Some experience in surgical management of the Wolff-Parkinson-White syndrome is generalized. Operations were performed on 7 patients (2 males and 5 females) whose ages ranged from 17 to 53 years. Endocardial electrophysiological examination and intraoperative mapping were the main diagnostic methods. In 5 patients the Wolff-Parkinson-White syndrome was combined with organic heart anomalies (atrial septal defect, mitral stenosis or incompetence) which were corrected with simultaneous removal of Kent's bundle. In 2 patients Kent's bundle was removed by epicardial electrodestruction and in 5 patients by Seely's operation. Signs of preexcitation and tachycardia disappeared subsequently in all patients who were operated on.
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