- Conditions
- Postural Orthostatic Tachycardia Syndrome, Postural Tachycardia Syndrome, Tachycardia, Arrhythmias, Cardiac, Autonomic Nervous System Diseases, Orthostatic Intolerance, Cardiovascular Diseases, Primary Dysautonomias
- Interventions
- phenylephrine, isoproterenol, 25 micro-Ci of radiation, Posture study with blood samples, 24-hour heart rhythm and blood pressure monitoring, Quantitative Axonal Sudomotor Reflex Testing, Autonomic function tests, Rebreathing test, Assessment of splanchnic capacitance, microneurography
- Drug · Radiation · Procedure + 1 more
- Lead sponsor
- Vanderbilt University Medical Center
- Other
- Eligibility
- 18 Years to 50 Years
- Enrollment
- 58 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2016 – 2026
- U.S. locations
- 2
- States / cities
- Oklahoma City, Oklahoma • Nashville, Tennessee
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- Conditions
- Autonomic Nervous System Diseases, Orthostatic Hypotension, Dopamine Beta-Hydroxylase Deficiency, Orthostatic Intolerance
- Interventions
- Standing or upright tilt, Microneurography, QSweat, neck cuff stimulation, phenylephrine,isoproterenol,nitroprusside,propranolol,edrophonium,atropine,tyramine, clonidine,yohimbine,metoclopramide,alpha-methyldopa, BodPod, Eye exam, Sleep study, Pain response testing, Metabolic chamber, Brain function studies, Bicycle Exercise Test
- Procedure · Device · Drug
- Lead sponsor
- Vanderbilt University Medical Center
- Other
- Eligibility
- 12 Years to 70 Years
- Enrollment
- 10 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 1996 – 2020
- U.S. locations
- 1
- States / cities
- Nashville, Tennessee
- Conditions
- Chronic Fatigue Syndrome
- Interventions
- Posture Study, Autonomic Function Tests, and a Stress Test
- Other
- Lead sponsor
- Vanderbilt University Medical Center
- Other
- Eligibility
- 18 Years to 60 Years
- Enrollment
- 55 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2017 – 2018
- U.S. locations
- 1
- States / cities
- Nashville, Tennessee