Table 1 Patient characteristics and factors related to NIV
Total | Successful | Reintubation | P value | |
|---|---|---|---|---|
Number of patients (%) | 94 | 89 (94%) | 5 (6%) | |
Age; years | 67 ± 9 | 68 ± 9 | 63 ± 8 | 0.1995 |
Sex; female/male | 30/64 | 29/60 | 1/4 | 0.5569 |
APACHE II score | 15 ± 5 | 15 ± 5 | 18 ± 4 | 0.1793 |
SAPS II | 28 ± 7 | 28 ± 7 | 30 ± 6 | 0.5717 |
Hypertension; n (%) | 63 | 62 (70%)* | 1 (20%) | 0.0215 |
Diabetes mellitus; n (%) | 38 | 36 (40%) | 2 (40%) | 0.9841 |
Renal replacement therapy; n (%) | 20 | 19 (21%) | 1 (20%) | 0.9429 |
Reasons for AHRF; n (%) | ||||
Cardiac pulmonary edema | 58 | 56 (63%) | 2 (40%) | 0.3049 |
Atelectasis | 26 | 24 (27%) | 2 (40%) | 0.5261 |
ALI | 9 | 8 (9%) | 1 (20%) | 0.4155 |
Exacerbation of COPD | 1 | 1 (1%) | 0 (0%) | 0.8117 |
Mode of NIV; n (%) | ||||
CPAP | 85 | 82 (92%) | 3 (60%) | 0.0586 |
Bilevel-PAP | 9 | 7 (8%) | 2 (40%) | 0.0586 |
PEEP (cmH2O) | 7 ± 2 | 7 ± 2 | 7 ± 2 | 0.8293 |
Pressure support (cmH2O) | 4 ± 2 | 4 ± 1 | 4 ± 3 | 1 |
Time from hypoxemia to starting NIV (h) | 2 ± 2 | 2 ± 2 | 3 ± 3 | 0.5394 |
Time from extubation to NIV (h) | 20 ± 20 | 21 ± 21 | 8 ± 9 | 0.1638 |
NIV duration (h) | 31 ± 24 | 32 ± 23 | 24 ± 37 | 0.1112 |