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Serial change of ECG with age in case 1. A: ECG obtained at 1 month of age. Normal sinus rhythm with right axis deviation and possible RBBB pattern are observed. B: ECG at 4 months of age. Significant QRS widening in right precordial leads with saddle back ST elevation in the V3 lead is observed (arrow). C: ECG at 6 months. Definitive ST elevation with T wave inversion of Brugada type 1 pattern is observed (arrows). ECG: electrocardiogram, RBBB: right bundle branch block.
