Cardiology
Heart & circulation clinical trials
Heart disease, blood pressure, and disorders of the blood vessels and circulation. We’re tracking 9,981 recruiting studies in this area right now.
By phase
- Not applicable7,957
- Phase 2482
- Phase 4481
- Phase 3449
- Phase 1361
- Phase 1/Phase 2164
- Phase 2/Phase 387
Top conditions
- Stroke841
- Heart Failure566
- Hypertension400
- Cardiovascular Diseases389
- Coronary Artery Disease370
- Multiple Myeloma332
- Atrial Fibrillation267
- Ischemic Stroke201
- Atrial Fibrillation (AF)141
- Acute Ischemic Stroke138
- Myocardial Infarction100
- Pulmonary Hypertension100
- Congenital Heart Disease86
- Stroke, Ischemic85
- Peripheral Arterial Disease83
- Acute Coronary Syndrome82
- Obesity80
- Aortic Valve Stenosis79
Leading sponsors
- Mayo Clinic94
- Assistance Publique - Hôpitaux de Paris91
- National Taiwan University Hospital74
- China National Center for Cardiovascular Diseases59
- Beijing Tiantan Hospital52
- Riphah International University51
- Second Affiliated Hospital, School of Medicine, Zhejiang University51
- Massachusetts General Hospital50
- Insel Gruppe AG, University Hospital Bern49
- Johns Hopkins University47
Where studies are running
- California466
- Alabama197
- Massachusetts182
- Arizona173
- New York162
- Florida144
- Maryland120
- Minnesota120
- Illinois118
- Texas117
Recruiting studies9,978 total
- NCT07205692Recruiting
Heart health and multiple conditions after kidney transplant
This study looks at how common heart problems and other health conditions affect kidney transplant patients over time. Researchers hope to learn how to better manage these risks.
Derby, DerbyshireAges 18 years+ - NCT07205666Recruiting
Eplontersen pregnancy and breastfeeding safety study
This study tracks the safety of eplontersen during pregnancy and breastfeeding by collecting reports from people who have taken it. It helps doctors understand any risks to the baby or mother.
FrankfurtAges Any age - NCT07259278Recruiting
Heart rehab program with smart app support
This trial uses a smartphone app to guide exercise for people with coronary heart disease who are at low risk of complications. It aims to help you recover safely at home with remote support from doctors.
Beijing, Beijing MunicipalityAges 18 years+ - NCT07219693Recruiting
QuantaFlo HD Blood Flow Study
This study tests a device called QuantaFlo HD that measures blood flow in your legs and arms. It may help detect circulation problems in people with heart disease, diabetes, or high blood pressure.
Tucson, ArizonaAges 22 years+ - NCT07099664Recruiting
Using ultrasound to guide fluids in children having surgery
This study uses a simple ultrasound on the upper chest to check if children under general anesthesia need extra fluids. It aims to find a better way to manage fluid balance during surgery.
LilleAges birth–18 years - NCT07164911Recruiting
Heart failure rehab: who benefits most?
This study looks at what helps people with heart failure get the most out of a cardiac rehab program. It aims to find out which patients improve the most after completing phase II cardiac rehab.
CorbieAges 40–75 - NCT07137286Recruiting
Genes and high LDL on a ketogenic diet
This study looks at how genes might affect why some people have a big rise in LDL cholesterol when they start a ketogenic diet. If your LDL is over 170 mg/dL on keto, you may be able to join a blood draw to help find out.
Rochester, MinnesotaAges 18 years+ - NCT07178509Recruiting
Heart artery study using stress ultrasound
This study uses a stress echocardiogram (ultrasound of the heart during exercise or medicine) to look at blood flow in people who have had a spontaneous tear in a heart artery (SCAD) and in healthy volunteers. It aims to learn more about how SCAD affects the heart.
Rochester, MinnesotaAges 18 years+ - NCT07133984Recruiting
Heart imaging study for people with heart failure and blocked arteries
This study uses heart MRIs to learn more about people who have heart failure and significant blockages in their coronary arteries. If you are planning to have bypass surgery or a stent, the study may be a fit.
Brooklyn, New YorkAges 18 years+ - NCT07179887Recruiting
Arm cuff treatment for better brain blood flow in older adults
This trial tests if a simple, at-home arm cuff treatment (Remote Ischaemic Conditioning) can improve blood flow regulation in the brain of older adults. It may help understand how to protect brain health as we age.
Derby, DerbyshireAges 65–85 - NCT07173998Recruiting
Quality of life after heart surgery with irregular heartbeat
This study looks at quality of life in people who develop atrial fibrillation (an irregular heartbeat) after heart surgery. Researchers will ask you to fill out surveys to understand how this condition affects your daily life.
Boston, MassachusettsAges 18–100 - NCT07163234Recruiting
Safety of a groin artery tube for heart surgery
This study is testing a special tube (cannula) placed in the groin artery during heart surgery to connect a heart-lung machine. It's for people who are scheduled for planned heart surgery and may be helped by this refined device.
MassyAges 18 years+ - NCT07157813Enrolling by invitation
Improving health habits in forensic psychiatric patients
This trial tests a program to help people in a forensic psychiatric hospital improve their lifestyle habits, like diet and exercise, and metabolic health. It aims to support better health and well-being.
Vaxjo, Kronoberg CountyAges 18–64 - NCT07147075Enrolling by invitation
Improving blood pressure care through better doctor-patient talks
This study tests a training program for doctors to help them communicate better with patients who have high blood pressure. If you have high blood pressure and see a doctor at certain Duke Primary Care clinics, you may be able to join.
Durham, North CarolinaAges 18 years+ - NCT07030062Recruiting
Echo-guided aortic valve replacement (Echo TAVR)
This trial tests a way to replace your aortic valve using only ultrasound (echo) instead of X-rays or dye. It may be a good fit if you have severe aortic stenosis and need to avoid contrast or radiation because of kidney problems or cancer risk.
BeijingAges Any age - NCT07076771Recruiting
Testosterone and artery blockage in young men with heart disease
This study looks at whether testosterone levels are linked to how blocked the heart arteries are in young men (under 45) with early heart disease. It involves a one-time blood test during a planned cardiac catheterization.
SohagAges Up to 45 years - NCT07040735Recruiting
Low-flow anesthesia study for open-heart surgery
This study tests a low-flow anesthesia method during open-heart surgery to see if it works well and safely. It may help patients by using less medication.
AnkaraAges 18 years+ - NCT07031128RecruitingPhase 4
AKG supplement trial for older heart bypass patients
This trial tests whether a supplement called alpha ketoglutarate (AKG) can help older adults recover better after heart bypass surgery. If you are 50 or older and scheduled for elective bypass surgery, you may be able to join.
Singapore, SingaporeAges 50 years+ - NCT07083011RecruitingPhase 2
PET scan study for heart failure and cardiac sarcoidosis
This study uses a special PET scan (68Ga-FAPI) to look at inflammation in the heart. It may help researchers understand heart failure and cardiac sarcoidosis better.
Rochester, MinnesotaAges 18 years+ - NCT07523750Recruiting
Comparing two catheter treatments for persistent atrial fibrillation
This study compares two different catheters that use pulsed field ablation to treat a type of irregular heartbeat called persistent atrial fibrillation. The goal is to see which one works better and is safer.
Phoenix, ArizonaAges 18–80 - NCT07747896Recruiting
Coordinated primary care team for hard-to-heal wounds
This trial tests whether a team of different healthcare professionals working together in your primary care clinic can help heal stubborn wounds (ulcers) that have not healed with standard care. If you join, you may get more coordinated care and support to help your wound heal.
HillerødAges 18 years+ - NCT07747701Recruiting
Monitoring brain blood flow after stroke treatment to predict recovery
This study looks at whether monitoring brain blood flow after a blocked artery is opened can help predict if the treatment will be successful. It may help doctors identify who might need additional help after stroke treatment.
BeijingAges 18 years+ - NCT07748572Recruiting
Tracking safety and performance of brain aneurysm flow diverters
This study collects information from patients in France who are being treated for a brain aneurysm with specific flow diversion devices (p64, p48 MW, or p64 MW). The goal is to confirm that these devices are safe and work well in real-world use, which can help doctors make better treatment decisions.
AmiensAges 18 years+ - NCT07747428Recruiting
Eye imaging study for diabetic retinopathy
This study uses a special eye imaging test called OCT angiography to look at tiny blood vessels in the back of the eye. It aims to understand changes caused by diabetic retinopathy, which could help improve how we monitor and treat this condition.
SohagAges 18–80
Common questions
- How many heart & circulation clinical trials are recruiting?
- Clin2 is tracking 9,981 recruiting cardiology studies from the U.S. registry right now, out of 15,236 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.