| |
Spontaneously breathing
(SB) |
On non-invasive ventilation (NIV) |
P-value† |
| Gender (M/F) |
9/9 |
7/8 |
|
| Age (yr) |
60 (51, 66) |
64 (55, 69) |
0.11 |
| BMI |
25.2 (21, 29) |
27 (22, 32) |
0.84 |
| FVC, L (seated) |
3.3 (2.7, 4.3) |
3.4 (2.7, 4.2) |
0.27 |
| FVC, % predicted (seated) |
70 (55, 96) |
67 (27, 88) |
0.18 |
| ΔFVC(sit – sup), % |
1.6 (0, 4.9) |
22.7 (9, 29.3) |
0.0002 |
| FEF, L/s (seated) |
5.8 (4.6, 7.5) |
3.8 (1.9, 5.3) |
0.025 |
| FEF, % predicted (seated) |
62 (46, 102) |
54 (18, 83) |
0.46 |
| ΔFEF (sit – sup), % |
10.3 (1.6, 16.7) |
8.4 (-2.2, 31.8) |
0.54 |
| Pimax, cm H2O |
67 (33, 84) (n = 8) |
30 (12, 46) (n = 6) |
0.008 |
| Pimax, % predicted |
78 (44, 96) |
40 (29, 47) |
0.08 |
| Pemax, cm H2O |
91 (43, 120) (n = 8) |
62 (32, 104) (n = 6) |
0.39 |
| Pemax, % predicted |
58 (26, 83) |
34 (26, 53) |
0.22 |
Abbreviations: FVC, forced vital capacity; FEF, forced expiratory flow; Pimax, maximal inspiratory mouth pressure; Pemax, maximal expiratory mouth pressure
Values expressed as median (1st and 3rd quantiles).
n, numbers of subjects as shown unless otherwise stated.
†Differences by 2-tailed t-test. |
