Table 1.
Lung function results in sitting and supine positions
| Predicted | Sitting position | Supine position | Sitting/supine | |||||
| Actual | % pred | LLN | ULN | Actual | % pred | |||
| Case 1 | ||||||||
| FEV1 L | 3.49 | 1.47 | 42% | 76.0 | 124 | 0.79 | 23% | 54% |
| FVC IN L | 4.77 | 2.92 | 61% | 80.7 | 119 | 1.65 | 35% | 57% |
| FEV1 % VCmax | 74.4% | 50.5% | 68% | 84.2% | 116% | 39.3% | 53% | 78% |
| FVC L | 4.59 | 2.90 | 63% | 78.2 | 122 | 2.01 | 44% | 69% |
| Case 2 | ||||||||
| FEV1 L | 3.57 | 2.29 | 64% | 76.5 | 124 | 1.10 | 31% | 48% |
| FVC IN L | 4.82 | 2.82 | 59% | 80.9 | 119 | 1.53 | 32% | 54% |
| FEV1 % VCmax | 75.2 | 81.0 | 108% | 84.4 | 116 | 72.3 | 96% | 89% |
| FVC L | 4.63 | 2.60 | 56% | 78.4 | 122 | 1.13 | 24% | 44% |
LLN: lower limit of normal; ULN: upper limit of normal; FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; IN: inspiratory; VCmax: maximal vital capacity.