Fig. 2From: Exploring the predictive value of combined ultrasound parameters for spinal anesthesia-induced hypotension in cesarean section: a prospective observational studyArea under the receiver operating characteristic curve of HR + LVEDAs + VTI% compared to single parameter. HR: heart rate; LVEDAs: left ventricular end-diastolic area in supine position; VTI%: percentage change between positions of velocity time integral. *vs. HR + LVEDAs + VTI%, P < 0.05Back to article page