Huguet R, et al. - In patients with cardiogenic shock, inferior vena cava (IVC) size and collapsibility index, obtained by three-dimensional (3D) echocardiography for assessing central venous pressure (CVP), were investigated for their accuracy. For this analysis, 80 consecutive echocardiographic examinations performed in 33 subjects admitted for cardiogenic shock were prospectively involved. The findings demonstrated that inferior vena cava collapsibility index (IVCCI) from area by 3D echocardiography was reproducible and accurate to assess CVP in subjects with cardiogenic shock.