Cardiology
Heart & circulation clinical trials
Heart disease, blood pressure, and disorders of the blood vessels and circulation. We’re tracking 9,973 recruiting studies in this area right now.
By phase
- Not applicable7,957
- Phase 2481
- Phase 4480
- Phase 3447
- Phase 1360
- Phase 1/Phase 2162
- Phase 2/Phase 386
Top conditions
- Stroke843
- Heart Failure565
- Hypertension399
- Cardiovascular Diseases390
- Coronary Artery Disease373
- Multiple Myeloma333
- Atrial Fibrillation268
- Ischemic Stroke200
- Atrial Fibrillation (AF)140
- Acute Ischemic Stroke138
- Myocardial Infarction101
- Pulmonary Hypertension100
- Stroke, Ischemic86
- Congenital Heart Disease85
- Peripheral Arterial Disease83
- Acute Coronary Syndrome82
- Obesity80
- Aortic Valve Stenosis79
Leading sponsors
- Mayo Clinic94
- Assistance Publique - Hôpitaux de Paris91
- National Taiwan University Hospital74
- China National Center for Cardiovascular Diseases59
- Beijing Tiantan Hospital52
- Riphah International University51
- Second Affiliated Hospital, School of Medicine, Zhejiang University51
- Massachusetts General Hospital50
- Insel Gruppe AG, University Hospital Bern49
- Johns Hopkins University47
Where studies are running
- California461
- Alabama197
- Massachusetts183
- Arizona173
- New York161
- Florida145
- Maryland120
- Minnesota120
- Illinois119
- Texas118
Recruiting studies9,970 total
- NCT04592445Recruiting
Nerve ablation for right-sided symptoms in HFpEF heart failure
This trial tests a procedure to “turn off” the right greater splanchnic nerve to improve symptoms in people with HFpEF (heart failure with preserved pumping function). If successful, it may reduce shortness of breath and fluid congestion in daily life.
Birmingham, AlabamaAges 40 years+ - NCT07433504Recruiting
Tricuspid valve clipping for leaky valve
This trial tests a new device that clips the tricuspid valve to stop blood from flowing backward. It is for people with severe tricuspid regurgitation (a leaky valve) who still have symptoms despite medical treatment.
ShanghaiAges 18 years+ - NCT06362538Recruiting
Heart health prevention program
This trial tests a program to help prevent heart problems in people who have not had a heart attack or stroke. It is for adults aged 30 and older.
Cotignola, RavennaAges 18–30 - NCT06370182Recruiting
New catheter for clot removal in disabling stroke
This trial tests a new catheter device (ANA Funnel) for removing large blood clots from the brain in people having a disabling stroke. The goal is to see if it safely removes clots better than standard treatment.
Jacksonville, FloridaAges 22–85 - NCT06377761Recruiting
Qishen granules for heart failure with preserved pumping function
This trial tests a Chinese herbal medicine called Qishen Granules for people with heart failure who still have a normal pumping ability (ejection fraction 50% or higher). It may help reduce symptoms and improve heart function.
Guangzhou, GuangdongAges 18–85 - NCT06342492Recruiting
Comparing two pacing methods for lead failure in heart failure
This study compares two ways to fix a failed lead in a heart failure pacemaker: placing a new lead on the outside of the heart or using the heart's own electrical system. It follows people whose CRT lead stopped working and was replaced, to see which method works best.
Overland Park, KansasAges 18 years+ - NCT04737317Recruiting
Check criteria to diagnose cardiac sarcoidosis
This study tests how doctors can best tell whether someone has cardiac sarcoidosis, a condition where inflammation affects the heart. It may help you get a more accurate diagnosis using expert guidelines and special heart tests, and it groups patients as proven, probable, or unlikely.
LeipzigAges 18 years+ - NCT06343298RecruitingPhase 2
Testing MANP for hard-to-control high blood pressure
This trial tests a new drug called MANP for people whose blood pressure stays high despite taking three or more different types of blood pressure medications. The goal is to see if MANP is safe and effective in lowering blood pressure.
Little Rock, ArkansasAges 18–80 - NCT03582709Enrolling by invitation
Study how sitting time affects kids’ thinking and heart health
This study looks at how much children sit each day and how it relates to thinking skills and cardiovascular (heart and blood vessel) health. It may help researchers understand which lifestyle patterns are linked to better or worse health outcomes in children.
Ages 7–12 - NCT06390423Recruiting
Leg raise and fluid test for heart response in shock
This trial tests a simple bedside test (raising your legs and giving a small amount of fluid) to see how well your heart responds. It is for patients in the ICU with vasodilatory shock and severe lung injury who are on a ventilator.
Saint Cloud, MinnesotaAges 30–90 - NCT06907017Recruiting
CorWave left heart pump first-in-human study
This trial tests a new left ventricular assist device (LVAD) for people with advanced heart failure who are not responding to standard treatments and are eligible for a heart transplant. The pump helps the heart circulate blood.
Sydney, New South WalesAges 18–75 - NCT06149195Enrolling by invitation
Heart scan for managing heart failure
This trial tests a special heart scan (18F-MFBG) to see if it can help doctors better manage heart failure. You may qualify if you have chronic heart failure with a weak heart pump and are planning to get a defibrillator.
Chengdu, SichuanAges 18–80 - NCT05885230Recruiting
Pain relief after heart surgery: nerve block vs lidocaine drip
This trial compares two ways to manage pain after open-heart surgery: an ultrasound-guided nerve block (PIFB) versus lidocaine given through a vein. The goal is to see which method works better and helps you recover more comfortably.
Banī Suwayf, e\EYGPTAges 18–75 - NCT07660679Recruiting
Carotid ultrasound before liver transplant surgery
This study looks at whether measuring the thickness of the carotid artery (the main artery in the neck) before a planned liver transplant can help doctors predict and manage blood flow changes during surgery. It may help patients get safer care during their transplant.
DiyarbakırAges 18 years+ - NCT06447740Recruiting
Stent vs. medication for narrowed kidney artery
This trial compares placing a tiny mesh tube (stent) to open the narrowed kidney artery versus continuing blood pressure medicines alone. It is for people whose high blood pressure is hard to control even with multiple medications and who have a blockage in the kidney artery that can be treated.
Beijing, Beijing MunicipalityAges 18 years+ - NCT06344910Recruiting
Study on messaging heart failure doctors in Amsterdam
This trial tests if sending reminders to doctors can improve care for people with heart failure with reduced pumping function. It aims to help patients get the best treatments.
AmsterdamAges 18 years+ - NCT07158697Recruiting
WeChat lifestyle program for cardiometabolic health
This study tests a health coaching program delivered through WeChat to help people with multiple heart and metabolic conditions (like high blood pressure, diabetes, and obesity) make healthier lifestyle choices. If you have two or more of these conditions and use WeChat, this program may help you better manage your health.
Suzhou, JiangsuAges 18 years+ - NCT07648446Recruiting
Learning About Pulses and Gut Health in Children
This study teaches children ages 6–13 about pulses (beans, lentils, chickpeas) and how they affect gut health. Researchers want to understand whether eating pulses helps children's digestive systems work better.
Tallahassee, FloridaAges 6–13 - NCT06324396RecruitingPhase 1
Improving drug dosing for single ventricle patients with liver disease
This trial studies how the drugs sildenafil and pravastatin work in people with a single ventricle heart condition who have had the Fontan surgery and may have related liver problems. The goal is to find the best doses based on liver function.
Kansas City, MissouriAges 8 years+ - NCT06405516Recruiting
Platelet function after heart surgery
This study watches how well platelets (cells that help blood clot) work in people who have high-risk heart surgery using a heart-lung machine for more than 2 hours. The goal is to learn more about bleeding risks after surgery.
BernAges 18 years+ - NCT06327308RecruitingPhase 1
MRI study for heart health in liver transplant candidates
This study uses a special heart MRI to check for a heart condition called cirrhotic cardiomyopathy in people waiting for a liver transplant. The results may help doctors better understand and treat heart problems in patients with cirrhosis.
BesançonAges 18–70 - NCT07698964Recruiting
CARE: A program to build resilience and heart health
This study tests a program called CARE designed to help women manage stress and reduce heart disease risk. Participants will learn skills to build resilience and improve their overall well-being.
Edinburg, TexasAges 18–49 - NCT06871514Recruiting
Decision support for managing heart disease risk
This trial tests a decision-support tool to help manage cardiovascular risk in people with established heart or blood vessel disease. It aims to improve treatment plans and outcomes.
AlkmaarAges 40–80 - NCT06161987Recruiting
Early rehab for acute heart failure
This study tests whether starting a tailored exercise and education program early in the hospital can help people with acute heart failure recover faster and feel better. It includes walking, breathing exercises, and support to get you back to daily activities.
Guangzhou, GuangdongAges 18–80
Common questions
- How many heart & circulation clinical trials are recruiting?
- Clin2 is tracking 9,973 recruiting cardiology studies from the U.S. registry right now, out of 15,205 we cover in this area in total.
- What does “Heart & circulation” cover here?
- Heart disease, blood pressure, and disorders of the blood vessels and circulation. We group each study into heart & circulation based on the conditions it studies, so you can scan the whole therapeutic area at once and drill into a specific condition.
- How do I find a heart & circulation trial near me?
- Use the search to filter heart & circulation studies by location and eligibility. Every Clin2 trial page explains the criteria in plain English and offers a short, optional pre-screen for a fit read — the study team makes the final decision.
Other specialties
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- Injuries & trauma
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Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov; specialty groupings are derived from each study’s conditions. Talk with your doctor about whether a specific trial is right for you.