Why the study?
Does the echocardiographic bullet method accurately measure LVEDV compared to CMR in children with congenital heart disease?
Does the echocardiographic bullet method accurately measure LVEDV compared to CMR in children with congenital heart disease?
The subxiphoid echocardiographic bullet method provides an accurate estimation of left ventricular end-diastolic volume in young children with congenital heart disease, showing good agreement with CMR.
Supports echo bullet method for LVEDV estimation in pediatric CHD; extends validation data but leaves open need for prospective trials.
INTRODUCTION: 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). METHODS: 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. RESULTS: 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). CONCLUSIONS: Subxiphoid echocardiographic bullet method of measuring LVEDV shows a good agreement with CMR obtained LV size in young children.
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Nielsen et al. (2010) studied this question.
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