The maximum rate of gas flow, beginning at the point of peak inspiratory capacity, that can be sustained during forced exhalation for a defined period of time.

The maximum rate of gas flow, beginning at the point of peak inspiratory capacity, that can be sustained during forced exhalation for a defined period of time. This test is most often used in combination with other studies of lung function to diagnose and monitor obstructive and restrictive lung disease(s). [ NCI ]

Synonyms:

PEF

This is just here as a test because I lose it

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