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The accuracy of echocardiographic assessment of left ventricular size in children by the 5/6 area x length (bullet) method.

Research paper by James C JC Nielsen, Irene D ID Lytrivi, H Helen HH Ko, Jen J Yau, Puneet P Bhatla, Ira A IA Parness, Shubhika S Srivastava

Indexed on: 24 Apr '10Published on: 24 Apr '10Published in: Echocardiography



Abstract

Left ventricular end-diastolic volume (LVEDV) calculation is important in decision making in children with congenital heart disease (CHD). This study examined the accuracy of LVEDV calculation by the formula: 5/6 x area x length ("bullet" method), by comparing echocardiographic (ECHO) LVEDV against cardiac magnetic resonance (CMR).ECHO and CMR data from 72 consecutive subjects with CHD < or =10 years of age were retrospectively reviewed. Exclusion criteria included: >3 months between examinations; unavailable or poor-quality images. Subxiphoid short- and long-axis echocardiographic images were analyzed. Bullet LVEDV was compared to CMR volumes.Seventeen subjects (median age 5.5 years, range 1-10 years) comprised the study group. ECHO and CMR LVEDV showed an excellent correlation (r = 0.97) and a good agreement with a mean difference (limits of agreement) of -1.0 mL (-13.9 to 11.9 mL).Subxiphoid echocardiographic bullet method of measuring LVEDV shows a good agreement with CMR obtained LV size in young children.

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