Fig. 3From: The transverse diameter of right common femoral vein by ultrasound in the supine position for predicting post-spinal hypotension during cesarean deliveryReceiver operating characteristics (ROC) curve of transverse diameter of RCFV before the spinal anesthesia for cesarean delivery. The optimal cut-off value for for predicting the incidence of hypotension in RCFV was 12.2 mm, area under the ROC curve, with 95% CIs showed in the figure. RCFV, right common femoral veinBack to article page