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Amiodarone is associated with increased short-term mortality in elderly atrial fibrillation patients with preserved ejection fraction

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Journal of Interventional Cardiac Electrophysiology Aims and scope Submit manuscript

Abstract

Purpose

Amiodarone is commonly used in atrial fibrillation (AF). Long-term use of amiodarone is associated with significant toxicities especially in elderly patients. However, in the short term after hospitalization of AF, it remains uncertain whether the use of amiodarone will increase mortality. We aim to investigate whether Amiodarone affects short-term mortality in elderly patients after hospitalization for atrial fibrillation.

Methods

We conducted a single-center retrospective cohort study including patients (Age > = 60 years old) who were hospitalized between 07/01/2004 and 06/30/2019 with primary diagnosis of AF and left ventricular ejection fraction (LVEF) > = 50%. Patients who were prescribed amiodarone during hospitalization but not before hospitalization are classified into Amiodarone group (341 patients). Patients who were not prescribed amiodarone are classified into non-amiodarone group (2171 patients). Propensity score matching was performed with 1:1 nearest-neighbor matching of Amiodarone group and Non-amiodarone group based on baseline variables. Univariate and Multivariate logistic regression were used to calculate the odds ratio of amiodarone use on in-hospital mortality, and multivariate cox regression was adopted to calculate the hazard ratio of amiodarone use on 100-day mortality.

Results

Patients’ baseline demographic and clinical characteristics were well matched in both groups. Both univariate and multivariate logistic regression showed amiodarone group had higher in-hospital mortality (OR 10.27, p = 0.0268; 16.50, p = 0.0171) than non-amiodarone group and multivariate Cox regression suggested increased 100-day all-cause mortality (HR 2.34, p = 0.022).

Conclusion

Amiodarone use in elderly patients with preserved ejection fraction is associated with increased in-hospital and 100-day all-cause mortality after hospitalization for AF.

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Data availability

Available upon request once approved by Institutional Review Board for data sharing.

Code availability

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Correspondence to Weijia Li.

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Approved by Institutional Review Board of Albert Einstein College of Medicine.

Informed consent

Informed consent was waived based on retrospective nature of the study with minimal risk.

Conflict of interest

Dr. Di Biase is a consultant for Biosense Webster, Boston Scientific, and St. Jude Medical and has received speaker honoraria/travel from Medtronic, Atricure, EPiEP, and Biotronik. The remaining authors report no conflict of interest.

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Li, W., Wang, YC., Tiwari, N. et al. Amiodarone is associated with increased short-term mortality in elderly atrial fibrillation patients with preserved ejection fraction. J Interv Card Electrophysiol 63, 207–214 (2022). https://doi.org/10.1007/s10840-021-00970-8

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  • DOI: https://doi.org/10.1007/s10840-021-00970-8

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