Clinical trials
Cardiac clinical trials
Below are recruiting cardiac clinical trials, each written for real people, not researchers. We’re tracking 1,291 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04915261RecruitingPhase 4
Lenient versus strict instructions after heart device surgery
This trial compares two styles of “post-surgery instructions” after implantation of a new heart device lead. It may help determine which approach is better for patients’ recovery and safety after the procedure.
Ottawa, OntarioAges Any age - NCT04856059Recruiting
MRI study for early heart changes in Fabry disease
This study looks at early structural and tissue changes in the heart using a special type of MRI scan in adults with Fabry disease. It may help doctors understand changes earlier and better track heart involvement over time.
Toronto, OntarioAges 18 years+ - NCT04913649RecruitingPhase 4
IV iron for anemia after heart surgery in older adults
This trial tests whether giving iron through a vein after heart surgery helps treat postoperative anemia (low red blood cells) in people age 70 and older. It may improve recovery by correcting low iron levels after surgery.
BredaAges 70 years+ - NCT04299828Recruiting
Study of inflammation activity during complex heart surgery
This study measures how active white blood cells and inflammation are during complex heart surgery using a heart-lung machine. It may help doctors better understand what triggers inflammation during surgery and how to improve care.
Boston, MassachusettsAges Any age - NCT04795193Enrolling by invitation
Minithoracotomy vs open surgery for multiple blocked heart arteries
This trial compares two types of bypass surgery for people with multiple blocked heart arteries, to see which one better improves quality of life and how well the bypasses stay open. You may be assigned based on your preferences, and the study also tracks heart scan and follow-up results.
Beijing, Beijing MunicipalityAges 25–85 - NCT04849754Recruiting
Monitoring heart amyloidosis with a special scan
This study looks at how a type of heart condition called transthyretin cardiac amyloidosis changes over time, using a special imaging test called a bone scan. The goal is to see if the scan can help track the disease and potentially improve care.
LilleAges 18 years+ - NCT04840797Recruiting
Registry for HeartStart HS1 use during suspected cardiac arrest
This study collects real-world information about people who had a suspected cardiac arrest and where the HeartStart HS1 defibrillator was used with specific Philips pad types. It may help improve how emergency teams respond in the future.
Pittsburgh, PennsylvaniaAges Any age - NCT04823663Recruiting
SOCRATES heart rhythm device study registry
This study keeps a registry (a structured record) of people who get certain heart rhythm or heart device procedures using specific Boston Scientific products. The goal is to track outcomes and help improve how these devices are used in real-world care.
JetteAges Any age - NCT03746964Recruiting
MRI study of the heart’s aorta before planned surgery
This study uses a special MRI scan to measure how the ascending aorta (a large blood vessel) moves and behaves before planned surgery. It may help doctors better understand the mechanics of an aortic aneurysm and improve future surgical planning.
DijonAges 18 years+ - NCT03858777Recruiting
Blood test for heart inflammation in sarcoidosis
This study checks whether a blood “cell-free DNA” test can show when the heart is inflamed in people with cardiac sarcoidosis. It may help doctors detect active heart involvement earlier and track how disease is doing.
Iowa City, IowaAges 18 years+ - NCT04746729Recruiting
Using past radiation records to study heart and lung effects in kids
This study looks back at children’s radiation treatments to understand long-term heart and lung side effects from modern radiotherapy. It may help doctors better plan safer radiation for future patients.
LeuvenAges Up to 22 years - NCT04770012RecruitingPhase 3
Aspirin or clopidogrel after heart transplant
This study tests antiplatelet medicines (like aspirin or clopidogrel) in people who have had a heart transplant. The goal is to see if these medicines can safely help prevent blood-related complications after transplant.
Vancouver, British ColumbiaAges 18 years+ - NCT04707794Recruiting
Preventing confusion after non-heart surgery in older adults
This study looks at how often older adults develop sudden confusion (delirium) after non-heart operations under general anesthesia. It may help doctors better predict who is at risk and improve care after surgery.
New Delhi, National Capital Territory of DelhiAges 65 years+ - NCT04604418Recruiting
Tracking outcomes during non-heart procedures in children with heart defects
This study looks at how children with congenital heart disease do during routine non-heart procedures, including medical or minor treatments that are not heart-related. It also measures how much health care they use afterward, which may help improve care planning for families.
Los Angeles, CaliforniaAges Up to 21 years - NCT04676100Enrolling by invitation
International registry for cardiac rehabilitation programs
This study collects information about cardiac rehabilitation (CR) programs in lower-resource areas. It helps improve how CR is delivered and understood, especially where healthcare resources and awareness are limited.
DohaAges 18 years+ - NCT04672551Recruiting
EMDR therapy for PTSD after a heart attack
This trial studies whether EMDR (a structured therapy that helps process distressing memories) can reduce PTSD symptoms in people who developed PTSD after a cardiac event. It may help you feel less overwhelmed by memories and stress related to the heart event.
ZurichAges 18–70 - NCT04493996Recruiting
Cognitive training before heart surgery to protect memory
This trial tests whether brain-focused cognitive training before elective heart surgery can help reduce memory and thinking problems afterward. If you qualify, you may do language-based thinking exercises and complete short brain tests around the time of surgery.
Bad NauheimAges 18 years+ - NCT04462380Recruiting
AI study for patients after cardiac arrest
This trial uses artificial intelligence to analyze computerized reports from patients who have recovered from cardiac arrest. It aims to help doctors better understand and treat different causes of cardiac arrest.
NiceAges 18 years+ - NCT04180085RecruitingPhase 2
Belatacept to protect kidneys in heart transplant patients
This trial studies whether belatacept can be used after a heart transplant to help protect kidney function over time. It focuses on people who already have (or are at risk for) worsening kidney function after transplant, while avoiding those with certain infections or rejection concerns.
BordeauxAges 18 years+ - NCT04257994Recruiting
Study how heart cell connections differ in inherited rhythm problems
This study looks at how proteins that connect heart cells are distributed in people with inherited heart rhythm disorders (and some family members who may carry the gene). It aims to better understand the biology behind these conditions, which may help improve risk assessment and future care.
LondonAges 18 years+ - NCT04189822Enrolling by invitation
Heart rhythm genetic registry and blood sample bio bank
This study is building a Canadian database and tissue/blood bank for people and families with inherited heart rhythm conditions (and some inherited heart muscle diseases). It collects consented health and genetic information to help researchers better understand who is at risk and how these conditions work.
Vancouver, British ColumbiaAges Any age - NCT04198792Recruiting
Finding outcomes after ECMO for heart-related emergencies
This study looks at what helps determine survival and better brain function after people are treated with ECMO, a heart-lung support machine. It may help doctors understand who is most likely to do well after this kind of emergency treatment.
GothenburgAges 16 years+ - NCT01076660Recruiting
MRI study to predict sudden cardiac death risk
This trial uses heart MRI images and measurements to look for warning signs that could predict sudden cardiac death. It focuses on people with significantly reduced heart pumping function who are being considered for an ICD to prevent sudden death.
Newark, DelawareAges 21–80 - NCT04250857Recruiting
HeartStart AED event registry for suspected sudden cardiac arrest
This study records information about people who were suspected of having a sudden heart stoppage. It may help improve how emergency responders use this specific AED (automated defibrillator).
Monroeville, PennsylvaniaAges Any age
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Common questions
- Are there clinical trials for cardiac?
- Yes. Clin2 currently lists 1,291 recruiting cardiac studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a cardiac trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a cardiac trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.