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
- NCT06175650Recruiting
Female-focused recovery plan after heart surgery
This study looks at how to improve recovery after heart surgery, especially for women. It reviews medical records from people who had heart surgery in the past or will have it in the next few years at two hospitals in Amsterdam.
Amsterdam, North HollandAges 18 years+ - NCT07864051Recruiting
Studying blood flow to predict plaque growth in heart arteries
This trial uses special imaging to look at how blood flows through the heart's arteries. It aims to see if certain blood flow patterns can predict where harmful plaque (fatty buildups) may grow, which could help prevent future heart problems.
LondonAges 40 years+ - NCT03642509Recruiting
Compare a heart procedure to blood-thinner pills for stroke prevention
This trial studies whether closing off part of the heart (the left atrial appendage) can prevent stroke as well as long-term newer blood-thinner pills. It may help people with atrial fibrillation who recently had a stroke or a warning stroke (TIA).
Aarhus, Central JutlandAges 18 years+ - NCT05063955Recruiting
Study muscle changes in people with heart failure
This study looks at the reasons for age-related muscle loss (sarcopenia) in people with heart failure. It may help researchers understand what is causing muscle weakness and how it could be treated in the future.
Aarhus NAges 18–90 - NCT07867197Recruiting
Digital cardiac rehab for heart attack survivors
This trial tests a digital cardiac rehabilitation program delivered via smartphone for people who've had a heart attack. It aims to help improve your daily function and recovery from the comfort of your home.
Minya, Minya ProvinceAges 55–65 - NCT07870941Recruiting
Heavy bleeding after heart surgery in women on blood thinners
This study looks at how common heavy or long menstrual bleeding is in women of childbearing age who take blood-thinning medicines after heart surgery. It aims to understand this side effect and help doctors better manage it.
Shanghai, Shanghai MunicipalityAges 18–49 - NCT05095090Recruiting
Study of hospital patients with breathing problems
This study looks at patients admitted to the hospital with acute breathing issues or those with ongoing lung conditions. It aims to better understand these conditions and may help improve future care.
LeicesterAges 18–90 - NCT07793630RecruitingPhase 4
Laser and foam treatment for spider and reticular leg veins
This study compares two treatments for small, visible leg veins (spider veins and slightly larger blue or green veins). It tests whether using a laser along with foam sclerotherapy (a medicine injected into the veins) works better than foam alone.
Ribeirão Preto, São PauloAges 18–60 - NCT04942041Recruiting
Thrombectomy for large stroke blockages at low-volume centers
This study tests whether using a procedure called mechanical thrombectomy at smaller stroke centers can improve outcomes after a large-vessel stroke. It may help people who have a major artery blockage get timely treatment, with measured effects on complications and survival.
Kristiansand, AgderAges 18–100 - NCT03132129Recruiting
Heart imaging study in adults with type 2 diabetes
This study looks for early, “silent” changes in heart function in adults with type 2 diabetes, even if you feel okay. It uses heart scans and looks for factors that may help explain why these changes happen.
LeicesterAges 50–75 - NCT05896592Recruiting
Ablation versus changing pacing settings for slow heartbeats
This study compares a procedure called cardioneuroablation with staying on permanent pacing in people who have symptoms from a slow heart rate. It aims to see which approach works better and is safer for reducing symptoms related to sinus node or heart conduction problems.
Radom, Masovian VoivodeshipAges 18–65 - NCT06014723Recruiting
Balloon angioplasty for recent minor stroke or TIA
This study tests a balloon procedure to open a narrowed artery in the brain to prevent further strokes. It is for people who recently had a mild stroke or high-risk TIA from a significant blockage.
Changchun, JilinAges 30–80 - NCT05726916RecruitingPhase 3
Eculizumab for severe kidney and blood clotting emergencies in adults
This trial studies eculizumab, a targeted blood-clotting and immune system medicine, for adults hospitalized with hypertensive emergency–associated hemolytic uremic syndrome (a serious condition affecting kidneys and blood). It aims to see whether the drug can improve outcomes after this life-threatening event.
ParisAges 18 years+ - NCT06078436Recruiting
Early carvedilol for heart failure shock
This trial tests whether starting the heart failure medication carvedilol early, along with standard monitoring, can help people in cardiogenic shock (when the heart can't pump enough blood) due to a weak heart muscle. It aims to see if earlier treatment improves outcomes.
SeoulAges 19 years+ - NCT06187311RecruitingPhase 4
Rivaroxaban for atrial fibrillation patients
This trial tests two doses of rivaroxaban (15mg and 20mg) to see how well they prevent strokes in people with non-valvular atrial fibrillation, a type of irregular heartbeat not caused by a heart valve problem. It may be an option if you need blood thinners to lower your stroke risk.
SeoulAges 19–99 - NCT06189950Recruiting
Testing a new stent for wide-necked brain aneurysms
This trial is testing a new stent (a small mesh tube) designed to treat wide-necked brain aneurysms. If you have this type of aneurysm, the stent helps hold coils in place to block blood flow and prevent rupture.
Zhengzhou, HenanAges 18–80 - NCT06192251Recruiting
Lifestyle medicine program for chronic conditions
This trial tests a complete lifestyle medicine program to help people with conditions like prediabetes, diabetes, high blood pressure, heart disease, high cholesterol, or being overweight. The program aims to improve your overall health through diet, exercise, and other lifestyle changes.
Parry Sound, OntarioAges 18 years+ - NCT06196255RecruitingPhase 1/Phase 2
CAR-T cell therapy for resistant or relapsed multiple myeloma
This trial tests a new CAR-T cell therapy that targets FcRL5 on myeloma cells. It's for people whose myeloma has come back or stopped responding to other treatments, including stem cell transplant.
Xuzhou, JiangsuAges 18–70 - NCT06194968Recruiting
Stroke treatment with urokinase in real-world settings
This study looks at how well the clot-busting drug urokinase works for treating acute ischemic stroke in everyday medical practice. It may help if you have had a stroke and are eligible for clot-dissolving medication.
Lanzhou, GansuAges 18 years+ - NCT06196086Recruiting
Measuring heart stiffness in heart failure with normal pumping
This study uses a special ultrasound technique to check how stiff the heart muscle is in people with heart failure who have a normal pumping ability (HFpEF). It aims to better understand heart stiffness to help diagnose and manage this condition.
Jinan, ShandongAges 18–80 - NCT06060912Recruiting
Comparing two heart devices to prevent stroke in atrial fibrillation
This study compares two devices (LAmbre and AMPLATZER Amulet) that are placed in the heart to prevent strokes in people with atrial fibrillation who cannot take blood thinners. If you join, you will be randomly assigned to get one of the two devices.
Munich, BavariaAges 18–100 - NCT06197048Recruiting
Nutrition counseling for schizophrenia or bipolar disorder
This study tests whether nutritional counseling can improve body measurements and health markers in people with schizophrenia, psychosis, or bipolar disorder. It may help you manage weight and overall health.
Drammen, AkershusAges 18 years+ - NCT05603520Recruiting
Study of how the aorta varies in healthy people and patients
This study uses MRI scans to understand how different parts of the aorta look and behave, including in healthy volunteers and people with aortic problems. It may help researchers better describe differences in the aorta that could improve future diagnosis or treatment planning.
DüsseldorfAges 18 years+ - NCT06194669Recruiting
VHL disease and kidney tumor risk study
This study looks at how early changes in kidney cells can lead to tumors in people with VHL disease. It may help understand why some people develop kidney cancer and how to prevent it.
MilanAges 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
- 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.