Table 3.
Comparison of Ventilator Characteristics With and Without Barotrauma on Day 0, Day 14, and Day of Barotrauma.
| Ventilator characteristics | No barotrauma N = 59 | Barotrauma N = 16 | p-value | |
|---|---|---|---|---|
| Day 0: | ||||
| Ventilator mode | VC | 67% (4) | 0% (0) | 0.07 |
| PC | 17% (1) | 0% (0) | ||
| APRV | 0% (0) | 100% (2) | ||
| T-piece | 17% (1) | 0% (0) | ||
| PaO2: FiO2 Ratio | 205 (98) | 167 (90) | 0.19 | |
| Peak Inspiratory Pressure | 25.0 (1.4) | 25.3 (8.8) | 0.95 | |
| Mean Airway Pressure | 10.4 (0.8) | 19.3 (14.5) | 0.23 | |
| Positive End Expiratory Pressure | 7.0 (2.4) | 6.5 (2.1) | 0.82 | |
| Minute Ventilation (L/min) | 14.1 (2.5) | 9.8 (2.5) | 0.12 | |
| cc/kg (Ideal Body Weight) | 8.4 (2.5) | 7.1 (2.1) | 0.55 | |
| Day 14: | ||||
| Ventilator mode | VC | 22% (2) | 25% (2) | 1.00 |
| PC | 67% (6) | 75% (6) | ||
| CPAP | 11% (1) | 0% (0) | ||
| PaO2: FiO2 Ratio | 179 (103) | 109 (47) | 0.03 | |
| Peak Inspiratory Pressure | 35.7 (9.3) | 32.6 (9.2) | 0.38 | |
| Mean Airway Pressure | 20.1 (6.3) | 19.7 (5.4) | 0.78 | |
| Positive End Expiratory Pressure | 11.8 (5.5) | 14.1 (2.9) | 0.29 | |
| Minute Ventilation (L/min) | 13.7 (4.9) | 11.0 (1.2) | 0.11 | |
| cc/kg (Ideal Body Weight) | 7.7 (2.6) | 6.4 (1.2) | 0.16 | |
| Comparison on day of Barotrauma | Day 14 | Day of Barotrauma | ||
| Ventilator Mode | VC | 25% (2) | 38% (5) | 0.049 |
| PC | 75% (6) | 23% (3) | ||
| APRV | 0% (0) | 38% (5) | ||
| Peak Inspiratory Pressure | 35.7 (9.3) | 29.4 (7.5) | 0.08 | |
| Mean Airway Pressure | 20.1 (6.3) | 19.4 (6.2) | 0.77 | |
| Positive End Expiratory Pressure | 11.8 (5.5) | 12 (5.5) | 0.94 | |
| PaO2: FiO2 Ratio | 146 (92) | 116 (74) | 0.37 | |
| Minute Ventilation (L/min) | 13.7 (4.9) | 12.2 (4.3) | 0.45 | |
| Tidal volume (mL/kg ideal body weight) | 7.7 (2.6) | 6.8 (1.5) | 0.31 |