Inspiratory Capacity: It is the maximum volume of air that can be inhaled following a resting state. It is calculated from the sum of inspiratory reserve volume and tidal volume. IC = IRV+TV
Lung capacities in healthy adults
| Volume | Average value (litres) | Derivation | |
|---|---|---|---|
| In men | In women | ||
| Inspiratory capacity | 3.8 | 2.4 | IRV + TV + ERV |
Formula:
IC = IRV+TV
WhereIRV is Inspiratory reserve volume
TV is Tidal volume
IC is Inspiratory Capacity