NCT01308099

Assessment of Vascular Endothelial Function in Postural Tachycardia Syndrome

Assessment of Vascular Endothelial Function in Postural Tachycardia Syndrome (POTS)

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 26 (actual)
• Sponsor: Vanderbilt University Medical Center · Academic / Other
• Sex: All
• Age: 18 Years – 60 Years
• Healthy volunteers: Accepted

Summary

The purpose of this study is to see if people with Postural Tachycardia Syndrome (POTS) have different levels of certain chemicals in their blood than people who don't have POTS. This study will test whether the blood vessels of people with POTS will react differently to certain tests than people without POTS. The hypothesis of the study is: Patients with POTS will have vascular endothelial dysfunction compared with control subjects.

Conditions

• Postural Tachycardia Syndrome

Interventions

Type	Name	Description
DEVICE	Blood Pressure and Blood Flow	A blood pressure cuff will be placed on one arm and small probes on one finger on both hands. The probes also measure blood pressure. After 10 minutes, the arm blood pressure cuff will be inflated. The cuff will stay inflated for 5 minutes, then the air will be let out. A cuff will be place above the left calf and the left knee. The subject will lie quietly for 9 minutes, then blood pressure and calf blood flow will be measured for one minute. the lower leg cuff will be inflated after 1 minute, then the cuff will be deflated. The blood pressure and forearm blood flow will be recorded. Next, the cuff on the upper leg will be inflated for 5 minutes then, it will be released and the measurements of blood pressure and calf blood flow will be repeated. The study lasts about 2 hours.

Timeline

• Start date: 2011-02-01
• Primary completion: 2017-01-01
• Completion: 2017-01-01
• First posted: 2011-03-03
• Last updated: 2017-01-18

Locations

2 sites across 1 country: United States