Figure 3From: Focused cardiac ultrasound: a training course for pediatric intensivists and emergency physicians Cardiac index calculation. A- Measurement of the left ventricle outflow tract by the parasternal long-axis view (diameter of the aortic annulus during systole). B and C- Measurements of aortic VTI through pulsed wave sample volume (*) at the aortic annulus (apical 5-chamber view). Ao, aorta; LA, left atrium; LV, left ventricle.Back to article page