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Eur J Cardiothorac Surg 2000;18:487-490
© 2000 Elsevier Science NL

Surgical treatment of Wolf–Parkinson–White syndrome during plastic operations in patients with Ebstein's anomaly

Institute of Cardio-Vascular Surgery, UAMS, 11 Uzviz Protasiv Yar, 252110 Kyiv, Ukraine

Received 10 January 2000; received in revised form 12 April 2000; accepted 18 April 2000.

Corresponding author. Tel.: +380-44-277-4322; fax: +380-44-277-6422
e-mail: nastenko{at}akcecc.kiev.ua

Objective: Ebstein's anomaly is the most common pathology associated with the accessory conduction pathways. Methods: From January 1990 to August 1999 48 patients underwent surgical repair of Ebstein's anomaly by various plastic techniques. The pathways were identified and characterized at preoperative electrophysiologic mapping in 17 (34.5%) patients. There were seven males and ten females. The patients age ranged 6–35 years (mean 12.7±2.1 years). Five patients were in NYHA class II and were in 12 in NYHA class III. The cardiothoracic ratio ranged from 0.59 to 0.69 (mean 0.65±0.08). Tachycardia was present in 15 patients with Wolf–Parkinson–White (WPW) syndrome. Atrial septal defect was present in 12 patients (70.6%). Accessory conduction pathways were in the right posterior septal area in seven patients, in right posterior septal area and free wall in seven patients and in right free wall in three. The pathways were successfully ablated in all patients during cardiopulmonary bypass. Results: There were no deaths, no relapses. Follow-up ranged from 4 months to 7 years (mean 4.7±1.1 years). There were no late deaths, but one patient required successful tricuspid valve replacement because of severe tricuspid insufficiency. At follow-up 57.8% of patients were in NYHA class I. Conclusions: Preoperative electrophysiologic study allows to identify the accessory conduction pathways in patients with Ebstein's anomaly. The combined approach of tricuspid valve repair and surgical ablation of accessory atrioventricular connections has been proved safe and effective. This operative procedure allows to improve functional results in patients with Ebstein's malformation and concomitant accessory conduction pathways.

Key Words: Ebstein’s anomaly • Wolf–Parkinson–White syndrome • Plastic operations • Accessory pathways

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