Diastolic heart failure

This large study compares two diabetes drugs—oral semaglutide and sitagliptin—in over 25,000 people with type 2 diabetes and heart failure. Researchers want to see which drug better prevents heart failure worsening or death. The study uses existing medical records to mimic a clin…

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

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

This study tests a device called the Edwards APTURE shunt, which is implanted in the heart to create a small opening that lowers pressure. The goal is to see if it can improve symptoms and quality of life for 100 people with a certain type of heart failure. Half of the participan…

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

This Phase 3 study tests a weekly injection called retatrutide in about 1,946 people with severe obesity (BMI ≥35) and established heart disease. The goal is to see if it helps with weight loss and improves heart-related health measures over 113 weeks compared to a placebo. Parti…

This study tests whether a weekly injection of CagriSema (a combination of two drugs) can reduce the risk of heart attacks, strokes, and other heart-related events in people with established cardiovascular disease. About 7,100 participants will receive either CagriSema or a place…

This early study is testing a device that uses ultrasound to ablate (calm) nerves in the pulmonary artery. The goal is to see if this procedure can improve quality of life for 50 people with heart failure and a specific type of pulmonary hypertension (Group 2). Participants will …

This large study compares two popular diabetes drugs, tirzepatide and semaglutide, in 26,000 people who have both type 2 diabetes and a type of heart failure. Researchers will track who ends up in the hospital for heart failure or dies, to see if one drug works better. The goal i…

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

This study was designed to test the safety and tolerability of a new drug called JK07 in people with heart failure and a specific type of high blood pressure in the lungs. It planned to enroll about 20 to 30 adults aged 18 to 85. However, the study was withdrawn before any partic…

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

This study 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 phase 3 trial tests whether a monthly injection of pelacarsen can reduce major heart problems like heart attacks and strokes in people with high levels of Lp(a), a genetic risk factor. Over 8,000 participants with existing heart disease are being followed for several years. …

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

This large study is testing whether a lower blood pressure target can reduce major heart problems like heart attacks, strokes, and heart failure in people with type 2 diabetes. About 9,500 participants with high blood pressure and high cardiovascular risk are being randomly assig…

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

This study tests a small device called the Corvia Atrial Shunt in 750 people with heart failure where the heart pumps normally but doesn't fill properly. The device creates a tiny passage between heart chambers to relieve pressure. Participants are randomly assigned to get the sh…

This trial tests whether a procedure called catheter ablation works better than anti-arrhythmic drugs for people with structural heart disease who have had a dangerous fast heart rhythm (ventricular tachycardia). About 162 participants will be randomly assigned to either ablation…

This study tests whether a drug called finerenone can reduce scarring and fat buildup in the heart muscle of people with diabetic kidney disease and heart failure. About 40 adults will take the pill daily for 6 months and get advanced heart scans to see if their heart structure i…

This study tests a dual GIP/GLP-1 drug (a type of diabetes medication) in 120 adults in Kazakhstan who have both chronic heart failure and type 2 diabetes. Participants take the drug for 40 weeks and have regular heart tests, blood work, and genetic checks. The goal is to see if …

This was a planned Phase 2 study testing a drug called CDR132L in about 130 people with heart failure and a preserved or mildly reduced ejection fraction. The drug aimed to reverse harmful changes in the heart muscle. However, the trial was withdrawn before any participants were …

This study tests whether giving patients capsules containing gut bacteria (called Probacine) before and after heart surgery can reduce gut injury and organ failure. Researchers will enroll 500 adults undergoing cardiovascular surgery. The goal is to see if changing the gut microb…

This study tests whether enavogliflozin, a diabetes drug, can improve outcomes in people with heart failure and a leaky tricuspid valve. About 541 participants will receive either the drug or a placebo for 18 months. Researchers will track heart-related events, valve worsening, a…

This Phase 2 study tests an injectable drug called HRS9531 in 203 obese adults with a type of heart failure where the heart pumps normally but is stiff. Participants receive either the drug or a placebo for 52 weeks. The main goals are to see if the drug helps with weight loss an…

This registry follows 350 adult heart transplant patients whose donor hearts were kept alive and beating using the OCS Heart System before transplant. The goal is to see how well patients do one year after surgery. The device may allow more donor hearts to be used, especially tho…

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

This study explores whether a simple, non-invasive leg movement test can measure blood vessel health in older adults. Researchers will use ultrasound to track blood flow changes after a passive leg movement, comparing young healthy people and older patients undergoing heart tests…

This study looks at better ways to diagnose a type of heart failure called HFpEF in people who have unexplained shortness of breath. Researchers will compare non-invasive tests to the standard invasive method in 30 adults aged 18-90. The goal is to make diagnosis easier and more …

This large study tested whether taking daily vitamin D3 and omega-3 (fish oil) supplements can lower the risk of developing cancer, heart disease, or stroke. Over 25,000 healthy older adults (men 50+, women 55+) took the supplements or placebos for about 5 years. The goal is to s…

This study looks at whether aggressive weight loss using semaglutide can improve symptoms in people with a specific type of heart failure linked to obesity. About 81 participants with a BMI of 30 or higher and heart failure with preserved ejection fraction will receive either sem…

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

This study tests whether allopurinol, a common gout medication, can improve heart function in African American veterans with resistant hypertension. Participants take allopurinol for 8 weeks, and researchers measure changes in heart function, exercise ability, and quality of life…

This study tests a nurse-led education program designed to help women in cardiac rehab address sexual concerns after a heart event. Sixty-six women will be randomly assigned to either the program or usual care. The goal is to see if the program improves sexual function, mood, and…

This study tests whether adding blood flow restriction (BFR) to standard resistance training helps heart rehab patients get stronger and healthier. Twenty adults with stable heart disease will do exercises with and without a special cuff that limits blood flow to the arms and leg…

This study looks at whether gradually stopping beta-blockers (medicines often used for heart failure) can improve symptoms and daily function in adults aged 60 and older with a specific type of heart failure called HFpEF. About 240 participants will either taper off their beta-bl…

This study tests a program called CHAT for people aged 60 and older with a type of heart failure called HFpEF. Participants get up to four sessions with a health coach and watch seven educational videos, all from home. The goal is to see if this helps them manage their condition …

This study tests whether a nerve block given before heart surgery can reduce pain and the need for opioid painkillers afterward. About 150 adults having heart surgery will receive either a long-acting or standard form of the numbing drug bupivacaine via ultrasound-guided injectio…

This study tests a short program that helps heart patients and their families explore what gives life meaning during cardiac rehab. About 80 people in Denmark will try one of three formats: one-on-one, with a relative, or in a group. The goal is to see if this approach can reduce…

This study tests a personalized, remotely monitored exercise program for 150 people with a type of heart failure called HFpEF. The goal is to see if the program improves heart function, muscle health, and quality of life. Participants will follow a structured exercise plan and be…

This study tests whether a ketone drink can improve exercise capacity in people with heart failure with preserved ejection fraction (HFpEF). Twenty participants will receive either the ketone drink or a placebo for 8 weeks, then switch. The main goal is to see if the drink helps …

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

This study uses healthcare claims data from nearly 40,000 people to see if the results of a major clinical trial (EMPEROR-Preserved) can be reproduced in a real-world setting. Researchers are comparing two diabetes drugs, empagliflozin and sitagliptin, in patients with heart fail…

This study tracks 120 adults with heart disease and at least two other long-term illnesses to see how often dangerous drug interactions happen. Researchers check medications, including over-the-counter and herbal products, and follow participants for a year. The goal is to unders…

This study tracks over 1,700 heart patients who had hip or knee replacement surgery. Researchers want to see how often bleeding or blood clots happen in the months after surgery. The goal is to find better ways to prevent these complications.

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

This study will observe 200,000 Chinese adults with heart disease to see how their heart and lung function changes over 5 years. Participants will take a special exercise test to measure their fitness. Researchers hope to find better ways to predict future heart problems like hea…

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

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

This study follows 2000 people with dilated cardiomyopathy (a weakened, enlarged heart) over several years to learn how genetics and heart scarring affect the disease. Participants give blood for genetic testing and have heart MRI scans. The goal is to improve diagnosis and pave …

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

This study looks at why Veterans with heart failure with preserved ejection fraction (HFpEF) get tired so easily during exercise. Researchers will block nerve signals from leg muscles to see how that affects blood flow and fatigue, both before and after a regular exercise program…

This study tests whether a noninvasive procedure called remote ischemic preconditioning can improve blood vessel function in people with suspected heart failure with preserved ejection fraction. Participants will have a blood pressure cuff inflated around their arm in cycles, whi…

This study looks at whether special heart MRI scans can help predict serious events like death or hospital stays in people with a type of heart failure called HFpEF (heart failure with preserved ejection fraction). Researchers will scan 3000 patients with HFpEF and 500 healthy vo…

This study uses advanced heart MRI scans to better understand early-stage heart failure in people with risk factors like diabetes, high blood pressure, or obesity. Researchers will follow 3,000 participants over time to see how the heart changes and who develops serious problems.…

This study creates a registry of 240 patients hospitalized with decompensated heart failure with preserved ejection fraction. Researchers will track medical history, body composition, imaging, and blood markers to see how these factors relate to short- and long-term outcomes. The…

This study looks at how being in a hospital intensive care unit (ICU) after heart surgery affects your body's natural sleep-wake cycle. Researchers will track sleep patterns and thinking ability in 15 adults to see if disrupted rhythms slow down recovery. The goal is to understan…

This study aimed to see if using a special pad along with a standard closure device could help patients get out of bed sooner after a heart catheterization. It was planned for adults having the procedure through the groin. However, the study was withdrawn before any participants …

This registry follows 75 pregnant women with heart disease to better understand the risks and outcomes for both mother and baby. Researchers will track health data for one year and check vital status at five years. The goal is to fill knowledge gaps and improve future care for th…

This study tests whether a personalized 'N-of-1' trial can help older adults with a type of heart failure (HFpEF) decide if they want to continue or stop taking beta-blockers. Twenty participants will go through periods on and off their beta-blocker, in a random order, to see how…

This study looks at tiny RNA molecules in the blood of 200 people hospitalized with acute congestive heart failure. Researchers want to see if these RNA levels change as patients receive decongestive therapy and if they can help predict who will respond well to treatment. The goa…

This study follows 347 heart surgery patients to understand why some develop swallowing problems (dysphagia). Researchers will use special camera tests to watch how patients swallow and look for risk factors. The goal is to create simple tools that doctors can use at the bedside …

This study looks at how two drugs, Sacubitril/Valsartan (Entresto) and MANP, affect people with a type of heart failure called HFpEF, which also involves chronic kidney disease or shortness of breath during exercise. Researchers will measure changes in body chemicals and kidney f…

This study is following 10,000 adults who are having a heart MRI for medical reasons. Researchers want to see if the MRI results can help predict who will have heart problems in the future, like heart attacks or heart failure. The goal is to better understand how MRI scans can gu…