| Hypercapnia and Orthostatic Tolerance in Postural Orthostatic Tachycardia Syndrome (NCT04271878) | University of Calgary | 2022-02-02 |
| POTS-CFS Study: Orthostatic Intolerance in the Context of Pediatric ME/CFS (NCT06054958) | Technical University of Munich | 2021-12-06 |
| Orthostatic Intolerance and Hypotension After Administration of Morphine in Patients Prior to Hip or Knee Arthroplasty (NCT04902222) | Copenhagen University Hospital, Hvidovre | 2021-04-01 |
| Pathophysiologic Hemodynamics After Primary Unilateral Total Hip Arthroplasty in Patients Receiving ACEIs and ARBs (NCT04842058) | Hvidovre University Hospital | 2020-12-01 |
| Postoperative Incidence of Orthostatic Intolerance and Hypotension in Primary Unicompartmental Knee Arthroplasty (UKA) (NCT04195360) | Copenhagen University Hospital, Hvidovre | 2019-12-02 |
| Long-term Effects of Transcutaneous Vagal Nerve Stimulation on Postural Orthostatic Tachycardia Syndrome (POTS) (NCT04632134) | Istituto Clinico Humanitas | 2019-11-10 |
| Lower Body Muscle Pre-activation in Initial Orthostatic Hypotension (NCT03970551) | University of Calgary | 2019-07-01 |
| Pathophysiologic Hemodynamics After Primary Unilateral Total Hip Arthroplasty (THA) (NCT03759574) | Hvidovre University Hospital | 2019-03-18 |
| Postoperative Orthostatic Intolerance and Hypotension in Unilateral TKA (NCT03743116) | Hvidovre University Hospital | 2018-11-13 |
| Orthostatic Intolerance After Bariatric Surgery (NCT03808740) | Vanderbilt University Medical Center | 2018-07-01 |
| Vitamin D Deficiency and Dysautonomia (NCT03032328) | Wake Forest University Health Sciences | 2016-06-01 |
| Autoimmune Basis for Postural Tachycardia Syndrome (NCT02725060) | Vanderbilt University Medical Center | 2016-02-01 |
| EEG Characteristics in Youth POTS and/or Syncope (NCT02167412) | Nationwide Children's Hospital | 2014-06-01 |
| Treatment of Orthostatic Intolerance in Patients With Parkinson's Disease Using Midodrine (NCT02365012) | Corporal Michael J. Crescenz VA Medical Center | 2014-04-01 |
| Blood Pressure and Brain Blood Flow Regulation After Midodrine Administration in Those With Spinal Cord Injury (NCT01498809) | University of British Columbia | 2012-03-01 |
| Hemodynamic Response of Neuropathic And Non-Neuropathic POTS Patients To Adrenoreceptor Agonist And Antagonist (NCT03070730) | Beth Israel Deaconess Medical Center | 2011-08-15 |
| Sleep Actigraphy in Postural Tachycardia Syndrome (POTS) (NCT00692471) | Satish R. Raj | 2008-06-01 |
| Autonomic Nervous System and Chronic Fatigue Syndrome (NCT00580619) | Vanderbilt University | 2007-04-01 |
| Acute Salt Handling in Orthostatic Intolerance (NCT00581633) | Vanderbilt University | 2007-02-01 |
| Sex Hormones and Orthostatic Tolerance (NCT01153581) | Yale University | 2006-02-01 |
| Treatment of Orthostatic Hypotension (NCT00581477) | Vanderbilt University | 2004-01-01 |
| The Pathophysiology of Orthostatic Hypotension (NCT00748059) | Vanderbilt University Medical Center | 1996-12-01 |