Table 2.
Lung function assessment
| Parameter | Volumetric CT | Incremental CT | p |
|---|---|---|---|
| Arterial pO2 at rest at ambient air (mmHg) | 69.3 ± 13.6 | 69 ± 14.2 | 0.924 |
| SpO2 | 96 [94.8; 97] | 95 [93; 96] | 0.201 |
| FVC (% pred) | 69.4 ± 20.6 | 67.5 ± 20.7 | 0.717 |
| FEV1 (% pred) | 75.7 ± 20.2 | 73.5 ± 21.8 | 0.694 |
| FEV1/FVC (%) | 90.2 ± 13 | 87.4 ± 11.9 | 0.387 |
| TLC (% pred) | 59.5 ± 19.5 | 57.6 ± 18.8 | 0.740 |
| DLCOsb (% pred) | 45.1 ± 17 | 46.4 ± 16.9 | 0.781 |
| 6-MWT distance (m) | 370 [274; 484] | 455 [399; 496] | 0.175 |
| Systolic PAP (mmHg) | 33 [28; 42.5] | 35 [29; 41.5] | 0.819 |
Data are expressed as mean ± SD or as median [25th; 75th percentile]
Abbreviations: pO2 = O2, arterial partial pressure; SpO2, oxygen saturation; FVC, forced vital capacity; FEV1, forced expiratory volume/first second; TLC, total lung capacity; DLCOsb, diffusing lung capacity for carbon monoxide single breath; 6MWT, 6-min walking test; PAP, pulmonary artery pressure