Mechanical power normalized to lung-thorax compliance predicts prolonged ventilation weaning failure: a prospective study

Table 4 Area under the ROC curve for each variable—all patients

Variables	Failure of prolonged weaning
Variables	Post-SBT	Pre-weaning completion
P_aCO₂ on MV	0.81 (0.73–0.87)	0.86 (0.78–0.91)
VR	0.78 (0.70–0.85)	0.74 (0.66–0.81)
LTC_dyn	0.74 (0.65–0.81)	0.82 (0.75–0.89)
MP	0.74 (0.65–0.81)	0.70 (0.61–0.77)
PBW-MP	0.76 (0.68–0.83)	0.75 (0.66–0.82)
LTC_dyn-MP	0.79 (0.71–0.86)	0.86 (0.78–0.91)
PI_rs^1.0	0.84 (0.76–0.90)	0.91 (0.84–0.95)
PI_rs^2.0	0.86 (0.79–0.92)	0.92 (0.86–0.96)

The accuracy of each variable in the whole study population presented as the area under the ROC curve with 95% confidence intervals
SBT spontaneous breathing trial, MV mechanical ventilation, VR ventilatory ratio, LTC_dyn dynamic lung-thorax compliance, MP mechanical power, PBW-MP mechanical power normalized to predicted body weight, LTC_dyn-MP mechanical power normalized to dynamic lung-thorax compliance, PI_rs power index of the respiratory system

ISSN: 1471-2466