44 studies found for:    Postural Tachycardia Syndrome
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Rank Status Study
21 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:
22 Recruiting EEG Characteristics in Youth POTS and/or Syncope
Conditions: Syncope;   Postural Tachycardia Syndrome;   Orthostatic Intolerance
Intervention: Device: Abdominal and lower extremity compression
23 Completed Hypnosis in Autonomic Function
Conditions: Vasovagal Syncope;   Postural Tachycardia Syndrome;   Hypnosis
Intervention:
24 Recruiting Mechanisms of Vasovagal Syncope
Conditions: Vasovagal Syncope;   Postural Tachycardia Syndrome
Interventions: Drug: Phenylephrine;   Drug: L-Ng-monomethyl Arginine (L-NMMA)
25 Active, not recruiting Tilt Table With Suspected Postural Orthostatic Tachycardia Syndrome (POTS) Subjects
Conditions: Postural Orthostatic Tachycardia Syndrome;   Syncope, Vasovagal;   Neurocardiogenic Syncope
Intervention:
26 Completed
Has Results
Renal Salt Handling in Postural Tachycardia Syndrome Following Dietary Dopa Administration
Condition: Healthy Volunteers
Interventions: Dietary Supplement: Fava beans;   Other: Fixed Sodium Diet
27 Active, not recruiting Objective Sleep Disturbances in Orthostatic Intolerance
Conditions: Postural Tachycardia Syndrome;   Chronic Orthostatic Intolerance
Intervention: Procedure: Polysomnography
28 Active, not recruiting Effect of Exercise in OI
Conditions: Orthostatic Intolerance;   Postural Tachycardia Syndrome
Interventions: Drug: Propanolol;   Drug: Placebo
29 Terminated Dopamine in Orthostatic Tolerance
Condition: Postural Tachycardia Syndrome
Intervention: Dietary Supplement: dietary sodium
30 Active, not recruiting Acute Salt Handling in Orthostatic Intolerance
Conditions: Postural Tachycardia Syndrome;   Orthostatic Tachycardia;   Orthostatic Intolerance
Intervention: Other: normal saline (0.9%)
31 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
32 Recruiting Abdominal and Lower Extremity Compression During Tilt Table Testing in Adolescent POTS Patients
Conditions: Postural Orthostatic Tachycardia Syndrome (POTS);   Syncope
Intervention: Device: Zoex compression garment
33 Recruiting Clinical Autonomic Disorders: A Training Protocol
Conditions: Chronic Fatigue Syndrome;   Pseudopheochromocytoma;   Healthy Volunteers;   Neurocardiogenic Syncope;   Postural Tachycardia Syndrome
Intervention:
34 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
35 Recruiting Pathophysiology of Orthostatic Intolerance
Conditions: Tachycardia;   Postural Orthostatic Tachycardia Syndrome
Interventions: Radiation: DAXOR;   Procedure: QSweat;   Drug: Intrinsic Heart Rate
36 Recruiting High Sodium Diet and External Abdominal Compression in POTS
Condition: Postural Orthostatic Tachycardia Syndrome
Intervention: Device: External automated abdominal binder
37 Completed PET Scan in Patients With Neurocardiologic Disorders
Condition: Autonomic Nervous System Diseases
Intervention:
38 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
39 Unknown  Biospecimen Repository for Cardiac Arrhythmias at the Cleveland Clinic
Condition: Arrhythmias, Cardiac
Intervention:
40 Unknown  Palpitations and Tachycardia in Fibromyalgia Syndrome
Condition: Fibromyalgia Syndrome
Intervention: Other: Evaluation of autonomic parameters

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Indicates status has not been verified in more than two years