Objective
In the present study, we aimed to compare in-hospital mortality and safety of intravenous beta-blockers and amiodarone in septic patients with new-onset atrial fibrillation (NOAF). The null hypothesis is that there is no significant difference in in-hospital mortality and safety of Beta-blocker (BBs) and amiodarone in treating NOAF in patients with sepsis.
Design
We conducted a retrospective analysis based on the MIMIC-IV database. Septic patients with NOAF were screened.
Setting
Patients admitted to adult mixed ICU for septic patients with NOAF.
Patients
A total of 34,789 patients were screened of whom 1394 patients were included for the analysis: 286 in the amiodarone group and 1108 in the BBs group.
Interventions
None.
Main variables of interest
Cox proportional hazard model was used to examine the in-hospital mortality, ventilator-free days and duration of atrial fibrillation in patients receiving either amiodarone or intravenous BBs. Propensity score matching was applied to determine any association.
Results
After Propensity Score (PS) matching, a total of 244 patients were included in both the BB and amiodarone groups. In this cohort, BBs was significantly associated with lower in-hospital mortality [adjusted hazard ratio (HR) of 0.70 (95% CI 0,54–0,91; P = 0.008)]. On the other hand, patients who received amiodarone had a shorter duration of atrial fibrillation (54.17 h vs 72.81 h; P = 0.003). There was no significant difference in ventilator-free days between the BB group and the amiodarone group.
Conclusion
In septic patients with NOAF, patients receiving BBs had lower in-hospital mortality than those who received amiodarone. On the other hand, amiodarone group had a shorter duration of atrial fibrillation. There was no significant difference in ventilator-free days between the BB group and the amiodarone group.
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