Figure 4
From: Neuroventilatory efficiency and extubation readiness in critically ill patients
Upper left panel shows the ROC curve (receiver operating characteristic) for neuroventilatory efficiency (NVE) to predict extubation success after 5 minutes of the spontaneous breathing trial (T 5 ). Area under the curve (AUC) was 0.84 (P < 0.001). Upper right panel shows the ROC curve for diaphragm electrical activity (EAdi) to predict extubation failure at T5. AUC was 0.73 (P < 0.009). Lower left panel shows ROC curve for neuromuscular efficiency (NME) to predict extubation success at T5. AUC = 0.70 (P < 0.02).The lower right panel shows the ROC curve for the ratio of breathing frequency and tidal volume (f/Vt) to predict extubation failure at T5. AUC was 0.72 (P = 0.012).