A 61-year-old female patient with history of hipertension is scheduled to undergo a minor ginecological procedure (endoscopic endometrial polipus resection) with general anesthesia. She received standard monitorization, induction with midazolam, propofol and fentanyl. Ventilated with laringeal mask. Anesthesia was maintained with sevoflurane, nitrous oxide and oxygen. During surgical procedure, the patient received atropine and ephedrine associated with two episodes of bradycardia without hemodinamic disturbances. The surgery ended without problems. During the weaking up process she presented characteristical waves of ventricular fibrillation, recuperating sinusal rhythm secondary to defibrillation with 360 J. There was no clear cause for cardiac arrest at that moment so patient was translated to the ICU for observation, monitoring and study. Postoperative EKG presented an ascending ST segment in V to V derivations without hemodynamic alterations associated. The possible diagnosis of Brugada’s Syndrome was proposed. The patient received an implantable defibrillator. The mechanisms and anesthetic implications are discussed and reviewed.