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Atrio-Hisian Fibers Anatomy and Electrophysiology

Authors


Address for reprints: Claude J. Brechenmacher, M.D., Histology Lab., 6 rue de la Belette, 67205 Oberhausbergen, France. Fax: 00-33-3-88-59-46-98; e-mail: Claudette.brechenmacher@orange.fr

Abstract

Introduction

In this case, electrophysiology and histology could be studied in the same heart. Clinical investigation, clinical electrophysiology, and postmortem serial histological sections of the septum were analyzed.

Methods

A patient with repeated seizures and a short PR interval with narrow QRS complex underwent electrophysiologic studies.

Results

The patient died while experiencing a very rapid supraventricular tachycardia and histologic examination showed a atrio-hisian bypass tract.

Conclusion

In our study, the lack of lengthening of the PR interval in spite of progressively premature atrial stimulation connected with the presence of atrio-hisian bypass tract.

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