Long COVID heart mystery: scientists probe Nerve-Immune link
NCT ID NCT05421208
First seen Jun 25, 2026 · Last updated Jul 16, 2026 · Updated 3 times
Summary
This study looks at why some people develop a fast heart rate and dizziness months after COVID-19, a condition called post-COVID tachycardia syndrome. Researchers will measure immune markers and nerve activity in 60 participants to see if ongoing inflammation and reduced vagal nerve function are the cause. The goal is to better understand long COVID, not to test a new treatment.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- What this could lead to
- If successful, this could reveal why long COVID causes rapid heart rate and point toward future treatments targeting the immune or nervous system.
- What could go wrong
- This is an early observational study with only 60 people. It aims to understand the condition, not test a treatment, so direct benefits are unlikely.
This is an AI summary of the original study and may miss details. Read our disclaimer.
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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
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Vanderbilt University Medical Center
Nashville, Tennessee, 37232, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Five years on: how does long COVID evolve?
- Could exercise retrain the heart in long COVID?
- Can brain games and gentle currents lift long COVID brain fog?
- Can a digital swab test tell COVID and flu apart at home?
- Sniffing your way back: does scent therapy rebuild COVID-Shattered smell?
- Spirulina extract put to the test against long COVID inflammation