Instruction manual

5 Analysis 63
Spirometry
TV: Tidal Volume
IRV: Inspiratory Reserve Volume
ERV: Expiratory Reserve Volume
FEV1: Forced Expiratory Volume in one second. How much air can be exhaled in the first
second of expiration
FEV3: Forced Expiratory Volume in three seconds. How much air can be exhaled in the first
three seconds of expiration
VC: Vital Capacity
PEF: Peak Expiratory Flow
PIF: Peak Inspiratory Flow
TFR:Tidal Flow Rate.
IC: Inspiratory Capacity (IC) = TV + IRV
EC: Expiratory Capacity (EC) = TV + ERV
FRC: Functional Residual Capacity (FRC) = ERV + RV
TLV: Total Lung Capacity (TLC) = TV + RV + IRV + ERV