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
- NCT07848152Recruiting
Monitoring new heart devices
This study follows patients who receive a special new device for a heart condition, either to close a small hole in the heart or to repair a leaky heart valve. The goal is to see how safe and effective these devices are over time.
Lanzhou, GansuAges 18 years+ - NCT07849764Recruiting
Subcutaneous ICD suitability over time in arrhythmogenic cardiomyopathy
This study looks at whether a special type of defibrillator that sits under the skin is a good option for people with arrhythmogenic cardiomyopathy, a heart condition that can cause dangerous heart rhythms. It aims to help doctors decide who might benefit from this device and when.
São Paulo, São PauloAges 18 years+ - NCT07843004Recruiting
AI screening for undiagnosed heart valve disease
This study tests whether an artificial intelligence (AI) tool can help find people who have undiagnosed heart valve problems by analyzing their electrocardiogram (ECG) results. If you visit the emergency room and have an ECG, the AI might help identify if you need further heart tests.
New York, New YorkAges 40 years+ - NCT07847983Recruiting
Women's heart failure study: tracking first hospital visits
This study looks at women who are hospitalized for the first time with heart failure, to learn more about their health outcomes and what affects their recovery. By joining, you help researchers understand heart failure in women and may receive extra monitoring and support.
Santiago de Compostela, A CorunaAges 18 years+ - NCT07849335Enrolling by invitation
Stent techniques for complex heart artery branch blockages
This study compares two ways to place stents in complex blockages where heart arteries branch, to see which works better. It may help you if you have this type of blockage.
Rivoli, TurinAges 18 years+ - NCT07850284Recruiting
Text message symptom check-ins for blood cancer patients
This study uses text messages to check how you're feeling during cancer treatment. It may help your care team respond sooner to symptoms and improve your quality of life.
Rochester, MinnesotaAges 18 years+ - NCT07847788Recruiting
Using brain monitoring during gallbladder surgery
This study checks whether a special brain-monitoring device (entropy monitoring) can help anesthesiologists give just the right amount of anesthesia during gallbladder removal surgery. The goal is to see if this leads to using less anesthesia and a faster recovery after surgery.
IslamabadAges 18–60 - NCT07849738Recruiting
Genetic testing after sudden cardiac death
This study looks at the DNA of young people who died suddenly without a clear cause, to find inherited heart conditions. If a genetic cause is found, close family members can be tested to learn their own risk and get preventive care.
São Paulo, São PauloAges 5–50 - NCT07843849RecruitingPhase 4
Steroid treatment for diabetic macular edema
This study tests whether a steroid medication can help reduce swelling in the back of the eye caused by diabetic macular edema, a complication of type 2 diabetes. If you qualify, you may receive this treatment to potentially improve your vision.
Nashville, TennesseeAges 18 years+ - NCT07848828RecruitingPhase 4
Blood pressure and kidney study for prostate cancer treatment
This study looks at how a common prostate cancer treatment called androgen deprivation therapy (ADT) affects blood pressure and kidney function. It may help doctors understand and manage these side effects better.
Richmond, VirginiaAges 40 years+ - NCT07847463Recruiting
Using exercise tests to tell apart heart artery disease and thickened heart muscle
This study uses an exercise test and heart imaging to tell apart two conditions that both affect the heart: coronary artery disease and thickened heart muscle. It may help doctors better decide which one you have.
Pisa, PIAges 18–99 - NCT07846462Recruiting
Aspirin dose comparison after heart stent placement
This study compares two different daily doses of aspirin (50 mg vs 100 mg) when taken with a standard blood thinner (P2Y12 inhibitor) after getting a heart stent. It aims to see if a lower aspirin dose works just as well with fewer side effects.
Changchun, JilinAges 18–85 - NCT07845929Recruiting
AI help for clearer low-dose CT images
This study tests an artificial intelligence model that helps create clearer images from a lower-dose CT scan, which could mean less radiation exposure during your procedure. It aims to improve image quality while keeping radiation doses as low as possible.
Hefei, AnhuiAges 18 years+ - NCT05780905RecruitingPhase 4
Semaglutide study for brain blood flow in type 2 diabetes
This trial tests whether semaglutide changes blood flow in the brain and the brain’s “barrier” (how well the brain is protected) in people with type 2 diabetes. It may help researchers understand brain-related effects of diabetes treatment using scans and blood tests.
Seattle, WashingtonAges 40–65 - NCT06440083Recruiting
Predicting risk of sudden cardiac death
This study is creating a simple scoring system to predict risk of sudden cardiac arrest. It's looking for people who already have a heart condition, so the test can be made more accurate for others like you.
Guanzhou, GuangdongAges 16–90 - NCT06443268Recruiting
Stroke and quality of life study with caregivers
This study looks at quality of life for people who have had a recent stroke or mini-stroke, and their caregivers. You and a close relative or friend both take part in interviews and surveys over time.
Zurich, Canton of ZurichAges 18 years+ - NCT06420505Recruiting
Study of the Vivo Isar Stent in Routine Care
This trial is testing how well the Vivo ISAR stent works in everyday medical practice for people with different types of heart disease. It is for patients who need a stent for blocked arteries and are willing to receive only the Vivo ISAR stent.
Aix-en-ProvenceAges 18 years+ - NCT05850962Recruiting
Personalized blood pressure targets for ICU shock care
This study compares individualized blood pressure goals versus the usual (standard) targets for adults in the ICU with shock. The aim is to see whether tailored blood pressure treatment can improve outcomes by better matching each person’s needs.
Newcastle, New South WalesAges 40 years+ - NCT03355456Recruiting
Catheter ablation for atrial fibrillation with low-voltage mapping
This trial studies a catheter procedure that targets areas in the heart that show low electrical voltage to treat atrial fibrillation (an irregular heartbeat). You may be eligible if you have non-paroxysmal atrial fibrillation, have tried heart rhythm medicines, and your scan shows low-voltage areas in the left atrium.
Cleveland, OhioAges 18–85 - NCT05960474Recruiting
Study registry for coronary microvascular disease
This trial is a registry, meaning it mainly collects information about people with coronary microvascular disease. It may help researchers better understand the condition and how it affects daily health and treatment needs.
Washington D.C., District of ColumbiaAges 18 years+ - NCT06427694Recruiting
Long-Term Follow-Up of Low-Dose IL-2 After Heart Attack
This study is checking on people who finished a previous trial (IVORY) that tested a low-dose treatment called IL-2 for reducing inflammation after a heart attack. It will see how they are doing over time and if the treatment helped their heart health.
Cambridge, CambridgeshireAges 18–85 - NCT06412536Recruiting
Heart, weight, and hormone trial screening survey
This trial is a quick survey to find out if you may be eligible for future studies on heart health, weight, or hormone-related conditions. It helps researchers match you with the right treatment options.
Brooklyn, New YorkAges 18 years+ - NCT04040777Recruiting
Cardiometabolic risk registry for adults
This study is a health registry that collects information about risk factors for heart and metabolic problems in adults. It may help doctors better understand who is at higher risk and guide future prevention strategies.
Pilar, Buenos AiresAges 18 years+ - NCT06451887Recruiting
Predicting brain swelling after stroke treatment
This study looks at how to predict dangerous brain swelling after endovascular treatment for large artery stroke. It uses CT scans to identify patients at risk, which could help doctors monitor and treat them more closely.
Hangzhou, ZhejiangAges 18–80
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.