An unexpected ECG finding

without ST elevation and no signs of Brugada. Considering this short period of time to normalisation, there is a strong possibility that high potassium levels are provoking this Brugada pattern, as has been described before [1, 2]. Subsequently, Brugada syndrome was confirmed by positive ajmaline provocation testing. Shortly after administration of ajmaline the exact same type of Brugada was reproduced (with alternative placement of leads V3 and V5 to the intercostal space above V1 and V2, respectively; Fig. 3). This drug-induced Brugada syndrome is considered to be a type with a low risk of acute cardiac death [3]. However, in general it is recommended to prevent fever and if fever occurs to perform an ECG for potential rhythm monitoring, and to avoid certain drugs with the potential to prolong the QT interval.