Fig. 3From: Effect of subclavian vein diameter combined with perioperative fluid therapy on preventing post-induction hypotension in patients with ASA status I or IIComparison of Receiver Operating Characteristic (ROC) curves of subclavian vein (SCV) collapsibility index (SCVCI), SCV variability (SCVvariability), and the minimum (dSCVmin) and maximum (dSCVmax) SCV dimensions to predict PIH. The triangles on the curves show the optimal cutoff values determined by maximizing the Youden indexBack to article page