Abstract
Aim: There is limited data on clinical outcomes of delayed cardioversion (DCV) compared with early cardioversion (ECV) in paroxysmal atrial fibrillation (AF) patients. Methods: We utilized data from National Inpatient Sample (2015-2020) and propensity-score matched analysis to determine adjusted odds ratio (aOR) of major clinical outcomes, including 17,879 AF cases: 9725 and 8154 underwent ECV and DCV, respectively. Results: Compared with ECV, DCV was associated with higher odds of acute heart failure (AHF; aOR 1.79 [1.67-1.92]; p<0.01), median length of stay (4 vs 2days; p<0.01) and cost of hospitalization ($33,410 vs $21,738; p<0.01) with no significant difference in inpatient mortality and other cardiovascular and neurological outcomes. Conclusion: Compared with ECV, DCV was associated with more AHF and resource utilization.
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