Atrial arrhythmias in Takotsubo cardiomyopathy: incidence, predictive factors, and prognosis.

Abstract

Aims: Takotsubo cardiomyopathy (TTC) is a stress-related transient cardiomyopathy. It is unclear whether TTC is associated with poorer prognosis when atrial arrhythmia (AA), atrial fibrillation or flutter, occurs. The purpose of this study was to assess the incidence of AA in patients with TTC, predictive factors of AA, and its association with mortality. Methods and results: We studied 214 consecutive cases of TTC over 8 years. The study cohort was divided into two groups-those with newly diagnosed AA (AA-group) and those without (non-AA group). AA occurred in 24.8% of the patients. The AA group presented with lower left ventricular ejection fraction (LVEF) on admission and higher cardiac a..