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Home > Health Library > Residual volume (RV)
Residual volume is the amount of air that remains in a person's lungs after fully exhaling. Doctors use tests to measure a person's residual air volume to help check how well the lungs are functioning. It is normal to have some air remain after exhaling to keep the lungs from collapsing.
Residual volume is measured by:
Current as of: July 6, 2021
Author: Healthwise Staff
Medical Review:E. Gregory Thompson MD - Internal Medicine & Adam Husney MD - Family Medicine & Mark A. Rasmus MD - Pulmonology, Critical Care Medicine, Sleep Medicine
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