The ORS vectorcardiogram in congenital heart disease during the first year of life

ABSTRACT

A new diagnostic vectorcardiogaphic technique was employed in the study of 21 patients with congenital heart disease under 1 year of age. The QRS vectrocardiograms were studied according to the position of the 0.02, 0.03., 0.04 and 0.05 second vectors and the rotation of the loop in the horizontal plane of the cube system of Grishman. Abnormalities in the location of these vectors and changes in the rotation of the loop including the appearance of figure of 8 loop during the first week of life were found useful in detecting ventricular hypertrophy in this age group. Criteria for the vectorcardiographic diagnosis of right ventricular hypertrophy and left ventricular hypertrophy were outlined for this method. Combined ventricular hypertrophy was diagnosed in 2 patients.(summary)