Electrocardiographic data recorded with Frank leads: In subjects without cardiac disease and those with left ventricular overload

Abstract

Amplitudes and durations of scalar deflections were measured in Frank lead electrocardiograms from 505 men without clinical evidence of cardiac disease. Amplitudes of the major QRS deflections and of T waves were significantly correlated with age; they were also correlated to a lesser degree with chest diameter and relative body weight. The results indicate that normal limits for some Frank lead electrocardiographic variables should be stratified by age. Discrimination between normal subjects and cases with left ventricular overload was not so good with selected Frank lead variables as with standard lead electrocardiographic criteria.