摘要Atrial fibrillation (AF) is the most common arrhythmia in the elderly and its incidence increases with aging.[1] Electrical cardioversion is used as a strategy for rhythm control in patients with supraventricular arrhythmias.In octagenarians,there are challenges associated with the indication for electrical cardioversion,such as the use of appropriate sedation and anticoagulant agents.Most decisions in clinical practice for these patients derive from observational data and personal experience,since octagenarians represent a minority of patients included in randomized clinical trials.Little evidence is available regarding the clinical context of electrical cardioversion in this vulnerable population.Therefore,we aimed to describe the clinical profile of octagenarians undergoing electrical cardioversion in a cardiology reference center from 2014 to 2018.