Sites for left ventricular measurements

Measurements of left ventricular (LV) dimensions can be obtained from various views from the two-dimensional echocardiogram. Panel A is the apical four-chamber view; M-mode tracings cannot be made from an apical view and thus measurements must be made directly from the two-dimensional image. The dimensions of the right ventricle (RV) can also be obtained from this view. Panel B is the short axis precordial view; measurements from the short axis can be made interchangeably from either M-mode or two-dimensional image. Panel C is the long axis precordial view; measurements of LV dimension can be made from either the two-dimensional image or the M-mode tracing.