title: Accelerated idioventricular rhythm unmasking the brugada electrocardiographic pattern.
abstract: 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.
authors.affiliation: Division of Cardiology, Hospital Ramos Mejia, Buenos Aires, Argentina.
authors.forename: Marcelo V
authors.initials: MV
authors.lastname: Elizari
authors.forename: Diego
authors.initials: D
authors.lastname: Conde
authors.forename: Adrian
authors.initials: A
authors.lastname: Baranchuk
authors.forename: Pablo A
authors.initials: PA
authors.lastname: Chiale
mesh_terms: D016170:Accelerated Idioventricular Rhythm / Q000503:physiopathology*; D000369:Aged, 80 and over; D000889:Anti-Arrhythmia Agents; D053840:Brugada Syndrome / Q000503:physiopathology*; D004562:Electrocardiography; D006801:Humans; D008297:Male
chemical_list: D000889:Anti-Arrhythmia Agents
keywords: Brugada ECG pattern; accelerated idioventricular rhythm