Table 2 Procedure-level Characteristics: Late Postoperative Respiratory Failure compared to No Postoperative Respiratory Failure
Variablea | Total Sample (n = 190) | No PRF (n = 95) | L-PRF (n = 95) | Unadjusted Odds Ratio (95% CI) |
|---|---|---|---|---|
Procedure | ||||
 General Anesthesia, n (%) | 186 (97.9) | 92 (96.8) | 94 (98.9) | 3.67 (0.32–41.78) |
 Neuromuscular Blockade, n (%) | 178 (93.7) | 87 (91.6) | 91 (95.8) | 2.33 (0.60–9.02) |
 Anesthesia duration per hour, median (IQR) | 6.4 (4.4, 8.1) | 5.5 (3.9, 7.1) | 7.1 (4.7, 8.9) | 1.23 (1.09–1.41) |
 Surgical duration per hour, median (IQR) | 4.6 (3.0, 6.5) | 3.8 (2.7, 5.6) | 5.3 (3.3, 7.2) | 1.21 (1.07–1.39) |
Intraoperative Ventilator Management | ||||
 Tidal Volume (highest) (cc/kg) predicted body weight, median (IQR) | 8.8 (7.9, 9.9) | 8.8 (7.9, 9.9) | 8.9 (7.8, 10.3) | 1.13 (0.95–1.34) |
 Positive End Expiratory Pressure (highest), median (IQR) | 5 (5, 6) | 5 (5, 6) | 5 (5, 8) | 1.09 (0.95–1.26) |
 Peak Inspiratory Pressure (highest), median (IQR) | 23 (19, 28) | 21 (18, 25.5) | 25 (20, 29) | 1.14 (1.07–1.21) |
Intraoperative Fluid Management | ||||
 Crystalloid Administered (per 1000 cc), median (IQR) | 2.2 (1.5, 3.2) | 2 (1.4, 3) | 2.5 (1.6, 3.5) | 1.24 (0.99–1.55) |
 Colloid Administered (per 250 cc), median (IQR) | 0 (0, 4) | 0 (0, 2) | 1 (0, 4) | 1.10 (1.01–1.20) |
 Blood Transfused (per 250 cc), median (IQR) | 0 (0, 1) | 0 (0, 0) | 0 (0, 2) | 1.02 (0.99–1.05) |
 Net Fluid in first 24 hours post-op (cc/kg), median (IQR) | 24.4 (8.6, 47.0) | 21.2 (7.9, 37.8) | 26.6 (9.2, 65.5) | 1.007 (1.0003–1.01) |