Clinical Estimation of Left Ventricular Size : Precordial Electrocardiographic Voltage Corrected by the Measurement of Thorax : Proceedings of the 5th Conference on Prevention for Rheumatic Fever and Rheumatic Heart Disease

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The left ventricular muscle volume (LVMV) was determined echocardiographlcally and the radius of the circle with equal circumference to the thorax (R_1) was calculated from thorax-circumference in 688 children as a part of the Shimane Heart Study. Correlation of the summed precordial voltage (SV_1 + RV_5) with LVMV was not close (r= 0.377 in boys and -0.095 in girls). The. precordial voltage (SV_1 + RV_5) was corrected by the square of R_1 to compensate for the diminution of electrical potential by distance. Correlation between (R_1)^2 × (SV_1 + RV_5) and LVMV was good in boys (r= 0.681 ) and relatlvely good in girls (r = 0.554). This fact indicates that LVMV can be predicted from ECG and anthropometric measurements of thorax without using echocardiography. Therefore, (R_1)^2 × (SV_1 + RV_5) seems to have clinical applicability as the index of LV size, if the differences in (R_1)^2 × (SV_1 + RV_5) and in the correlation coefficient between both sexes are clarified further.
社団法人日本循環器学会の論文
1981-12-20