Cardiology
Heart & circulation clinical trials
Heart disease, blood pressure, and disorders of the blood vessels and circulation. We’re tracking 9,982 recruiting studies in this area right now.
By phase
- Not applicable7,962
- Phase 2481
- Phase 4481
- Phase 3447
- Phase 1361
- Phase 1/Phase 2163
- Phase 2/Phase 387
Top conditions
- Stroke844
- Heart Failure566
- Hypertension400
- Cardiovascular Diseases389
- Coronary Artery Disease370
- Multiple Myeloma332
- Atrial Fibrillation267
- Ischemic Stroke200
- Atrial Fibrillation (AF)141
- Acute Ischemic Stroke139
- Pulmonary Hypertension100
- Myocardial Infarction99
- 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
- California465
- Alabama197
- Massachusetts182
- Arizona173
- New York162
- Florida144
- Maryland120
- Minnesota120
- Illinois118
- Texas118
Recruiting studies9,979 total
- NCT03934957Recruiting
Study of health in people living in Hamburg
This study follows adults living in Hamburg to better understand health and health-related factors over time. You may help researchers learn what influences health in this age group.
HamburgAges 45–74 - NCT03936361RecruitingPhase 3
Statins after a stroke bleed in the brain (Phase 3)
This trial studies whether continuing or stopping statin medicine after a spontaneous bleeding stroke in the brain (called lobar ICH) leads to better outcomes. It may help clarify if statins are safer to stay on—or better to pause—after this type of event.
Boston, MassachusettsAges 50 years+ - NCT03936647Recruiting
Testing a WEB device inside brain aneurysms
This trial studies whether placing a WEB device inside certain brain aneurysms can control the aneurysm and reduce risk. You might be considered if your aneurysm fits size and severity limits and your doctor thinks the WEB approach is appropriate.
Edmonton, AlbertaAges 18 years+ - NCT03938155Recruiting
Risk check program for older women in Manitoba
This trial looks at how well a health risk assessment can identify heart and blood-vessel problems in women 55 and older. It may help doctors target prevention earlier, which could lower the chance of serious events.
Winnipeg, ManitobaAges 55 years+ - NCT03942081Recruiting
Imaging test for diabetic foot wounds
This study looks at how images of a current foot wound in people with diabetes can be used to help doctors. It may help improve how foot ulcers are evaluated while you receive usual care.
Iowa City, IowaAges 21–100 - NCT03945968Recruiting
Risk scores after abdominal surgery for people with health conditions
This study looks at how other health problems affect the chance of postoperative complications after abdominal surgery. It aims to help doctors better predict risk and decide on the safest care for you.
ArkhangelskAges 18 years+ - NCT03951311Recruiting
Diet and lifestyle study for people with weaker heart pumping
This study looks at how metabolic changes, diet, and lifestyle patterns affect heart failure. It may help find ways to improve symptoms and health by targeting diet and daily habits.
Shanghai, Shanghai MunicipalityAges 14–90 - NCT03951467Recruiting
Health literacy support to help you follow medical advice
This study tests whether a communication tool matched to your health literacy level can improve how well people follow medical recommendations after an acute episode. It may help you understand your care plan and take the right next steps at home.
BronAges 18 years+ - NCT03955731Recruiting
OCT imaging-guided Magmaris treatment after heart attack
This study tests whether using OCT (a special camera scan inside the artery) to guide Magmaris in people with a recent heart attack can improve how well the artery heals. It may help reduce problems such as re-narrowing, but only certain artery and patient conditions make someone eligible.
Leuven, BrabantAges 18–70 - NCT03959748Recruiting
Pulmonary hypertension patients’ heart-lung pressure database study
This study builds a database of people with pulmonary arterial hypertension or chronic thromboembolic pulmonary hypertension. It may help doctors better understand these conditions in the Polish population and improve future care decisions.
KrakowAges 3 months+ - NCT03968393RecruitingPhase 4
Blood thinner to prevent stroke after stress-related irregular heartbeats
This trial tests whether taking a blood thinner can lower the risk of stroke in people who had atrial fibrillation (an irregular heartbeat) that happened temporarily around a stressful illness or surgery. It looks especially at people at higher risk for stroke after that episode.
Los Angeles, CaliforniaAges 55 years+ - NCT03962023Recruiting
Study of heart ultrasound features in mitral valve leakage
This study looks at how findings on a standard heart ultrasound (transthoracic echocardiography) can predict outcomes for adults with mitral valve leakage caused by valve prolapse. It may help doctors better understand which ultrasound features matter most, using past and future medical records.
Lomme, NordAges 18 years+ - NCT03966443Recruiting
Fluciclovine PET/CT scan for people with multiple myeloma
This trial studies how a special PET/CT scan (using fluciclovine) may help doctors evaluate multiple myeloma. You might be eligible if you’re a candidate for stem cell transplant (ASCT).
OsloAges 18 years+ - NCT03972956Recruiting
Collecting samples during cancer or surgery visits
This trial looks at collecting (taking) medical samples from people who need surgery for colorectal cancer, stomach (gastric) cancer, or a non-cancer condition. It may help researchers better understand these diseases and improve how treatment is planned.
Wuhan, HubeiAges 18–80 - NCT03972644Recruiting
Early valve replacement for people with severe but silent aortic narrowing
This trial tests whether replacing a badly narrowed aortic valve earlier—even when you feel fine—can prevent future heart problems. It compares early valve replacement (through a catheter or surgery) versus standard watchful waiting.
Odense, FynAges 18–85 - NCT03975998Recruiting
Early mitral valve repair versus watchful waiting
This trial compares doing mitral valve repair early with closely monitoring symptoms instead, for people who have severe leakage but feel well. It may help determine whether early surgery prevents future heart problems without causing unnecessary risk.
AmsterdamAges 18–75 - NCT03974750Recruiting
Robotics training for arm skills after stroke
This study tests whether a robotic training program can help people relearn arm and hand skills after a stroke. It also includes healthy volunteers to compare learning and movement changes.
Yvoir, NamurAges 18–90 - NCT03978377Recruiting
Checks heart and lung effects after chest radiation
This study looks at how chest radiation treatment affects the heart and lungs in people with certain lung or esophagus cancers. It may help doctors better predict and prevent these side effects during curative (aimed at cure) radiotherapy.
LeuvenAges 18 years+ - NCT03980457Recruiting
Exoskeleton walking therapy for stroke recovery
This trial studies whether assisted walking training with an exoskeleton can improve recovery after stroke, especially for walking and daily function. You may be offered therapy once you are medically stable, able to stand, and able to participate safely.
Oklahoma City, OklahomaAges 18–90 - NCT03981107Recruiting
Hands-only CPR vs standard CPR after witnessed cardiac arrest
This study compares two ways of doing CPR for adults who collapse outside the hospital and are not breathing normally: hands-only CPR versus standard CPR. The goal is to see which approach improves survival after witnessed cardiac arrest.
BergamoAges 18 years+ - NCT03983603Recruiting
Plant stanols and asthma symptoms prevention
This trial tests whether eating plant stanols (a natural substance found in some foods) can help prevent asthma symptoms in people with stable allergic asthma. You would need to take a daily chew and avoid certain cholesterol-lowering products during the study.
Maastricht, LimburgAges 18–70 - NCT03987633Recruiting
Study links health records and samples to understand health gaps
This study asks people affected by a specific illness (or their family member) to share saliva (and sometimes blood) and answer health and quality-of-life questions. The goal is to better understand and reduce health inequality by matching new information with medical records.
Wolverhampton, West MidlandsAges 6 years+ - NCT03990558Recruiting
Testing ways to improve waking after a brain bleed
This trial studies treatments to help people regain consciousness after an intracerebral hemorrhage (a bleeding stroke inside the brain). It focuses on adults who are unresponsive to commands within 48 hours, likely from certain bleeding locations, and who meet specific safety and language requirements.
Miami, FloridaAges 18 years+ - NCT03992560Recruiting
Cardiac MRI-guided device implantation versus standard CRT
This trial compares two ways of placing a heart rhythm device: guiding the procedure with a cardiac MRI versus using the usual approach. It aims to see which method improves heart function and outcomes for people with a certain type of heart failure due to blocked heart arteries.
LondonAges 18 years+
Common questions
- How many heart & circulation clinical trials are recruiting?
- Clin2 is tracking 9,982 recruiting cardiology studies from the U.S. registry right now, out of 15,268 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.