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Abstract: Sudden cardiac arrest of cardiac etiology is rare in children and adolescents and most often occurs with exertion. Conversely, syncope is a common pediatric emergency department complaint but rarely is associated with a serious underlying cardiac disorder. This report describes a case of the channelopathy Brugada syndrome (BrS) as a cause of sudden cardiac arrest in a febrile preadolescent child taking medications known to affect cardiac conduction. The patient received cardiopulmonary resuscitation and was successfully defibrillated. Initial electrocardiogram (ECG) demonstrated findings consistent with BrS. Confirmatory electrophysiologic testing was performed, and an implantable cardiac defibrillator was placed. Pediatric emergency specialists must recognize both the importance of ECG in the workup of syncope and be familiar with the specific ECG findings suggestive of BrS. Ventricular arrhythmias that occur at rest should raise the suspicion of this genetic cardiac channelopathy, regardless of age., Competing Interests: Disclosure: The authors declare no conflict of interest., (Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved.)