Table 2.
Predictive performance of ventilatory variables for Intensive care unit mortality
| Variables | RR | 95% CI | p |
|---|---|---|---|
| Tidal volume (mL) | 0.14 | 0.03–0.77 | 0.024 |
| Airway plateau pressure (cmH2O) | 1.04 | 1.00–1.08 | 0.043 |
| Respiratory system elastance (cmH2O/mL) | 1.03 | 1.01–1.04 | 0.001 |
| Lung elastance (cmH2O/mL) | 1.01 | 1.00–1.03 | 0.025 |
| Chest wall elastance (cmH2O/mL) | 1.00 | 0.93–0.96 | 0.926 |
| MP (J/min) | 1.01 | 0.99–1.03 | 0.342 |
| MP_PBW (J/min/Kg) | 2.69 | 0.75–9.57 | 0.127 |
| MP_CRS (J/min/mL/cmH2O) | 1.88 | 1.21–2.92 | 0.005 |
| MP_well-inflated tissue (J/min/g) | 3.60 | 1.19–10.87 | 0.023 |
| MP_lung gas volume (J/min/mL) | 1.01 | 0.99–1.02 | 0.167 |
| Transpulmonary MP_PBW (J/min/kg) | 1.91 | 0.55–6.67 | 0.305 |
| Transpulmonary MP_CRS (J/min/mL/cmH2O) | 1.01 | 0.99–1.02 | 0.195 |
| Transpulmonary MP_well-inflated tissue (J/min/g) | 3.91 | 1.12–13.61 | 0.032 |
| Transpulmonary MP_lung total gas (J/min/mL) | 1.01 | 0.99–1.01 | 0.190 |
| Driving pressure (cmH2O) | 1.04 | 1.00–1.08 | 0.045 |
Risk ratios (RR) and 95% confidence intervals (CI) of intensive care unit (ICU) mortality calculated with univariate Poisson regression with robust standard error
MP mechanical power, PBW predicted body weight, CRS respiratory system compliance
Italicized data are for statistically significant results