Spirometer

1

TLC/ Total Lung Capacity - IRV+TV+ERV+RV

2

TV / Tidal Volume - Amount of air that moves in and out of the lungs during a normal breath (500 mL)

3

IRV/ Inspiratory Reserve Volume - Amount of air that can be forcefully inhaled after a normal tidal volume inhalation (3100 mL)

4

IC/ Inspiratory Capacity - tidal volume + inspiratory reserve volume (TV+IRV)

5

VC/Vital Capacity - The total volume of air that can be exhaled after maximal inhalation. (IRV+TV+ERV)

6

EC/ Expiratory Capacity - the sum of ERV + TV

7

ERV/ Expiratory Reserve Volume - Amount of air that can be forcefully exhaled after a normal tidal volume exhalation (1200 mL)

8

RV/ Residual Volume - Amount of air remaining in the lungs after a forced maximum exhalation (1200 mL)

9

FRC/ Functional Residual Capacity - expiratory reserve volume + residual volume (ERV+RV)

10

Normal Breathing

11

Max Inhale

12

Normal Breathing

13

Deep Exhale

14

Normal Breathing