| Total | Success | Failure | p value |
---|---|---|---|---|
n = 173 | n = 162 | n = 11 | ||
Female, n (%) | 59 (34.1) | 55 (34.0) | 4 (36.4) | 0.696* |
Age (years) | 68.2 ± 12.8 | 68.2 ± 12.9 | 69.3 ± 11.7 | 0.854 |
APACHE II score | 17.6 ± 5.7 | 17.2 ± 5.3 | 23.4 ± 8.7 | 0.015 |
BMI | 23.9 ± 4.2 | 24.1 ± 4.2 | 22.1 ± 3.8 | 0.075 |
HR (bpm) | 77 ± 13.5 | 76.3 ± 13.1 | 87.1 ± 15.6 | 0.018 |
RR (/min) | 16.1 ± 4.7 | 15.7 ± 4.1 | 23.3 ± 7.0 | 0.000 |
TV (mL) | 457.4 ± 102.3 | 461 ± 98.8 | 405.4 ± 140.6 | 0.031 |
RSBI | 38.4 ± 18.3 | 36.6 ± 15.7 | 64.3 ± 31.8 | 0.002 |
PEEP (cmH2O) | 6.1 ± 1.4 | 6.2 ± 1.3 | 5.3 ± 2.4 | 0.065 |
SpO2 (%) | 99.2 ± 1.0 | 99.2 ± 0.98 | 98.6 ± 1.4 | 0.076 |
EtCO2 (mmHg) | 39.3 ± 5.2 | 39.4 ± 4.8 | 37.8 ± 9.3 | 0.828 |
LTC (mL/cmH2O) | 70.1 ± 23.6 | 71.9 ± 23.0 | 43.3 ± 14.6 | < 0.0001 |