From: Management and outcome of mechanically ventilated patients after cardiac arrest
Cohort 1998 | Cohort 2004 | Cohort 2010 | P | |
---|---|---|---|---|
(N = 100) | (N = 239) | (N = 473) | ||
Age, years, mean (SD) | 66 (14) | 63 (16) | 63 (16) | 0.261 |
Female, n (%) | 37 (37) | 90 (38) | 174 (37) | 0.966 |
Body mass index, kg/cm2, mean (SD) | na | 27 (8) | 27 (7) | 0.754 |
SAPS II, points, mean (SD) | 61 (19) | 56 (20) | 59 (20) | 0.060 |
Glasgow Coma Score at admission, median (IQR) | na | 6 (3-15) | 3 (3-8) | <0.001 |
Arterial blood gases at admission | ||||
pHa, mean (SD) | 7.17 (0.09) | 7.23 (0.20) | 7.23 (0.18) | 0.003 |
PaCO2, mmHg, mean (SD) | 50 (13) | 48 (22) | 50 (23) | 0.733 |
Ratio PaO2 to FiO2, mmHg, mean (SD) | 249 (78) | 233 (116) | 221 (186) | 0.367 |
Ventilatory settings during mechanical ventilation | ||||
Tidal volume, ml/kg ABW, mean (SD) | 8.9 (2) | 7.4 (2) | 6.7 (2) | <0.001 |
Tidal volume/kg PBW mean (SD) | na | 9.04 (2.3) | 7.95 (1.7) | <0.001 |
Respiratory rate, bpm, mean (SD) | 17 (4) | 18 (6) | 19 (6) | <0.001 |
PEEP, cmH2O, mean (SD) | 3.5 (3) | 4.8 (4) | 6.5 (3) | <0.001 |
Peak pressure, cmH2O, mean (SD) | 29.1 (7.5) | 27.1 (7.9) | 24.1 (7.9) | <0.001 |
Plateau pressure, cmH2O, mean (SD) | 22.7 (3.7) | 21.5 (6.5) | 19.5 (6.3) | <0.001 |
PaCO2, , mmHg, mean (SD) | 37.3 (7.4) | 38.8 (10.4) | 39.8 (11.7) | <0.001 |
pHa, mean (SD) | 7.41 (0.08) | 7.39 (0.1) | 7.39 (0.1) | <0.001 |
Ratio PaO2 to FiO2, mmHg, mean (SD) | 238 (95) | 242 (95) | 252 (114) | <0.05 |
Sedation, n (%) | 50 (50) | 175 (73) | 332 (70) | <0.001 |
Analgesia, n (%) | 20 (20) | na | 272 (58) | <0.001 |
Neuromuscular blocking, n (%) | 8 (8) | 29 (12) | 99 (21) | <0.001 |