Clinical Trials Logo

Clinical Trial Summary

This study is designed to determine the causes of "orthostatic intolerance" which occurs more commonly in women than in men. Orthostatic tolerance is the ability to remain standing up right for long periods of time, or to avoid dizziness when moving to standing from a seated or lying position.


Clinical Trial Description

In this study we are interested in determining the impact of female reproductive hormones (estrogen and progesterone) on orthostatic tolerance (described above) so we administer these hormones to participants. We also test participants' orthostatic tolerance in our laboratory and use this information to place subjects into groups. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT01153581
Study type Interventional
Source Yale University
Contact
Status Completed
Phase Phase 2
Start date February 2006
Completion date May 2013

See also
  Status Clinical Trial Phase
Completed NCT05529147 - The Effects of Medication Induced Blood Pressure Reduction on Cerebral Hemodynamics in Hypertensive Frail Elderly
Recruiting NCT05555771 - Paediatric Syncope in the Emergency Department N/A
Completed NCT00770484 - Effect of Exercise in OI N/A
Completed NCT03743116 - Postoperative Orthostatic Intolerance and Hypotension in Unilateral TKA
Recruiting NCT04632134 - Long-term Effects of Transcutaneous Vagal Nerve Stimulation on Postural Orthostatic Tachycardia Syndrome (POTS) N/A
Completed NCT00685919 - Peripheral Dopamine in Postural Tachycardia Syndrome Phase 2/Phase 3
Not yet recruiting NCT05977335 - Continuous and Non-invasive Measurements by Task Force® CORE/CARDIO in Autonomic Function Testing (AFT)
Recruiting NCT06289413 - Autonomic Dysfunction in Patients Following Bariatric Surgery: The ADiPOSE Study
Completed NCT01498809 - Blood Pressure and Brain Blood Flow Regulation After Midodrine Administration in Those With Spinal Cord Injury
Recruiting NCT03759574 - Pathophysiologic Hemodynamics After Primary Unilateral Total Hip Arthroplasty (THA)
Completed NCT03032328 - Vitamin D Deficiency and Dysautonomia N/A
Completed NCT02167412 - EEG Characteristics in Youth POTS and/or Syncope
Active, not recruiting NCT00692471 - Sleep Actigraphy in Postural Tachycardia Syndrome (POTS)
Active, not recruiting NCT05990907 - Influence of RIC on the Orthostatic Competence of the Microcirculation N/A
Active, not recruiting NCT03970551 - Lower Body Muscle Pre-activation in Initial Orthostatic Hypotension N/A
Completed NCT03808740 - Orthostatic Intolerance After Bariatric Surgery Phase 1
Completed NCT03261570 - Cardiovagal Baroreflex Deficits Impair Neurovascular Coupling and Cognition in POTS Early Phase 1
Terminated NCT00581477 - Treatment of Orthostatic Hypotension Phase 2/Phase 3
Enrolling by invitation NCT02725060 - Autoimmune Basis for Postural Tachycardia Syndrome N/A
Active, not recruiting NCT00581633 - Acute Salt Handling in Orthostatic Intolerance N/A