Results of vital capacity tests and blood gas analysis
| Normal value | NIPPV group, mean (SD) | Control group, mean (SD) | |
|---|---|---|---|
| ELBG = earlobe blood gas analysis; NIPPV = noninvasive positive pressure ventilation; VC = vital capacity. | |||
| Percent predicted VC, % | |||
| Baseline | >80 predicted | 53 (22) | 95 (15) |
| Visit 1 | 63 (14) | 106 (10) | |
| Visit 4 | Not done | 88 (20) | |
| ELBG Pco2, mm Hg | |||
| Baseline | 36–45 | 51 (9) | 35 (3) |
| Visit 1 | 42 (3) | 36 (1) | |
| Visit 4 | 42 (1) | 38 (1) | |
| ELBG Po2, mm Hg | |||
| Baseline | >75 | 74 (10) | 86 (10) |
| Visit 1 | 84 (10) | 85 (11) | |
| Visit 4 | 73 (6) | 81 (5) | |
| ELBG bicarbonate, mmol/L | |||
| Baseline | 24–28 | 33 (3) | 24 (2) |
| Visit 1 | 27 (2) | 25 (1) | |
| Visit 4 | 28 (2) | 26 (1) | |