55 studies found for:    Open Studies | "Orthostatic Intolerance"
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Rank Status Study
21 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
22 Not yet recruiting Insulin Therapy and Falls Due to Orthostatic Hypotension
Conditions: Orthostatic Hypotension;   Diabetes;   Syncope
Interventions: Other: Insulin;   Other: No Insulin
23 Unknown  Is Orthostatic Hypotension Associated With Nondipping Hypertension
Conditions: Orthostatic Hypotension;   Nondipping Hypertension
Intervention:
24 Recruiting Clinical Autonomic Disorders: A Training Protocol
Conditions: Chronic Fatigue Syndrome;   Pseudopheochromocytoma;   Healthy Volunteers;   Neurocardiogenic Syncope;   Postural Tachycardia Syndrome
Intervention:
25 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
26 Recruiting The Phenotype and Natural History of Primary Autonomic Disorders
Condition: Neurogenic Orthostatic Hypotension
Intervention:
27 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:
28 Recruiting Assessment of Vascular Endothelial Function in Postural Tachycardia Syndrome
Condition: Postural Tachycardia Syndrome
Intervention: Device: Blood Pressure and Blood Flow
29 Not yet recruiting Syncope Prediction Study
Condition: Vasovagal Syncope
Intervention:
30 Recruiting Droxidopa / Pyridostigmine in Orthostatic Hypotension
Condition: Orthostatic Hypotension
Interventions: Drug: Droxidopa;   Drug: Pyridostigmine Bromide
31 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.
32 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
33 Recruiting Adrenocorticotropic Hormone Stimulation in Postural Orthostatic Tachycardia Syndrome (POTS)
Condition: Postural Tachycardia Syndrome
Intervention: Drug: Cosyntropin administration
34 Recruiting Breathing Device for Orthostatic Hypotension (OH)
Condition: Orthostatic Hypotension
Interventions: Device: Inspiratory Threshold Device (Res-Q-Gard ITD);   Device: Sham Inspiratory Threshold Device
35 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
36 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
37 Recruiting Cardioneuroablation for Neurocardiogenic Syncope
Conditions: Neurocardiogenic Syncope;   Vasovagal Syncope
Interventions: Procedure: Cardioneuroablation;   Device: Biosense Webster Navistar ThermoCool Diagnostic/Ablation Deflectable Tip Catheter
38 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
39 Recruiting A Study of Pyridostigmine in Postural Tachycardia Syndrome
Condition: Postural Tachycardia Syndrome
Interventions: Drug: pyridostigmine;   Drug: Placebo
40 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

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Indicates status has not been verified in more than two years