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Early rhythm control and the risks of ischaemic stroke, heart failure, mortality and adverse events when performed early (<3 months).

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BACKGROUND In EAST-AFNET 4 trial, early rhythm control was associated with better clinical outcomes for patients with atrial fibrillation (AF). However, whether the better outcomes of patients assigned to rhythm… Click to show full abstract

BACKGROUND In EAST-AFNET 4 trial, early rhythm control was associated with better clinical outcomes for patients with atrial fibrillation (AF). However, whether the better outcomes of patients assigned to rhythm control were solely due to "early" intervention or because of more regular and structured follow up was unclear. OBJECTIVE To investigate whether the findings of EAST trial are applicable to the 'real world' clinical setting, where a less structured management protocol is operated. METHODS From 2001 to 2016, 301,064 newly-diagnosed AF patients were identified from Taiwan National Health Insurance Research Database. Among these patients, 62,649 AF patients receiving antiarrhythmic drugs or catheter ablation within 1 year after AF being diagnosed were categorized as the early rhythm control group, and the remaining 238,415 patients were defined as usual care group. Risk of clinical events were compared. RESULTS Compared to usual care, early rhythm control was associated with a lower adjusted risk of ischemic stroke(aHR 0.771; p<0.001), heart failure(aHR 0.851; p<0.001), acute myocardial infarction(aHR 0.915; p<0.001), mortality(aHR 0.794; p<0.001) and composite adverse events(aHR 0.823; p<0.001). Compared to usual care, the lower risks of ischemic stroke(aHR 0.746), heart failure(aHR 0.819), mortality(aHR 0.777) and composite adverse events(aHR 0.802) associated with early rhythm control were even more evident when performed early (<3months)(pint<0.001). Principal results were generally consistent for majority of subgroups studied and among the cohort after propensity matching. CONCLUSIONS Early rhythm control, especially when performed earlier (<3months), was associated with a lower risk of adverse events than usual care among patients with early AF.

Keywords: heart failure; rhythm control; control; early rhythm; adverse events

Journal Title: Thrombosis and haemostasis
Year Published: 2022

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