Cardiology
Heart & circulation clinical trials
Heart disease, blood pressure, and disorders of the blood vessels and circulation. We’re tracking 9,973 recruiting studies in this area right now.
By phase
- Not applicable7,957
- Phase 2481
- Phase 4480
- Phase 3447
- Phase 1360
- Phase 1/Phase 2162
- Phase 2/Phase 386
Top conditions
- Stroke843
- Heart Failure565
- Hypertension399
- Cardiovascular Diseases390
- Coronary Artery Disease373
- Multiple Myeloma333
- Atrial Fibrillation268
- Ischemic Stroke200
- Atrial Fibrillation (AF)140
- Acute Ischemic Stroke138
- Myocardial Infarction101
- Pulmonary Hypertension100
- Stroke, Ischemic86
- Congenital Heart Disease85
- 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
- California461
- Alabama197
- Massachusetts183
- Arizona173
- New York161
- Florida145
- Maryland120
- Minnesota120
- Illinois119
- Texas118
Recruiting studies9,970 total
- NCT07669987Recruiting
Heart bypass surgery and artery imaging study
This study looks at whether a special imaging test called QFR, done before heart bypass surgery, can help predict how well the radial artery graft will work shortly after surgery. If you have severe blockages in your heart arteries and are scheduled for bypass surgery, this trial may be relevant.
Beijing, Beijing MunicipalityAges 18–80 - NCT07667452Recruiting
AI patch study for heart failure recognition
This trial tests a new AI computer model that uses a single feature from a wearable patch to help recognize heart failure more easily. If you have heart failure with moderate to severe symptoms, this study may help improve how we monitor your condition.
Hangzhou, ZhejiangAges 18 years+ - NCT07666451Recruiting
Heart and neck artery ultrasound study in healthy children
This study uses ultrasound (sound waves) to take pictures of the heart and the main neck arteries in healthy children across Italy. It helps doctors learn what normal measurements look like for different ages.
Bologna, BolognaAges birth–18 years - NCT06483516Recruiting
Quality of life after AAA surgery: EVAR vs open repair
This trial compares two ways to fix a large abdominal aortic aneurysm (AAA) and looks at how your quality of life changes after surgery. One method uses a small tube (stent) inserted through a blood vessel, and the other is traditional open surgery. It may help you understand the best option for you.
ToulouseAges 18 years+ - NCT06669806Recruiting
TIPS Stent Graft for Cirrhosis Complications
This study tests a TIPS stent graft (a tiny mesh tube placed in the liver to relieve pressure) for people with cirrhosis and complications like bleeding or fluid buildup. It aims to see how well it works and if it's safe.
Changsha, HunanAges 18–75 - NCT06474819Recruiting
Comparing two pacemaker lead placements to protect heart function
This study compares two ways of placing a pacemaker lead to see if one protects your heart's pumping ability better over time. It may help prevent heart muscle weakness caused by pacing.
BarcelonaAges 18 years+ - NCT06663696Recruiting
A study of Supraflex Cruz stents for multivessel heart disease
This trial is monitoring patients who receive Supraflex Cruz stents in multiple blocked heart arteries. It aims to gather real-world safety and effectiveness data to help improve future care.
SousseAges 18–99 - NCT07658222Recruiting
Understanding heart changes in advanced cirrhosis
This study is looking at how cirrhosis affects the heart (called cirrhotic cardiomyopathy). It aims to understand the connection between advanced liver disease and heart function, which may help improve care for people with cirrhosis.
Nashville, TennesseeAges 18 years+ - NCT07653659Recruiting
Lowering norepinephrine in shock: effects on blood vessel pressure
This study tests whether reducing the dose of a medicine that raises blood pressure (norepinephrine) affects how blood moves through the body in people with distributive shock. If you are on a steady low dose of norepinephrine and have a special heart monitor (PiCCO catheter), this trial may help doctors understand safer ways to wean the medicine.
Beijing, Beijing MunicipalityAges 18 years+ - NCT06656065Recruiting
Heart artery check after transplant
This study tests a new way to check the health of the arteries in your new heart after transplant. It uses a special medication (adenosine) to see how well blood flows through the heart's arteries, which could help doctors find problems early.
L'Hospitalet de Llobregat, BarcelonaAges 18 years+ - NCT06972979Enrolling by invitation
Support program to help you take your cholesterol medicine
This study tests a support program to help people take their statin cholesterol medicine as prescribed. If you have trouble staying on track with your medication, this might help.
St Louis, MissouriAges 18 years+ - NCT07192081Recruiting
Comparing two drugs to steady heart rate during gallbladder surgery
This trial tests two medicines, labetalol and lignocaine, given through a vein to see which better controls blood pressure and heart rate during the tube placed in your windpipe for a routine gallbladder removal surgery.
Peshawar, Khyber PakhtunkhwaAges 18–60 - NCT07574151Recruiting
Clarity of study info for aortic disease
This study is testing how clear and acceptable the information materials are for people with thoracic aortic disease. It does not test any new treatments but aims to improve how studies are explained to patients.
NottinghamAges 18 years+ - NCT06370338Recruiting
Expert views on cardiothoracic critical care training
This study interviews experts in cardiothoracic critical care to understand what training is needed. It helps improve how doctors learn to care for patients after heart or chest surgery.
Columbus, OhioAges Any age - NCT07497308Recruiting
GDF-15 levels and early outcomes after LVAD surgery
This trial looks at a blood marker called GDF-15 in people getting a heart pump (LVAD) to see if it can help predict early recovery or complications. It may help doctors better understand how patients will do after surgery.
Antalya, Please Select:Ages 18 years+ - NCT07497633Enrolling by invitation
SCAD study at Mayo Clinic
This study is for people who have a scheduled appointment at Mayo Clinic for SCAD (a tear in a heart artery). It looks at how SCAD affects people over time, and why it happens.
Rochester, MinnesotaAges 18–99 - NCT06645327Recruiting
A study on monitoring brain blood flow during heart surgery
This trial tests a new way to monitor blood flow in the brain during heart bypass surgery. It may help patients who need coronary artery bypass grafting (CABG) with a heart-lung machine.
Hershey, PennsylvaniaAges 18 years+ - NCT07494643Recruiting
Fluid response in children on low-tidal-volume ventilation
This study checks if giving fluids helps children on a ventilator with circulation problems. Doctors will use ultrasound to see how the heart responds to a small fluid boost.
AmiensAges birth–15 years - NCT06019169Recruiting
Yoga for Heart Failure: Improving Quality of Life
This study tests if practicing yoga can improve quality of life and well-being for people with stable heart failure. You can join whether you are new to yoga or have done a little before.
ParisAges 18 years+ - NCT04545112Enrolling by invitation
Testing a new heart bypass graft in people needing multi-vessel CABG
This study tests a new way to connect a bypass graft during heart bypass surgery for people with blocked heart arteries. The goal is to see if the new graft can be safely placed and works well enough to improve outcomes compared with the standard approach.
LeuvenAges 18 years+ - NCT07125001Recruiting
Mango study for Hispanic/Latino teens' health
This study looks at whether eating mango every day for 12 weeks can improve gut health and heart health in Hispanic/Latino teens who are overweight. Participants will be asked to eat a mango product and take daily photos.
Davis, CaliforniaAges 12–19 - NCT04528511Recruiting
Studying new atrial fibrillation after heart attack
This study looks at how often atrial fibrillation happens soon after an acute heart attack, and who is most at risk. It may help doctors identify patients who need closer heart-rhythm monitoring after a hospital heart attack.
Kaifeng, HenanAges 18 years+ - NCT07482930Recruiting
Nerve stimulation and breathing test study in healthy adults
This study tests if a gentle nerve stimulation device placed on the ear can change how you breathe during a lung function test. It is only for healthy volunteers aged 18–40 who have no heart, lung, nerve, or mental health conditions.
SinopAges 18–40 - NCT07210723RecruitingPhase 2/Phase 3
Study of danicamtiv for genetic and familial dilated cardiomyopathy
This trial tests if danicamtiv can improve heart function in people with dilated cardiomyopathy caused by certain genetic changes. It may help those who have stable symptoms but still need more treatment options.
Birmingham, AlabamaAges 18 years+
Common questions
- How many heart & circulation clinical trials are recruiting?
- Clin2 is tracking 9,973 recruiting cardiology studies from the U.S. registry right now, out of 15,205 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.