Abstract
A 49-year-old woman experienced syncope 10 months after DDD pacemaker implantation for sick sinus syndrome. ECG revealed abnormal ST elevation in leads V1 to V3 during a paced rhythm. Multifocal premature ventricular contractions followed by ventricular fibrillation were documented. Saddleback-type ST elevation was confirmed after a mode change to AAI. The diagnosis of Brugada syndrome was made, and the DDD pacemaker was upgraded to an implantable cardioverter defibrillator. Brugada syndrome can be easily overlooked if the classic ECG findings are not initially noted but may be observed even during pacing therapy.
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