Cardiology
Heart & circulation clinical trials
Heart disease, blood pressure, and disorders of the blood vessels and circulation. We’re tracking 9,976 recruiting studies in this area right now.
By phase
- Not applicable7,959
- Phase 2483
- Phase 4479
- Phase 3447
- Phase 1361
- Phase 1/Phase 2161
- Phase 2/Phase 386
Top conditions
- Stroke841
- Heart Failure567
- Hypertension401
- Cardiovascular Diseases390
- Coronary Artery Disease372
- Multiple Myeloma334
- Atrial Fibrillation268
- Ischemic Stroke201
- Atrial Fibrillation (AF)140
- Acute Ischemic Stroke137
- Myocardial Infarction102
- Pulmonary Hypertension100
- Congenital Heart Disease85
- 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
- California460
- Alabama197
- Massachusetts183
- Arizona174
- New York161
- Florida145
- Maryland120
- Illinois119
- Minnesota119
- Texas118
Recruiting studies9,973 total
- NCT06621004Enrolling by invitationEarly Phase 1
Low dose magnesium for nose or sinus surgery
This trial tests if a low dose of magnesium sulfate can help during nose or sinus surgery. It may reduce pain or side effects.
CairoAges 20–40 - NCT06551168Recruiting
Heat adaptation study for female cyclists
This study tests how female cyclists adapt to heat during exercise. You'll train in a controlled warm environment to see how your body handles heat, which may help improve endurance.
Langley, British ColumbiaAges 18–55 - NCT06536647Recruiting
Contactless vital sign check for ER triage
This trial uses a camera to measure your vital signs (like heart rate) without touching you, right in the emergency room. The goal is to see if this contactless method can help quickly assess patients when they arrive.
Hong Kong, None SelectedAges 18 years+ - NCT06458452Recruiting
Virtual Reality Training for Life Support
This trial tests using virtual reality to make life-support training more realistic. It is for specific anesthesiology students who have not had this training before.
IstanbulAges 20–22 - NCT06379347Recruiting
Fluid status check with ultrasound in hospitalized patients
This study uses ultrasound to measure fluid levels in hospitalized patients. It helps doctors understand how well your body is managing fluids, which can guide treatment decisions.
Almere StadAges 18 years+ - NCT05534516Enrolling by invitation
Study of what happens in a hospital heart-monitor unit
This study looks at normal body changes while patients are cared for in a telemetry (heart-monitoring) hospital unit. It may help doctors understand what measurements mean during acute illness and medication or IV fluid treatment.
Jacksonville, FloridaAges 18–65 - NCT05336565Recruiting
COVID-era heart illness patterns in adults with cardiovascular disease
This study looks at how often heart problems happened in adults with cardiovascular disease during the COVID-19 pandemic period. It may help researchers understand what factors during the pandemic affected heart health.
TomskAges 18 years+ - NCT05188079Recruiting
Test whether quick nitrate supplements change blood vessel function
This study checks how an acute (short-term) nitrate supplement affects how well your blood vessels work. It may help researchers understand whether these effects differ among Hispanic, Black, and White participants, in otherwise healthy adults.
Austin, TexasAges 18–65 - NCT05108376Recruiting
Predictive monitoring for high-risk hospital patients
This trial tests a new way to closely watch high-risk adults in the hospital and help the care team act sooner if a patient seems to be getting worse. It aims to see if the monitoring system works well and how it affects early clinical decisions.
Ottawa, OntarioAges 18 years+ - NCT04119791Recruiting
Study whether wild rice improves heart health
This study looks at whether eating wild rice can improve cardiovascular (heart and blood vessel) health. It is testing this in generally healthy adults who fit specific health and lifestyle criteria.
Winnipeg, ManitobaAges 20–40 - NCT03398304Enrolling by invitation
Exercise study to track body changes during activity
This study measures how your body responds over time while you do a controlled exercise session. It may help researchers better understand normal changes in healthy adults during different exercise levels.
Nashville, TennesseeAges 18–49 - NCT07784647Recruiting
Triple pill for blood pressure control study
This study tests a combination pill containing three blood pressure medicines to see if it helps people with high blood pressure control it better. It aims to make treatment simpler by using one pill instead of several.
Abuja, Federal Capital TerritoryAges 18 years+ - NCT07324278Recruiting
Arm rehab with mirror exercises after stroke
This study tests a new kind of arm exercise that uses a mirror to help your brain recover movement after a stroke. It may help you improve arm function if you have some movement already.
Kaohsiung City, Yanchao DistrictAges 20–80 - NCT06823635Recruiting
Catheter closure of ventricular septal defects
This study gathers information on a procedure to close a specific type of heart hole using a device inserted through a catheter. It aims to evaluate how well this procedure works in different medical centers.
CopenhagenAges 1 month+ - NCT07746336RecruitingPhase 4
Guiding heart ablation with 3D heart mapping
This trial tests a new heart-mapping technique to help doctors treat a fast heart rhythm caused by heart disease. It might improve the precision of the procedure, making it safer and more effective for patients with this condition.
BarcelonaAges 18–99 - NCT07783984Recruiting
Comparing two procedures for persistent atrial fibrillation with enlarged left atrium
This study compares two procedures to treat persistent atrial fibrillation in people whose upper left heart chamber is enlarged: catheter ablation (a minimally invasive procedure using a tube through a vein) versus thoracoscopic ablation (a surgical approach using small chest incisions). The goal is to see which method better restores a normal heart rhythm.
Seoul, SeoulAges 19 years+ - NCT07784296Recruiting
Triple combination therapy for high blood pressure in Korean adults
This study tests a three-drug combination pill for high blood pressure in Korean adults. It aims to see if this treatment is safe and effective.
Gyeonggi-doAges Any age - NCT00001853Recruiting
Heart disease risk study in Black adults
This study looks at how obesity and blood fat (triglyceride) levels affect heart disease risk differently in Black men and women. You may join if you're a healthy Black adult between 18 and 70, without diabetes.
Bethesda, MarylandAges 18–70 - NCT07723300Recruiting
Self-guided arm therapy for stroke recovery
This trial tests a self-supervised arm therapy program for people who had a stroke at least two weeks ago. It aims to improve use of the weaker arm through intensive practice at home.
Columbus, OhioAges 18–85 - NCT07785765Enrolling by invitation
Exercise study for people recovering from SCAD
This study tests whether a supervised exercise program is safe and helpful for people who have had a spontaneous coronary artery dissection (SCAD), a tear in a heart artery. It may help improve your recovery and heart health.
OsloAges 18 years+ - NCT07052461Recruiting
Blood flow study in ICU patients after heart surgery
This study looks at blood flow patterns in patients after non-emergency heart surgery to see if they relate to recovery in the ICU. It uses a special ultrasound to check blood vessels in the belly and leg.
BaselAges 18 years+ - NCT02998229Recruiting
Device trial for wide-neck brain aneurysms at branch points
This trial studies an in-the-aneurysm device placed through a blood vessel to treat certain wide-neck brain aneurysms. It may help prevent aneurysm complications and reduce the risk of needing other procedures, but eligibility depends heavily on your aneurysm shape and health.
Los Angeles, CaliforniaAges 18–75 - NCT05677100Recruiting
Aortix device for acute heart failure
This trial is testing a small pump placed in the aorta to help the kidneys remove extra fluid when standard IV diuretics aren't working well enough for severe heart failure. It may help you if you're hospitalized and still very congested (swollen, fluid buildup) despite strong water pills.
Phoenix, ArizonaAges 21 years+ - NCT06168071Enrolling by invitation
Nerve stimulation in children during EEG monitoring
This trial tests if gentle nerve stimulation through the ear can help diagnose or treat seizures in children. It is for children who are already in the hospital for an EEG to monitor brain activity.
St Louis, MissouriAges 7–18
Common questions
- How many heart & circulation clinical trials are recruiting?
- Clin2 is tracking 9,976 recruiting cardiology studies from the U.S. registry right now, out of 15,179 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.