Risk factors of new-onset atrial fibrillation during recovery period of acute myocardial infarction

AIM To explore the risk factors of new onset atrial fibrillation (AF) during the recovery period (>28 days) of acute myocardial infarction (AMI). METHODS Clinical data of 212 AMI patients during 1 year after admission were retrospectively analyzed, including the general conditions, test results, treatment and follow-up data. Patients were admitted to hospital for AMI from June 2009 to June 2011. Logistic regression analysis was conducted to analyze the risk factors of new-onset AF after hospital discharge. RESULTS Logistic regression analysis showed that age >75 years (P<0.05, OR=5.61), hypertension (P<0.05, OR=5.89), LVEF<50% (P<0.01, OR=6.3), non-emergency PCI (P<0.01, OR=6.01), diabetes mellitus (P<0.05, OR=3.59) and β-blocker intolerance (P<0.01, OR=6.1) were associated with an increased risk of new-onset AF during the recovery period of myocardial infarction. CONCLUSION Age >75 years, hypertension, LVEF<50%, non-emergency PCI, diabetes mellitus and β-blocker intolerance are risk factors for new-onset AF during the recovery period of AMI.