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The Journal of Thoracic and Cardiovascular Surgery, Vol 99, 234-239, Copyright © 1990 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Surgical management of Wolff-Parkinson-White syndrome in infants and small children

FA Crawford Jr, PC Gillette, V Zeigler, C Case and M Stroud
Division of Cardiothoracic Surgery, South Carolina Children's Heart Center, Medical University of South Carolina, Charleston 29425.

Surgical ablation of accessory conduction pathways has rarely been reported in infants and small children with Wolff-Parkinson-White syndrome. In the interval January 1985 to September 1988, 19 infants and children aged 5 or younger have undergone surgical ablation of accessory conduction pathways because of recurrent supraventricular tachycardia. There were 12 (63%) boys and seven (37%) girls. Age ranged from 4 to 66 months (mean 33.8 months). Nine infants were less than 24 months old. Weight ranged from 5.5 to 2.16 kg (mean 13.2 kg). All 19 patients had symptoms, with duration of symptoms ranging from 3 to 63 months (mean 21 months). Accessory conduction pathways were classified preoperatively as left free wall in four (21%), right free wall in nine (47%), and posterior septal in six (32%). No multiple pathways were recognized preoperatively. Left ventricular function was abnormal in four (21%) preoperatively. Free wall pathways (n = 13) were surgically dissected and septal pathways (n = 6) were cryoablated at -70 degrees C. Mean cardiopulmonary bypass time was 60 +/- 4 minutes. Mean crossclamp time was 42 +/- 2 minutes in those undergoing surgical dissection. Mean postoperative stay was 6.4 +/- 0.2 days. There were no deaths, no significant postoperative complications, and no instance of complete heart block. All patients were considered cured at the time of discharge. At a mean follow-up of 12.7 months, 18 (94.7%) remain cured. One patient with Ebstein's anomaly and a right free wall pathway had a recurrent supraventricular tachycardia 3 months postoperatively, and repeat electrophysiologic study has shown a previously unsuspected anterior septal pathway. Ventricular function returned to normal in all four patients who had abnormal function preoperatively. Surgical ablation of accessory conduction pathways can be safely done in infants and small children with results equal to those obtained in adults.

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