Salt mystery in POTS: do kidneys hold the key?
NCT ID NCT00581633
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study compares how the kidneys handle salt in people with postural orthostatic tachycardia syndrome (POTS) versus healthy volunteers. Researchers give a liter of saline intravenously and measure how much sodium is excreted in urine. The goal is to see if POTS patients have trouble conserving salt, which could help explain their symptoms.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- normal saline (0.9%)
- What this could lead to
- If successful, this could help explain why some people with POTS have trouble regulating salt and water, potentially pointing toward better management strategies.
- What could go wrong
- This is a small, early-stage observational study with only 30 participants. It is not testing a treatment, so it may not lead directly to new therapies.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Vanderbilt University
Nashville, Tennessee, 37232, United States
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