Abstract
Atrial fibrillation (AF) is the most common arrhythmia in the United States. Concomitant Covid-19 infection and the outcomes of AF are unknown. The study's goals were to analyze the outcomes of AF during the Covid-19 pandemic. We conducted a retrospective cohort study based on the 2020 National Inpatient Sample (NIS) of Adults (>18 years) hospitalized for AF as the primary admitting diagnosis based on the ICD-10 codes and stratified these groups into concomitant covid-19 infection vs. non-covid-19 infection. All-cause mortality was our primary outcome, while the rate of ICU admission, length of stay, hospital charges were our secondary outcomes. Temporal trends were assessed using logistic regression. In 2020, there were 1,994,985 admissions for atrial fibrillation, out of whom 104,495 (5.3%) had concomitant Covid-19. In the 104,495 AF admissions with covid-19, the mean age was 75y and 56.8% were males. Our results, image 1, showed AF with and without concomitant Covid-19 had similar rates of comorbid conditions including HTN, DM, OSA, CAD. HFrEF, and ESRD. AF patients with Covid-19 infection had a lower prevalence of smoking (31.83% vs. 39.4%, p<.001) and alcohol use (2% vs. 4.2%, p<.001). AF patients from both groups had similar rates of stroke (1.6% vs. 1.0%, p<.001). New AF patients with concomitant Covid-19 had worsening in-hospital outcomes such as shock (12.8% vs. 3.7%, p<.001), admission to the ICU (18.1% vs. 6.4%, p<0.001), higher all-cause mortality (21.8% vs. 3.9%, p<0.001), a longer length of stay (9.96 days vs 6.08 days, p<.001), and total hospital costs ($114,387 vs. $85,830, p<.0001). The incidence of AF catheter ablation on initial hospital admission for AF Covid-19 was lower compared to the AF non-covid-19 patients (.08% vs. 1.39%, p<.001). In 2020, Covid-19 infection was an independent predictor of higher all-cause mortality, length of stay, and costs in patients admitted for atrial fibrillation. In addition, these patients were less likely to get catheter ablation on hospital admission.
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