Key result
Distance-corrected precordial voltage (D2[SV1 + RV5]) showed improved correlation with left ventricular muscle volume compared to uncorrected voltage in males (r=0.712) and females (r=0.469).
Why the study?
Does distance-corrected precordial electrocardiographic voltage improve correlation with left ventricular muscle volume in children compared to uncorrected voltage?
Cross-Sectional (n=476)
Does distance-corrected precordial electrocardiographic voltage improve correlation with left ventricular muscle volume in children compared to uncorrected voltage?
Effect estimate: r = 0.712 (males), r = 0.469 (females)
Correcting precordial ECG voltage for the distance from the chest wall to the left ventricle improves its correlation with echocardiographically determined left ventricular muscle volume in children.
May support distance-corrected voltage for pediatric LV mass estimation; hypothesis-generating and should not yet change practice.
The left ventricular muscle volume (LVMV) and the distance from the anterior chest wall to the middle of the left ventricle (D) were determined echocardiographically in 476 children as a part of the Shimane Heart Study. Correlation of the summed precordial voltage (SV1 + RV5) with LVMV was not good (r = 0.377 in males and -0.095 in females). The precordial voltage (SV1 + RV5), therefore, was corrected by the square of D to compensate the diminution of electrical potential by distance. Correlation between D2 (SV1 + RV5) and LVMV was good in males (r = 0.712) and relatively good in females (r = 0.469). Moreover, the values of D2 (SV1 + RV5) were different between both sexes at the age of 12--16 years. The thickness of subcutaneous fat may be one of the most important factors for these differences in D2 (SV1 + RV5) and correlation coefficient.
No takes yet. Share an insight, caveat, or question.
Mori et al. (1980) conducted a cross-sectional in Pediatric electrocardiogram evaluation (n=476). Distance-corrected precordial voltage (D2[SV1 + RV5]) vs. Uncorrected precordial voltage (SV1 + RV5) was evaluated on Correlation with echocardiographically determined left ventricular muscle volume (LVMV) (r = 0.712 (males), r = 0.469 (females)). Distance-corrected precordial voltage (D2[SV1 + RV5]) showed improved correlation with left ventricular muscle volume compared to uncorrected voltage in males (r=0.712) and females (r=0.469).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: