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
- NCT04212468Recruiting
Home blood pressure tracking for older adults
This study looks at whether recording blood pressure at home is feasible and useful for people age 65 and older. It may help improve how blood pressure is monitored in everyday life.
Guangzhou, GuangdongAges 65 years+ - NCT04212455Recruiting
Study of blood tests linked to high blood pressure
This study looks at whether certain blood markers can help explain or predict high blood pressure in adults. It may help researchers understand hypertension better, which could support future prevention or treatment.
Guangzhou, GuangdongAges 18 years+ - NCT04218344Recruiting
Heart attack and chest pain study at Harefield hospital
This study follows people who come to Harefield for urgent heart-related chest pain and planned heart-vessel imaging (coronary angiography). It aims to better understand these conditions and what doctors see during the procedure, which may improve care for future patients.
Harefield, MiddlesexAges Any age - NCT04240652Recruiting
Diabetes eye screening and prevention program for eye disease
This program aims to screen people for diabetic eye problems early and help prevent vision loss over time. It may help you if you have type 2 diabetes (or you’ve been invited as a diabetes/non-diabetes participant) and can safely take part in the study activities.
Shanghai, Shanghai MunicipalityAges 18 years+ - NCT02033811Recruiting
MitraClip registry for severe leaky mitral valve
This registry study follows people who have a severely leaky mitral heart valve and receive MitraClip, a procedure that repairs the valve through the skin. It helps doctors learn how well this treatment works over time for different patients.
DüsseldorfAges 18 years+ - NCT03398369Recruiting
Imaging study to guide heart failure device treatment
This study uses advanced heart imaging to better understand heart function in people who may benefit from a cardiac resynchronization therapy (CRT) device. It aims to find ways to improve how doctors choose treatment and tailor care.
Charlottesville, VirginiaAges 20–90 - NCT02728479Recruiting
Registry for people getting angioplasty
This study is a registry that collects information from people who are having a balloon procedure to open blocked blood vessels (angioplasty). It may help doctors understand outcomes and care patterns, but it usually does not change your treatment.
DüsseldorfAges 18 years+ - NCT03360227Recruiting
Registry after heart device implantation planning
This is a registry study that records information from people before they get a heart-related device implanted. It may help doctors understand how the team’s tests and planning relate to the procedure and outcomes later on.
DüsseldorfAges 18–80 - NCT03626480Recruiting
Nutrition support before and after heart surgery for babies
This trial studies a nutrition plan given around the time of heart surgery for babies with congenital heart disease. It may help improve how babies grow and recover by supporting feeding before and after the operation.
Hangzhou, ZhejiangAges 1 day–1 year - NCT02282748Recruiting
Swiss long-term health study for local residents
This trial is a long-term study that follows people over time to learn about health patterns in specific Swiss areas. Your participation may help researchers better understand long-term health changes and how to improve care.
Uznach, Canton of St. GallenAges 6 years+ - NCT04347785Recruiting
Study nerve effects after carotid surgery done with local anesthesia
This trial looks at what factors predict new or worsening nerve symptoms after a carotid endarterectomy (a surgery to clear plaque in the neck artery) when done with regional anesthesia. It may help doctors better anticipate and prevent neurologic problems during this procedure.
PortoAges 18–100 - NCT03143361Recruiting
Aortic valve replacement registry for adults needing valve surgery
This study follows adults who are having aortic valve replacement to better understand outcomes across different hospitals in Europe. It may help your care team compare results and improve future treatment planning.
VeronaAges 18 years+ - NCT04329234Recruiting
Heart failure registry study of hospitalized adults
This study collects information from adults hospitalized with heart failure to better understand the condition and outcomes. It may help doctors improve care over time by tracking symptoms, test results, and treatments.
SeongnamAges 18 years+ - NCT03815123Recruiting
Study of cardiac CT scans ordered by your doctor
This study enrolls people who are referred by their physician for a heart CT scan (a test that takes detailed pictures of the heart). It helps researchers understand how these scans are performed and used in routine care.
Heidelberg, Baden-WurttembergAges Any age - NCT02113644Recruiting
Prevent CardioKids for overweight children after the COACH program
This trial looks at ways to help children who are overweight or obese reduce future heart and health risks. It compares children in different groups based on weight and, for some, whether they are having elective surgery.
Maastricht, LimburgAges 6–18 - NCT04190602Recruiting
Registry study for NeoChord artificial mitral valve chord
This study keeps track of people who had NeoChord treatment to help understand how well it works in everyday care. You may be included if you had a certain type of mitral valve leakage (regurgitation) and the procedure happened after 2016.
BonnAges 18 years+ - NCT03781492Recruiting
Treatment study for stable angina symptoms
This study looks at managing and treating stable angina, a type of chest discomfort that happens predictably with activity or stress. It may help find better ways to control symptoms and improve daily life, but you must not have certain recent heart events to join.
Zabrze, Silesian VoivodeshipAges 18 years+ - NCT03428048Recruiting
NEXUS Registry for coronary artery disease or Afib patients
This is a research registry that collects health information about people with coronary artery disease or Afib. It may help doctors and researchers better understand these heart conditions and improve future care.
Glenwood Springs, ColoradoAges 18 years+ - NCT04407780Recruiting
Cardio-oncology patient registry
This is a registry (a research database) for people who are being followed in cardio-oncology, which means care for heart problems related to cancer or cancer treatments. It may help doctors better understand these conditions and improve future care.
ParisAges 18 years+ - NCT04414865Recruiting
Check a new heart valve treatment for older, high-risk patients
This study follows how the VitaFlow heart valve works in people age 70+ who have severe, narrowed aortic valves and cannot safely get open-heart valve surgery. It’s meant to see whether the device improves outcomes and is safe over time.
Shanghai, Shanghai MunicipalityAges 70 years+ - NCT04414878Recruiting
Transcatheter aortic valve replacement for older, high-risk patients
This trial tests a new heart valve replacement done through a catheter (not open-heart surgery) in older adults with severe aortic valve narrowing. It’s mainly for people who are high-risk or not good candidates for standard surgery, to see if the new valve improves outcomes.
Beijing, Beijing MunicipalityAges 70 years+ - NCT02996552Recruiting
Ring repair for mild-to-moderate leaky right valve
This trial looks at whether adding a specific repair to the right valve (called tricuspid annuloplasty) during mitral valve surgery helps people whose right valve leakage is not severe. It compares doing the extra right-valve repair versus doing only the mitral valve repair.
Rozzano, MilanoAges 18 years+ - NCT04577248Recruiting
Heart valve registry for people considering valve procedures
This study follows adults with leaky or narrowed heart valves who are being considered for a valve procedure. It helps doctors better understand patient outcomes and care decisions for these valve problems.
Munich, BavariaAges 18–110 - NCT04062500Recruiting
Heart failure patient follow-up study to track health and deaths
This study follows people with heart failure over time to record outcomes like illness course and death, and to understand how treatments affect results. If you have heart failure and can join regular check-ins, your information may help improve future care.
Shanghai, Shanghai MunicipalityAges 18–90
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.
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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.