Application of echocardiography in screening for atrial fibrillation in elderly diabetic patients

LI Junpeng; LYU Jingqiao; YANG Gaole; XIE Na; SUN Yongkun

Abstract：Objective To observe the value of echocardiography in screening for atrial fibrillation in elderly diabetic pa-tients.Methods Two hundred twenty-eight elderly patients with diabetes admitted to our hospital were divided into atrial fibril-lation group and non-atrial fibrillation group according to whether they were complicated with atrial fibrillation.The general data and echocardiographic parameters were compared between the two groups.Logistic regression model was used to analyze the in-fluencing factors of atrial fibrillation in elderly diabetic patients.Receiver operating characteristic curve(ROC)was drawn to analyze the diagnostic value of echocardiographic parameters for atrial fibrillation in elderly diabetic patients.Results The inci-dence of atrial fibrillation in 228 patients was 22.37%.Left atrial diameter(LAD),left atrial volume(LAV),left atrial volume index(LAVI),and the ratio of peak velocity of early diastolic filling to peak velocity of late diastolic filling across the mitral valve(E/A)ratios in atrial fibrillation group were higher than those in non-atrial fibrillation group,left ventricular ejection frac-tion(LVEF)was lower than that in non-atrial fibrillation group(P<0.05).Logistic regression model analysis showed that age,hemoglobin Alc(HbAlc),LAD,LVEF,and E/A ratio were influencing factors of atrial fibrillation in elderly diabetic patients(P<0.05).ROC curve showed that the combination of LAD,LVEF,and E/A ratio had higher sensitivity than single diagnosis for atrial fibrillation in elderly diabetic patients,and the area under the curve(AUC)was also higher than single diagnosis(Z=3.165,P=0.002,Z=2.872,P=0.004,Z=3.385,P<0.001),and the specificity was similar to single diagnosis.Conclusion Age,HbAlc,and echocardiographic parameters LAD,LVEF,and E/A ratio are influencing factors of atrial fibrillation in el-derly diabetic patients,and the combination of LAD,LVEF,and E/A ratio has high diagnostic value for atrial fibrillation.