Results of spirometry
| Reference value | Patient’s value | Percent of predicted | |
|---|---|---|---|
| Forced vital capacity (FVC) | 3.60 L | 3.22 L | 90% |
| Forced expiratory volume in 1 second (FEV1) | 2.83 L | 0.98 L | 35% |
| FEV1/FVC | 80 | 30 | |
| Forced expiratory flow 25%–75% | 2.70 L/sec | 0.59 L/sec | 22% |
| Peak expiratory flow | 6.03 L/sec | 1.22 L/sec | 20% |
| Vital capacity | 3.60 L | 3.26 L | 91% |
| Residual volume | 1.86 L | 2.06 L | 111% |
| Total lung capacity | 5.15 L | 5.32 L | 103% |