Objective:To observe efficiency of fragmented QRS wave combined with pathological Q wave in diagnosis of acute myocardial infarction(AMI).Methods:A cross-sectional study was conducted on patients with coronary heart disease admitted to this hospital from January 2020 to December 2022.Electrocardiogram and Coronary angiography were performed.They were divided into AMI group(n=100)and non-AMI group(n=100)according to whether AMI occurred.Using the results of coronary angiography as the gold standard,the detection rates of fragmented QRS wave,pathological Q wave and fragmented QRS wave+pathological Q wave were compared between the two groups.The efficiencies of single and combined examination of fragmented QRS wave and pathological Q wave in the diagnosis of AMI were analyzed.The detection rate of fragmented QRS wave in different types of AMI was compared.Results:The detection rates of fragmented QRS wave,pathological Q wave and fragmented QRS wave+pathological Q wave in AMI group were higher than those in non-AMI group,and the differences were statistically significant(P<0.05).The sensitivity of combined examination of fragmented QRS wave and pathological Q wave in the diagnosis of AMI was higher than that of single examination,and the difference was statistically significant(P<0.05).The detection rate of fragmented QRS wave in ST-segment elevation AMI was higher than that in non-ST-segment elevation AMI,and the differences were statistically significant(P<0.05).Conclusions:The efficiency of fragmented QRS wave combined with pathological Q wave in the diagnosis of AMI is higher than that of single diagnosis.
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