Oxygen alone (n=17) | Oxygen + NO (n=15) | ||||
---|---|---|---|---|---|
Baseline | 3 months | Baseline | 3 months | p value | |
Values are mean (SD). | |||||
FEV1=forced expiratory vlume in 1 second; FEV1%FVC=forced expiratory volume in 1 second as a percentage of forced expiratory vital capacity; TLC=total lung capacity; RV=residual volume; RV%TLC=residual volume as a percentage of total lung capacity; Pao2=arterial oxygen tension; Paco2=arterial carbon dioxide tension; Pvo2=central veneous oxygen tension; Met Hb=partial arterial methaemoglobin pressure. | |||||
FEV1 (l) | 1.29 (0.7) | 1.28 (0.7) | 1.09 (0.4) | 1.07 (0.4) | 0.742 |
FEV1%FVC (%) | 45.6 (13.6) | 46.1 (13.2) | 44.5 (13.0) | 45.5 (13.3) | 0.797 |
TLC (l) | 7.0 (1.4) | 7.0 (1.4) | 6.2 (2.4) | 6.7 (1.6) | 0.836 |
RV (l) | 4.2 (1.5) | 4.3 (1.6) | 4.2 (1.5) | 4.4 (1.6) | 0.797 |
RV%TLC (%) | 59.4 (14.8) | 60.2 (14.0) | 61.6 (10.1) | 58.9 (17.9) | 0.318 |
Pao2 (kPa) | 11.4 (4.2) | 10.6 (1.9) | 10.5 (1.8) | 10.1 (1.6) | 0.739 |
Paco2 (kPa) | 7.4 (1.4) | 6.7 (1.1) | 7.4 (1.4) | 6.7 (1.1) | 0.037 |
Pvo2 (kPa) | 5.5 (0.6) | 5.4 (0.3) | 5.7 (0.4) | 5.6 (0.6) | 0.512 |
Met Hb (mm Hg) | 0.4 (0.2) | 0.5 (0.1) | 0.4 (0.1) | 0.5 (0.2) | 0.614 |