Application of ECG fragmentation QRS wave in the diagnosis of acute myocardial infarction

Objective To investigate the clinical value of fragmentation of QRS wave in the diagnosis of acute myocardial infarction. Methods A total of 83 patients with acute myocardial infarction diagnosed by coronary angiography in the First People's Hospital of Jiande were selected in the research (observation group), including 41 patients with acute ST elevation myocardial infarction(observation group A), 42 patients with non-ST elevation acute myocardial infarction(observation group B). And 80 healthy subjects were selected as control group.The changes of fragmented QRS wave were compared among three groups, the efficacy of fragmented QRS wave in the diagnosis of acute myocardial infarction were observed. Results The incidence rate of fragmented QRS wave in the observation group was 71.1%, which was significantly higher than 10.0% in the control group, the difference was statistically significant(χ2=12.541, P 0.05). Conclusion The fragmentation of QRS wave in the diagnosis of acute myocardial infarction has high application value, but also can not ignore the pathological Q wave function, the index can be used to diagnose the disease combined with clinical practice, help to improve the accuracy of diagnosis. Key words: Electrocardiography; QRS wave; Myocardial infarction; Diagnosis