[Intraoperative ventricular or supraventricular tachycardia? A case report].

A 68-year-old man with a history of paroxysmal supraventricular tachycardia developed wide QRS complex tachycardia one minute after induction of general anesthesia. As the wide QRS complex tachycardia appeared to be ventricular and pulsation of the radial artery could not be felt, intravenous antiarrhythmic drugs were given. Surgery was postponed. Postoperative electrophysiological study revealed ectopic atrial tachycardia. Catheter abration was performed. Regular P waves were noticed by precise review of the intraoperative electrocardiogram. The intraoperative tachycardia was thought to be supraventricular in origin.