The immediate effects of the intravenous administration of neoarsphenamine on the electrocardiogram in cases of syphilitic aortitis

Abstract In an electrocardiographic study of twenty-two patients suffering from syphilitic aortitis with aortic insufficiency, it was found that significant and marked changes in the ventricular complex of the electrocardiogram occurred in two cases, and minor alterations in five cases, within a few hours after the administration of neoarsphenamine. The possible significance of these observations is discussed.