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Ann Thorac Surg 1977;23:215-220
© 1977 The Society of Thoracic Surgeons
Division of Cardiothoracic Surgery and Department of Pediatric Cardiology, University of Rochester Medical Center, Rochester, NY.
Accepted for publication July 2, 1976.
* Address reprint requests to Dr. Stewart, Division of Cardiothoracic Surgery, University of Rochester Medical Center, 601 Elmwood Ave, Rochester, NY 14642.
The specialized cardiac conduction tissue was identified quickly and easily at operation in 2 patients with corrected transposition (l-TGV) and 1 with Ebstein's anomaly. In each of the former cases the tissue was located along the upper rim of the VSD, beneath the pulmonary outflow tract; in neither patient was there a disturbance in cardiac rhythm as a result of operation. In the patient with Ebstein's anomaly the bundle of His descended onto the ventricular septum more directly than was anticipated. There was only a transitory disturbance in atrioventricular conduction following tricuspid valve replacement. Accurate identification of the cardiac conduction tissue is a prerequisite to the safe repair of certain forms of complex congenital heart disease.
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