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MVV
PEF
Ratio
Rate
Volume-Time
Curve
Maximal Voluntary Ventilation, expressed in liters
per minute. The largest volume of air inhaled or
exhaled over a timed period, typically 12 to 15
seconds, which is then extrapolated to one minute.
The maneuver should imitate the rapid breathing
of strenuous exercise.
Peak Expiratory Flow Rate in liters per second. It is
the highest instantaneous flow during an FVC
maneuver. It is an index of patient effort.
See FEVl /FVC%.
The breathing rate during an MVV maneuver,
expressed in breaths per minute.
The traditional spirogram obtained from
a volume spirometer, with time increasing on the
horizontal axis to the right and volume increasing
upwards on the vertical axis.
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