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49 studies found for:    Open Studies | "Orthostatic Intolerance"
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Rank Status Study
1 Recruiting Treatment of Orthostatic Intolerance in Patients With Parkinson's Disease Using Midodrine
Conditions: Orthostatic Intolerance;   Parkinson's Disease
Intervention: Drug: Midodrine
2 Recruiting Autoimmune Basis for Postural Tachycardia Syndrome
Conditions: Postural Orthostatic Tachycardia Syndrome;   Postural Tachycardia Syndrome;   Tachycardia;   Arrhythmias, Cardiac;   Autonomic Nervous System Diseases;   Orthostatic Intolerance;   Cardiovascular Diseases;   Primary Dysautonomias
Interventions: Drug: phenylephrine;   Drug: isoproterenol;   Radiation: 25 micro-Ci of radiation;   Procedure: Posture study with blood samples;   Procedure: 24-hour heart rhythm and blood pressure monitoring;   Procedure: Quantitative Axonal Sudomotor Reflex Testing;   Procedure: Autonomic function tests
3 Recruiting Pathophysiology of Orthostatic Intolerance
Conditions: Tachycardia;   Postural Orthostatic Tachycardia Syndrome
Interventions: Radiation: DAXOR;   Procedure: QSweat;   Drug: Intrinsic Heart Rate
4 Recruiting Reducing Orthostatic Intolerance With Oral Rehydration in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Patients
Conditions: Chronic Fatigue Syndrome;   Myalgic Encephalomyelitis;   Systemic Exertion Intolerance Disease (SEID);   Postural Tachycardia Syndrome (POTS);   Neurally Mediated Syncope (NMS)
Interventions: Drug: Normal Saline;   Dietary Supplement: Oral Rehydration Solution
5 Recruiting Effect of Methylprednisolone on Orthostatic Intolerance and Heart Rate Variability in Hip-arthroplasty Patients
Condition: Osteoarthrosis
Interventions: Drug: Methylprednisolone;   Drug: Isotonic Sodium Chloride
6 Recruiting EEG Characteristics in Youth POTS and/or Syncope
Conditions: Syncope;   Postural Tachycardia Syndrome;   Orthostatic Intolerance
Intervention: Device: Abdominal and lower extremity compression
7 Recruiting High Sodium Diet and External Abdominal Compression in POTS
Condition: Postural Orthostatic Tachycardia Syndrome
Intervention: Device: External automated abdominal binder
8 Recruiting Study on Baroreceptor Function in Relation to Orthostatic Blood Pressure Regulation After Hip Surgery
Conditions: Hypotension, Orthostatic;   Total Hip Replacement
9 Recruiting Northera Improves Postural Tachycardia Syndrome (POTS) and Postural Vasovagal Syncope (VVS)
Conditions: Postural Tachycardia Syndrome (POTS);   Vasovagal Syncope (VVS);   Fainting
Interventions: Drug: Northera (Droxidopa);   Drug: Placebo
10 Recruiting Modafinil and Cognitive Function in POTS
Condition: Postural Tachycardia Syndrome
Interventions: Drug: Placebo;   Drug: Modafinil;   Drug: Propranolol
11 Recruiting Mechanisms of Vasovagal Syncope
Conditions: Vasovagal Syncope;   Postural Tachycardia Syndrome
Interventions: Drug: Phenylephrine;   Drug: L-Ng-monomethyl Arginine (L-NMMA)
12 Unknown  The Renin-Aldosterone Axis in Postural Tachycardia Syndrome
Condition: Postural Tachycardia Syndrome
Intervention: Drug: Angiotensin II
13 Not yet recruiting Treatment of Post-SCI Hypotension
Conditions: Spinal Cord Injury;   Autonomic Dysreflexia;   Orthostatic Hypotension;   Baroreceptor Integrity;   Sympathetic Integrity;   Vagal Integrity;   Hypotension;   Cerebral Blood Flow;   Blood Pressure;   Venous Occlusion Plethysmography
Intervention: Drug: Midodrine Hydrochloride
14 Recruiting Effects of Midodrine and Droxidopa on Splanchnic Capacitance in Autonomic Failure
Conditions: Autonomic Failure;   Pure Autonomic Failure;   Multiple System Atrophy;   Parkinson Disease;   Orthostatic Hypotension
Interventions: Drug: Droxidopa;   Drug: Midodrine;   Drug: Placebo
15 Recruiting A Proof of Principal Study of Atomoxetine for the Prevention of Vasovagal Syncope
Condition: Syncope, Vasovagal
Interventions: Drug: Atomoxetine;   Drug: Matching Placebo
16 Recruiting Norepinephrine Transporter Blockade, Autonomic Failure (NETAF)
Condition: Neurogenic Orthostatic Hypotension
Interventions: Drug: Atomoxetine;   Drug: Placebo
17 Recruiting Reduction in Splanchnic Capacitance Contributes to Sympathetically Dependent Hypertension in Autonomic
Conditions: Multiple System Atrophy;   Orthostatic Hypotension;   Supine Hypertension
Interventions: Drug: Trimethaphan;   Drug: Placebo
18 Recruiting TD-9855 Phase 2 in Neurogenic Orthostatic Hypotension (nOH)
Condition: Neurogenic Orthostatic Hypotension
Interventions: Drug: TD-9855;   Drug: Placebo
19 Recruiting POTS Adrenergic Ab (CIHR Aims #1&2)
Condition: Postural Tachycardia Syndrome
Interventions: Drug: Phenylephrine;   Drug: Isoproterenol
20 Recruiting Observation of ImageReady™ MR Conditional Pacing System in China
Conditions: Arhythmia;   Atrioventricular Heart-block;   Chronic Bundle Branch or Branch Block;   Carotid Sinus Hypersensitivity Reaction Syndrome;   Vasovagal Syncope
Intervention: Device: ImageReady™ MR Conditional Pacing System

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