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
- NCT07270757Recruiting
Pre-ablation exercise program for atrial fibrillation
This study tests whether a short exercise and education program before a first-time ablation for atrial fibrillation improves your recovery and heart fitness. It's for people with mild or no heart failure symptoms and a well-pumping heart.
Nanjing, Please SelectAges 18–70 - NCT07272798Recruiting
Heart confidence after pulmonary hypertension surgery
This study looks at how confident patients feel about managing their heart health after surgery for chronic thromboembolic pulmonary hypertension. It may help doctors understand how to better support recovery.
Damascus, Rif-dimashq GovernorateAges Any age - NCT07273994RecruitingPhase 4
Comparing two amiodarone doses after heart shock treatment for atrial fibrillation
This trial tests two different ways of taking amiodarone (a heart rhythm medicine) to keep your heart in a normal rhythm after a procedure called electrical cardioversion. It's designed for people with persistent atrial fibrillation (a fast, irregular heartbeat lasting at least 7 days).
BarcelonaAges 18 years+ - NCT07275749RecruitingPhase 3
Acetyl-leucine for balance problems after a stroke
This trial tests if acetyl-leucine can help improve walking and balance in people who had a specific type of stroke in the back part of the brain. You may qualify if you had your first stroke there and have trouble with balance or walking.
Kafr ash ShaykhAges 18–80 - NCT07276490Recruiting
Pacemaker Study for Heart Block
This study tests how a pacemaker affects blood flow and heart health in people with heart block. It aims to see if special pacing settings can improve how the heart works.
Tallinn, HarjuAges 18–80 - NCT07277361Recruiting
Quality of life study for Fabry disease patients aged 65+
This study looks at the quality of life of people aged 65 and older with Fabry disease. It includes patients who are receiving specific treatment and those who are not, to compare their experiences.
Paris, FranceAges 65 years+ - NCT07270172Recruiting
Micronutrient study for type 1 diabetes complications
This study tests how a specific drug affects heart and kidney health in people with type 1 diabetes who already have some complications like kidney disease, heart problems, or obesity. It aims to find new ways to prevent further damage.
Aarhus NAges 40 years+ - NCT06892353Recruiting
AI eye screening for diabetic retinopathy
This trial tests a new AI-powered, do-it-yourself screening system for diabetic retinopathy. It may help find early signs of eye disease in people who haven't had an eye exam in the past year.
Hong KongAges 18 years+ - NCT06891599Recruiting
Blood test for clotting in sepsis and trauma ICU patients
This study is testing a special blood test called ROTEM to see how well it can predict bleeding problems in ICU patients with sepsis or severe trauma. It may help doctors give the right treatment faster.
StockholmAges 18 years+ - NCT06604117Recruiting
Probucol and statins for recent ischemic stroke
This trial tests whether adding probucol to statin therapy can help people who recently had an ischemic stroke caused by hardened arteries. The goal is to see if this combination works better than statins alone for preventing future strokes.
Xicheng District, Beijing MunicipalityAges 18 years+ - NCT03978377Recruiting
Checks heart and lung effects after chest radiation
This study looks at how chest radiation treatment affects the heart and lungs in people with certain lung or esophagus cancers. It may help doctors better predict and prevent these side effects during curative (aimed at cure) radiotherapy.
LeuvenAges 18 years+ - NCT06892886Recruiting
Virtual reality for arm rehab after stroke
This trial tests if immersive virtual reality can help people recover arm movement after a recent stroke. If you had a first stroke within the last month and still have arm weakness, this might be an option.
FerraraAges 18–80 - NCT06893926Recruiting
Cord blood S100B protein in growth-restricted newborns
This study measures a protein called S100B in umbilical cord blood to learn more about brain development in newborns with fetal growth restriction (FGR), a condition where a baby is smaller than expected. Understanding this protein could help doctors identify babies who may need extra support after birth.
WarsawAges 18 years+ - NCT04071015Recruiting
Tests a new blood pressure monitor after heart surgery
This study checks whether a non-invasive blood pressure device can measure blood pressure accurately in ICU patients right after cardiac surgery. It compares the new device to standard invasive monitoring through an arterial line or catheter.
Ramat GanAges 18 years+ - NCT05888467Recruiting
Exercise study for women at risk of pregnancy heart problems
This study looks at how physical activity affects the heart and blood-vessel health “profile” in women who have risk factors for a pregnancy condition (called GHD, related to preeclampsia risk). It may help researchers find safer or more helpful activity guidance before pregnancy.
Diepenbeek, LimburgAges 18–50 - NCT05333666Recruiting
Checking how blood NOAC levels relate to outcomes
This study looks at whether the amount of a blood thinner (NOAC) in your bloodstream is linked to health outcomes. It may help doctors better understand how to monitor and use these medicines safely.
Taipei, Please SelectAges 20 years+ - NCT06007339Recruiting
Study of a new device to close the vein after catheter procedures
This trial tests a new device called PerQseal® Elite that helps close the hole in the vein after a large catheter is used during heart or blood vessel procedures. It is for people who are already scheduled for a catheter-based procedure through a vein in the groin, and the device is designed to make the recovery easier and safer.
Rotterdam, RotterdamAges 19 years+ - NCT06076551Recruiting
Sex differences in small blood vessel problems of the heart
This study looks at how small blood vessels in the heart work differently in men and women who have chest pain but no major blockages in their main heart arteries. The goal is to better understand and treat these smaller vessel issues.
SeoulAges 20–80 - NCT06518317RecruitingPhase 3
Short vs Long Blood Thinner Use After TAVI
This trial compares a short course versus a longer course of antiplatelet medicine (blood thinners) after a TAVI procedure for aortic stenosis. It aims to see which approach is safer and more effective.
CaenAges 18 years+ - NCT06512571Recruiting
Heart changes in Fabry disease: an observational study
This study looks at people with Fabry disease, a genetic condition that can cause the heart muscle to thicken. Researchers want to understand how the heart's blood vessels change over time, which may help improve care for Fabry disease.
BeijingAges 18 years+ - NCT06378632Recruiting
Heart failure monitoring app study
This study tests a smartphone app that listens to your voice to detect early signs of heart failure worsening. It aims to help you avoid hospital stays by catching problems sooner.
Fairhope, AlabamaAges 22 years+ - NCT06528418Recruiting
Breath test to find lung diseases
This study uses a simple breath test to detect different lung diseases. By analyzing the chemicals in your breath, researchers hope to find a faster, non-invasive way to diagnose lung conditions. It may be an option if you have a known lung disease and have a recent CT scan.
Guangzhou, GuangdongAges 18–100 - NCT06718426Recruiting
Testing Fertitonex for varicocele and infertility
This study tests if a medicine called Fertitonex can improve sperm quality in men who have varicocele (enlarged veins in the scrotum) and are having trouble getting their partner pregnant for the first time.
Shebin El-Kom, MenoufiaAges 18 years+ - NCT06846086RecruitingPhase 3
Melatonin for heart muscle protection
This trial tests if adding melatonin to standard heart medication helps protect the heart muscle in people with cardiomyopathy. If you are stable on your current heart meds, you may be able to join.
Dakahlia, Egypt, MansouraAges 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
- 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.