Clinical trials: Orthostatic Intolerance
Postural Orthostatic Tachycardia Syndrome
Assessment of Antibodies and Inflammatory Markers in Postural Tachycardia Syndrome
In this pilot study, the investigators will test the hypothesis that patients with postural tachycardia syndrome will have an elevated percentage of functional antibodies to adrenergic receptors compared with control subjects…
- Trial name
- NCT02196376
- Testing
- History, Physical, blood draw
- Where
- United States
- Volunteers
- 212 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University
Vasovagal Syncope, Postural Tachycardia Syndrome
Mechanisms of Vasovagal Syncope
Vasovagal Syncope (simple postural faint) is the most common cause of acute loss of consciousness. Postural tachycardia syndrome(POTS) is the most common chronic form of postural lightheadedness.
- Trial name
- NCT01791816
- Testing
- Phenylephrine, L-Ng-monomethyl Arginine (L-NMMA)
- Where
- United States
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- New York Medical College
Chronic Fatigue Syndrome in Adolescence, Postural Orthostatic Tachycardia Syndrome
POTS-CFS Study: Orthostatic Intolerance in the Context of Pediatric ME/CFS
Pilot-case-control study on exertion and orthostatic intolerance of adolescents with myalgic encephalomyelitis/ chronic fatigue syndrome (ME/CFS) compared to age-matched healthy controls (HC).
- Conditions
- Chronic Fatigue Syndrome in Adolescence, Postural Orthostatic Tachycardia Syndrome, Orthostatic Intolerance
- Trial name
- POTS-CFS (NCT06054958)
- Where
- Germany
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Technical University of Munich
Vitamin D Deficiency, Orthostatic Intolerance
Vitamin D Deficiency and Dysautonomia
In previous work the investigator identified a group of children between the ages of 10-18 years whose diagnostic workup for chronic nausea unexplained by conventional diagnostic tests has unexpectedly revealed underlying…
- Conditions
- Vitamin D Deficiency, Orthostatic Intolerance, Nausea
- Trial name
- NCT03032328
- Testing
- vitamin D supplement
- Where
- United States
- Volunteers
- 31 people, healthy volunteers welcome
- Sponsor
- Wake Forest University Health Sciences
Postural Orthostatic Tachycardia Syndrome (POTS), POTS
Cardiovagal Baroreflex Deficits Impair Neurovascular Coupling and Cognition in POTS
Postural tachycardia syndrome (POTS), is the chronic form of orthostatic intolerance associated with excessive upright tachycardia, and occurs predominantly in young females (>85%).
- Conditions
- Postural Orthostatic Tachycardia Syndrome (POTS), POTS, Orthostatic Intolerance
- Trial name
- NCT03261570
- Testing
- Pyridostigmine, Digoxin
- Where
- United States
- Volunteers
- 51 people, healthy volunteers welcome
- Sponsor
- New York Medical College
Postural Tachycardia Syndrome
Local Vasoconstriction in Postural Tachycardia Syndrome
The investigators study will determine how often blood flow regulation abnormalities and abnormalities of sympathetic regulation produced by nitric oxide, angiotensin-II, and oxidative stress occur in POTS and the mechanism(s) of…
- Trial name
- NCT01210430
- Testing
- Losartan, Ascorbic Acid (Vitamin C), Normal Saline
- Where
- United States
- Volunteers
- 74 people, healthy volunteers welcome
- Sponsor
- New York Medical College
Chronic Fatigue Syndrome, Myalgic Encephalomyelitis
Reducing Orthostatic Intolerance With Oral Rehydration in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Patients
We and others have shown that many younger patients with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) have orthostatic intolerance (OI), i.e., they can't tolerate prolonged standing.
- Conditions
- Chronic Fatigue Syndrome, Myalgic Encephalomyelitis, Systemic Exertion Intolerance Disease (SEID), Postural Tachycardia Syndrome (POTS)
- Trial name
- NCT02854683
- Testing
- Normal Saline, Oral Rehydration Solution
- Where
- United States
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- New York Medical College