[Disorders of atrioventricular conduction in Ebstein's anomaly in an adult. A report of 5 cases].

From the literature we find that the most frequent electrical alterations in Ebstein's anomaly are: the abnormal right atriogram; ventricular pre-excitation; supraventricular tachycardia; right bundle branch block and lengthening of the PR tract. These alterations are also present in cases of Ebstein's anomaly diagnosed in adults. The study of the activation of the right ventricle, which offers a variety of forms of development, is a source of particular interest. We report five cases which have come to our attention, in which greater disturbances of the atrioventricular block were present. This aspect has not yet been clearly reported in the literature.