Cardiology
Heart & circulation clinical trials
Heart disease, blood pressure, and disorders of the blood vessels and circulation. We’re tracking 9,610 recruiting studies in this area right now.
By phase
- Not applicable7,634
- Phase 2471
- Phase 4471
- Phase 3437
- Phase 1350
- Phase 1/Phase 2160
- Phase 2/Phase 387
Top conditions
- Stroke796
- Heart Failure534
- Hypertension389
- Cardiovascular Diseases373
- Coronary Artery Disease363
- Multiple Myeloma327
- Atrial Fibrillation259
- Ischemic Stroke190
- Atrial Fibrillation (AF)154
- Acute Ischemic Stroke139
- Pulmonary Hypertension104
- Myocardial Infarction96
- Congenital Heart Disease84
- Peripheral Arterial Disease80
- 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
- California451
- Alabama195
- Arizona181
- Massachusetts173
- New York168
- Florida140
- Texas122
- Maryland118
- Minnesota117
- Illinois111
Recruiting studies9,610 total
- NCT06093932RecruitingPhase 4
Songling Xuemaikang Capsules for mild high blood pressure
This study tests whether Songling Xuemaikang Capsules can help lower blood pressure in people with mild hypertension who are not currently on regular medication. It may offer a natural treatment option for managing early-stage high blood pressure.
Beijing, Beijing MunicipalityAges 35–65 - NCT06560983Recruiting
Blood sugar and stroke outcomes over one year
This study watches how blood sugar levels affect recovery and risks over one year in people who come to the ER with a stroke. It aims to help doctors better manage blood sugar during emergency stroke care.
Kathmandu, BagmatiAges 18 years+ - NCT06451146Recruiting
Orbital atherectomy for calcified heart blockages
This trial studies a procedure called orbital atherectomy to treat hardened calcium deposits in heart arteries. It aims to help people with moderately to severely calcified blockages.
Legnica, Lower Silesian VoivodeshipAges 18 years+ - NCT07768761Recruiting
Electrical stimulation exercise for lower limb paralysis
This trial tests whether a muscle exercise program using electrical stimulation can help people with paralysis in their legs. It may improve muscle strength, blood flow, or other health benefits.
Cleveland, OhioAges 18 years+ - NCT01258231Recruiting
Genetic test to predict risks after heart surgery
This study looks for genetic (DNA) clues that may help predict side effects or complications after heart surgery. If you join, your genome information may be used to understand who is at higher risk and why.
Boston, MassachusettsAges 20–90 - NCT07769528Recruiting
Heart pump support for severe heart failure
This study tests a device that helps the heart pump blood when it is too weak to do so, even with medicine, after surgery, or while waiting for a transplant. It aims to see if it's safe and works well.
Beijing, Beijing MunicipalityAges 18 years+ - NCT07773064Recruiting
Eye scan and blood test to predict heart disease risk
This study looks at whether images of the back of your eye and certain substances in your blood can help identify people at high risk for heart disease. If you're having tests for chest pain or other heart concerns, this research may help improve early detection.
Beijing, Beijing MunicipalityAges 18–100 - NCT06544473RecruitingPhase 4
Estrogen pill vs. patch for Turner syndrome
This trial compares oral and transdermal (patch) estrogen to find the right dose for women with Turner syndrome. It aims to see which method works best for hormone replacement.
Aarhus, Aarhus NAges 18–50 - NCT07771465RecruitingPhase 3
Long-term safety of danicamtiv for genetic dilated cardiomyopathy
This study checks the long-term safety and effectiveness of the drug danicamtiv in people with a genetic form of dilated cardiomyopathy, a condition where the heart muscle becomes weak and enlarged. If you've already completed the earlier DAN-301 study, this trial continues to monitor you while you keep taking the medication.
Birmingham, AlabamaAges 18 years+ - NCT06270537Recruiting
Dominus stent-graft follow-up study
This study is checking how well the Dominus stent-graft works over time in people who have already had it placed. You may be asked to come back for follow-up visits.
Vila Velha, Espírito SantoAges 18 years+ - NCT07770035Enrolling by invitation
School-age outcomes after newborn brain injury
This study looks at how children who had a brain injury around birth (called hypoxic-ischaemic encephalopathy, or HIE) are doing in school and daily life, compared to children without that history. It aims to understand the long-term effects and support needs.
Cork, CorkAges 5–12 - NCT07773870Recruiting
Cold weather exposure and heart healing after stent placement
This study looks at how living or working in cold regions affects heart recovery after a stent procedure. Participants will have heart imaging at the start and again 6 months later to see if cold exposure impacts heart function.
Beijing, Please Select An Option BelowAges 18–80 - NCT07772570Recruiting
Studying blood markers in coronary artery disease
This study collects blood samples and images from patients with heart muscle damage or those undergoing coronary angiography. The goal is to find new biomarkers that could improve diagnosis and treatment of coronary artery disease.
OxfordAges 18–90 - NCT07769281Recruiting
Recovering arm and hand movement after stroke
This study tests a new system called NeuroTechR3 that may help people who have had a stroke regain movement in their arm and hand. It involves training exercises that you can do at home with a computer.
Jacksonville, FloridaAges 18 years+ - NCT07768644Recruiting
Nailfold microscope study for pulmonary hypertension
This study uses a special microscope to look at the tiny blood vessels at the base of your fingernails. It aims to see if these vessels can help doctors understand and monitor pulmonary hypertension, a condition of high blood pressure in the lungs.
Clydebank, West DunbartonshireAges 18 years+ - NCT07770659Recruiting
Using MRI to detect early heart transplant rejection
This study tests whether a heart MRI can detect early signs of organ rejection after a heart transplant. If successful, it could reduce the need for frequent biopsies.
Little Rock, ArkansasAges 6–25 - NCT07772817Recruiting
Chest-strap heart monitor for active people
This study compares a new chest-strap heart monitor to a traditional adhesive patch monitor. You will wear both while doing your normal exercise routine to see if the strap is easier to use and gives good readings.
Scottsdale, ArizonaAges 22 years+ - NCT07773272Recruiting
Combined heart, kidney, and metabolic care after a heart attack
This study tests a new approach to managing heart, kidney, and metabolic health together after a heart attack or unstable angina. It aims to improve your recovery and reduce future risks.
Heerlen, LimburgAges 18 years+ - NCT07769008Recruiting
CT scan versus angiogram before heart bypass surgery
This trial compares two imaging methods used before coronary artery bypass grafting (CABG) to check for blocked heart vessels. The goal is to see if a CT scan is as good as the standard angiogram and equally helpful for planning surgery.
ShanghaiAges 18 years+ - NCT07770386Recruiting
Predicting heart trouble after child heart surgery
This study looks at whether a simple blood test can predict a serious heart problem called low cardiac output syndrome after a child has heart surgery. Doctors hope this will help them spot and treat this issue earlier, which could lead to better recovery for your child.
LilleAges Up to 17 years - NCT07774845Recruiting
Blood fats and platelets research for blood clot risk
This study looks at how blood fats (lipids) interact with platelets to help understand blood clot risk and possible future treatments. It is for people over 40 without known heart or artery disease.
São Paulo, São PauloAges 40 years+ - NCT07772518Recruiting
Comparing two guidance methods for pulsed field ablation in atrial fibrillation
This trial compares two ways of guiding a procedure to treat atrial fibrillation (an irregular heartbeat). One uses special sound waves to see inside the heart, and the other uses electrical mapping. Both are used with the FARAPULSE system to deliver a type of energy called pulsed fields to fixed areas of the heart.
ZagrebAges 18 years+ - NCT07771335Recruiting
Erlangen stroke registry: tracking strokes over time
This study collects health information from people in Erlangen, Germany who have had a stroke. It helps researchers understand stroke causes and outcomes to improve future care.
ErlangenAges 18 years+ - NCT07771127Recruiting
Comparing a special pad to a sandbag for groin bleeding after heart procedure
This study compares two ways to stop bleeding after a heart procedure through the groin: using a special pad or a sandbag. It aims to see which method works better and is safer.
Bursa, NilüferAges 18 years+
Common questions
- How many heart & circulation clinical trials are recruiting?
- Clin2 is tracking 9,610 recruiting cardiology studies from the U.S. registry right now, out of 14,650 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
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- Pain
- Injuries & trauma
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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.