The electrocardiogram in Ebstein's anomaly of the tricuspid valve
1955; Elsevier BV; Volume: 50; Issue: 1 Linguagem: Inglês
10.1016/0002-8703(55)90250-7
ISSN1097-6744
AutoresB. van Lingen, S. Richard Bauersfeld,
Tópico(s)Congenital Heart Disease Studies
Resumo1. The electrocardiograms of eight cases of Ebstein's anomaly of the tricuspid valve have been studied. These were characterized by complete right bundle branch block in all cases, and by small deflections (R, R′, and R + S) in Leads V1 and commonly in Leads V2, V3, and V4. Tall and prolonged P waves occurred commonly and were considered to be evidence of right auricular hypertrophy and dilatation. Prolongation of the P-R interval and supraventricular tachycardia were also observed. 2. It was considered that the small deflections of the QRS complex in the right chest leads were due to the thinness of the proximal chamber of the right ventricle which is a characteristic and constant feature of Ebstein's disease. This feature of the electrocardiogram in Ebstein's anomaly is only rarely found in complete or incomplete right bundle branch block from other causes and is considered to be of value in the diagnosis of this condition. 3. The association of electrocardiographic evidence of right atrial hypertrophy in the absence of evidence of right ventricular hypertrophy (small R or R′ waves in the right chest leads) is uncommon in other types of congenital heart disease and is a characteristic feature of Ebstein's anomaly.
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