The electrocardiogram in normal children and in children with right ventricular hypertrophy.

The need for accurate diagnosis in congenital heart disease has greatly increased the importance of the various types of electrocardiogram found in right ventricular hypertrophy. This is particularly important in children in whom the normal patterns may closely simulate those of right ventricular hypertrophy. Recently the appearances in infants and children have been analysed by Switzer and Besoan (1950) and by Schaffer (1950). The electrocardiogram of right ventricular hypertrophy has been extensively studied by Wilson et al. (1947), by Myers et al. (1948, 1950), by Goldberger (1944), by Sokolow and Lyon (1949) and by Sokolow and Edgar (1950). Sokolow and Lyon included 24 children of five years of age or less in a series of 60 patients with right ventricular hypertrophy.