Cardiology
Heart & circulation clinical trials
Heart disease, blood pressure, and disorders of the blood vessels and circulation. We’re tracking 9,626 recruiting studies in this area right now.
By phase
- Not applicable7,647
- Phase 4471
- Phase 2470
- Phase 3439
- Phase 1350
- Phase 1/Phase 2161
- Phase 2/Phase 388
Top conditions
- Stroke798
- Heart Failure538
- Hypertension390
- Cardiovascular Diseases374
- Coronary Artery Disease361
- Multiple Myeloma328
- Atrial Fibrillation258
- Ischemic Stroke190
- Atrial Fibrillation (AF)154
- Acute Ischemic Stroke138
- Pulmonary Hypertension105
- Myocardial Infarction96
- Congenital Heart Disease83
- Peripheral Arterial Disease80
- Stroke, Ischemic77
- Aortic Valve Stenosis76
- Acute Coronary Syndrome74
- Obesity74
Leading sponsors
- Mayo Clinic93
- Assistance Publique - Hôpitaux de Paris88
- National Taiwan University Hospital67
- China National Center for Cardiovascular Diseases60
- Second Affiliated Hospital, Zhejiang University, School of Medicine57
- Beijing Tiantan Hospital53
- Insel Gruppe AG, University Hospital Bern49
- Massachusetts General Hospital49
- Yonsei University48
- Johns Hopkins University45
Where studies are running
- California449
- Alabama195
- Arizona183
- Massachusetts174
- New York165
- Florida141
- Texas122
- Maryland119
- Minnesota118
- Illinois111
Recruiting studies9,626 total
- NCT07211282Recruiting
Activity tracking for late-stage cardiac rehab
This trial uses a smartphone app to monitor and guide your physical activity during the final phase of cardiac rehab. It aims to help you safely stay active and improve your recovery.
Edegem, AntwerpAges 18 years+ - NCT07205692Recruiting
Heart health and multiple conditions after kidney transplant
This study looks at how common heart problems and other health conditions affect kidney transplant patients over time. Researchers hope to learn how to better manage these risks.
Derby, DerbyshireAges 18 years+ - NCT07208669Recruiting
Treating high blood pressure in the hospital
This trial tests if treating high blood pressure in hospital patients can improve outcomes. If you are on a general medical unit and have very high blood pressure, this study may help understand the best approach.
Cleveland, OhioAges 18 years+ - NCT07204834Enrolling by invitation
Physical activity program for heart failure
This study tests a home-based physical activity program for people with heart failure. The program is designed to be safe and easy to follow, using a smartphone app to guide you, and may help you feel stronger and more active.
GranadaAges 18 years+ - NCT07211529Recruiting
Nerve block during chest surgery to reduce complications
This trial tests whether a numbing injection near the spine (paravertebral block) given during keyhole chest surgery can lower the risk of problems after surgery. It might help patients recover more comfortably.
Wuhan, HubeiAges 18–80 - NCT07210671Recruiting
Study on treating vein clots in cancer patients
This study looks at how to best treat blood clots in veins near the skin in people who also have active cancer. It will compare different treatment options to find what works best and is safest for you.
AmiensAges 18 years+ - NCT07205757RecruitingPhase 4
Lidocaine added to Custodiol for heart bypass surgery
This study tests whether adding lidocaine to the standard heart preservation solution (Custodiol) helps protect the heart during coronary artery bypass surgery. If you are scheduled for elective bypass surgery, this trial might be relevant to you.
Al Fayyum, Faiyum GovernorateAges 18 years+ - NCT07207603Enrolling by invitation
Cardiovascular risk study in Milano-Bicocca area
This study looks at heart disease risk factors in people living near the University of Milano-Bicocca. It helps researchers understand how common these risks are in the local community.
MilanAges 25 years+ - NCT07208019Recruiting
Electroacupuncture for memory and thinking after stroke
This study tests whether electroacupuncture (using tiny electric pulses through thin needles) can help improve memory, focus, and thinking after a stroke. If you have mild to moderate thinking problems after a stroke, this treatment may help support your recovery.
Hangzhou, ZhejiangAges 35–80 - NCT06926959Recruiting
Tricuspid regurgitation risk model study
This study aims to develop a risk model for tricuspid regurgitation, a condition where the heart valve doesn't close properly. It may help doctors better understand and treat this condition.
Guangzhou, GuangdongAges 18 years+ - NCT01218776Recruiting
Survey study for people with acute heart symptoms
This study is an international survey about acute coronary syndromes, which are sudden signs of heart-related problems. Your answers can help researchers better understand symptoms and care needs after these events.
Bologna, Emilia-RomagnaAges 18 years+ - NCT04735835Recruiting
Personalized diet testing using ZOE app and blood samples
This trial studies how different food compositions affect your body, using the ZOE testing program plus meals you eat and blood samples you collect. It may help you learn more about what foods work best for you, especially if you have a long-term health condition.
Needham, MassachusettsAges 18 years+ - NCT06929169RecruitingPhase 2
SGLT2 inhibitor heart health study in dialysis patients
This study tests whether a medicine called an SGLT2 inhibitor (a type of diabetes drug also used for heart failure) affects the heart and blood vessels in people with kidney failure who are on dialysis. It will help doctors understand if this medicine is safe and helpful for dialysis patients.
Buenos Aires, Buenos AiresAges 18–70 - NCT04016649Recruiting
Study measures how leg veins move and respond
This study measures the properties of human saphenous and popliteal veins. If you’re having certain lower-leg procedures, your care team may collect information to better understand vein function and support future treatment.
Limerick, LimerickAges 18 years+ - NCT05802706Recruiting
Study of artery plaque tissue during surgery
This study looks at artery plaque tissue removed during a routine operation (endarterectomy) to better understand diseased vessel changes. You may be able to join if plaque tissue is part of your planned surgery and you can consent.
Limerick, LimerickAges 18 years+ - NCT05974462RecruitingPhase 3
Steroids for mild heart inflammation with weaker pumping
This trial tests whether a course of steroid medicine can improve outcomes in people with recently started myocarditis (heart muscle inflammation) and mildly reduced heart pumping. It compares steroids versus placebo (inactive treatment) to see if steroids help the heart recover and prevent worsening.
Edegem, AntwerpAges 18–69 - NCT06303960RecruitingEarly Phase 1
Brain stimulation for chronic stroke arm recovery
This early-phase trial tests whether brain stimulation (deep brain stimulation in the cerebellum or vagus nerve stimulation) can help improve arm and hand movement in people who had a stroke 1 to 3 years ago.
Jinan, ShandongAges 30–75 - NCT06931574Recruiting
Comparing two stent methods for complex heart branch blockages
This trial compares two ways of placing stents in complex blockages in heart artery branches (smaller arteries branching off main ones). It aims to see which technique works better for this specific type of blockage.
IstanbulAges 18 years+ - NCT04500756RecruitingPhase 2
Metformin to slow abdominal aortic aneurysm growth
This trial tests whether metformin, a common diabetes medicine, can slow the growth of an abdominal aortic aneurysm (a bulging area in the main artery in your belly). If you have a small aneurysm, this medicine might help keep it from getting bigger and reduce your risk of needing surgery.
Stanford, CaliforniaAges 50–95 - NCT03586518Recruiting
Non-contrast heart MRI test in dialysis patients
This trial checks whether a new kind of heart MRI (done without contrast dye) can help doctors see heart changes in people receiving hemodialysis. It may help improve how heart health is measured in dialysis care, especially for people with limited time.
Leicester, LeicestershireAges 18 years+ - NCT06863571RecruitingPhase 3
Early medication combo to reduce swelling after stroke
This trial tests a combination of medicines given early after a large ischemic stroke to reduce brain swelling. It may help people who have had a stroke in the middle cerebral artery within the last 3 days and have a large area of brain damage.
Hangzhou, ZhejiangAges 18 years+ - NCT05956457Recruiting
Using wearable and PRO check-ins for relapsed myeloma
This study uses your self-reported symptoms (PRO) and wearable/device data to help improve care for people with relapsed multiple myeloma who are starting new treatment. It may help by providing insights about how you’re doing during therapy—without changing your cancer treatment in a study-specific way.
Seattle, WashingtonAges 18 years+ - NCT07196397Recruiting
Polish Registry of Heart Nerve Procedures
This registry tracks people who have had or plan to have a procedure that changes the nerves controlling heart rate, such as cardioneuroablation. It aims to better understand and treat conditions like inappropriate tachycardia, POTS, and fainting spells.
RzeszówAges 18 years+ - NCT07196930Recruiting
Valvular heart disease in women registry
This study is a registry that collects data on women with valvular heart disease (heart valve problems). It aims to better understand how these conditions affect women and improve their care. You may join if you have a heart valve condition and are treated at a participating center.
AswānAges 18 years+
Common questions
- How many heart & circulation clinical trials are recruiting?
- Clin2 is tracking 9,626 recruiting cardiology studies from the U.S. registry right now, out of 14,734 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
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- 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.