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 82 results
Recruiting
This is a multi-center study enrolling patients suspected or newly diagnosed with myelodysplastic syndromes (MDS), myelodysplastic syndromes/myeloproliferative neoplasms (MDS/MPN) overlap disorder, or idiopathic cytopenia of undetermined significance (ICUS). Participants will be followed long term. Clinical data, blood, and tissue samples will be collected to establish a biorepository to facilitate the study of the natural history of MDS.
Adult, Older Adult
Recruiting
North Carolina
Tennessee
The study is designed to assess the usability of a novel CPAP human interface compared to a traditional nasal mask. Human subjects will interact with two different CPAP interfaces including a traditional CPAP mask and the 2nd generation DreamPort-Eclipse. Subjects will be requested to put on each of the different CPAP interface options a total of three times for a total of 6 trials. The order of device will be randomized.
Adult, Older Adult
Accepting Healthy Volunteers
Recruiting
Tennessee
This is a single-center, parallel-arm, blind, sham-controlled, feasibility randomized controlled trial (RCT) to be conducted in healthy cesarean-born infants. Eligible infants will be randomized 1:1 to have their nose swabbed with either maternal vaginal secretions or a sterile swab (intervention vs. control group, respectively) following birth by cesarean section (C-section). The main hypothesis is that conducting an RCT assessing the utility of vaginal seeding in modifying the early-life upper respiratory tract (URT) microbiome of infants born by C-section is feasible and that the intervention is safe.
Adult
Female
Recruiting
Tennessee
The investigators propose to study the relationship between right ventricle (RV) steatosis and RV function, exercise capacity, and outcomes in humans with pulmonary arterial hypertension (PAH) and to identify potential drivers of lipid accumulation.
Adult, Older Adult
Recruiting
Tennessee
The study is to investigate that the worsening orthostatic tachycardia and symptoms after glucose ingestion in POTS patients are due to a greater increase in splanchnic venous capacitance and excessive blood pooling during an orthostatic challenge.
Adult
Accepting Healthy Volunteers
Recruiting
Tennessee
This study aims to learn about the effects of continuous positive airway pressure (CPAP) on people with autonomic failure and high blood pressure when lying down (supine hypertension) to determine if it can be used to treat their high blood pressure during the night. CPAP (a widely used treatment for sleep apnea) involves using a machine that blows air into a tube connected to a mask covering the nose, or nose and mouth, to apply a low air pressure in the airways.
Adult, Older Adult
Recruiting
Tennessee
This work will address clinical unmet needs for patients with lipedema using advanced magnetic resonance imaging (MRI) methods, in sequence with portable clinical tools, by testing fundamental hypotheses regarding potential screening methods, lymphatic therapy, and vascular dysfunction in patients with lipedema.
Adult, Older Adult
Accepting Healthy Volunteers
Female
Recruiting
Tennessee
The Investigators propose a randomized trial of smart texts versus usual care for 6 months. The Investigators will randomize 100 PAH patients to the mHealth intervention or usual care. The Investigators will test the effect of a text-based mHealth intervention on HRQOL in PAH using the PAH-specific emPHasis-10 questionnaire. The Investigators will also test the effect of an mHealth intervention on exercise capacity, measured by a supervised home-based 6MWD test. Finally, the Investigators will examine the effect of the intervention on time to clinical worsening (composite of PAH therapy escalation, PAH hospitalization, and death) one year after randomization.
Adult, Older Adult
Recruiting
Tennessee
Recent evidence supports lymphatic regulation of tissue sodium handling, however fundamental gaps persist in knowledge regarding the role of lymphatics in human diseases of sodium dysregulation. The goal of this work is to apply novel, noninvasive imaging tools to measure relationships between lymphatic function and tissue sodium in patients with well-characterized lymphedema. Findings are intended to inform mechanisms of lymphatic clearance of tissue sodium, and provide novel imaging biomarkers of lymphedema progression and treatment response.
Adult, Older Adult
Female