55 studies found for:    Open Studies | "Orthostatic Intolerance"
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Rank Status Study
21 Recruiting Transcranial Electrical Stimulation for Management of Orthostatic Instability in Acute Cervical Spinal Cord Injury
Conditions: Orthostatic Hypotension;   Postural Hypotension
Intervention: Device: transcranial electrical stimulation
22 Not yet recruiting Evaluation of the Effect of Hydration About Orthostatic Hypotension in the Elderly. Difference With Venous Compression
Condition: Orthostatic Hypotension
Interventions: Other: Hydration;   Other: Venous contention
23 Recruiting Droxidopa / Pyridostigmine in Orthostatic Hypotension
Condition: Orthostatic Hypotension
Interventions: Drug: Droxidopa;   Drug: Pyridostigmine Bromide
24 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.
25 Unknown  Cardiovascular Effects of Selective I(f)-Channel Blockade
Condition: Postural Orthostatic Tachycardia Syndrome
Interventions: Drug: beta-blocker (Metoprolol);   Drug: I(f)-blocker (ivabradine);   Drug: Placebo
26 Recruiting A Study of Pyridostigmine in Postural Tachycardia Syndrome
Condition: Postural Tachycardia Syndrome
Interventions: Drug: pyridostigmine;   Drug: Placebo
27 Recruiting Iron Sucrose in Adolescents With Iron Deficiency and Postural Orthostatic Tachycardia Syndrome (POTS)
Condition: Postural Orthostatic Tachycardia Syndrome
Interventions: Drug: Iron infusion;   Drug: Normal saline infusion
28 Recruiting Clinical Autonomic Disorders: A Training Protocol
Conditions: Chronic Fatigue Syndrome;   Pseudopheochromocytoma;   Healthy Volunteers;   Neurocardiogenic Syncope;   Postural Tachycardia Syndrome
Intervention:
29 Recruiting Influence of Yoga in Patients With Neurocardiogenic Syncope
Condition: Syncope, Vasovagal
Intervention: Other: Yoga
30 Recruiting Effect of Medical Treatment and Prognosis of Postural Orthostatic Tachycardia Syndrome (POTS)
Condition: Postural Orthostatic Tachycardia Syndrome
Interventions: Drug: Propranolol;   Drug: Bisoprolol;   Drug: Propranolol+pyridostigmine;   Drug: Bisoprolol+pyridostgmine
31 Recruiting Cognitive Dysfunction in Postural Tachycardia Syndrome
Condition: Postural Tachycardia Syndrome
Interventions: Behavioral: Seated Measurements;   Behavioral: Standing Measurements;   Behavioral: Self-Administered Surveys
32 Not yet recruiting Syncope Prediction Study
Condition: Vasovagal Syncope
Intervention:
33 Recruiting Essential Hypotension and Adaptability Registry
Conditions: Blood Pressure;   Depression;   Panic Attack;   Fibromyalgia;   POTS;   Inappropriate Sinus Tachycardia;   Coronary Heart Disease;   Acute Coronary Syndrome (ACS);   Acute Myocardial Infarction (AMI);   Cerebrovascular Disease (CVD);   Transient Ischemic Attack (TIA);   Atrial Fibrillation;   Diabetes Mellitus;   Cancer;   Systolic Heart Failure;   Diastolic Heart Failure;   Chronic Fatigue Syndrome;   Syncope;   Vasovagal Syncope
Intervention:
34 Recruiting A Clinical Study of Patients With Symptomatic NOH to Assess Sustained Effects of Droxidopa Therapy
Conditions: Symptomatic Neurogenic Orthostatic Hypotension;   Parkinson's Disease;   Multiple Systems Atrophy;   Pure Autonomic Failure;   Dopamine Beta Hydroxylase Deficiency
Interventions: Drug: Droxidopa;   Drug: Placebo
35 Recruiting Assessment of Vascular Endothelial Function in Postural Tachycardia Syndrome
Condition: Postural Tachycardia Syndrome
Intervention: Device: Blood Pressure and Blood Flow
36 Recruiting Assessment of Midodrine in the Prevention of Vasovagal Syncope: The Prevention of Syncope Trial IV
Condition: Vasovagal Syncope
Interventions: Drug: midodrine hydrochloride;   Drug: matching placebo
37 Recruiting The Phenotype and Natural History of Primary Autonomic Disorders
Condition: Neurogenic Orthostatic Hypotension
Intervention:
38 Recruiting Effect of Dietary Sodium Intake on Vascular Endothelium
Condition: Postural Tachycardia Syndrome (POTS)
Interventions: Procedure: Pulsitile Arterial Tonometry (PAT) Protocol;   Device: Calf Blood Flow in Reactive Hyperemia (CBF-RH);   Device: Evaluation of Forearm-Mediated Dilation
39 Unknown  Head Circumference Growth in Children With Ehlers-Danlos Syndrome Who Develop Dysautonomia Later in Life
Conditions: Ehlers Danlos Syndrome;   External Hydrocephalus;   Dysautonomia;   Postural Orthostatic Tachycardia Syndrome;   Venous Insufficiency
Intervention:
40 Not yet recruiting Assessment of Metoprolol in the Prevention of Vasovagal Syncope in Aging Subjects
Condition: Vasovagal Syncope
Interventions: Drug: Metoprolol;   Drug: Matching Placebo

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Indicates status has not been verified in more than two years