108 studies found for:    Open Studies | "Autonomic Nervous System Diseases"
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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 Recruiting Aldosterone & Sodium Regulation in Postural Tachycardia Syndrome - Screening
Condition: Postural Tachycardia Syndrome
Interventions: Other: Autonomic Function Testing;   Other: Posture Study;   Procedure: Measurement of Total Blood Volume;   Other: Exercise Capacity Test
23 Recruiting Treatment of Supine Hypertension in Autonomic Failure
Condition: Hypertension
Interventions: Drug: Clonidine;   Drug: Nitroglycerin transdermal;   Drug: Dipyridamole/ Aspirin (Aggrenox);   Drug: Desmopressin (DDAVP);   Drug: Sildenafil;   Drug: Nifedipine;   Drug: Hydralazine;   Drug: Hydrochlorothiazide;   Drug: Placebo;   Drug: Bosentan;   Drug: Diltiazem;   Drug: Eplerenone;   Drug: guanfacine;   Dietary Supplement: L-arginine;   Drug: captopril;   Drug: carbidopa;   Drug: losartan;   Drug: metoprolol tartrate;   Drug: nebivolol hydrochloride;   Drug: prazosin hydrochloride;   Drug: tamsulosin hydrochloride;   Other: Head-up tilt.;   Drug: aliskiren;   Other: Local heat stress
24 Recruiting Dietary Salt in Postural Tachycardia Syndrome
Condition: Postural Orthostatic Tachycardia Syndrome
Interventions: Radiation: Blood Volume;   Radiation: Total Blood Volume;   Procedure: Exercise Capacity Test - Bicycle;   Procedure: Posture Study
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 The Role of Endothelin in the Supine Hypertension of Autonomic Failure
Conditions: Hypertension;   Pure Autonomic Failure;   Multiple System Atrophy
Interventions: Drug: BQ123;   Drug: Bq123;   Drug: Saline
27 Recruiting Peripheral Dopamine in Postural Tachycardia Syndrome
Conditions: Postural Tachycardia Syndrome;   Orthostatic Intolerance
Interventions: Drug: Carbidopa;   Drug: Placebo
28 Recruiting Magnetic Resonance Spectroscopy in Autonomic Failure
Conditions: Pure Autonomic Failure;   Multiple System Atrophy
Intervention: Procedure: Magnetic Resonance Spectroscopy Imaging
29 Not yet recruiting Assessment of Metoprolol in the Prevention of Vasovagal Syncope in Aging Subjects
Condition: Vasovagal Syncope
Interventions: Drug: Metoprolol;   Drug: Matching Placebo
30 Not yet recruiting Syncope Prediction Study
Condition: Vasovagal Syncope
Intervention:
31 Recruiting Cognitive Dysfunction in Postural Tachycardia Syndrome
Condition: Postural Tachycardia Syndrome
Interventions: Behavioral: Seated Measurements;   Behavioral: Standing Measurements;   Behavioral: Self-Administered Surveys
32 Recruiting 2-(1-{6-[(2-[F-18]Fluoroethyl) (Methyl)Amino]-2-naphthyl} Ethylidene) Malononitrile-PET for in Vivo Diagnose of Tauopathy in Unclassified Parkinsonism
Conditions: Progressive Supranuclear Palsy;   Multi-System Atrophy;   Parkinsonism
Intervention: Drug: [F18]-FDDNP
33 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
34 Unknown  Hypoglycemia Associated Autonomic Failure in Type 1 DM, Q4
Condition: Type 1 Diabetes
Intervention: Drug: epinephrine
35 Recruiting Mechanisms of Vasovagal Syncope
Conditions: Vasovagal Syncope;   Postural Tachycardia Syndrome
Interventions: Drug: Phenylephrine;   Drug: L-Ng-monomethyl Arginine (L-NMMA)
36 Recruiting Adrenocorticotropic Hormone Stimulation in Postural Orthostatic Tachycardia Syndrome (POTS)
Condition: Postural Tachycardia Syndrome
Intervention: Drug: Cosyntropin administration
37 Recruiting Genetic Basis of Mitral Valve Prolapse
Condition: Mitral Valve Prolapse
Intervention:
38 Recruiting Orthostatic Hypotension Among Veterans
Condition: Hypotension, Orthostatic Hypotension
Intervention:
39 Recruiting Post-prandial Hypotension and Sleepiness in Parkinson's Disease and Other Synucleinopathies
Conditions: Parkinsonian Patients;   Post-prandial Sleepiness;   Orthostatic Hypotension
Interventions: Other: V1: HGPO + meal and V2: placebo + meal;   Other: V1: placebo 75mg + meal and V2: HGPO 75mg + meal
40 Recruiting Assessment of Antibodies and Inflammatory Markers in Postural Tachycardia Syndrome
Condition: Postural Orthostatic Tachycardia Syndrome
Interventions: Other: History;   Other: Physical;   Other: blood draw;   Behavioral: Questionnaires

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Indicates status has not been verified in more than two years