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
- NCT05662293Recruiting
Study of heart muscle weakness caused by abnormal heart rhythms
This study looks at a condition where an abnormal heart rhythm can weaken the heart muscle (arrhythmia-induced cardiomyopathy). You may be asked questions, have heart tests reviewed, and help researchers better describe who is affected and how it develops.
BaselAges 18 years+ - NCT06230198Recruiting
Effect of a blood-saving technique on transfusions after heart surgery
This trial tests whether a technique called retrograde autologous priming (using the patient's own blood to prepare the heart-lung machine) can reduce the need for blood transfusions during heart surgery. It is looking at hospitals and surgical teams, not individual patients, so it's not a typical trial you can join directly.
Winnipeg, ManitobaAges 10–110 - NCT06241482Recruiting
Enhanced recovery after brain surgery in intensive care
This study tests a special recovery program for people with serious brain injuries or strokes who need intensive care. The program focuses on helping you heal faster after surgery.
ShanghaiAges 18–75 - NCT06664528Recruiting
Heart health study for adults getting certain chemo
This study tracks the heart health of adults receiving chemotherapy that may affect the heart. It helps doctors understand how to better monitor and protect patients.
Rome, LazioAges 18 years+ - NCT07349004Recruiting
Migraine with aura and PFO study
This study looks at the link between migraine with aura and a small hole in the heart called PFO. It may help researchers understand what causes migraines in some people.
Bologna, BOAges 18 years+ - NCT06828575Recruiting
Testing AI models on artery pressure readings
This study tests how well artificial intelligence can analyze artery pressure waveforms during surgery. If you're having scheduled surgery and already need this monitoring, your data might help improve patient care.
IstanbulAges 18 years+ - NCT07348341Recruiting
Laser treatment for blocked heart arteries registry
This study collects information from patients with blocked heart arteries who receive a special laser treatment (ELCA) to open the blockage. It will help doctors understand how well this laser works in different situations.
MadridAges 18 years+ - NCT07350499Recruiting
Using Symphony or Prodigy to remove blood clots
This study tests how well the Symphony or Prodigy system works for removing blood clots from arteries or veins. You may qualify if you are 18 or older and scheduled for a procedure that uses one of these devices.
Huntsville, AlabamaAges 18 years+ - NCT07348458Recruiting
Kidney protective jacket trial
This trial tests a special jacket designed to protect a donor kidney before transplant. It may help the kidney work better after surgery.
Westmead, New South WalesAges 18 years+ - NCT07349797Recruiting
Transdermal GFR system to check kidney function in heart failure
This trial tests a sensor placed on the skin to measure kidney function in adults with heart failure. It may help understand how well the kidneys are working without repeated blood draws.
New York, New YorkAges 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+ - NCT07348640RecruitingPhase 3
Study of new MRI dye for blocked blood vessels
This trial tests a new MRI contrast dye (gadopiclenol) to see if it works as well as the standard dye for finding blocked or narrowed blood vessels. If you have symptoms of vascular disease, you may be able to join and help compare the two dyes.
Birmingham, AlabamaAges 18 years+ - NCT07350759Recruiting
Using a wearable to detect heart failure worsening
This study tests if a wearable device can spot early signs of heart failure getting worse. If you already use a heart monitor and have stable readings, you may help show how a non-invasive wearable could alert you sooner.
Tampa, FloridaAges 18 years+ - NCT06811519Recruiting
AI predicts heart function from ultrasound and body scans
This study uses artificial intelligence to predict how well your heart is pumping by looking at your heart ultrasound results and body composition (like body fat and muscle). The goal is to see if adding body composition data makes the AI predictions more accurate.
Yongin, Gyeonggi-doAges 20 years+ - NCT06857838Recruiting
Bypass surgery for symptomatic myocardial bridge
This trial tests whether bypass surgery is effective for people with a myocardial bridge (a heart muscle that arches over an artery) that still causes symptoms despite medication. It aims to see if surgery can improve symptoms and outcomes.
Xi'an, ShaanxiAges 18–80 - NCT07345325RecruitingPhase 3
Comparing antibiotic treatments for heart valve infections
This trial tests whether a treatment without rifampin works as well as one with rifampin for a type of heart valve infection caused by staph bacteria. It aims to find a simpler and safer option for patients with an infected artificial heart valve.
Aix-les-BainsAges 18 years+ - NCT07344012Recruiting
Parenting hopes in women with Turner syndrome
This study looks at women with Turner syndrome who wanted to become parents. It aims to understand what support they received and what happened with their parenting plans.
StrasbourgAges 18–40 - NCT07345338Enrolling by invitation
Genetic testing for non-ischemic heart muscle disease
This study offers genetic testing to adults with a type of heart muscle disease (non-ischemic cardiomyopathy or dilated cardiomyopathy) that is not caused by blocked arteries. The goal is to find genetic causes, which may guide treatment and family screening.
Calgary, AlbertaAges 18 years+ - NCT07344610Recruiting
Short-term high-dose statin therapy after stroke
This trial tests whether starting a high dose of a statin (a cholesterol-lowering medicine) soon after a stroke can improve your cholesterol levels. It is for people who have had a stroke or have significant narrowing of arteries in the brain or neck.
Shenyang, LiaoningAges 18 years+ - NCT07350564Recruiting
Comparing tight vs. usual blood pressure control after stroke clot removal
This trial tests whether keeping blood pressure very tightly controlled after a stroke clot removal (thrombectomy) is better than standard care. It may help people who have had an acute stroke from a large brain artery blockage and still have high blood pressure after the procedure.
Suzhou, JiangsuAges 18 years+ - NCT07347665Recruiting
Endovascular therapy for M2 segment stroke
This study tests whether a minimally invasive procedure to remove a blood clot from a specific branch of a brain artery (the M2 segment) helps people recover from a stroke better than standard care alone. It is for people who have had a moderate to severe stroke within the past 24 hours and could not get clot-dissolving medicine or it didn't work.
Nishinomiya, HyōgoAges 18–84 - NCT07349186Recruiting
Blood pressure monitoring during robot prostate surgery
This trial compares two ways to measure blood pressure during robot-assisted prostate surgery: a cuff on the arm (oscillometric) vs. a tiny tube in an artery (intraarterial). It aims to see if the cuff method is just as reliable, which could make monitoring simpler and less invasive.
Hamburg, Free and Hanseatic City of HamburgAges 18 years+ - NCT07348510Recruiting
Diuretic Effect of Aminophylline and Furosemide in Heart Surgery Patients
This study is testing if a combination of two medicines (aminophylline and furosemide) can help the kidneys produce more urine after heart surgery. It may help reduce fluid buildup and protect kidney function.
CairoAges 18–65 - NCT07347925Recruiting
Study of heart failure medicine before hospital
This trial tests if a specific heart failure pill, started before hospital care, helps improve short-term outcomes in people with weak heart muscles. It is for patients with a low pumping ability of the heart.
Al MansurahAges 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.
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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.