Cardiology
Heart & circulation clinical trials
Heart disease, blood pressure, and disorders of the blood vessels and circulation. We’re tracking 9,613 recruiting studies in this area right now.
By phase
- Not applicable7,634
- Phase 2471
- Phase 4471
- Phase 3438
- Phase 1350
- Phase 1/Phase 2161
- Phase 2/Phase 388
Top conditions
- Stroke796
- Heart Failure535
- Hypertension389
- Cardiovascular Diseases374
- Coronary Artery Disease362
- Multiple Myeloma328
- Atrial Fibrillation259
- Ischemic Stroke190
- Atrial Fibrillation (AF)154
- Acute Ischemic Stroke139
- Pulmonary Hypertension104
- Myocardial Infarction96
- Congenital Heart Disease83
- Peripheral Arterial Disease80
- Stroke, Ischemic77
- Aortic Valve Stenosis76
- Obesity74
- Acute Coronary Syndrome73
Leading sponsors
- Mayo Clinic93
- Assistance Publique - Hôpitaux de Paris88
- National Taiwan University Hospital67
- 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
- California449
- Alabama195
- Arizona182
- Massachusetts174
- New York166
- Florida141
- Texas122
- Maryland118
- Minnesota118
- Illinois111
Recruiting studies9,613 total
- NCT05908955Recruiting
Atrial fibrillation ablation with extra vein targeting
This trial studies a modified ablation procedure that targets the superior vena cava in addition to the pulmonary veins to help stop episodes of paroxysmal (coming and going) atrial fibrillation. It may help people whose symptoms continue despite antiarrhythmic medicines.
Beijing, Beijing MunicipalityAges 40–75 - NCT04731558RecruitingPhase 4
Blood clot prevention before versus after liver surgery
This study compares two approaches to preventing blood clots around the time of liver surgery. If you’re having planned liver surgery, it may help doctors choose the safest timing and method for clot prevention.
HelsinkiAges 18 years+ - NCT05245877RecruitingPhase 4
Preventing blood clots before and after pancreatic surgery
This study compares two approaches to preventing blood clots around the time of pancreatic surgery. It may help lower the risk of dangerous clotting events after surgery, especially for people who are high risk.
TorontoAges 18–120 - NCT07404774Recruiting
stitch and laser treatment for hemorrhoids
This trial is testing a combined treatment for hemorrhoids that are causing symptoms. It uses a technique to stitch the hemorrhoid tissue back in place (suture mucopexy) plus a laser to shrink blood vessels. The goal is to see if this approach works well for people with grades II, III, or IV hemorrhoids, even if they've had other treatments before.
AthensAges 18 years+ - NCT07402018Recruiting
Aortic balloon pump study
This trial looks at how well the heart's pumping is helped by using an intra-aortic balloon pump, a device inserted to support blood flow in people with cardiogenic shock. It aims to learn more about how the device works and improve care.
Philadelphia, PennsylvaniaAges 18 years+ - NCT07401550Recruiting
Using a smartwatch to check heart health
This study uses a Fitbit smartwatch to track your heart activity and predict your risk for heart problems. You might help researchers learn how everyday wearable devices can spot early signs of heart disease.
Dublin, DublinAges 18 years+ - NCT07400406Recruiting
A new MRI test to see calcified heart arteries
This trial tests a special MRI using a contrast agent called ferumoxytol to better see calcium buildup in heart arteries. It may help people who need a coronary angiogram and have some calcium visible on a prior CT scan.
Nanjing, JiangsuAges 18–75 - NCT07400224RecruitingPhase 1/Phase 2
New PET imaging test for cancer, heart, or immune disease
This study tests a new type of PET scan using a special tracer called Al18F-NOTA-FAPI-04 to see if it can better detect cancer, heart disease, or immune system conditions. The goal is to find out how well this imaging method works for diagnosis or monitoring of these diseases.
BeijingAges 18–88 - NCT07402642Recruiting
Early Education to Lower Heart Attack Risk Factors
This trial tests if personalized education after a heart attack helps patients lower their future risk of heart problems. It focuses on people who had an emergency procedure to open blocked arteries.
Las Palmas de Gran Canaria, Las PalmasAges 18 years+ - NCT07399587RecruitingPhase 2/Phase 3
Optimizing heart failure treatment with two devices
This study tests whether using two implanted devices (CardioMems and BaroStim) can improve heart function and symptoms in people with advanced heart failure. It aims to help patients who are already on standard medications get even better results.
Riverhead, New YorkAges 18–80 - NCT07405671RecruitingPhase 4
Flecainide safety for heart patients with atrial fibrillation
This trial tests a heart rhythm drug called flecainide to see if it is safe for people who have both atrial fibrillation (an irregular heartbeat) and coronary artery disease (narrowed heart blood vessels). Participation could help doctors decide if this drug is a good treatment option for you.
AalstAges 18 years+ - NCT07400939Recruiting
Brain stimulation and hand movement training for stroke recovery
This trial tests if combining brain stimulation with watching hand movements can improve hand function in people who had a stroke 6 to 24 months ago. It may help you regain better use of your affected hand.
Kota Kinabalu, SabahAges 18–59 - NCT07399860RecruitingPhase 2
Botox before hemorrhoid surgery to reduce pain after surgery
This trial tests whether injecting botulinum toxin (Botox) into the anal muscle before hemorrhoid removal surgery can lower pain after the operation. It is for people with advanced hemorrhoids that have not gotten better with other treatments and who are already planning to have surgery.
Moscow, MoscowAges 18 years+ - NCT07399002Recruiting
Long Nagomi stent study for heart artery blockages
This trial tests a new long stent (Ultimaster Nagomi) for treating long blockages in the heart arteries. It aims to see how well the stent works in real-world patients who need a single stent for a long lesion.
CabueñesAges 18 years+ - NCT07398950Enrolling by invitation
AI screening for a heart condition called ATTR-CM
This study uses artificial intelligence (AI) to look at your heart tests (ECG and echo) and find people who might have a specific heart muscle disease called ATTR-CM. The goal is to catch it earlier so treatment can start sooner.
New Haven, ConnecticutAges 18 years+ - NCT07401771Recruiting
Exercise heart MRI in heart failure with preserved pumping strength
This study uses a special exercise MRI to see how the heart works during activity in people with a type of heart failure where the heart's pumping strength is normal. It also includes people with shortness of breath from other causes and healthy volunteers to compare results.
Rochester, MinnesotaAges 18–80 - NCT07398391Recruiting
Blood pressure care study in San Diego
This study tests a program to help people manage their blood pressure using video calls and home monitoring. You may join if you have high blood pressure and live in San Diego.
San Diego, CaliforniaAges 21 years+ - NCT07399912Enrolling by invitation
Home blood pressure check study for hypertension
This trial tests if home monitoring of blood pressure can help guide your doctor's decisions about your care. It might help you manage your hypertension more effectively.
Singapore, SingaporeAges 21 years+ - NCT07403630Recruiting
Tumor chemogenomic profiler for cancer patients of all ages
This trial uses a new testing platform to analyze the genes and proteins in your tumor, aiming to find the most effective treatments for people with cancer that has come back, is not responding to treatment, or has spread. It is designed for both children and adults with any type of blood cancer or solid tumor.
Palermo, PalermoAges 1 year+ - NCT07401186Recruiting
Stimulation to Improve Sensory Pathways in the Brain and Spine
This study tests whether using electrical stimulation during neck surgery can help improve how the brain and spinal cord process sensory information. It may offer new ways to help people with stroke-related weakness.
Pittsburgh, PennsylvaniaAges 21–75 - NCT07399977Recruiting
Blood test to guide blood thinner use in cancer
This study tests whether a blood test and computer program can help doctors decide how long you need to take blood thinners after a cancer-related blood clot. If you've been on a blood thinner for a few months and have certain cancers, this trial may offer a more personalized approach.
Basking Ridge, New JerseyAges 18 years+ - NCT07405333Recruiting
Coughing exercises vs breathing device after heart surgery in children
This study compares simple coughing exercises with a breathing device (incentive spirometry) to help children recover lung function faster after heart surgery. It may help reduce complications and shorten hospital stays.
Baghdad, Baghdad GovernorateAges 6–18 - NCT07405242Recruiting
Treatment for retrograde aortic dissection with a stent graft
This trial tests a stent-graft procedure for a specific type of aortic dissection where the tear starts in the arch or descending aorta and extends backward into the ascending aorta. It is for patients who are not good candidates for open surgery.
Shanghai, Shanghai MunicipalityAges 65 years+ - NCT07406412Recruiting
Hormones and heart health before and after ovary removal
This study looks at how hormones affect heart health and metabolism in women who are having their ovaries removed (for non-cancer reasons). It will help researchers understand the changes that happen after surgery and how to better manage health during this transition.
HelsinkiAges 35–50
Common questions
- How many heart & circulation clinical trials are recruiting?
- Clin2 is tracking 9,613 recruiting cardiology studies from the U.S. registry right now, out of 14,690 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.