List Results
Refine Search
Results by Topic
Results on Map
Search Details
Found 45 studies with search of: Open Studies | "Orthostatic Intolerance"
Include studies that are not seeking new volunteers.
Hide studies with unknown recruitment status.
  Display Options
Rank Status Study
1 Recruiting Treatment of Orthostatic Intolerance
Conditions: Tachycardia;   Chronic Orthostatic Intolerance
Interventions: Drug: Acetazolamide;   Drug: Atomoxetine;   Other: Baseline (No Drug);   Drug: Clonidine;   Drug: Entacapone;   Drug: Entacapone & Propranolol;   Drug: Atomoxetine & Propranolol;   Drug: Indomethacin;   Drug: Mecamylamine;   Drug: Isosorbide Dinitrate;   Dietary Supplement: Melatonin;   Drug: Midodrine;   Drug: Modafinil;   Drug: Octreotide;   Radiation: Placebo;   Drug: Propranolol;   Drug: Modafinil & Propranolol;   Drug: Sertraline;   Procedure: IV Saline;   Other: Drinking Water;   Device: Breathing Device;   Drug: memantine;   Device: Abdominal binder
2 Recruiting Objective Sleep Disturbances in Orthostatic Intolerance
Conditions: Postural Tachycardia Syndrome;   Chronic Orthostatic Intolerance
Intervention: Procedure: Polysomnography
3 Recruiting Effect of Exercise in OI
Conditions: Orthostatic Intolerance;   Postural Tachycardia Syndrome
Interventions: Drug: Propanolol;   Drug: Placebo
4 Recruiting Sleep Actigraphy in Postural Tachycardia Syndrome (POTS)
Conditions: Postural Tachycardia Syndrome;   Orthostatic Intolerance;   Sleep Disorders
Intervention: Device: Actigraphy Watch (motion sensors) with light sensors - ActiWatch from Minimitter
5 Not yet recruiting Blood Pressure and Brain Blood Flow Regulation After Midodrine Administration in Those With Spinal Cord Injury
Condition: Orthostatic Intolerance
Intervention: Drug: Midodrine
6 Recruiting Pathophysiology of Orthostatic Intolerance
Conditions: Tachycardia;   Postural Orthostatic Tachycardia Syndrome
Interventions: Radiation: DAXOR;   Procedure: QSweat;   Drug: Intrinsic Heart Rate
7 Recruiting Autonomic Nervous System and Chronic Fatigue Syndrome
Conditions: Chronic Fatigue Syndrome;   Orthostatic Intolerance;   Postural Tachycardia Syndrome
Interventions: Other: Autonomic Function Testing;   Other: Saline infusions;   Drug: L-NMMA trimethaphan;   Drug: methyldopa
8 Recruiting Peripheral Dopamine in Postural Tachycardia Syndrome
Conditions: Postural Tachycardia Syndrome;   Orthostatic Intolerance
Interventions: Drug: Carbidopa;   Drug: Placebo
9 Recruiting Sex Hormones and Orthostatic Tolerance
Condition: Orthostatic Intolerance
Intervention: Drug: 17 beta estradiol, progesterone, ganirelix acetate
10 Recruiting St. Jude Medical Percutaneous Mitral Valve Repair Study
Condition: Mitral Valve Prolapse
Intervention: Device: PMVr procedure (SJM Percutaneous Mitral Valve Repair (PMVr)
11 Recruiting Mechanisms of Orthostatic Intolerance in Spinal Cord Injured Individuals and Following Bed Rest
Condition: Spinal Cord Injury
Intervention:
12 Recruiting V-Chordal Adjustable System for Chordal Replacement in Mitral Valve Insufficiency Due to Leaflet Prolapse
Condition: Mitral Leaflet Prolapse
Intervention: Device: V Chordal
13 Recruiting Intravenous (IV) Saline and Exercise in Postural Tachycardia Syndrome (POTS)
Condition: Postural Tachycardia Syndrome
Interventions: Drug: Saline;   Other: Placebo
14 Recruiting Dietary Sodium's Effect on Urinary Sodium and Dopamine Excretion in Patients With Postural Tachycardia Syndrome
Condition: Postural Orthostatic Tachycardia Syndrome
Interventions: Radiation: Total Blood Volume;   Procedure: Exercise Capacity Test - Bicycle;   Procedure: Posture Study
15 Recruiting Dietary Salt in Postural Tachycardia Syndrome
Condition: Postural Orthostatic Tachycardia Syndrome
Interventions: Radiation: Blood Volume;   Radiation: Total Blood Volume;   Procedure: Exercise Capacity Test - Bicycle;   Procedure: Posture Study
16 Recruiting Breathing Device in Postural Orthostatic Tachycardia Syndrome (POTS)
Conditions: Postural Tachycardia Syndrome;   Postural Orthostatic Tachycardia Syndrome
Interventions: Device: Inspiratory Threshold Device (Res-Q-Gard ITD);   Device: Sham Inspiratory Threshold Device
17 Recruiting Local Vasoconstriction in Postural Tachycardia Syndrome
Condition: Postural Tachycardia Syndrome
Interventions: Drug: Losartan;   Drug: Ascorbic Acid (Vitamin C);   Drug: Normal Saline
18 Unknown † The Renin-Aldosterone Axis in Postural Tachycardia Syndrome
Condition: Postural Tachycardia Syndrome
Intervention: Drug: Angiotensin II
19 Recruiting Intravenous Norepinephrine for Orthostatic Hypotension
Condition: Orthostatic Hypertension
Intervention: Drug: Intravenous Norepinephrine Infusion
20 Unknown † Orthostatic Hypotension in Children With Acute Febrile Illness
Conditions: Fever;   Orthostatic Hypotension
Intervention: Procedure: All subjects will have their blood pressure measured in supine position (after 5 minute of rest) and after 3 minute of standing.

Previous Page Studies Shown (1-20) Next Page (21-40)
† Indicates status has not been verified in more than two years
Save this search by bookmarking this page.
When you use your bookmark, the search will be performed again on the most recent collection of studies.
RSS Feeds for studies found by your search that were:
  First received in the last 14 days,  
  Last updated (includes received) in the last 30 days
  Download Options




Contact Help Desk
Lister Hill National Center for Biomedical Communications,  U.S. National Library of Medicine,
U.S. National Institutes of Health,  U.S. Department of Health & Human Services,
USA.gov,  Copyright,  Privacy,  Accessibility,  Freedom of Information Act

U.S. National Institutes of Health U.S. National Library of Medicine U.S. Department of Health & Human Services