Fig. 3From: Carotid and femoral Doppler do not allow the assessment of passive leg raising effectsReceiver operating characteristic curves describing the ability of changes in carotid femoral blood flows to detect a positive response of cardiac index to a passive leg raising test (increase ≥ 10%). AUC area under the curve. Asterisks results are provided for carotid blood flow measured by the velocity time integral methodBack to article page