spot lesions—early cavities that appear as milky-white marks on front teeth after braces. One treatment uses a special paste (MI Paste Plus) combined with etching, while the other uses a resin infiltration technique (Icon). The study i…

This study tests whether injecting a person's own bone marrow stem cells into or near the eye can help treat various retinal and optic nerve diseases, including age-related macular degeneration, retinitis pigmentosa, and glaucoma. Participants receive stem cell injections via dif…

This study tests whether a small wireless sensor placed in the pulmonary artery can help doctors better manage medications for people with heart failure and a leaky mitral valve. The sensor constantly measures pressure inside the heart, giving doctors real-time data to adjust tre…

This trial investigates whether sulforaphane, a nutrient found in broccoli, can reduce heart damage caused by the chemotherapy drug doxorubicin in breast cancer patients. About 70 participants will receive either sulforaphane or a placebo alongside their chemotherapy. The study m…

This phase 2 trial tests whether dapagliflozin, a diabetes drug, is safe and can lower high urine protein levels in people with renal AL amyloidosis—a rare condition where abnormal proteins damage the kidneys. About 20 participants will take the drug daily for 6 months and be mon…

This study is testing a new type of biological heart valve that features an 'easy change' system, designed to make future replacements simpler. Researchers will implant these valves in 500 people with aortic valve disease and track complications like blood clots, infections, and …

This study is tracking 2,000 people with coronary artery disease who receive Ultimaster stents during routine care. Researchers want to see how often serious heart problems like death, heart attack, or the need for another procedure happen within a year. The goal is to understand…

This study tests two ways to treat a slow heart rate caused by overactive nerves, without using a permanent pacemaker. One method uses freezing (cryoablation) and the other uses burning (radiofrequency) to calm the nerves. Sixty adults aged 18 to 60 with symptoms like fainting or…

This trial investigates whether people with heart failure and a traditional right ventricular pacemaker feel better and have stronger hearts after switching to a more natural pacing method, such as His bundle or biventricular pacing. Participants will have their pacemaker upgrade…

This study compares a standard leg exercise program alone versus the same program combined with neuromuscular electrical stimulation (NMES) in heart failure patients who have a temporary heart pump (intra-aortic balloon pump) in their leg. The goal is to see if adding NMES helps …

This study is testing a new heart stent called Coroflex ISAR NEO in 1,000 people with narrowed heart arteries. The goal is to see how safe and effective it is compared to other stents in everyday medical practice. Researchers will track major heart problems like death, heart atta…

This study tests whether adding an implantable cardioverter defibrillator (ICD) to standard medication helps people with variant angina who have survived a sudden cardiac arrest. About 140 adults will be randomly assigned to get either an ICD plus medication or medication alone. …

This study tests whether using artificial intelligence (AI) to analyze ultrasound images during heart stent placement can reduce future heart problems. About 3,000 adults with coronary artery disease will receive a stent guided by AI-enhanced intravascular ultrasound. Researchers…

This study compares weight loss using semaglutide (a drug) versus a calorie-restricted diet in 100 people with obesity and heart failure with reduced ejection fraction. The goal is to see which approach better improves peak oxygen uptake, a measure of exercise capacity, after 52 …

This study tests whether quickly upgrading from a standard heart pump (Impella CP) to a more powerful one (Impella 5.5) within 24 hours after a heart attack improves outcomes for people in cardiogenic shock. The trial will enroll 115 adults aged 18-77 who have had a heart attack …

This study tests whether a home-based cardiac rehab program delivered through a mobile app can reduce plaque buildup in the heart arteries of people with mild to moderate blockages. 176 participants will either get the app-based program (with exercise plans, diet advice, and ment…

This study tests an oral antiviral called ziresovir (AK0529) in adults at high risk for severe RSV infection, such as those with chronic lung or heart disease, weakened immune systems, or age 65 and older. Participants receive either the drug or a placebo, and researchers measure…

This trial compares two blood products—prothrombin complex concentrate (PCC) and fresh frozen plasma (FFP)—for controlling bleeding in people undergoing heart valve surgery. Doctors use a special test to guide which product to give and measure how quickly bleeding stops. The goal…

This trial tests whether a special alert system called ICU Beacon can help doctors in intensive care units detect early signs of organ failure. The study includes about 1,962 adult ICU patients and compares units using the software plus standard care to those using standard care …

This trial tests a new way to treat typical atrial flutter, a heart rhythm problem. Instead of the standard linear ablation, doctors use a special catheter with tiny sensors to map and target only the high-voltage areas causing the flutter. The goal is to see if this approach is …

This study follows 140 patients in Indonesia who received the HeartR PDA Occluder, a device that closes a common heart defect called Patent Ductus Arteriosus (PDA). The goal is to see if the device works well and is safe over 12 to 24 months. Patients must be at least 6 months ol…

This study looks at people with heart devices that detect short bursts of irregular heartbeats (atrial high-rate episodes lasting 6 minutes to 24 hours) but no diagnosed atrial fibrillation. It tests whether starting rhythm-control drugs early, along with managing heart risk fact…

This study is testing a small, leadless pacemaker placed in the heart's upper chamber (atrium) for people with sinus node dysfunction, a condition where the heart's natural pacemaker doesn't work properly. Participants receive the Aveir AR pacemaker and a loop recorder to track h…

This study looks at whether people with atrial fibrillation (AF) can safely stop taking blood thinners after a successful catheter ablation procedure. About 3,160 adults who have been free of AF for 6 to 12 months after ablation will be randomly assigned to either continue or sto…

This study looks at people over 65 who recently had a stroke with no clear cause. Doctors suspect they may have hidden atrial fibrillation (an irregular heartbeat) not caught in the hospital. The trial compares two treatments: a blood thinner (apixaban) or aspirin, to see which b…

This study tests whether an ultra-high-resolution CT scan, called photon-counting CT angiography, can accurately detect narrowing inside brain stents. The trial involves 200 adults who have had a stent placed in a brain artery and are due for a follow-up check. The new CT scan's …

This study tests a new device that uses a sensor placed on the chest to measure kidney function in 15 adults with heart failure. Participants receive an injection of a fluorescent dye (Relmapirazin) and a standard contrast agent (iohexol), then the sensor tracks how quickly the d…

This study is testing new, lower-radiation CT scan methods for taking pictures of the heart and blood vessels. Researchers want to see if these scans are accurate at finding blocked arteries and predicting future heart problems like heart attacks. About 5,000 adults who need a he…

This study is testing whether a new type of CT scan, called photon-counting CT, can do it all in one go for people who have had a coronary stent placed. The scan aims to check the stent and arteries, measure blood flow to the heart muscle, and assess heart function in a single ex…

This study is testing a chest-patch that uses light to measure blood pressure without a traditional arm cuff. Researchers will compare its readings over 24 hours to the standard cuff-based method in 600 adults with or without high blood pressure. The goal is to see if the patch i…

This trial is developing an AI-powered device that listens to children's heart, breath, and bowel sounds to identify signs of common diseases like congenital heart disease, bronchopneumonia, and abdominal issues. It will involve 30,000 children aged 0-18, some with these conditio…

This study explores whether performing a cardiac MRI (CMR) before the standard invasive coronary angiography (ICA) can accurately diagnose the cause of a suspected non-ST-elevation heart attack (NSTEMI). Currently, patients with NSTEMI often undergo an invasive angiogram, and if …

This study is testing a new artificial intelligence (AI) tool that analyzes electrocardiograms (ECGs) to find a condition called left ventricular systolic dysfunction (LVSD), a type of heart failure where the heart's main pumping chamber is weak. Researchers will enroll 15,000 ad…

This trial tests whether a machine-learning algorithm can detect atrial fibrillation (AF) early by analyzing pulse wave signals from a wearable sensor. The study involves 200 adults with heart failure, comparing the algorithm's readings against standard ECG results. If it works, …

This study tests whether a radioactive tracer called Florbetaben F18 can reliably detect amyloid deposits in the heart using PET scans. Researchers will scan 15 people with and without cardiac amyloidosis twice to see if the results are consistent. The goal is to improve diagnosi…

This study investigates whether a portable, AI-assisted ultrasound device can accurately measure heart function in patients aged 75 and older hospitalized with heart failure. Geriatricians, after a one-day training, use the AI tool to assess the heart's pumping ability, and resul…

This Phase 1 trial is testing a new radioactive tracer called 99mTc-p5+14 to see how it spreads through the body and how much radiation it delivers. The study includes healthy volunteers and people with AL or ATTR systemic amyloidosis, a condition where abnormal protein deposits …

This study tests whether a lab technique called polyethylene glycol (PEG) precipitation can tell the difference between a true heart attack and a harmless condition called macrotroponin, where troponin molecules clump together and falsely signal heart damage. Researchers will com…

This study evaluates a new multichannel ECG system designed to detect early signs of cardiovascular disease (CVD) in people who may have no symptoms yet. The system uses advanced algorithms to analyze electrical signals from the heart, looking for subtle abnormalities that could …

This trial investigates whether adding a simple blood test (NT-proBNP) and a quick heart ultrasound (POCUS) to standard care helps doctors diagnose heart failure more accurately in people aged 50 and older. Participants are randomly assigned to receive standard care alone or with…

This study aims to create a non-invasive diagnostic algorithm using PET imaging and CT scans to identify microvascular angina in patients who have chest pain and signs of ischemia but no blocked coronary arteries. About 70 participants with symptoms of angina or shortness of brea…

This trial investigates whether an ultrasound of the neck arteries can provide similar information to a CT scan of the heart for diagnosing blocked arteries in people with chest pain. Currently, CT scans are used but involve a small amount of radiation. The study will compare the…

This study investigates whether a blood test measuring clotting and clot-busting markers can predict complications in patients undergoing aortic valve replacement. Researchers will follow 750 adults with aortic stenosis who receive either surgical or catheter-based valve replacem…

This trial evaluates a new device called CardioStory that uses fiber-optic sensors to measure heart filling pressure in about two minutes—without needles or catheters. Researchers are enrolling 850 adults who come to the emergency department with recent shortness of breath. The g…

This study tests whether adding advanced molecular tests (like PCR and DNA sequencing) to standard blood cultures helps doctors identify the cause of infective endocarditis—a serious heart valve infection—more quickly. The goal is to see if this leads to more patients receiving t…

This study investigates whether using a lower dose of iodine contrast dye in CT scans can still produce high-quality images needed to plan a heart valve replacement procedure (TAVR). Normally, 100 ml of contrast is used, but reducing the dose may help avoid kidney injury and save…

This trial tests a wearable bracelet called Stroke Alarm that detects when a stroke causes arm weakness. People aged 50 and older with certain high-risk conditions (like recent mini-stroke, atrial fibrillation, or artery disease) wear the device for 3 months. The goal is to see i…

This study tests whether a magnetocardiography (MCG) device can detect reduced blood flow to the heart muscle in people with acute chest pain but no major artery blockages. About 3,786 participants will undergo MCG scanning, and results will be compared to a standard ultrasound t…

This study is testing whether artificial intelligence (AI) can predict or rule out a heart attack using data from standard blood tests. Researchers will analyze white blood cell properties from over 3,000 adults who come to the hospital with chest pain. The goal is to see if AI c…

This study is testing whether a digital stethoscope, combined with artificial intelligence, can detect two serious conditions: high blood pressure in the lungs (pulmonary hypertension) and a weak heart pump (low ejection fraction). About 3,850 adults will have their heart sounds …

This study tests whether a machine learning algorithm can better detect critical congenital heart disease (CCHD) in newborns by combining standard oxygen saturation measurements with perfusion index data. Researchers will enroll up to 320 infants, including those with suspected o…

This study is testing whether a thin wire that measures blood flow in heart arteries can help doctors decide which blockages truly need a stent. About 107 people with severe-looking blockages will have the wire test before and after stent placement. The goal is to see if some blo…

This study compares two types of CT scans—PET/CT and ultra-high-resolution CT—to see which one better detects early signs of coronary artery disease in people with symptoms like chest pain. Researchers will measure the amount of plaque in the arteries and check how accurately eac…

This phase 3 study tests whether the drug olpasiran can prevent first major heart events (like heart attacks) in 11,000 people aged 50+ who have high levels of lipoprotein(a), a genetic risk factor. Participants receive either olpasiran or a placebo as a shot under the skin. The …

This trial tests whether adding nitric oxide gas to the heart-lung machine during surgery can prevent acute kidney injury in newborns with congenital heart defects. Up to 60% of these babies experience kidney damage after surgery, which can lead to serious complications. The stud…

This trial tests whether a single polypill combining three medications—finerenone, empagliflozin, and losartan—can help prevent heart failure and maintain exercise capacity in people with type 2 diabetes who are at high risk. Participants will take either the polypill or the same…

This phase 3 trial tests whether acoramidis can prevent or delay transthyretin amyloidosis (ATTR) in 587 adults who carry a faulty gene but have no symptoms yet. ATTR causes sticky plaques to build up in the heart and nerves, leading to heart failure and nerve damage. Acoramidis …

After a cardiac arrest, many survivors develop seizures that can worsen brain injury. This trial tests whether giving the drug perampanel soon after resuscitation can prevent those seizures. About 52 adults who are comatose after a cardiac arrest will receive either perampanel or…

Heart failure often goes undiagnosed because its early symptoms—like fatigue and shortness of breath—are mistaken for normal aging. This study tests whether a three-part strategy can change that: raising awareness among patients and doctors, using a blood test (NT-proBNP) to spot…

This trial investigates whether a short course of atorvastatin, a widely used statin, can prevent atrial fibrillation—a rapid, irregular heartbeat—in adults aged 60 and older undergoing lung surgery. Participants are randomly assigned to receive either atorvastatin or a placebo f…

This trial investigates whether a professional dental cleaning and instruction on proper brushing and flossing can reduce the amount of bacteria that enter the bloodstream during tooth brushing. Such bacteria can sometimes lead to infective endocarditis, a serious infection of th…

This trial tests whether making a small opening in the sac around the heart (posterior pericardiotomy) during heart surgery can prevent a common complication called atrial fibrillation. About 650 adults in China having surgery on the heart's valves, coronary arteries, or aorta wi…

This large study tests whether a smartphone app can help prevent strokes by detecting atrial fibrillation (an irregular heartbeat) early. Adults aged 65 and older in Austria are randomly assigned to use the 'Pulskontrolle' app for pulse checks or to receive usual care. If the app…

This early-stage trial is testing a new drug called NNC0537-1482 in 36 adults with heart failure. The main goal is to check if the drug is safe and how the body handles it. Participants will receive either the drug or a placebo by injection, and neither they nor the doctors will …

This study tests whether using shockwave therapy on the leg artery before a TAVR heart valve procedure can reduce bleeding and other complications. It involves 100 adults with severe aortic stenosis and heavily calcified arteries. The goal is to make the procedure safer by prepar…

This study tests whether Acceptance and Commitment Therapy (ACT), delivered through a smartphone app, can help caregivers of children with RASopathies (like Neurofibromatosis type 1 and Noonan syndrome) cope with parenting stress. The trial is fully remote and involves 70 adult c…

This trial tests whether a 24-week personalized program called MICROFIT—combining high-intensity interval training with a personal trainer and Mediterranean-style dietary advice—is feasible for people with microvascular coronary dysfunction, a condition where small heart blood ve…

This study tests a 10-session program called ViCCY for caregivers of heart failure patients who also have mild to moderate memory problems. About 256 caregivers and 60 patients will take part. The goal is to see if the program improves caregivers' mental health and reduces stress…

This study looks at two ways of giving the pain medicine ketorolac to children after heart surgery: as a steady drip or as shots every few hours. The goal is to see if the steady drip reduces the need for stronger opioid pain medicines. About 166 children aged 3 months to 5 years…

This trial tests a device called the Pedal Pump, which moves the feet for 10 minutes to help reduce lower leg swelling (edema) in hospitalized patients. The study includes 60 adults with edema due to conditions like heart failure, kidney disease, or chronic venous insufficiency. …

This study tests whether a special breathing exercise program, called inspiratory muscle training, can improve how well the breathing muscles work during exercise in people with heart failure. Researchers will measure blood flow to breathing and leg muscles, and how long particip…

This study tests whether adding inspiratory muscle training (using a device called PowerBreathe) to standard cardiac rehabilitation can improve how well the heart and muscles work during exercise in people with heart failure. Researchers will measure blood flow and oxygen use in …

This study tests a methadone-based recovery plan to improve pain control and reduce opioid use in children after heart surgery. About 500 children aged 3 to 18 will be randomly assigned to either the new methadone plan or standard care. The goal is to see if the new approach lowe…

This study tests whether combining breathing exercises with mild electrical muscle stimulation can help people hospitalized with worsening heart failure. 135 patients will be split into three groups: one gets both treatments plus standard care, one gets breathing exercises only, …

This study compares two types of nerve blocks (ESPB and SPSIPB) to see which provides better pain relief after coronary artery bypass surgery. About 64 adults aged 45-85 will receive one of the blocks before surgery, and their pain levels, opioid use, and recovery speed will be t…

This trial is testing whether a mild sedation combination of remimazolam and fentanyl can be used instead of general anesthesia during a pulsed-field ablation procedure for atrial fibrillation. The study will enroll 20 adults with paroxysmal or persistent AF and monitor how well …

This trial tests whether sertraline, a widely used antidepressant, can reduce anxiety in children and teens aged 8 to 17 with neurodevelopmental disorders such as autism, ADHD, Fragile X syndrome, and Tourette syndrome. Participants receive either sertraline or a placebo for seve…

This study tests whether a supervised cardiac rehabilitation program is feasible and beneficial for people with cardiac amyloidosis, a condition where abnormal protein builds up in the heart. Participants attend three one-hour exercise sessions per week for 12 weeks. The study me…

This pilot study tests a program called Heartsight, which provides educational modules to caregivers of children who have had a cardiac arrest. The goal is to see if the program is feasible and acceptable, and whether it can reduce caregivers' uncertainty, anxiety, depression, an…

This study tests a new care model called TIER-HF-PC, which matches heart failure patients to one of three levels of palliative support based on their needs. Researchers want to see if this approach improves quality of life for both patients and their caregivers compared to usual …

This study tests whether watching nature videos through virtual reality glasses can lower anxiety and improve vital signs like heart rate and blood pressure in people recovering from a heart attack in the intensive care unit. Half of the 50 participants will use VR glasses for a …

This study tests a wearable suit called AquaPass that removes excess fluid through sweat in people with chronic heart failure and fluid overload. Participants wear the suit for up to 5 hours in a hospital or clinic, alongside their usual medications. The goal is to see if the sui…

This study compares two drug combinations (ketamine with propofol vs. dexmedetomidine with propofol) for sedating children aged 2-12 during a heart catheterization to close simple heart defects. The goal is to see which approach causes fewer breathing problems and provides smooth…

This study tests whether a 12-week resistance training program can improve physical function, quality of life, and heart-related biomarkers in people with heart failure who are on the waiting list for a heart transplant. Participants will be randomly assigned to either the exerci…

This study tests whether a mobile-based telemedicine program—using phone calls and text messages for health education, medication reminders, and lifestyle advice—can improve quality of life in adults with chronic heart failure. About 70 patients in Ethiopia will be split into two…

This study tests whether a personalized exercise program can improve balance and physical function in adults with rare neuromuscular disorders like Charcot-Marie-Tooth disease, facioscapulohumeral muscular dystrophy, and myotonic dystrophy type 1. Participants will receive a 12-d…

This study tests whether joining a virtual support group can help reduce anxiety in people who have had Takotsubo syndrome, also known as 'broken heart syndrome.' Participants meet online every other week for group therapy and education. The goal is to see if this support lowers …

This study follows 3,000 people with stable coronary artery disease and a chronic total occlusion—a heart artery that has been completely blocked for at least three months. Researchers will compare outcomes in those treated with a stent procedure versus medication alone. The goal…

This study is a registry that collects information on the safety and effectiveness of Medtronic medical devices already on the market. It will include up to 100,000 people who have or will receive a Medtronic product for conditions like heart, nerve, or digestive disorders. The g…

This study aims to understand how and why eosinophils (a type of white blood cell) become active in conditions like allergies, asthma, and parasitic infections. Researchers will observe up to 800 people aged 1 to 100 with high eosinophil levels. No experimental treatments are giv…

This study aims to learn more about heart and blood vessel diseases by observing people who have them or are at risk. Researchers will collect samples and perform tests like imaging and stress tests on up to 5,000 participants, including healthy volunteers and relatives of affect…

This study is testing a new type of MRI scanner that uses less energy than standard machines. The goal is to see if it can still take clear pictures of the heart, which could help people with metal devices in their body. Healthy volunteers and people with heart disease will have …

This study looks at whether two proteins released when heart muscle is damaged can be detected in the blood during a heart attack. Researchers want to see if higher levels of these proteins are linked to a greater chance of developing heart failure afterward. The study includes a…

This study looks at how certain white blood cells, called monocytes, react to injury from a heart attack or ischemic stroke. Researchers want to learn how these cells sense danger signals and produce substances that might help heart muscle and brain tissue heal. The study involve…

This study looks at whether two proteins released by a struggling heart can be detected in the blood during acute heart failure. Researchers will measure these proteins in about 500 adults—some with stable or worsening heart failure and some healthy—to see if higher levels relate…

This study will collect blood samples from 115 adults with cardiac sarcoidosis to look for tiny particles called exosomes that might show whether the disease is active or quiet. The goal is to develop a simple blood test that could help doctors monitor the condition without needi…

This study looks at how your genes and your environment—like what you eat, breathe, and experience—work together to influence common diseases such as diabetes, heart disease, and asthma. Researchers are collecting health questionnaires, genetic data, and other information from 25…

This study investigates whether the types and behavior of certain immune cells (neutrophils and monocytes) in the blood are linked to how the heart repairs itself after a heart attack. Researchers will follow 50 adults who have had a severe type of heart attack and are scheduled …

This study looks at whether liver function and blood clotting tests can help doctors better understand and monitor cardiac transthyretin amyloidosis (ATTR-CA), a condition where abnormal protein builds up in the heart. Researchers will compare these tests in people with ATTR-CA a…

This registry is following 1,950 people with atrial fibrillation who are treated with the PulseSelect PFA system, a device that uses electrical pulses to correct irregular heartbeats. Researchers are tracking how well the procedure prevents AFib from coming back and how often ser…

This study aims to learn more about RASopathies, a group of genetic conditions that can cause developmental issues, birth defects, and increased cancer risk. Researchers will follow up to 500 people of any age who have or may have a RASopathy, along with their family members, for…

This study looks back at the medical records of 1,000 people with coronary artery aneurysms—bulges in the heart's blood vessels. Researchers want to understand how these aneurysms change over time, what factors increase the risk of progression, and whether different treatment str…

This study collects heart tissue and blood samples from people with advanced heart failure who are receiving a mechanical heart pump (LVAD) or a heart transplant. The samples are compared with healthy donor heart tissue to learn more about the biology of heart disease. The goal i…

This study tracks 500 adults with stable coronary artery disease or unstable angina who are undergoing a heart procedure called percutaneous coronary intervention (PCI) using a drug-coated balloon. Researchers are looking at how procedural details—specifically how long the balloo…

This study will enroll 5,000 adults with chronic heart conditions like heart failure, high blood pressure, or aortic stenosis. Participants will wear a Prolaio digital health patch that monitors heart rate, breathing, and other vital signs. The goal is to observe how these condit…

This study aims to find how common the KIT D816V mutation is in people with suspected clonal mast cell disease. Researchers will collect blood samples from 450 participants and test them using two sensitive methods. The results may improve understanding and diagnosis of these rar…

This study investigates whether people who had carpal tunnel surgery might have a higher chance of having ATTR amyloidosis, a condition where abnormal proteins build up in tissues, potentially affecting the heart. Researchers will biopsy tissue from about 180 patients who had car…

This study looks at whether a special CT scan (CT-FFR) can help doctors predict heart attacks and other serious events in people with chronic coronary syndrome. About 3,000 participants in China will be followed for up to 5 years. The goal is to see if abnormal CT-FFR results are…

This study looks at how therapeutic cooling after cardiac arrest affects the body's energy expenditure and which nutrients (sugars, fats, proteins) are burned for fuel. About 40 unconscious patients will be cooled to either 33°C or 36°C and given a fixed nutrition plan. Researche…

This study is creating a decision aid for people with a rare heart condition called right anomalous aortic origin of a coronary artery (R-AAOCA). The condition raises the risk of sudden cardiac death, but the best management—surgery or careful observation—isn't clear. The aid wil…

This study is looking for tiny molecules in the blood called microRNAs that can help doctors tell if a heart transplant patient's immune system is too active (causing rejection) or too weak (causing infection). Researchers will follow 250 adult heart transplant recipients for one…

This study uses advanced MRI to measure the fat around the heart in people with a type of heart failure called HFpEF. Researchers want to see if the fat's composition, not just its amount, is linked to disease severity. They will also test if a diabetes drug called semaglutide ch…

This study looks at whether certain fat molecules in the blood, called lipids and ceramides, are linked to atrial fibrillation, a common heart rhythm problem. Researchers will compare blood samples from people with atrial fibrillation to those with other heart conditions but no a…

This study looks at whether combining a new type of CT scan with a blood test for tiny molecules called microRNAs can better predict heart damage after a heart attack. Researchers will follow 95 patients who had a severe heart attack and measure changes in their heart size over s…

This study is an early-stage trial to check the safety of a new drug called RO7763505. It involves 196 participants, first in healthy volunteers and then in people with stable coronary artery disease. The main goal is to see if the drug is safe and how the body processes it, not …

This study is looking at tiny molecules called microRNAs in the blood of children who have had a heart transplant. The goal is to find patterns that can predict which children are at risk for infection or rejection of the new heart. By understanding these patterns, doctors hope t…

This study is a registry that tracks what happens when the HeartStart FRx, an automated external defibrillator (AED), is used on people suspected of having a cardiac arrest. The goal is to verify the device's safety and performance in real-world situations, such as whether it acc…

This study observes how core body temperature changes in adults who experience cardiac arrest outside the hospital. Researchers will measure temperature using a probe inserted into the esophagus during resuscitation and transport to the hospital. They will also track environmenta…

This observational study will analyze medical records from over 52,000 people with ATTR amyloidosis, a rare disease where abnormal proteins build up in organs. Researchers want to learn about patients' symptoms, treatments, and outcomes in everyday medical practice. No new treatm…

This study tests a special toilet device that automatically measures urine and stool output in hospital patients. About 54 adults receiving stem cell transplants will use the device during their stay. The goal is to see if the device is as accurate as nurses manually measuring ou…

This study looks at whether using a special heart ultrasound (called TEE) during emergencies helps doctors make better decisions and improves patient outcomes. Researchers will track 1,000 critically ill adults in the ER or ICU who receive this test as part of their care. The goa…

This study tests whether it is possible to run a larger trial comparing two ways of using a breathing machine (ventilator) in critically ill heart patients who need help breathing. The two modes are volume-controlled (delivers a set amount of air each breath) and pressure-control…

This study aims to understand why some people with heart failure respond well to standard guideline-directed medical therapy while others do not. By analyzing genetic data and biomarkers from a large biobank of 5,000 patients, researchers hope to identify predictors of treatment …

This study is looking at whether advanced heart imaging, especially cardiac MRI, can help identify the cause of cardiomyopathy and predict risks like death or heart failure in a diverse group of patients. The research focuses on adults in the Bronx, including many from Hispanic a…

This study looks at whether advanced imaging can detect a hidden heart condition called cardiac amyloidosis in people with severe aortic valve stenosis. The condition can complicate treatment and recovery. Researchers will use echocardiography, CT, and SPECT/CT scans to check for…

This study creates a global registry for people with mitochondrial disorders—rare diseases that affect energy production in cells. By collecting health data from 6,000 participants worldwide, researchers aim to understand how these diseases progress and identify the best ways to …

This study aims to find out how often exocrine pancreatic insufficiency (EPI) occurs in people with Alagille syndrome who have had a liver transplant. About 30 participants aged 7 to 50 will eat a high-fat diet and collect stool samples for lab testing. The results will help doct…

This study watches people with blood cancers like CLL who take BTK inhibitors or venetoclax to see how these drugs affect heart rhythm. Researchers will use EKGs, stress tests, and heart monitors to track abnormal rhythms and sudden death risk. The goal is to better understand an…

This study looks at whether measuring the heart's 'reserve'—its ability to pump harder under stress—can predict how patients with advanced heart failure will do. Five patients with weak hearts (ejection fraction 40% or less) will be randomly assigned to receive the drug milrinone…

This study tests a brochure called ASQ-CT that helps patients ask their doctors better questions about clinical trials. About 293 adults with cancer, heart disease, or neurological conditions will use the brochure before a doctor visit. Researchers want to see if it makes patient…

This trial is testing a medical device that has not been approved by the U.S. FDA. The purpose is to gather information about how the device works and its safety in people. Participants will be monitored closely, but the device is not yet proven to treat or cure any condition.

This study looks at adults with spinal deformity to understand which factors—like pain, daily functioning, mental health, and frailty—most influence quality of life. It follows 320 people receiving either conservative care, first-time corrective surgery, or a reoperation, using q…

This study follows 1,000 adults with myotonic dystrophy type 1 (DM1) over time to measure how the disease progresses. Researchers will track walking speed, hand muscle relaxation, grip strength, heart and lung function, and daily activity. The goal is to establish reliable biomar…

This pilot study tests whether a special MRI technique can measure wall shear stress—the force of blood against vein walls—in the pulmonary veins of infants. These veins carry blood from the lungs to the heart, and narrowing them (pulmonary vein stenosis) is a life-threatening co…

This study follows 30,000 people in Korea who experienced cardiac arrest outside a hospital, tracking their survival and brain function for up to six months. The goal is to understand the factors that influence outcomes, which could help improve emergency care and resuscitation p…

This study will compare two types of heart-lung machines used during coronary bypass surgery to see how they affect blood flow to the brain. Researchers will measure brain pressure using an eye ultrasound and brain oxygen levels with a forehead sensor in 70 patients. The goal is …

This study is for breast cancer patients receiving certain chemotherapies that can harm the heart. Researchers want to see if a genetic marker called TRPC6 can predict who will develop heart problems. By analyzing blood samples, they hope to find early warning signs and ways to p…

This study aims to create an artificial intelligence (AI) model that can predict complications in children who have a common heart defect called a ventricular septal defect (VSD) repaired with a catheter-based procedure. Researchers will analyze data from over 5,000 children's me…

This study is testing new magnetic resonance imaging (MRI) techniques to get clearer pictures of the heart and blood vessels without using radiation. Researchers will compare these new MRI methods to standard tests like angiography and CT scans. Up to 4,000 adults—including healt…

This study follows about 50 members of a family with a rare inherited condition called familial hypereosinophilia, where high levels of a type of white blood cell can damage the heart and nerves. Researchers will track participants over many years with yearly checkups, blood test…

This study compares people who have had a mitral valve procedure for mitral stenosis with healthy volunteers. Researchers will measure exercise capacity, muscle oxygen levels, and artery stiffness to understand long-term effects. The goal is to gather knowledge that may improve f…

This study collects information from trauma patients who experienced cardiac arrest due to injury. Researchers will review medical records to see how different pre-hospital treatments, like breathing tubes or medications, relate to survival. The goal is to find patterns that coul…

This study looks back at medical records of 100 older adults (60+) who had hip surgery after an injury. Researchers want to see if a simple frailty score or standard heart tests better predict who will have complications or die after surgery. The goal is to find better ways to as…

This study is looking at whether detailed heart imaging can help predict heart problems in people with liver cirrhosis who undergo a procedure called TIPSS, which creates a shunt to relieve pressure in the liver. Participants will have heart MRIs and echocardiograms before, short…

This study compares two ultrasound techniques—2D and 3D speckle-tracking echocardiography—to see which measures heart muscle contraction more accurately in people with heart failure and reduced pumping function. Researchers will enroll 419 patients from seven cardiac rehabilitati…

This study aims to develop better MRI methods for imaging the heart and brain, and to describe heart diseases using these new techniques. It will also investigate whether gadolinium, a common MRI contrast agent, stays in the body long after use. Up to 5,000 healthy volunteers and…

This study is collecting blood samples and health data from 15,000 symptom-free adults over 40 to understand what healthy aging looks like at the molecular level. By tracking participants over time, researchers hope to establish normal ranges for thousands of blood markers and id…

This study looks at how blood levels of common blood thinners (apixaban, dabigatran, edoxaban, and rivaroxaban) change over time in Chinese patients with atrial fibrillation. Researchers will take blood samples before and after stopping the medication for medical procedures. The …

This study examines whether a structured cardiac rehabilitation program — including exercise, education, and lifestyle changes — can influence ferroptosis, a form of regulated cell death, in people with coronary artery disease. Researchers will compare gene expression and blood m…

22q11.2 deletion syndrome can cause heart defects, facial differences, and learning challenges, but its severity differs widely from person to person. This study analyzes DNA from 1,000 people with the deletion to identify genetic variations that might influence how the disorder …

This study aims to better understand heart disease in people with Friedreich's ataxia, a genetic disorder that affects coordination and often leads to life-threatening cardiomyopathy. Researchers will use cardiac MRI, echocardiograms, and exercise stress tests to measure heart fu…

This study tests whether a wireless sensor placed on the forehead can accurately measure oxygen levels in the brains of infants in the neonatal intensive care unit (NICU). The wireless device is compared side-by-side with the standard wired monitor in 20 newborns with conditions …

This study explores barriers to heart failure self-care and care transitions for adults facing social challenges. Researchers will interview patients, caregivers, and community health workers to identify what gets in the way of good care. The goal is to use these insights to desi…

This study aims to understand how heart problems develop in people with Duchenne and Becker muscular dystrophy, as well as in carriers. Researchers will collect cardiac MRI scans and clinical data from 1,000 participants to build a registry. Using advanced image analysis and deep…

This study explores whether a special PET/MR scan can detect early signs of heart muscle damage after a heart attack. Researchers will scan 25 adults about 10 days after their heart attack and then track their heart function with MRI scans at 3 and 6 months. The goal is to see if…

This study investigates whether testicular cancer survivors who received cisplatin-based chemotherapy and bone marrow transplant have hidden heart disease that standard checkups might miss. Researchers will use advanced blood tests and CT scans to measure cholesterol, plaque in t…

This study tests whether a machine learning model can predict the outcome of a common heart procedure — placing a stent to open a hardened, calcified artery. Researchers will measure blood flow and pressure before and after the procedure in 100 adults with coronary artery disease…

This study tracks 400 people who had a procedure to close a patent foramen ovale (PFO), a small hole between the heart's upper chambers that can raise stroke risk. Researchers want to see how often strokes or mini-strokes return, whether a residual shunt persists, and what factor…

This study screens children and adolescents aged 5 to 18 who have chronic conditions like congenital heart disease, inflammatory bowel disease, celiac disease, or rheumatic diseases for lipid metabolism disorders. Participants provide a blood sample and complete a questionnaire a…

This study examines whether the duration a patient spends on cardiopulmonary bypass (heart-lung machine) and with the aorta clamped during coronary artery bypass surgery is linked to how long they stay in the intensive care unit afterward. Researchers will review medical records …

This study looks at a heart condition called cirrhotic cardiomyopathy that can affect people with advanced liver disease (cirrhosis). Researchers want to learn how common it is, what increases the risk, and whether bile acids in the blood play a role. About 440 adults with decomp…

This observational study will test whether an artificial intelligence algorithm can accurately detect heart sounds using data from a wearable ECG patch in 50 people with heart failure. Participants will wear the patch and have their heart sounds recorded with a digital stethoscop…

This study aims to create a better way to predict stroke risk in people with atrial fibrillation (an irregular heartbeat) who are already taking direct oral anticoagulants (DOACs), a type of blood thinner. Even with these medications, some patients still have strokes. Researchers…

This observational study investigates whether blood clotting markers and heart ultrasound measurements can help assess stroke risk in people with device-detected atrial fibrillation—a brief, symptomless irregular heart rhythm picked up by pacemakers or similar implants. Researche…

This study follows 400 people in Norway with multiple myeloma, plasma cell leukemia, or AL amyloidosis who are receiving newer immunotherapies like teclistamab, elranatamab, or CAR-T cell therapy outside of clinical trials. Researchers will track how well these treatments control…

This study is a large registry that collects data from thousands of patients across Asia who have undergone transcatheter aortic valve replacement (TAVR) for severe aortic stenosis. Researchers will analyze medical records to see how well the valves perform over time and what fac…

This study aims to deeply profile people with Postural Orthostatic Tachycardia Syndrome (POTS) using a wide range of tests, including blood work, heart imaging, skin biopsies, and cardiovascular assessments. By analyzing these results, researchers hope to identify distinct subgro…

This study investigates whether adding inspiratory muscle training—breathing exercises that strengthen the diaphragm—to standard cardiac rehabilitation can improve blood flow and blood pressure responses during exercise in people with heart failure. The trial includes both heart …

This registry collects detailed information from 1,000 patients with infective endocarditis, a serious heart infection. Researchers will track demographics, microbiology, imaging, and outcomes to understand current treatment effectiveness and guide future studies. The goal is to …

This observational study will follow 2,352 adults with coronary heart disease to see how factors like blood sugar, sleep, and heart imaging relate to thinking and memory problems. Participants will take memory tests and undergo scans and blood work during a hospital stay. The goa…

This study looks at why some people with severe heart failure (called HFrEF) see their heart function improve after standard medical therapy, while others do not. Researchers will collect blood samples and imaging data from 1,740 patients in China and follow them for 12 months. T…

This study investigates whether certain proteins or chemical changes in the blood can predict who will develop atrial fibrillation (AF), a condition that can lead to strokes. Researchers will follow 500 people with implanted pacemakers or defibrillators for up to 11 years, using …

This study investigates whether clonal hematopoiesis of indeterminate potential (CHIP)—a condition where blood cells carry certain mutations—plays a role in heart failure. Researchers will examine 300 adults with acute or chronic heart failure to see how common CHIP is and how it…

This study is a national registry in Hungary that collects medical information from people diagnosed with systemic amyloidosis, a rare disease where abnormal proteins build up in organs. Researchers will look at patient records to understand how the disease starts, how it is diag…

This study tests a new pulse oximeter worn on the abdomen, designed to measure oxygen levels in infants with congenital heart disease. Researchers compare its accuracy against standard fingertip monitors and direct blood measurements. The device also includes features to reduce e…

This study tests whether ultrasound scans can detect leftover fluid in the lungs and veins of people hospitalized for heart failure. About 580 adults will get scans at several points during their stay, but doctors won't see the results. Researchers will then track who is readmitt…

This study tests new MRI techniques to examine the heart's small blood vessels and scarring in people with a type of heart failure called HFpEF. Researchers will compare scans from healthy volunteers and patients to see if these methods can reveal hidden heart problems. The goal …

This study looks at how the brain, heart, and blood vessels interact in healthy adults. Researchers will measure heart activity, brain waves, blood pressure, and blood flow while participants rest, stand up, and watch emotional videos. The goal is to better understand the body's …

This study investigates whether monitoring brain blood flow during heart surgery can help predict strokes afterward. Researchers will use non-invasive sensors to track how well the brain regulates its own blood supply during different phases of surgery. The goal is to develop a m…

This study is testing whether a special type of imaging called FAPI can better predict how much heart function will improve after bypass surgery or stenting in people with ischemic heart failure. Researchers will follow 122 patients for 12 months, measuring changes in heart pumpi…

This study compares different types of heart valve prostheses used to treat severe aortic stenosis in people with a small aortic annulus. Researchers will test the valves in the lab and then in patients using echocardiograms and a special MRI scan that measures blood flow. The go…

This registry tracks 2,000 adults with congenital heart disease who are on the waiting list for a heart or heart-lung transplant. The goal is to understand why some patients get worse or die while waiting, while others improve enough to be removed from the list. By collecting dat…

This early-stage study tests a new drug called CDR132L in 32 healthy adults. Researchers want to see how much of the drug gets into the blood when given as a shot under the skin compared to an IV drip. The goal is to find the best way to give this medicine to people with heart fa…

This study investigates why some people with moderate aortic valve stenosis get worse while others remain stable. Researchers will analyze immune system markers and detailed heart images from about 938 participants to find patterns that predict disease progression. The goal is to…

This study tracks 98 people with peripheral artery disease who had a stent placed in their iliac artery. Researchers want to see which patients later develop serious limb complications, like needing another procedure or amputation. They will also check if frailty plays a role. Th…

This study tests whether an artificial intelligence algorithm can predict survival and complications in people who have had a cardiorespiratory arrest and been revived. Researchers will analyze hospital records from 300 to 500 patients treated in intensive care units in France be…

This study tests whether advanced MRI scans that map the brain's structural and functional connections can better predict neurological recovery in coma patients after cardiac arrest than standard methods. Researchers will scan 263 adults who remain unconscious at least 72 hours a…

This study is testing a non-invasive device that uses sensors placed on the chest to monitor heart failure patients during their hospital stay and for 90 days after discharge. The goal is to see if the device's measurements can help predict which patients are at higher risk of be…

This study tests a new PET scan technique to better track heart damage in people with a condition called ATTR-CM, a progressive heart muscle disease. Researchers will scan 140 participants to see if the imaging can show how well treatments are working. The goal is to improve moni…

This study is creating a large database of information from 10,000 adults undergoing heart surgery. Researchers will collect detailed data before, during, and after surgery to identify factors that affect recovery and complications. The goal is to improve risk prediction, persona…

This study watches for heart changes in 150 adults receiving chest radiation for lung, esophageal, breast, or thymus cancer. Researchers will check heart markers, electrical activity, and immune cells at the end of treatment and up to 3 months later. The goal is to find early sig…

This study follows 3,450 patients with aortic valve narrowing (aortic stenosis) to better understand their long-term outlook. Researchers will look at ultrasound measurements and other factors to find what predicts how the disease progresses. The goal is to improve how doctors as…

This study is a registry that collects information from all suspected heart attack cases in Tomsk, Russia. It aims to track how many people die within 28 days and one year after a heart attack. No new treatments or drugs are being tested—just observation and data gathering.

This study is tracking 1,500 people with cardiac sarcoidosis—a condition where inflammation affects the heart—to learn how doctors currently diagnose and treat it. Researchers will also test whether corticosteroid therapy improves outcomes. The goal is to create better guidelines…

This study is looking at whether women with lower ovarian reserve (fewer eggs) have had more early miscarriages in the past. Researchers will measure ovarian reserve with a blood test (AMH) and an ultrasound (antral follicle count) in over 2,000 women seeking fertility care. This…

This study looks at whether a special imaging technique called Quantitative Flow Reserve (QFR) can help predict how well a blood vessel graft will work after coronary artery bypass surgery. Researchers will follow 110 patients for one year after surgery to check if the grafts sta…

This study adds a heart-focused PET scan to a standard cancer imaging test (Gallium-68-DOTATOC) in 99 adults with neuroendocrine tumors. The goal is to see if the scan can detect heart inflammation linked to age and cardiovascular risk factors. Researchers will also compare scan …

This study tracks immune-related substances in the blood of 40 women undergoing a frozen embryo transfer. Researchers want to see how these markers change before and after the transfer, and whether they relate to pregnancy success. The goal is to better understand the role of the…

This study aims to better understand how Pompe disease affects the nerves and muscles involved in breathing. Researchers will analyze nerve conduction and diaphragm activity in 20 adults with Pompe disease or unexplained respiratory failure. The goal is to identify patterns that …

This observational study at Brigham and Women's Hospital will use advanced MRI scans to see if brain activity and structure can predict recovery in 50 people who are comatose after a cardiac arrest. Participants will have a special MRI during their standard scan and be followed f…

This study aims to uncover the genetic causes of cardiomyopathy in children by analyzing DNA from affected individuals and their families. Researchers hope to identify mutations that lead to different types of cardiomyopathy, which could improve genetic counseling and deepen unde…

This study is looking at whether a simple exercise test and other health factors can predict how well people recover after a procedure called TAVI, which replaces a narrowed heart valve. Researchers will follow 161 patients with severe aortic stenosis to see which factors before …

This study aims to collect DNA samples and medical information from 2,000 people with heterotaxy (a condition where organs are arranged abnormally) and related heart defects, along with their family members. Researchers hope to identify the genetic causes of these conditions, whi…

This study looks at whether people with heart failure can reduce their intake of ultra-processed foods (like packaged snacks, sugary drinks, and fast food) and whether doing so improves their health. Participants will track their meals using a smartphone app and receive coaching …

This study collects data from wearable devices like Fitbit and Apple Watch to learn about daily habits and health in people with or at risk of heart failure. Researchers will combine this data with medical records to find patterns that might predict health problems. The goal is t…

This study follows 645 patients hospitalized with infectious endocarditis, a serious heart infection. Researchers will track hospital deaths and long-term survival to identify factors that influence prognosis. The goal is to better understand how the disease progresses and what a…

This study is observing 400 adults with moderate or severe tricuspid regurgitation, a condition where a heart valve does not close properly. Researchers will track participants over time to learn how the disease progresses and what factors affect survival. No new treatments are b…

This study investigates whether blood sugar patterns, measured continuously with a wearable sensor, can predict serious heart problems in the year following a heart attack. Researchers will enroll 850 people hospitalized with acute coronary syndrome and track their glucose levels…

This registry will collect health information from 8,000 patients with cardiogenic shock, a life-threatening condition where the heart suddenly can't pump enough blood. Researchers will track what treatments patients receive and how they fare, including survival rates in the hosp…