Figure 2From: Respiratory variations of inferior vena cava diameter to predict fluid responsiveness in spontaneously breathing patients with acute circulatory failure: need for a cautious useReceiver operator characteristic (ROC) curve for inferior vena cava collapsibility (cIVC) (%) after infusion of 500 mL of HES. Area under the ROC curve was 0.77 (95% CI 0.60, 0.88).Back to article page