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Ann Thorac Surg 1992;54:306-310
© 1992 The Society of Thoracic Surgeons
a Department of Surgery, Mercer University School of Medicine and Medical Center of Central Georgia, Macon, Georgia, USA
b Cardiac Electrophysiology and Cardiovascular Surgery Services, St. Joseph Hospital, Atlanta, Georgia USA
Accepted for publication January 13, 1992.
* Address reprint requests to Dr Sealy, Department of Surgery, Medical Center of Central Georgia, 777 Hemlock St, Box 140, Macon, GA 31208.
Two patients are described with antidromic reentry tachycardia successfully treated by interruption of an anterior septal accessory atrioventricular node and bundle. This anomalous connection resembles an atrioventricular conduction sling seen in complex congenital heart malformations. It has atrioventricular node-like properties, is located in the anterior septal area, will only conduct antegrade, and has an insulated connection to the right bundle branch. Rather than nodoventricular, nodofascicular, atriofascicular, or Mahaim, a more appropriate label for the connection is accessory atrioventricular node and bundle.
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