Fig. 1From: Comparison of superior and inferior vena cava diameter variation measured with transthoracic echocardiography to predict fluid responsiveness in mechanically ventilated patients after abdominal surgeryM-mode visualization of the superior vena cava (SVC) measured with transthoracic echocardiography showing the maximal (SVCmax1) and minimal (SVCmin1) diameters over the respirophasic cycle and maximal (SVCmax2) and minimal (SVCmin2) diameters over the cardiac cycleBack to article page