Diastolic heart failure

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 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 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 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 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 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 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 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 phase 2 trial tests whether an investigational drug called activin ligand-trap, combined with exercise training, can improve exercise capacity and cognitive function in 48 adults with heart failure with preserved ejection fraction (HFpEF). Participants will receive either th…

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 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 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 phase 3 trial tests whether maridebart cafraglutide (MariTide) can reduce heart failure events like hospitalizations and urgent visits in people with obesity and a specific type of heart failure (preserved or mildly reduced ejection fraction). About 5,056 participants will r…

This study tests whether a drug called enavogliflozin can prevent major heart problems or worsening heart failure in people who have had a heart valve replacement (TAVR) and still have heart failure. About 1,040 participants will receive either the drug or a placebo, in addition …

This study is testing whether potassium nitrate, alone or combined with two supplements (propionyl-L-carnitine and nicotinamide riboside), can improve exercise endurance in people with a type of heart failure called HFpEF. About 53 participants will take these agents and undergo …

This study tests a new drug called CK-4021586 (ulacamten) in 60 adults with a type of heart failure where the heart pumps normally but is stiff (HFpEF). Participants take the drug or a placebo for 12 weeks to see if it is safe and how it affects heart function. The goal is to fin…

This study tests whether adding empagliflozin (a diabetes drug) to standard carvedilol treatment can prevent liver decompensation events and death in 400 adults with cirrhosis and left ventricular diastolic dysfunction (stiff heart). Participants will receive either empagliflozin…

This study tests whether dapagliflozin, a drug used for diabetes and heart failure, can lower vein pressure in adults with a failing Fontan circulation. About 27 participants will take the drug or a placebo for 3 months. The goal is to see if it helps the heart pump blood more ea…

This study tests whether a three-drug combination (SGLT2 inhibitor, ARNI, and MRA) can improve heart structure, function, and symptoms in 50 people with advanced HFpEF, a type of heart failure where the heart is stiff but pumps normally. Participants will receive either the tripl…

This study tests whether taking a daily selenium supplement (200 micrograms) can reduce hospitalizations and heart-related deaths in people with heart failure. Selenium is a nutrient important for heart health, and low levels are common in Northern Europe. The trial will include …

This early-stage trial tests a new drug called VS-041 in 42 people aged 50 and older who have a type of heart failure where the heart pumps normally but is too stiff (HFpEF). The main goals are to check if the drug is safe and to measure changes in certain blood markers linked to…

This study tests whether adding macitentan to the standard drug dapagliflozin improves outcomes for people with heart failure and a specific type of high blood pressure in the lungs. 64 adults in South Korea will take either the combo or dapagliflozin alone for 24 weeks. Research…

This study tests a procedure that uses a catheter to treat a nerve in the body, aiming to improve symptoms in people with a type of heart failure called HFpEF. About 150 participants will be enrolled to see if the procedure is safe and effective. The goal is to help patients feel…

This study looks at whether combining two common diabetes drugs (GLP-1 agonists and SGLT2 inhibitors) can improve heart function and artery health in people with type 2 diabetes who are at high risk for heart problems. About 240 adults will be split into four groups, each receivi…

This study tests two ways to manage atrial fibrillation in people with heart failure: using a procedure called catheter ablation to restore normal rhythm, or using medications to control heart rate. About 84 participants will be randomly assigned to one of these approaches. The g…

This study tests a multidisciplinary clinic that provides heart failure patients with educational videos, a self-management kit, and follow-up phone calls after hospital discharge. The goal is to reduce 30-day readmission rates and improve patient satisfaction. The trial enrolls …

This pilot study is testing a new procedure called electroporation ablation (using the FARAPULSE system) to treat atrial fibrillation in 200 people who also have heart failure with preserved ejection fraction. Half will get the procedure, half will get standard medical care. The …

This study tests an experimental drug called HRS-7535 in 225 adults who have both heart failure (with mildly reduced or preserved pumping ability) and obesity. Participants will receive either the drug or a placebo for 36 weeks to see if it helps with weight loss and reduces infl…

This study looks at whether combining a heart procedure called ablation with a 12-week home exercise program can improve how well the body uses oxygen in people with a type of heart failure (HFpEF) and a common heart rhythm problem (atrial fibrillation). About 40 participants wil…

This study is testing a small device called the MiniLung petite kit, which helps oxygenate blood and remove carbon dioxide in newborns and children weighing 2 to 8 kilograms who have severe breathing or heart failure. The device works with a console to temporarily take over the w…

This study tests a program called Transition to Cardiac Rehabilitation (T2CR) for Veterans with heart disease who also have other health problems or frailty. The program starts in the hospital and continues at home, helping patients build skills and motivation to do cardiac rehab…

This study tests whether a cardiometabolic clinic can help obese adults with heart disease lose weight and improve health. Sixty participants will receive care from the clinic and be followed for 12 months. Researchers will measure weight loss, body mass index, and fat distributi…

This study tests two water pills—acetazolamide and metolazone—added to standard diuretics in 320 adults hospitalized with acute decompensated heart failure. The goal is to see which drug clears fluid buildup faster and more safely, reducing hospital stays and complications. Parti…

This study compares two approaches for people with permanent atrial fibrillation and heart failure with preserved ejection fraction. One group gets a pacemaker plus a procedure to ablate (destroy) the heart's AV node, while the other group continues with standard heart rate medic…

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

This study tests an artificial intelligence program that analyzes heart rhythm data from a small, wearable patch to estimate how well the heart pumps blood. Researchers will compare the AI's results to standard ultrasound in 2,000 adults. If accurate, this could offer a simpler, …

This study aims to see if a special MRI done during exercise can help doctors better diagnose and predict outcomes in people with a type of heart failure called HFpEF. Researchers will enroll 400 adults, including those with HFpEF, those with shortness of breath from other causes…

This study looks at whether advanced heart scans (echocardiogram and MRI) can help diagnose a type of heart failure called HFpEF, where the heart is stiff but pumps normally. Standard tests often miss it, leaving many without proper treatment. Researchers will study 40 adults wit…

This study tests whether artificial intelligence (AI) can analyze routine heart tests (ECGs) to find hidden heart problems like weak heart muscle, valve issues, or high lung pressure. About 590 adults without a prior heart disease diagnosis will have ECGs taken with standard mach…

This study tests whether ultrasound contrast agents (microbubbles) can estimate pressure inside the heart, potentially replacing invasive catheters. Ten adults with suspected heart disease will receive a standard ultrasound with contrast while also having a catheter for compariso…

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 looks at whether giving intravenous iron (Ferinject) to heart failure patients with low iron can improve their quality of life and walking ability. About 100 hospitalized adults with a specific type of heart failure (HFpEF) will receive either iron infusions plus diet …

This study tests whether increasing the pacemaker rate during light exercise can lower pressure inside the heart for people with heart failure with preserved ejection fraction (HFpEF). Twenty participants will have their heart pressures measured at rest and while cycling, as the …

This study is testing a new group exercise program combined with remote activity monitoring for older adults with heart failure with preserved ejection fraction (HFpEF). The goal is to see if this approach can improve exercise habits, physical function, and quality of life. About…

This study tests a new drug called HRS-1893 in 48 adults with heart failure where the heart pumps normally but is too stiff (heart failure with preserved ejection fraction). The main goal is to check safety and side effects, while also looking at changes in heart stress markers a…

This study looks at whether placing stents in blocked heart arteries can improve quality of life for people with heart failure with preserved ejection fraction (HFpEF), a condition where the heart muscle is stiff. About 350 participants will be randomly assigned to receive either…

This study tests whether adjusting a pacemaker's lower heart rate to an individual's optimal level can improve symptoms and quality of life in people with heart failure and bradycardia. Researchers will compare this personalized approach to the standard fixed rate of 60 beats per…

This study looks at whether giving L-Citrulline, tetrahydrobiopterin (BH4), and atorvastatin can improve blood vessel function and physical ability in veterans with a type of heart failure called HFpEF. About 90 participants will take these medications and be tested on how well t…

This study tests whether empagliflozin (a diabetes drug) and potassium nitrate (a supplement) can improve exercise endurance in people with heart failure with preserved ejection fraction (HFpEF). About 53 participants will take one of three combinations of these drugs for a perio…

This study tests whether a low dose of colchicine, an anti-inflammatory drug, can improve exercise capacity in people with heart failure and chronic inflammation. Sixty participants will be randomly assigned to receive either colchicine or a placebo for three months. Researchers …

This study looks at whether meeting with a coach, either in person or by video, helps adults with a certain type of heart failure (HFpEF) exercise more regularly. About 300 participants will be split into three groups for 18 months: one with no coach, one with in-person coaching,…

This study looks at whether a pacemaker can improve exercise ability and quality of life in people with heart failure with preserved ejection fraction (HFpEF) who also have a small heart chamber and a low heart rate during activity. About 30 participants will get a pacemaker and …

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 daily leg heat therapy can help people with heart failure with preserved ejection fraction (HFpEF) exercise longer and feel better. Participants wear water-circulating trousers heated to 42°C for 90 minutes each day at home. The goal is to see if this imp…

This study tests whether a tailored, home-based exercise program (with or without weight loss medications) can improve exercise capacity and quality of life in 120 adults with heart failure with preserved ejection fraction (HFpEF). Participants will follow exercise videos and mee…

This study tests a home-based cardiac rehabilitation program delivered through a custom mobile app for people with heart failure. Participants use the app for education, mindfulness, and physical activity guidance, plus periodic video calls with an exercise physiologist. The goal…

This study tests whether adding game-like elements and social rewards (like support or friendly competition) can motivate people with a type of heart failure (HFpEF) to walk more. About 270 adults will use a step tracker and be randomly assigned to one of two gamification program…

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 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 is testing a special PET scan that uses a tracer called 68Ga-FAPI to look for inflammation and scarring in the hearts of people with a specific type of heart failure (HFpEF). About 35 adults with this condition will get the scan to see how well it works. The goal is to…

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 110 patients aged 80 and older who are in the hospital for acute heart failure. Researchers will use ultrasound and blood tests to measure muscle loss (sarcopenia) and see how it affects their recovery over six months. The goal is to find better ways to predic…

This early-phase study is testing whether omega-3 fatty acids can reduce inflammation in the heart muscle of people with heart failure with preserved ejection fraction (HFpEF). Researchers will use special MRI scans before and after an iron-based infusion to detect changes in inf…

This study looks at whether breathing a low-density helium-oxygen gas mixture can reduce breathlessness and improve exercise capacity in people with heart failure with preserved ejection fraction (HFpEF) and obesity. Researchers will measure how much oxygen the body uses during b…

This study tests whether an AI tool called EchoGo can help doctors spot early signs of heart failure in people with type 2 diabetes who have no symptoms. Researchers will send alerts to doctors about patients at risk, and see if this leads to more prescriptions of heart-protectin…

Researchers at the University of Calgary are testing a new, non-invasive way to assess heart function using a handgrip exercise. The study involves 100 adults, half with heart failure and half without. Participants squeeze a device with maximum force for two minutes while sensors…

This study uses advanced MRI scans with a special manganese dye to look at how the heart handles calcium and energy in people with heart failure with preserved ejection fraction (HFpEF). Researchers will compare 40 people with HFpEF (half with type 2 diabetes) and 20 healthy volu…

This study is recruiting 130 people with heart failure with preserved ejection fraction (HFpEF), both obese and non-obese. Researchers will use CT and MRI scans, blood tests, and other checks to see if having more fat around the heart leads to worse heart function. The goal is to…

This study looks at why veterans with a common type of heart failure (HFpEF) have trouble exercising due to poor blood flow in their leg muscles. Researchers will compare 35 veterans with HFpEF to healthy volunteers, then have the veterans do 8 weeks of knee exercises to see if i…

This study looks at how severe obesity can lead to a type of heart failure called HFpEF, where the heart becomes stiff and has trouble filling with blood. Researchers will study 250 people with obesity using heart ultrasounds and blood tests to find early signs of heart problems.…

This study follows 500 people with a type of heart failure called HFpEF (heart failure with preserved ejection fraction) for at least 3 years. Researchers want to find out which medical signs or test results can predict serious problems like hospitalization or death. No new treat…

This study aims to find early signs of heart failure in women who had preeclampsia, a pregnancy complication involving high blood pressure. Researchers will use exercise stress tests and heart imaging to compare 250 women with a history of preeclampsia to 250 women with normal pr…

This study is looking at 1,000 people with and without heart failure to better understand the different types of the condition. Researchers will use heart images and blood tests to find patterns that could lead to more personalized treatments. The goal is to improve care for peop…

This study looks at heart tissue from 180 people with a type of heart failure called HFpEF. Researchers take tiny samples of heart muscle during a routine procedure to find changes in the tissue. The goal is to learn what causes this condition so better treatments can be develope…

This study looks at how a common diabetes drug (SGLT2 inhibitor) changes the way the heart and muscles use energy from ketones. Researchers want to see if these changes can improve exercise ability and daily function in 30 adults with type 2 diabetes and heart failure. Participan…

This study will use a mobile MRI truck to screen 600 people in large German cities who have risk factors like diabetes, high blood pressure, or obesity but no heart failure symptoms. The goal is to find out how many have hidden (stage B) heart failure. Results will be compared to…

This study aims to find early warning signs of heart failure in people with type 2 diabetes and metabolic syndrome by analyzing immune cells from a blood sample. Researchers will compare calcium and inflammation signals in these cells between patients with and without heart probl…

This pilot study is testing whether a 12-week monitored exercise program can improve heart health in veterans with a type of heart failure called HFpEF. Only 4 participants are being enrolled to see if the facility can support a larger study and if exercise shows any benefit with…

This study looks at why postmenopausal women have a higher risk of diastolic heart failure. Researchers will examine heart tissue from 500 patients undergoing cardiac surgery to study how estrogen loss affects heart energy and blood vessel health. The goal is to better understand…

This study is testing new heart MRI techniques to see how the heart adapts to stress, like exercise or fluid changes. Researchers will study 135 healthy volunteers and people with heart conditions. The goal is to improve understanding of heart function and develop better diagnost…

This study is testing whether a special wearable device, combined with artificial intelligence, can help people with chronic heart failure avoid hospital visits. About 205 adults will wear the device for six months while their health data is monitored remotely. The goal is to see…

This study looks at why people with a type of heart failure (HFpEF) have trouble exercising. Researchers will measure energy use in the heart and leg muscles using special scans. They aim to link these energy problems to how well patients can walk and exercise. The study does not…

This study creates a live registry of up to 40,000 heart failure patients across the Yale New Haven Health System. Researchers will track hospitalizations and use of recommended therapies like beta blockers and ACE inhibitors. The goal is to monitor and improve heart failure care…

This study uses a special heart MRI to see if a device called a coronary sinus reducer can improve blood flow in patients with heart failure with preserved ejection fraction (HFpEF) and coronary microvascular dysfunction (small vessel disease). The device is implanted to reroute …

This study looks at how often heart failure with preserved ejection fraction (HFpEF) occurs in people with COPD and how it affects their health over time. Researchers will follow 200 adults aged 50–70 in Russia who are hospitalized with COPD. They will use heart and lung tests to…

This study follows 100 adults who needed ECMO support for severe heart or lung failure. Researchers will track muscle size, strength, and quality of life over time to understand why some patients develop lasting weakness. No new treatments are being tested; the goal is to gather …

This observational study looks at how fitness level relates to bacteria in the mouth and blood flow to muscles. Researchers will collect mouth swabs, saliva, and blood samples, and measure exercise capacity in 70 adults with heart failure, peripheral artery disease, or overweight…

This study tests a new imaging tracer called 11C-Martinostat that lights up a specific enzyme (histone deacetylase) in the heart during a PET-MRI scan. Researchers will compare enzyme activity in people with aortic stenosis or diabetes to healthy volunteers. The goal is to see if…

This study is observing 3000 adults with various types of heart failure to learn how the disease develops and progresses. Researchers will collect medical records, blood samples, and imaging data to identify distinct patient groups. The goal is to match the right treatments to th…

This observational study follows 200 adults with chronic kidney disease and a type of heart failure (HFpEF), some taking SGLT2 inhibitors (flozins) and some not. Researchers will measure arterial stiffness, heart function, and kidney decline over time to see if flozins are linked…

This observational study tests a new device (eMyosound LYRA) that uses sound waves to measure stiffness in the heart and liver. Researchers will compare 150 people—some with heart failure, some with a rare heart condition called ATTR-CM, and some healthy volunteers. The goal is t…

This study follows 1,250 people with a type of heart failure called HFpEF, where the heart doesn't pump blood properly. Researchers will collect routine medical information to better understand why HFpEF develops, find new tests, and learn about life expectancy. No new treatments…

This study looks at what happens when people with a certain type of heart failure (HFpEF) stop taking beta-blockers for 4 weeks. Researchers will measure changes in heart function, exercise ability, and quality of life in 30 participants. The goal is to see if stopping this commo…

This study is tracking 1,000 adults with psoriasis to see how their skin condition relates to heart disease. Researchers will use blood tests and heart imaging to find early signs of heart problems. The goal is to better understand why people with psoriasis have higher rates of h…

This study looks at how blood flow in the heart's small vessels and body composition (muscle vs. fat) affect exercise ability in people with a type of heart failure called HFpEF. Researchers will measure heart blood flow using ultrasound and body composition with a special scale,…