Find NHLBI Clinical Trials

Search selected NHLBI-supported clinical trials and observational studies by condition, location, or age group. You can also view the complete list of NHLBI-funded studies at ClinicalTrials.gov.

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Showing 11 - 20 out of 20 results
Recruiting
Minnesota
Are you a Minnesota resident with hypertrophic cardiomyopathy? This study aims to find out how common it is for people with hypertrophic cardiomyopathy to also have sleep apnea. Hypertrophic cardiomyopathy is a disease that causes the heart muscle to thicken. Participants will also wear a heart rhythm monitor to help researchers learn whether sleep apnea is linked to arrhythmia. The study seeks healthy volunteers as well as participants in the Hypertrophic Cardiomyopathy Registry. To participate in this study, you must not have had a catheter ablation procedure to treat atrial fibrillation, had surgery to replace your heart valves, or been treated for sleep apnea. The study is located in Rochester, Minnesota.
Adult, Older Adult
Accepting Healthy Volunteers
Recruiting
Have you been diagnosed with peripartum cardiomyopathy and are within 5 months of your due date? This study is evaluating the effectiveness of a medicine called bromocriptine to treat peripartum cardiomyopathy, or weakness of the heart muscle that occurs during or shortly after pregnancy. To participate in this study, you must be at least 18 years old, diagnosed with peripartum cardiomyopathy, and within 5 months of your delivery date. This study takes place in Pittsburgh, Pennsylvania.
Adult, Older Adult
Female
Recruiting
Rhode Island
Have you recently been diagnosed with Takotsubo Syndrome? This study aims to investigate the short- and long-term effects of takotsubo syndrome, sometimes referred to as broken heart syndrome. Usually, takotsubo syndrome is a temporary heart condition that is caused by either emotional or physical stress. To participate in this study, you must have a new diagnosis of takotsubo syndrome and be at least 18 years old. This study takes place in Providence, Rhode Island.
Adult, Older Adult
Recruiting
Georgia
Do you have cardiomyopathy that has led to moderate or severe mitral regurgitation? This study is exploring the best surgical technique to repair mitral regurgitation by comparing two procedures called undersizing mitral annuloplasty (UMA) and papillary muscle approximation (PMA). A UMA is a common procedure that involves implanting a prosthetic ring onto the mitral valve to stop the valve from leaking. A PMA is a newer technique in which a suture draws together the two muscles that connect the mitral valve to the heart muscle prior to performing UMA. To participate in this study, you must be 18 years old or older and have never had a mitral valve repair procedure. This study takes place in Atlanta, Georgia.
Adult, Older Adult
Recruiting
Florida
Are you an adult who does not have high blood pressure and is interested in research? This study will investigate how the brain regulates the body’s response to stress and how infection with HIV or pre-hypertension affects regulation. Your heart and brain activity will be measured while you are at rest, during a mentally stressful task, and while you feel angry. The study will also test whether a breathing exercise improves regulation. People with and without HIV and pre-hypertension will be included. To participate in this study, you must be between 21 and 65 years old and not have high blood pressure. This study is located in Miami, Florida.
Adult, Older Adult
Accepting Healthy Volunteers
Recruiting
North Carolina
Are you an adult who gets little exercise and sits a lot every day? If you sit for more than 8 hours a day and exercise less than 90 minutes per week, this study may interest you. Researchers want to see if walking or standing breaks during long sitting periods can make your heart healthier. To take part in this study, you must be 36 to 55 years old. You also should be able to walk four blocks and go up two flights of stairs. The study is taking place in Chapel Hill, North Carolina.
Adult
Accepting Healthy Volunteers
Recruiting
Wisconsin
The purpose of the research is to understand structural plaque abnormalities that make a carotid plaque unstable and brake off (embolize) which would help to predict and treat individuals who are likely to suffer not only classic episodic major strokes but also cognitive impairment.
Adult, Older Adult
Recruiting
Minnesota
Adults with stroke-related disability spend more time sedentary than adults without stroke-related disability, which places them at risk for poor cardiovascular health outcomes. Few interventions are designed to reduce post-stroke sedentary time.

The purpose of this research is to test whether the teleABLE (Activating Behavior for Lasting Engagement) Intervention is feasible and acceptable to adults within the first 12 months post-stroke. The hypothesis is that teleABLE can be feasibly delivered using videoconferencing within the first 12 months post-stroke. 10 participants will complete assessments and activity monitoring (activPAL micro3) at 0 (baseline) and 8 (post-intervention)-weeks. Participants will complete 12 sessions of the teleABLE intervention.

Findings from this study will be used to guide the intervention protocol in the planned next phase of this research.
Adult, Older Adult
Recruiting
Minnesota
Are you an adult who has uncontrolled high blood pressure? This study will see whether an early notification system for health professionals can help manage patients’ high blood pressure, especially among those who have had a stroke or have an increased risk of stroke. To participate in this study, you must be between 18 and 85 years old and have high blood pressure that is not controlled by medicine and lifestyle changes. This study is enrolling native English, Spanish, or Hmong speakers. The study is located in Minneapolis, Minnesota.
Adult, Older Adult
Recruiting
Did you develop atrial fibrillation after coronary artery bypass graft (CABG) surgery? Did you develop atrial fibrillation after a coronary artery bypass grafting (CABG) surgery? This study is looking at how well oral anticoagulation medicines work to prevent complications, such as blood clots and heart attack, for patients who experience post-operative atrial fibrillation (POAF). This study is in multiple locations around the country.
Adult, Older Adult