Risk Factors Of New Atrial Fibrillation After Acute Myocardial Infarction And Their Effect On Prognosis

Objective:To investigate the risk factors of new atrial fibrillation after acute myocardial infarction and the effect of new atrial fibrillation after myocardial infarction on the prognosis of patients.Methods:Retrospective analysis in January 2017 to December 2017 patients with acute myocardial infarction,and to collect the general clinical data of patients with ejection fraction and left atrial diameter with interior diameter systolic left diastolic troponin I electrocardiogram and so on comparison of ST-segment elevation myocardial infarction patients with non ST-segment elevation myocardial infarction,the incidence of atrial fibrillation in patients with whether there is a difference.Risk factors of new atrial fibrillation after acute myocardial infarction were analyzed by logistic regression to investigate the prognostic effect of new atrial fibrillation after hospitalization after acute myocardial infarction.Results:A total of 473 patients were enrolled,including 269 patients with ST-segment elevation myocardial infarction and 26(9.70%)patients with new atrial fibrillation.204 cases of patientswith Non ST-segment elevation myocardial infarction,and 28(13.66%)patients with new atrial fibrillation.There was no difference between ST-elevation myocardial infarction and non ST-segment elevation myocardial infarction in the incidence of AF.(chi-square=1.798,P=0.180).Using logistic regression analysis found that age,heart function grading,hospital heart diastolic,weight,index of left atrial diameter,men isnew independent risk factor for atrial fibrillation after acute myocardial infarction.The mortality rate of heart failure after myocardial infarction was higher in the in-hospital atrial fibrillation group than that of the non-atrial fibrillation group.After 1 year follow-up,the mortality rate of thrombus,bleeding rate,heart failure rate,recurrent angina pectoris and recurrent myocardial infarction in patients with AF were all higher than those without AF.Conclusions:There was no difference in the incidence of new atrial fibrillation between ST-segment elevation myocardial infarction and non-ST-segment elevation myocardial infarction.Heart rate,diastolic blood pressure,body mass index,left atrial diameter in men with age-graded cardiac function were independent risk factors for new atrial fibrillation after myocardial infarction.Patients with new atrial fibrillation after myocardial infarction have poor prognosis.