Trimethaphan for High Blood Pressure
Trial Summary
Do I need to stop my current medications for the trial?
The trial information does not specify whether you need to stop taking your current medications. It's best to discuss this with the trial coordinators for more details.
How does the drug Trimethaphan differ from other high blood pressure treatments?
Trimethaphan is unique because it works by blocking nerve signals that cause blood vessels to tighten, which is different from many other blood pressure medications that often target hormones or fluid balance. This mechanism can lead to a rapid decrease in blood pressure, making it useful in emergency situations.12345
What is the purpose of this trial?
The purpose of this study is to learn more about the regulation of the veins of the abdomen by the autonomic (involuntary) nervous system, and how this may affect high blood pressure. Normally, the autonomic nervous system controls how much blood flows in the veins. In people with high blood pressure, however, the autonomic nervous system is changed. This change may affect the way blood flows in the veins of the abdomen which may play a role in their high blood pressure. About 32 participants will be screened for the study. The investigators estimate 16 will be eligible to participate in all of the study days.
Research Team
Italo Biaggioni, MD
Principal Investigator
Vanderbilt University
Eligibility Criteria
This trial is for adults aged 40-80 with Multiple System Atrophy and specific blood pressure conditions: high blood pressure when lying down (≥150 mmHg) and a significant drop upon standing. Participants must be able to consent and have no recent major surgeries, severe reflux, implanted medical devices in the abdomen, or systemic illnesses like diabetes that affect nerves.Inclusion Criteria
Exclusion Criteria
Timeline
Screening
Participants are screened for eligibility to participate in the trial
Study Day 1
Participants undergo a randomized, single blind, crossover study with either trimethaphan or placebo
Study Day 2
Participants undergo the second part of the crossover study with the alternate treatment (trimethaphan or placebo)
Follow-up
Participants are monitored for safety and effectiveness after treatment
Treatment Details
Interventions
- Placebo
- Trimethaphan
Find a Clinic Near You
Who Is Running the Clinical Trial?
Vanderbilt University
Lead Sponsor