Published: 18 March 2021
Author(s): Vincenzo Russo, Angelo Silverio, Fernando Scudiero, Pierpaolo Di Micco, Marco Di Maio
Issue: May 2021
Section: Letter to the Editor

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a highly pathogenic human coronavirus recently recognized as the cause of the coronavirus disease 2019 (COVID-19). Italy is one of the hardest-hit countries by COVID-19, with more than 414,000 laboratory-confirmed cases by October 18, 2020 [1]. Atrial fibrillation (AF) represents a frequent comorbidity and may complicate the clinical course of COVID-19 patients during the hospitalization [2]. However, little is still known about the prognostic impact of pre-existent AF in patients with COVID-19.

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