title: Paroxysmal atrial fibrillation triggered by a monomorphic ventricular couplet in a patient with acute coronary syndrome.
abstract: Atrial fibrillation is a common arrhythmia in patients suffering from acute myocardial infarction, however its pathophysiological mechanisms are not fully understood. We describe the unusual case of a 76-year old woman admitted for non-ST-segment elevation myocardial infarction, who developed multiple episodes of paroxysmal atrial fibrillation triggered by monomorphic ventricular couplets. Beta-blocking and amiodarone therapy resulted efficacious in preventing arrhythmic recurrences. We then discuss the possible arrhythmogenic mechanisms, with special emphasis on the unique electrophysiological, hemodynamic, cellular and anatomical milieu created by acute myocardial ischemia.
authors.affiliation: Department of Cardiology ARC, Azienda Ospedali Riuniti del Pordenonese, Pordenone, Italy.
authors.forename: Luca
authors.initials: L
authors.lastname: De Mattia
authors.forename: Marco
authors.initials: M
authors.lastname: Brieda
authors.forename: Ermanno
authors.initials: E
authors.lastname: Dametto
authors.forename: Federica
authors.initials: F
authors.lastname: Del Bianco
authors.forename: Gian Luigi
authors.initials: GL
authors.lastname: Nicolosi