58 studies found for:    Open Studies | "Mitral Valve Prolapse"
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21 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
22 Recruiting Determinants of the Progression and Outcome of Mitral Regurgitation
Condition: Mitral Valve Insufficiency
Interventions: Other: Blood biomarkers;   Genetic: DNA collection;   Other: Echocardiography;   Other: Cardiopulmonary exercise testing;   Other: Magnetic resonance imaging (MRI);   Other: Exercise stress doppler echocardiography;   Other: Holter ECG
23 Recruiting POTS Adrenergic Ab (CIHR Aims #1&2)
Condition: Postural Tachycardia Syndrome
Interventions: Drug: Phenylephrine;   Drug: Isoproterenol
24 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
25 Not yet recruiting Dawn Simulation and Postural Hypotension
Condition: Orthostatic Hypotension
Intervention: Device: Light
26 Recruiting Blood Pressure Lowering Effects of Angiotensin-(1-7) in Primary Autonomic Failure
Conditions: Autonomic Nervous System Disorders;   Pure Autonomic Failure;   Shy-Drager Syndrome;   Orthostatic Hypotension, Dysautonomic
Interventions: Drug: Angiotensin-(1-7);   Drug: Saline
27 Not yet recruiting Sustained Effect of Droxidopa in Symptomatic Neurogenic Orthostatic Hypotension
Condition: Symptomatic Neurogenic Orthostatic Hypotension
Interventions: Drug: Droxidopa capsules;   Drug: Placebo capsules
28 Recruiting The Tilt Test-Induced REsponse in Closed-loop Stimulation (TIRECS) Study
Condition: Syncope, Vasovagal, Neurally-Mediated
Interventions: Device: Closed-loop Stimulation on first;   Device: Closed-loop Stimulation off first
29 Recruiting Prevention of Syncope Trial 6 - Atomoxetine in Vasovagal Syncope
Condition: Vasovagal Syncope
Interventions: Drug: Atomoxetine;   Drug: Placebo
30 Recruiting Hemodynamic Mechanisms of Abdominal Compression in the Treatment of Orthostatic Hypotension in Autonomic Failure
Conditions: Orthostatic Hypotension;   Pure Autonomic Failure;   Multiple System Atrophy;   Autonomic Failure
Interventions: Other: Abdominal compression with inflatable cuff;   Other: Sham abdominal compression with inflatable cuff
31 Recruiting Post-Exercise Hypotension in Elderly Hypertensive Men
Condition: Hypertension
Interventions: Other: Aerobic exercise;   Other: Combined exercises;   Other: Control
32 Recruiting Heart Rate Variability and Orthostatic Hypotension in Stroke Patients Evaluated by Intelligent Biosensor System
Condition: Cerebrovascular Accident
Intervention:
33 Recruiting Qualitative Sweat Distribution During Tilt Table Procedure
Conditions: Postural Tachycardia Syndrome;   Syncope;   Anxiety
Intervention: Other: Alizarin Red
34 Recruiting Treatment and Prognosis of Neurogenic Orthostatic Hypotension : A Prospective Randomized Study
Condition: Orthostatic; Hypotension, Neurogenic
Interventions: Drug: Midodrine;   Drug: Pyridostigmine Bromide;   Drug: Midodrine + pyridostigmine bromide
35 Recruiting Transdermal Vagal Stimulation for POTS
Condition: Postural Orthostatic Tachycardia Syndrome
Interventions: Other: Stimulation;   Other: Placebo
36 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
37 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
38 Recruiting Clinical Autonomic Disorders: A Training Protocol
Conditions: Chronic Fatigue Syndrome;   Pseudopheochromocytoma;   Healthy Volunteers;   Neurocardiogenic Syncope;   Postural Tachycardia Syndrome
Intervention:
39 Recruiting Syncope Prediction Study
Condition: Vasovagal Syncope
Intervention:
40 Recruiting Assessment of Metoprolol in the Prevention of Vasovagal Syncope in Aging Subjects
Condition: Vasovagal Syncope
Intervention: Drug: Metoprolol

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Indicates status has not been verified in more than two years