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Ann Thorac Surg 1987;43:579-584
© 1987 The Society of Thoracic Surgeons

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Articles

Technical Considerations in the Surgical Approach to Multiple Accessory Pathways in the Wolff-Parkinson-White Syndrome

From the Sanger Clinic, the Heineman Foundation, and the Departments of Thoracic and Cardiovascular Surgery and Internal Medicine, Charlotte Memorial Hospital and Medical Center, Charlotte, NC

^* Address reprint requests to Dr. Selle, Heineman Medical Research Center, PO Box 35457, Charlotte, NC 28235

Surgical techniques for the approach to and division of atrioventricular accessory pathways have been designed and perfected during the past 18 years. The standard method of exposure of a single left free wall accessory pathway is by a left atriotomy. All other single accessory pathways are exposed through a right atriotomy.

Up to twenty percent of patients with Wolff-Parkinson-White (WPW) syndrome harbor multiple atrioventricular accessory pathways. In this subgroup, classic operative techniques, especially the methods of approach, must be combined or modified depending on the specific locations of the accessory pathways encountered.

Eighteen of 90 patients operated on for WPW syndrome at Charlotte Memorial Hospital from August, 1983, through September, 1986, had multiple accessory pathways. Thirty-eight of thirty-nine pathways were successfully divided. One posterior septal accessory pathway reappeared 2 months postoperatively and was catheter ablated.

The most frequent combination of atrioventricular accessory pathways included a right free wall and a posterior septal accessory pathway (10 patients). This combination is approached by a right atriotomy. The posterior septal space dissection is extended onto the right free wall area. Technically the most difficult combination includes a left free wall and a posterior septal accessory pathway (3 patients in the present series). Our preferred approach is begun with a right atriotomy for the posterior septal space dissection, followed by an atrial septotomy to expose the left free wall area. There are other methods, however, that may be advantageous depending on the exact locations of the accessory pathways encountered.

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