Accelerated Idioventricular Rhythm Unmasking the Brugada Electrocardiographic Pattern
It has recently been reported that a high‐degree right bundle branch block (RBBB) may conceal the electrocardiographic manifestations of the Brugada ECG pattern. An 82‐year‐old with recent onset palpitations was seen in clinic. The resting ECG showed sinus rhythm, high‐degree RBBB, and an irregular idioventricular rhythm. Some fusion beats between sinus rhythm and idioventricular rhythm occurred spontaneously depicting incomplete RBBB pattern and a clear cut elevation of the ST‐segment was unveiled, giving rise to a suspicious Brugada ECG pattern. The mechanisms and implications of these findings are discussed.
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