Healthy volunteers help doctors understand vein collapse
NCT ID NCT01644760
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looked at how the inferior vena cava, a large vein returning blood to the heart, changes size with breathing in 52 healthy volunteers. Researchers used ultrasound to measure the vein's diameter and diaphragm movement during controlled breaths. The goal was to find a breathing-related threshold that predicts a 50% collapse of the vein, which could help doctors assess fluid status in patients.
Disclaimer
Read more
Show less
This is a summary of
the original study
.
Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for COLLAPSIBILITY OF THE INFERIOR VENA CAVA are added.
By submitting, you agree to our Terms of use
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Show contact details
Enter your email to view the contact information for this study.
By submitting, you agree to our Terms of use
Locations
-
CHU de Nîmes - Hôpital Universitaire Carémeau
Nîmes, 30029, France