Cardiology
Heart & circulation clinical trials
Heart disease, blood pressure, and disorders of the blood vessels and circulation. We’re tracking 9,609 recruiting studies in this area right now.
By phase
- Not applicable7,632
- Phase 4472
- Phase 2469
- Phase 3439
- Phase 1350
- Phase 1/Phase 2160
- Phase 2/Phase 387
Top conditions
- Stroke797
- Heart Failure534
- Hypertension388
- Cardiovascular Diseases373
- Coronary Artery Disease363
- Multiple Myeloma327
- Atrial Fibrillation259
- Ischemic Stroke190
- Atrial Fibrillation (AF)154
- Acute Ischemic Stroke139
- Pulmonary Hypertension104
- Myocardial Infarction97
- Congenital Heart Disease84
- Peripheral Arterial Disease79
- Stroke, Ischemic78
- Aortic Valve Stenosis76
- Obesity74
- Acute Coronary Syndrome73
Leading sponsors
- Mayo Clinic93
- Assistance Publique - Hôpitaux de Paris88
- National Taiwan University Hospital68
- China National Center for Cardiovascular Diseases60
- Second Affiliated Hospital, Zhejiang University, School of Medicine58
- Beijing Tiantan Hospital53
- Insel Gruppe AG, University Hospital Bern49
- Massachusetts General Hospital49
- Yonsei University48
- Johns Hopkins University45
Where studies are running
- California453
- Alabama196
- Arizona181
- Massachusetts173
- New York168
- Florida140
- Texas122
- Maryland118
- Minnesota117
- Illinois112
Recruiting studies9,609 total
- NCT04489199Recruiting
Join the Dijon stroke patient registry study
This study follows people who are already in the Dijon Stroke Registry and asks if they agree to participate. If you say yes, your information may be used to better understand stroke outcomes and care.
DijonAges 18 years+ - NCT02884271Recruiting
Study CPR during surgery when the heart stops
This trial looks at cardiopulmonary resuscitation (CPR) provided right in the operating room when a patient’s heart stops. It may help improve how emergency care is delivered during surgery.
IzmirAges Any age - NCT07864259Recruiting
Heart and blood pressure risks after breathing tube placement in the ICU
This study looks at heart and blood pressure problems that can happen when a breathing tube is placed in intensive care. It may help doctors make intubation safer for patients.
StrasbourgAges 18 years+ - NCT07869537RecruitingPhase 4
Simplified tranexamic acid dosing for major bleeding after injury
This trial tests a simpler way to give a drug called tranexamic acid to trauma patients with heavy bleeding. The drug helps blood clot and may reduce bleeding, but it is important to check if the simplified approach is as safe as the standard one.
Hangzhou, ZhejiangAges 18–80 - NCT07860333Recruiting
Moving after stroke treatment
This trial tests whether starting mobilization earlier after a stroke procedure improves recovery. It may help patients get moving sooner and regain function faster.
TampereAges 18 years+ - NCT07856641Recruiting
Timing of blood thinner shots in trauma patients
This study looks at how the time of day you receive your blood thinner shot affects how well it works in preventing blood clots in the hospital. It may help doctors find the best time to give this medicine to trauma patients.
Houston, TexasAges 18–80 - NCT06264427Recruiting
Study of metabolism issues in Greenland
This study looks at the genes and physical traits of people in Greenland with type 2 diabetes or severe obesity. It aims to better understand these conditions to improve care.
Nuuk, SermersooqAges 18 years+ - NCT06279026Recruiting
Testing UTAA17 for advanced multiple myeloma
This trial tests a new treatment called UTAA17 that targets a protein on myeloma cells. It may be an option for people whose multiple myeloma has not responded to several prior treatments.
Suzhou, JiangsuAges 18 years+ - NCT05638841Recruiting
Study of repeat atrial fibrillation risk after ablation
This study follows adults who have had a procedure to treat an irregular heartbeat, to understand who is more likely to have it return. It may help doctors predict risk and plan follow-up after the procedure.
BeijingAges 18 years+ - NCT05775445Recruiting
People with very blocked or very normal coronary arteries
This study compares people with very severe coronary artery disease to those without significant disease, using heart imaging data. It aims to understand what differs between extreme cases and how that information could guide future care.
SingaporeAges 21–99 - NCT06109155RecruitingPhase 4
Comparing medications to reduce bleeding in heart surgery
This trial tests two medicines—ACT (a blood thinner) and tranexamic acid (a medicine to reduce bleeding)—to see which is better at controlling bleeding during heart surgery. It is for adults having planned heart surgery with a heart-lung machine.
TaichungAges 18 years+ - NCT07861035RecruitingPhase 1
Stem cell therapy during heart bypass surgery for weakened heart muscle
This study tests a new treatment using donor stem cells injected into the heart during scheduled bypass surgery. The goal is to see if these cells help improve heart function in people with heart failure due to blocked arteries and a weak heart pump.
Seongnam-si, Gyeonggi-doAges 19–85 - NCT07861685Recruiting
Recovery aid after severe preeclampsia
This study tests whether a medicine called furosemide (a water pill) helps women recover faster after giving birth with severe preeclampsia. If you join, you'll take the medicine or a placebo to see if it improves your recovery.
Peshawar, Khyber PakhtunkhwaAges 18–45 - NCT03523416Recruiting
Shunt device for heart failure with reduced pumping function
This trial studies a small device placed in the heart to create a passage that may help relieve pressure and improve symptoms in people with heart failure and a weak pumping function. It aims to see if the device is safe and helpful for daily life.
La Jolla, CaliforniaAges 18 years+ - NCT05248165Recruiting
Heart artery disease patients having stent placement
This study enrolls adults with blocked heart arteries who need a procedure called PCI (stent placement). It collects real-world information to help understand and improve care for people like you.
NaplesAges 18 years+ - NCT05235555Recruiting
TAVI registry for people with severe aortic valve disease
This registry follows people with severe aortic valve narrowing (and sometimes a worn-out valve) who are considered good candidates for TAVI, a valve-replacement procedure. It helps doctors better understand outcomes and care over time.
NaplesAges 55–100 - NCT07865377Recruiting
Resveratrol supplement for heart disease in postmenopausal women
This study tests whether a supplement called resveratrol can positively affect estrogen-related markers in postmenopausal women with stable coronary artery disease. It may help understand how this supplement could support heart health.
São Paulo, São PauloAges 45–70 - NCT07870044Recruiting
Virtual reality to boost body awareness
This study uses virtual reality to help people feel more connected to their body. It may benefit healthy people or those with spinal cord injury or stroke.
Bosisio Parini, LeccoAges 12–50 - NCT07871201Recruiting
Predicting blood pressure medication needs after heart surgery
This study checks if a simple measurement from your artery line can predict whether you'll need medication to keep your blood pressure stable right after heart surgery. The goal is to help doctors tailor care so you stay safer during recovery.
GaziantepAges 18–80 - NCT06273761Recruiting
Medication management service for diabetes and high blood pressure
This study tests a medication management service for people with type 2 diabetes and/or high blood pressure who take many medications. It aims to help you better manage your medicines and avoid urgent medical visits.
Hong KongAges 18 years+ - NCT06278844Recruiting
Pacing method to improve exercise in heart failure
This study tests a new way to pace the heart in people with heart failure who need a pacemaker. It aims to see if this pacing method helps them exercise more easily.
Edegem, AntwerpAges 18 years+ - NCT05731830Recruiting
Study how air pollution relates to Takotsubo heart episodes
This study looks at whether levels of air pollution are linked to Takotsubo syndrome (a temporary heart condition). It may help doctors understand what environmental factors could affect episodes and timing.
RomeAges 18 years+ - NCT05714241Recruiting
Blood tests to study heart pain with blocked-unblocked arteries
This study looks at blood “biomarkers” and platelet function to better understand INOCA (heart-related chest pain despite no major artery blockage). You may be eligible if you have INOCA and are already taking aspirin, and if you haven’t taken certain blood-thinner or platelet-altering medicines recently.
RomeAges 18 years+ - NCT05714319Recruiting
Testing acetylcholine during heart artery checks for INOCA/MINOCA
This trial studies what acetylcholine testing during a coronary angiogram (CAG) can show in people with INOCA or MINOCA. It may help doctors better understand certain “spasm” or blood-vessel function problems that can cause chest pain or heart-attack-like symptoms without a blocked artery.
RomeAges 18 years+
Common questions
- How many heart & circulation clinical trials are recruiting?
- Clin2 is tracking 9,609 recruiting cardiology studies from the U.S. registry right now, out of 14,617 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.