[An experience of anesthesia in a case of WPW syndrome].

WPW (Wolff-Parkinson-White) syndrome is a rare disease characterized by electro-cardiographic anomalies associated with a history of recurrent supraventricular tachycardia. ECG abnormalities consist of a short PR interval and a broad QSR complex with a slurred upstroke. We experienced general anesthesia in a 29-year-old male with this syndrome for operation of maxillary cyst. Physical laboratory examinations of this patient revealed his conditions of within normal limits with the exception of ECG findings. After premedication with atropine, hydroxyzine and pethilorfan intramuscularly one hour prior to anesthesia, anesthesia was induced with intravenous thiopental 325 mg and the trachea was intubated with intravenous succinylcholine 40 mg. Thereafter anesthesia was maintained with 2.0% enflurane and 67% nitroxide in oxygen under controlled ventilation. During 1 hour operation, vital signs remained stable and paroxysmal tachycardia was not recognized on the ECG. The postoperative course was uneventful.