Figure 7: Abdominal scan of inferior vena cava and subcostal 4-chambers scan of the heart. A: Ultrasound pattern of hypovolaemia: inferior vena cava is slight with complete inspiratory collapse. Complete left ventricular end systolic obliteration. B: After volume expansion inferior vena cava increases the diameter and left ventricular end systolic obliteration disappears. IVC=inferior vena cava, RV=right ventricle, LV=left ventricle.