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48 studies found for:    Open Studies | "Orthostatic Intolerance"

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Open Studies | "Orthostatic Intolerance"
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Rank Status Study
1 Recruiting Treatment of Orthostatic Intolerance
Conditions: Tachycardia;   Chronic Orthostatic Intolerance
Interventions: Drug: Acetazolamide;   Drug: Atomoxetine;   Other: 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 Effect of Exercise in OI
Conditions: Orthostatic Intolerance;   Postural Tachycardia Syndrome
Interventions: Drug: Propanolol;   Drug: Placebo
3 Recruiting Genetic Basis of Mitral Valve Prolapse
Condition: Mitral Valve Prolapse
Intervention:
4 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
5 Recruiting Pathophysiology of Orthostatic Intolerance
Conditions: Tachycardia;   Postural Orthostatic Tachycardia Syndrome
Interventions: Radiation: DAXOR;   Procedure: QSweat;   Drug: Intrinsic Heart Rate
6 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
7 Recruiting Peripheral Dopamine in Postural Tachycardia Syndrome
Conditions: Postural Tachycardia Syndrome;   Orthostatic Intolerance
Interventions: Drug: Carbidopa;   Drug: Placebo
8 Recruiting Treatment of Orthostatic Hypotension
Conditions: Autonomic Nervous System Diseases;   Orthostatic Hypotension;   Dopamine Beta-Hydroxylase Deficiency;   Orthostatic Intolerance
Interventions: Drug: droxidopa;   Drug: placebo;   Drug: alpha-methyldopa;   Drug: carbidopa;   Drug: metyrosine;   Drug: levodopa;   Drug: atomoxetine;   Drug: metoclopramide
9 Recruiting Sex Hormones and Orthostatic Tolerance
Condition: Orthostatic Intolerance
Intervention: Drug: 17 beta estradiol, progesterone, ganirelix acetate
10 Recruiting Efficacy of Midodrine for the Prevention of Orthostatic Hypotension During Early Mobilization After Fast-track Hip Arthroplasty
Conditions: Postoperative Orthostatic Hypotension;   Postoperative Orthostatic Intolerance
Interventions: Drug: Midodrine;   Drug: Placebo
11 Recruiting St. Jude Medical Percutaneous Mitral Valve Repair Study
Condition: Mitral Valve Prolapse
Intervention: Device: PMVr procedure (SJM Percutaneous Mitral Valve Repair (PMVr)
12 Recruiting Study on Safety and Performance of Medtentia Annuloplasty Ring in Surgical Repair of Mitral Regurgitation
Conditions: Mitral Regurgitation;   Mitral Insufficiency;   Mitral Valve Prolapse
Intervention: Device: Mitral valve repair using Medentia Annuloplasty Ring
13 Recruiting Intravenous (IV) Saline and Exercise in Postural Tachycardia Syndrome (POTS)
Condition: Postural Tachycardia Syndrome
Interventions: Drug: Saline;   Other: Placebo
14 Recruiting High Sodium Diet and External Abdominal Compression in POTS
Condition: Postural Orthostatic Tachycardia Syndrome
Intervention: Device: External automated abdominal binder
15 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
16 Recruiting Mechanisms of Vasovagal Syncope
Conditions: Vasovagal Syncope;   Postural Tachycardia Syndrome
Interventions: Drug: Phenylephrine;   Drug: L-Ng-monomethyl Arginine (L-NMMA)
17 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
18 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
19 Recruiting Local Vasoconstriction in Postural Tachycardia Syndrome
Condition: Postural Tachycardia Syndrome
Interventions: Drug: Losartan;   Drug: Ascorbic Acid (Vitamin C);   Drug: Normal Saline
20 Unknown † The Renin-Aldosterone Axis in Postural Tachycardia Syndrome
Condition: Postural Tachycardia Syndrome
Intervention: Drug: Angiotensin II
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† Indicates status has not been verified in more than two years