Variable | Respiratory acidosis (n= 122) | Metabolic acidosis (n= 89) | Mixed acidosis (n= 66) | Controls (n= 88) | P value (chi-square test) |
---|---|---|---|---|---|
Clinical failure | 12 (10) | 11 (13) | 4 (6.2) | 8 (9.3) | 0.613 |
Change to bi-level | 5 (4.1) | 0 (0) | 0 (0) | 0 (0) | 0.018 |
Change to intubation | 1 (0.8) | 2 (2.2) | 2 (3.0) | 0 (0) | 0.341 |
ACPE-related mortality | 1 (0.8) | 4 (4.5) | 1 (1.5) | 1 (1.1) | 0.237 |
Late mortality | 8 (6.8) | 7 (8) | 2 (3.1) | 7 (8.1) | 0.595 |
In-hospital mortality | 9 (7.6) (CI, 4.1 to 14.1) | 11 (12.6) (CI, 7.4 to 21.7) | 3 (4.6) (CI, 1.6 to 13.1) | 8 (9.3) (CI, 4.9 to 17.7) | 0.351 |
Length of hospital stay (days) | 11 ± 7 | 11 ± 9 | 10 ± 5 | 13 ± 22 | 0.582a |