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 1 - 10 out of 39 results
Recruiting
Maryland
Do you or your child have a lung disease? This study will investigate the genes involved in the breathing process and in the development of lung diseases such as asthma or sarcoidosis to improve understanding of the role they play. To participate in this study, you or your child must be between 2 and 90 years old. This study is located in Bethesda, Maryland, at the NIH Clinical Center.
All Ages
Accepting Healthy Volunteers
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
Wisconsin
Do you have a high-risk pregnancy? This study will investigate the use of a non-invasive scan called fetal magnetocardiography to detect potential problems in the fetus in five high-risk pregnancy conditions associated with stillbirth. The scan is normally used to look at fetal heart rhythms. To participate in this study, you must be at least 18 years old and pregnant with one of the following: having a stillbirth in a previous pregnancy, carrying identical twins, or having a fetus that has been diagnosed with major congenital heart disease, fetal hydrops, or fetal gastroschisis. This study takes place in Madison and Milwaukee, Wisconsin.
Adult, Older Adult
Female
Recruiting
Indiana
Are you a woman who is postmenopausal or a man older than 65? This study will investigate the effects of oral progesterone for older women and testosterone for older men on QT intervals. QT intervals that are increased by medicine can lead to dangerous heart rhythm problems. Researchers hope to learn more about why this happens and how to deliver safer doses. This study is located in Indianapolis, Indiana.
Adult, Older Adult
Accepting Healthy Volunteers
Recruiting
California
Massachusetts
New York
his trial will evaluate an oral drug discovered in a high throughput screen, which increases fetal globin protein (HbF and red blood cells expressing HbF)and messenger ribonucleic acid (mRNA) to high levels in anemic nonhuman primates and in transgenic mice.
Adult, Older Adult
Recruiting
Massachusetts
Sickle Cell Disease (SCD) impairs oxygen transport to tissue and causes endothelial injury. Thus, therapeutic interventions aim to improve both, but there is an unmet need for biomarkers to determine when intervention is necessary and evaluate the effectiveness of the chosen intervention in individual patients. This study proposes to monitor SCD and its treatment through their impact on cerebral hemodynamics, as the brain is one of the most vulnerable and consequential targets of the disease. Specifically, this study will optimize quantitative magnetic resonance imaging (MRI) and advanced optical spectroscopy techniques such as frequency-domain near-infrared and diffuse correlation spectroscopies (FDNIRS-DCS) to monitor 1) cerebral oxygen transport with measures of cerebral blood flow (CBF), cerebral oxygen extraction fraction (OEF) and cerebral metabolic rate of oxygen consumption (CMRO2) and 2) endothelial function with cerebrovascular reactivity (CVR).
Child, Adult
Recruiting
Maryland
Are you or your child at least 13 years old and have sickle cell disease? In this stidy, researchers are trying to find out if a new medication improves the success of a blood stem cell transplant. People 13 years old or older who are eligible for a blood stem cell transplant to treat sickle cell disease may be able to participate. Healthy family members over age 13 who are matched to transplant recipients are also needed to donate blood for the study. This study is taking place at the National Institutes of Health Clinical Center in Bethesda, Maryland.
All Ages
Accepting Healthy Volunteers
Recruiting
Maryland
Are you at least 18 years old and have sickle cell disease and taking the medication Hydroxyurea? For this study, researchers testing are tool for measuring oxygen levels, blood flow, and the makeup of skin and muscle in patients with sickle cell disease. To participate in this study, you must be at least 18 years old and have sickle cell disease and also be taking the medication Hydroxyurea. This study is taking place at the National Institutes of Health Clinical Center in Bethesda, Maryland.
Adult, Older Adult