Figure 3From: Changes in aortic blood flow induced by passive leg raising predict fluid responsiveness in critically ill patientsROC curves comparing delta ABF, LVETc and ΔPP to discriminate responders and non-responders. Abbreviations: ROC = Receiver Operating Characteristic; ABF = aortic blood flow; PLR = passive leg raising; LVETc = left ventricular ejection time corrected for heart rate; ΔPP = respiratory variation of pulse pressure.Back to article page