Cardiology
Heart & circulation clinical trials
Heart disease, blood pressure, and disorders of the blood vessels and circulation. We’re tracking 9,981 recruiting studies in this area right now.
By phase
- Not applicable7,957
- Phase 2482
- Phase 4481
- Phase 3449
- Phase 1361
- Phase 1/Phase 2164
- Phase 2/Phase 387
Top conditions
- Stroke841
- Heart Failure566
- Hypertension400
- Cardiovascular Diseases389
- Coronary Artery Disease370
- Multiple Myeloma332
- Atrial Fibrillation267
- Ischemic Stroke201
- Atrial Fibrillation (AF)141
- Acute Ischemic Stroke138
- Myocardial Infarction100
- Pulmonary Hypertension100
- Congenital Heart Disease86
- Stroke, Ischemic85
- 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
- California466
- Alabama197
- Massachusetts182
- Arizona173
- New York162
- Florida144
- Maryland120
- Minnesota120
- Illinois118
- Texas117
Recruiting studies9,978 total
- NCT06440408RecruitingPhase 1
Measuring blood flow in infant lung veins
This study uses special MRI scans to measure blood flow in the veins of the lungs in babies, aiming to help doctors better understand and treat conditions like chronic lung disease or abnormal vein connections.
Philadelphia, PennsylvaniaAges Up to 18 years - NCT07621367Recruiting
Gut oxygen therapy for bowel problems from low oxygen
This trial tests a treatment that delivers oxygen directly to the gut through a small tube. It is for people with long-term heart failure or sleep apnea who also have belly pain, bloating, constipation, or diarrhea.
Nanjing, JiangsuAges 18 years+ - NCT06325800Recruiting
Heart and blood vessel health registry
This study collects information from people at risk for heart disease, stroke, or kidney problems to better understand how to prevent these conditions. If you join, you'll be helping doctors learn more about how to keep blood vessels healthy.
Santiago de Compostela, A CoruñaAges 18 years+ - NCT07746947Recruiting
Stroke treatment study for medium-sized vessel blockages
This study looks at how well a procedure to remove blood clots from medium-sized brain arteries works for people who have had a severe stroke. It may help improve recovery by treating blockages that are not in the largest arteries.
Indianapolis, IndianaAges 18–85 - NCT05807269Recruiting
Stroke prevention and rehabilitation program in Uganda
This program focuses on helping people who have had a stroke, or who have stroke risk factors, through prevention and rehabilitation support. It may help you improve recovery and lower the chance of another stroke.
HoimaAges 13 years+ - NCT07057323Enrolling by invitation
Coronary sinus reducer for heart failure with preserved pumping function
This trial tests a device placed in a heart vein to improve symptoms in people whose heart pumps normally but still causes shortness of breath and fatigue. The device may help relieve pressure in the heart and improve daily life.
Rochester, MinnesotaAges 18 years+ - NCT05507879Recruiting
Breast cancer heart monitoring to predict heart damage risk
This trial studies how a blood test marker (TRPC6) may help predict and prevent heart muscle damage and heart failure related to some breast cancer medicines. You may join if you’re starting or have received treatment that can stress the heart, or if you already have signs of treatment-related heart problems.
Gainesville, FloridaAges 18 years+ - NCT06448637Recruiting
Drug balloon vs. medicated stent for large heart arteries
This study compares two treatments for new blockages in large heart arteries: a drug-coated balloon (a balloon that releases medicine) versus a drug-coated stent (a small mesh tube). The goal is to see which one better helps the artery stay open and function normally.
BarcelonaAges 18 years+ - NCT07375602Recruiting
AI tool to predict complications after VSD closure in children
This study uses artificial intelligence to predict complications in children who have had a specific type of hole in the heart (called a perimembranous ventricular septal defect) repaired with a catheter-based procedure. The goal is to help doctors better identify which children might have problems after the procedure.
Shanghai, Shanghai MunicipalityAges Up to 18 years - NCT07719075Recruiting
Norepinephrine dose for low blood pressure during emergency belly surgery
This trial tests whether a 5 microgram or a 10 microgram dose of norepinephrine works better to treat low blood pressure that happens after starting anesthesia or during emergency abdominal surgery. It may help doctors choose the right dose to keep your blood pressure stable.
Cairo, Cairo GovernorateAges 21–65 - NCT07290504Recruiting
Tourniquet Release Methods for People with High Blood Pressure
This study tests two ways of releasing a tourniquet (a pressure cuff) after arm surgery to see which keeps blood pressure more stable in people with controlled high blood pressure. If you are having arm or hand surgery with a tourniquet, you may be able to join.
CairoAges 18–65 - NCT03222999Recruiting
Study of out-of-hospital cardiac arrest patients in Korea
This trial is for people whose heart stopped outside the hospital and who received emergency resuscitation, where emergency doctors believed it was caused by a heart problem. The goal is to learn how to better treat or manage this type of cardiac arrest.
SeoulAges Any age - NCT06166862Recruiting
Mirroring and imagining movements after stroke
This study tests if watching and imagining movements can help people who had a stroke within the last year walk better and move easier.
Karaman, KaramanAges 18–65 - NCT07467668Recruiting
Iron infusion for heart failure patients with low iron
This trial tests whether giving intravenous iron to adults hospitalized with heart failure and low iron levels helps improve their health. You may be eligible if you have heart failure with reduced pumping function and low iron stores.
Pleasanton, CaliforniaAges 18 years+ - NCT05296447Enrolling by invitationPhase 2
Long-term safety study for diabetic retinopathy gene therapy
This study follows people who already received an injection of RGX-314 (an experimental gene therapy) in a previous clinical trial for diabetic retinopathy, with or without swelling in the macula. It checks the long-term safety and how the treatment works over time.
Phoenix, ArizonaAges Any age - NCT06979362RecruitingPhase 2
Study of CDR132L for heart failure with preserved pumping function
This trial tests if CDR132L can improve heart structure and function in people with a type of heart failure where the heart pumps normally but is stiff and thickened. It may help if you have heart failure with preserved ejection fraction and a thickened heart muscle.
Birmingham, AlabamaAges 40–84 - NCT07566624Recruiting
Registry study of Hydra heart valve replacement procedure
This study tracks patients who receive a Hydra artificial heart valve to replace a severely narrowed aortic valve. Researchers will follow your progress to understand how well the device works and its safety in real-world use.
Fuencarral-El PardoAges 18 years+ - NCT06232044RecruitingPhase 1/Phase 2
Testing a new drug combo for returning multiple myeloma
This trial tests a combination of two approved drugs (lenalidomide and dexamethasone) plus an experimental drug (iberdomide) for people with multiple myeloma that has returned or stopped responding to treatment. It aims to see if this new combination can help control the disease.
Ames, IowaAges 18 years+ - NCT07349121Recruiting
Testing the Farapulse and Watchman devices together
This trial is for people who need both a special heart treatment called pulsed field ablation (FARAPULSE) and a device to close off a small pouch in the heart (WATCHMAN FLX Pro or WATCHMAN FLX) to prevent strokes. The study will see how well both procedures work when done together.
AalstAges 18 years+ - NCT07098286Enrolling by invitation
Home rehab after stroke
This study tests a high-intensity home-based rehabilitation program for people who have had a stroke. It aims to help you recover strength and function in the comfort of your own home.
Durham, North CarolinaAges 18 years+ - NCT06669247RecruitingPhase 1/Phase 2
Study of REGN7945 plus linvoseltamab for relapsed or refractory multiple myeloma
This study tests a new combination of two drugs (REGN7945 and linvoseltamab) for people with multiple myeloma that has come back or not responded to at least 3 prior treatments. The goal is to see if the combination is safe and effective, and it may offer a new option if other therapies have stopped working.
Sydney, New South WalesAges 18 years+ - NCT07161830Recruiting
Skin repair treatment for diabetic foot ulcers
This study tests a special skin repair matrix for diabetic foot ulcers that are not healing well with standard care. The treatment may help the wound close and heal faster.
Evergreen Park, IllinoisAges 18 years+ - NCT07050355Recruiting
Brain stimulation and exercise for depression after stroke
This study tests whether combining brain stimulation with aerobic exercise can help treat depression and improve walking in people who have had a stroke at least a year ago. If you have ongoing depressive symptoms and some leg weakness from your stroke, this treatment may help you feel better and walk more easily.
Durham, North CarolinaAges 21 years+ - NCT07744009Recruiting
Awake breathing support for heart valve surgery
This trial tests a new anesthesia method that lets you breathe on your own during heart valve surgery, instead of using a breathing tube. It aims to see if this approach is safer and helps you recover faster than standard anesthesia.
Guangzhou, GuangdongAges 18 years+
Common questions
- How many heart & circulation clinical trials are recruiting?
- Clin2 is tracking 9,981 recruiting cardiology studies from the U.S. registry right now, out of 15,236 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
- Cancer
- Brain & nervous system
- Hormones & metabolism
- Mental health
- Digestive system
- Lungs & breathing
- Immune system & allergy
- Women’s health & pregnancy
- Skin
- Blood & lymphatic
- Kidney & urinary
- Infections
- Genetic & congenital
- Bones, joints & muscles
- Pain
- Injuries & trauma
- Mouth & dental
- Eyes & vision
- Ear, nose & throat
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.