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
- NCT07831252Recruiting
Blood pressure and oxygen levels during heart surgery
This study looks at how blood pressure changes during the start of open heart surgery and whether it affects oxygen levels in body tissues. It may help doctors better manage blood pressure during surgery to keep patients safe.
Istanbul, SultangaziAges 18–90 - NCT07830888Recruiting
Mitral valve prolapse rhythm risk study
This study looks at people with mitral valve prolapse who also have rhythm problems like extra beats or fast heart rhythms. The goal is to better understand risk and improve care.
OsloAges Any age - NCT05095857RecruitingPhase 4
Ketamine to improve care in severe acute brain injury
This Phase 4 trial tests whether giving ketamine during anesthesia is safe and helpful for adults with severe sudden brain injuries after surgery. It may improve how patients are sedated and cared for while they are on a breathing machine.
CopenhagenAges 18 years+ - NCT05978388Recruiting
CT scan before catheter ablation for atrial fibrillation
This trial is testing whether a coronary CT angiography scan, performed before catheter ablation for atrial fibrillation, helps doctors find hidden blockages in heart arteries. It may help people without known heart disease avoid unnecessary procedures.
Hellerup, Capital RegionAges 18 years+ - NCT06323434Recruiting
Spinal fluid leaks in chronic subdural hematoma
This study looks for spinal fluid leaks in people with chronic subdural hematoma (a slow buildup of blood on the brain). It uses MRI to find a possible cause, which could help improve treatment.
Freiburg im Breisgau, Baden-WurttembergAges 18 years+ - NCT03233087Recruiting
Study to predict outcomes in aortic dissection
This study collects medical information and blood-test timing data to learn how to diagnose aortic dissection sooner and predict outcomes. It may help doctors better plan care for people with suspected or confirmed aortic dissection.
Beijing, Beijing MunicipalityAges 18–80 - NCT07820072Recruiting
Temporary pacemaker safety and performance study
This study tests a temporary pacing wire that helps control heart rhythm during procedures or when the heart beats too slowly. It aims to see if the device works well and is safe for people who need short-term pacing.
Acquaviva delle Fonti, BariAges 18 years+ - NCT07825363Recruiting
Early warning system for heart failure or heart attack patients
This study tests a sensor that monitors oxygen levels in body tissues to help doctors spot when your heart is not pumping enough blood early. The goal is to catch problems sooner so you can get faster treatment.
Weston, FloridaAges 18 years+ - NCT07820670Recruiting
Blood thinner choice after cesarean section to prevent blood clots
This study compares two blood-thinner medicines given after a C-section to see which one works better at preventing dangerous blood clots. It may help women who are at higher risk for clots rest easier right after delivery.
HolonAges 18–50 - NCT07823387Recruiting
Bladder pressure changes during dialysis in intensive care patients
This trial aims to see how special dialysis treatment (called CRRT) changes the pressure inside your belly, which might help doctors make better treatment decisions. If you are in the intensive care unit and need this treatment, your participation could improve care for future patients with similar needs.
Bursa, BursaAges 18 years+ - NCT06390189Recruiting
Inflammation resolution in heart and metabolic health
This study examines how your body naturally resolves inflammation, which is important for heart health and conditions like diabetes. It involves blood draws and tests to understand how inflammation works.
AarhusAges 18–75 - NCT04524247Recruiting
Testing a custom stent graft for frail aortic aneurysms
This study looks at a specialized, customized stent graft to treat certain aneurysms (bulges) of the aorta in people who may be considered frail. It’s meant to see how well the device works and how safely it can be used in patients who fit specific aneurysm patterns.
Los Angeles, CaliforniaAges 18 years+ - NCT07819526Recruiting
Watching recovery after stroke in people with cancer
This study looks at what happens to people who have a stroke while they also have active cancer. By tracking their recovery, doctors hope to learn better ways to care for patients with both conditions.
Suita, OsakaAges Any age - NCT07822997Recruiting
Quality of Life Questionnaire for Pulmonary Hypertension in Brazil
This study is testing a questionnaire (EMPHASIS-10) to measure quality of life in people with pulmonary hypertension. The goal is to adapt it for Brazilian Portuguese speakers so doctors can better understand how the disease affects daily life.
Porto AlegreAges 18 years+ - NCT07822737Recruiting
Using CT scans to find high-risk heart plaque
This study uses a special CT scan to look at the inside of your heart arteries and find any high-risk fatty deposits (plaque) that might cause problems later. It aims to see if this scan can predict future heart events, so you and your doctor can make better treatment choices.
Beijing, ChinaAges 18 years+ - NCT07817589Recruiting
Adding yoga to exercise rehab for heart failure
This study tests whether adding yoga to a hospital-based cardiac rehabilitation program can improve the health and well-being of people with heart failure. It might help you feel better and manage your condition more effectively.
Dharwad, KarnatakaAges 18 years+ - NCT07817316Recruiting
Brain training to improve attention after brain injury
This study tests two brain-training methods, neurofeedback and transcranial random noise stimulation (tRNS), to see if they can help improve attention problems in people who have had a brain injury. It may help people who have difficulty focusing or staying on task after their injury.
Valencia, ValenciaAges 18–85 - NCT07824297Recruiting
Cognitive outcomes after brain blood vessel malformation treatment
This trial tests whether a minimally invasive procedure to block a specific type of abnormal connection between brain blood vessels can help preserve or improve memory and thinking. It is being studied in people who have not yet had bleeding from this condition.
BolognaAges 18–99 - NCT07822633Recruiting
Arm movement learning after stroke
This trial looks at how the brain and arm work together after a stroke, comparing people who have had a recent stroke, people who had a stroke a while ago, and healthy people. It involves three sessions of movement tasks and may include an MRI scan. It could help understand how to improve therapy for stroke recovery.
Yvoir, NamurAges 40–90 - NCT07825805Recruiting
Hand position and CPR comfort for helpers
This trial tests different hand positions during CPR to see which is easier and gives better chest compressions. It may help find a way for people to do CPR more comfortably and effectively.
PécsAges 18 years+ - NCT07820800Recruiting
Personalized digital health guidance for middle-aged adults
This study tests whether a digital health app can help middle-aged adults based on their personal metabolic risk. It aims to prevent diseases by providing tailored guidance.
SavonlinnaAges 45–55 - NCT07824050Recruiting
Studying dangerous heart rhythms after a heart attack
This study looks at people who had a heart attack or cardiac arrest to find out which dangerous heart rhythms can happen afterward. The goal is to improve care and prevent future problems.
Eindhoven, North BrabantAges 18 years+ - NCT07820319Recruiting
A new heart ultrasound test for intensive care patients
This study tests a new way to measure heart pressure using an ultrasound, which may help doctors decide how to treat patients in intensive care. If successful, it could be used more widely in the future.
Hong KongAges 18 years+ - NCT07820410RecruitingPhase 2/Phase 3
Atrial shunt for heart failure with reduced pumping function
This study tests a small device that creates a tiny opening inside the heart to help lower pressure and improve symptoms in people with heart failure. The procedure is minimally invasive and aims to reduce hospitalizations and improve quality of life.
Beijing, Beijing MunicipalityAges 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
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- Bones, joints & muscles
- 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.