An electrocardiographic estimation of the left and right ventricular weight of the heart. Regression analysis based on the deviation from normal standards.
The deviation of the electrocardiographic deflections from normal standards and a grading of the ST segments were obtained from the ECGs of subjects who were subsequently examined by cardiac partitioning at autopsy. A stepwise, multiple, linear regression analysis was calculated, where the ventricular weights were the determinate variables, and the electrocardiographic deviation from normal standards, the grading of the ST segments, age and weight were the indeterminate variables. The results for the entire series of cases and subgroups were statistically significant at P less than 0,001. The wide spectrum of left and right ventricular weights required the establishment os subgroups, in which the variation in ventricular weight explained by the indeterminate variables was of a high order. The results were similar to estimations based on the actual electrocardiographic measurements rather than on their deviation from normal standards.
D006332:Cardiomegaly / Q000473:pathology*; D004562:Electrocardiography; D006801:Humans; D009929:Organ Size; D012044:Regression Analysis