Clinical Trials

Do you have heart failure with preserved ejection fraction (HFPEF)? This study is testing the efficacy of a diuretic medicine called spironolactone that stops your body from absorbing too much salt and keeps your potassium levels from dropping too low. Participants of this study must be between 50 and 99 years old and already taking diuretic medicine. This study takes place in multiple locations across the United States and Sweden.

Are you an adult with sickle cell disease who’s recently had a vaso-occlusive episode? This study investigates better ways for emergency departments (EDs) to manage vaso-occlusive episodes, or pain crises, in people with sickle cell disease. This study is incorporating “Individualized Pain Plans” into patients’ electronic health records to allow for faster and more accurate treatment in the ED. To participate in this study, you must be between the ages of 18 and 45 and have sickle cell disease. You must also have had at least one visit to a participating ED in the past 90 days due to pain from a vaso-occlusive episode and at least one visit at the study site sickle cell disease clinic within the past 12 months. This study takes place in multiple locations in the United States.

Do you or your child have sickle cell disease? This study aims to develop a mathematical equation to estimate the functioning of the kidneys in children and adults with sickle cell disease. To participate in this study, you or your child must be between 5 and 50 years old. This study takes place in Birmingham, Alabama; Chicago, Illinois; and Memphis, Tennessee.

Are you an adult with sickle cell disease who doesn't experience pain episodes? This study uses machine learning to identify sickle cell disease patients who may be at increased risk of chronic kidney disease. To participate in this study, you must be between 18 and 65 years old with sickle cell disease and not experiencing any painful episodes. This study takes place in Chicago, Illinois, Winston-Salem, North Carolina, and Memphis, Tennessee.

Are you a female between 18 and 55 years old who has postural tachycardia syndrome (POTS)? This study is looking at the sympathetic nervous system and its effect on the increased heart rate and dizziness upon standing that people with POTS experience. This study is located in Nashville, Tennessee.

Do you have low blood pressure due to primary autonomic failure or multiple system atrophy? Autonomic failure is caused by problems with a part of the nervous system called the autonomic nervous system. People with these conditions can suffer debilitating low blood pressure upon standing. This study is testing the use of compression garments to improve blood pressure in people with these conditions. To participate in this study, you must be between 40 and 80 years old and have low blood pressure when standing. This study takes place in Nashville, Tennessee.

Are you older than 40 and have a history of peripheral artery disease (PAD)? This study will examine whether the drug rivaroxaban improves symptoms associated with peripheral artery disease (PAD). To participate in this study, you must be at least 40 years old and have a history of PAD. This study takes place in Nashville, Tennessee.

Do you or your child have severe asthma that is not easily controlled by inhaled corticosteroids? This study evaluates the use of five different asthma medicines to treat adults and adolescents with severe asthma. To participate in this study, you or your child must be 12 years old or older. This study takes place in multiple locations across the United States.

The primary purpose of this study is to investigate whether a voice-based platform is better for delivering an electronic health intervention to older adults than a text/typing-based platform. We have an evidence-based electronic health intervention (Elder Tree, ET) that has been shown to improve quality of life, physical and socio-emotional health outcomes for older adults with multiple chronic conditions when delivered via a text/typing-based system. The current project would test whether such patients would benefit even more if ET were delivered via a voice-based system (vs. the text-based system) because they would use it more consistently. ET is an existing intervention providing tools, motivation, and support on a computer platform to help older adults manage their health.

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.