Relationship between pulmonary function test (PFT) results, dyspnoea, fatigue, and pneumothorax
| PFT | Dyspnoea with exertion | Fatigue | History of pneumothorax | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Yes | No | p value | Yes | No | p value | Yes | No | p value | |
| FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; TLC, total lung capacity; RV, residual volume; Tlco, carbon monoxide transfer factor. | |||||||||
| FEV1 (% predicted) | 60.8 | 80.7 | 0.0001 | 64.0 | 74.6 | 0.05 | 67.2 | 67.1 | 0.97 |
| FVC (% predicted) | 81.4 | 86.4 | 0.21 | 83.3 | 84.4 | 0.78 | 80.5 | 88.7 | 0.05 |
| FEV1/FVC | 52.8 | 68.1 | 0.0013 | 53.0 | 66.8 | 0.0017 | 60.2 | 52.7 | 0.10 |
| TLC (% predicted) | 99.7 | 92.0 | 0.02 | 99.2 | 94.6 | 0.19 | 93.8 | 104.7 | 0.001 |
| RV (% predicted) | 131.0 | 106.4 | 0.0011 | 127.8 | 113.0 | 0.09 | 118.9 | 129.6 | 0.216 |
| RV/TLC | 45.1 | 37.4 | 0.002 | 44.2 | 39.4 | 0.054 | 41.5 | 43.9 | 0.34 |
| Tlco,c (% predicted) | 61.3 | 82.6 | 0.0001 | 64.2 | 74.2 | 0.08 | 67.6 | 68.6 | 0.88 |
| Tlco,sb (% predicted) | 59.1 | 80.5 | 0.0002 | 63.4 | 70.2 | 0.22 | 66.1 | 65.8 | 0.95 |