Heart Block and Atrioventricular Septal Defect

S. Y. Ho; M. B. Rossi; A. V. Mehta; A. Hegerty; S. Lennox; R. H. Anderson

doi:10.1055/s-2007-1014169

The Thoracic and Cardiovascular Surgeon, Table of Contents

Thorac Cardiovasc Surg 1985; 33(6): 362-365
DOI: 10.1055/s-2007-1014169

Case Report

Heart Block and Atrioventricular Septal Defect

S. Y. Ho¹ , M. B. Rossi¹ , A. V. Mehta³ , A. Hegerty¹ , S. Lennox² , R. H. Anderson¹

¹Department of Paediatrics, Cardiothoracic Institute*,
²Department of Surgery, Brompton Hospital, London, UK,
³Division of Cardiology, S. Christopher's Hospital for Children, Philadelphia, Pennsylvania, USA

*Dr. S.Y. Ho, Miss A. Hegerty, and Prof. R.H. Anderson are supported by the British Heart Foundation together with the Joseph Levy Foundation. Dr. M.B. Rossi is research fellow at the Department of Paediatrics, Cardiothoracic lnstitute from “Fundaçao Federal de Ciências Médicas de Porto Alegre” and is supported by “Coordenaçao Aperfeiçoamento de Pessoal de Nivel Superior”, Education and Culture Ministry of Brazil.

Abstract

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Summary

The cardiac conduction System was examined in 2 hearts which had repair of atrioventricular septal defect. The first was from a child known to have had a prolonged P-R interval and the second was from a girl who developed complete heart block before Submission to surgery. The atrioventricular conduction axis was histologically discontinuous in the first case, but preserved and surrounded by hemorrhage in the second case. This study draws attention to the inherent vulnerability of the cardiac conduction axis which must also be recognized before surgical intervention.

Key words

Atrioventricular septal defect - Heart block

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