The electrocardiogram in pulmonary stenosis with intact septa

The electrocardiograms of 100 patients with pure pulmonary stenosis studied by right heart catheterization were reviewed. For analysis, the subjects were grouped according to the systolic pressure in the right ventricle. The majority of patients showed evidence of right ventricular hypertrophy, the frequency increasing with the severity of the stenosis. No diagnostic pattern was established. The severity of the stenosis and the height of systolic pressure in the right ventricle cannot be gauged in the individual patient by the character of the tracing.