Expired Study
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Nashville, Tennessee 37232


The purpose of this study is to try different medications in patients with low blood pressure and other problems with their involuntary (autonomic) nervous system. The pharmacological trials in this study will perhaps lead to more effective treatment. This study consists of single dose trials, dose selection trials, 5-day trials and chronic (approximately 2 months) trials.

Study summary:

We see many patients at the Autonomic Dysfunction Center who can be given a fairly definitive diagnosis, e.g., Orthostatic Intolerance, Pure Autonomic Failure, Multiple System Atrophy, and Baroreflex Failure. However, some patients present with a unique constellation of symptoms of autonomic dysfunction so that they do not fit into a diagnostic category. We hypothesize that a genetic cause exists in some of these patients. We further propose that our comprehensive evaluation of these patients will provide us with information on the pathophysiology of their condition and assist us in optimizing their treatment.


Inclusion Criteria: - patients with severe orthostatic hypotension and other autonomic symptoms who do not meet criteria for one of our standard diagnoses - non-smokers - drug-free - able to give informed consent - free of pulmonary, renal, hematopoietic, hepatic and cardiac disease Exclusion Criteria: - medications affecting the autonomic nervous system - any chronic illness (cardiac, pulmonary, endocrine, gastrointestinal, rheumatologic) - anemia (Hct < 30) - women of childbearing age who are pregnant or nursing - smokers



Primary Contact:

Principal Investigator
David Robertson, MD
Vanderbilt University

Backup Contact:


Location Contact:

Nashville, Tennessee 37232
United States

There is no listed contact information for this specific location.

Site Status: N/A

Data Source: ClinicalTrials.gov

Date Processed: October 09, 2019

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