Predictive value of fragmented QRS wave group in the clinical diagnosis and the severity of coronary artery disease in elderly patients with NSTEMI

Peng Yi; Chen Xiao-ling; Yang Xu

doi:10.3969/j.issn.1002-1949.2018.02.009

Abstract：Objective To explore the value of QRS wave group in the clinical diagnosis and the severity of coronary artery disease in elderly patients with non - ST - segment elevation myocardial infarction (NSTEMI). Methods A retrospective study, from February 2016 to February 2017 in our hospital 194 cases of elderly patients with NSTEMI treatment were studied according to the results of standard 12 lead electrocardiogram(ECG),the results were divided into fQRS positive group(n=112) and fQRS wave positive(n=82). To calculate the incidence and sensitivity and specificity of fQRS wave and pathological Q wave. The number of coronary lesions and the degree of coronary artery stenosis in two groups were analyzed. Results There was no significant difference in gender, smoking history,hypertension,hyperlipidemia,diabetes mellitus,TC and LDL between the two groups(P>0.05). The age difference between the two groups was significant (P<0.05), fQRS positive patients with coronary heart disease and Gensini score were significantly higher than those in the fQRS negative group (P<0.05). The broken QRS wave had a significantly higher incidence of pathologic Q wave incidence(P<0.05),the QRS wave breaking sensitivity was significantly higher than that of pathological Q wave(P<0.05),QRS wave breaking and pathological Q wave diagnostic specificity had no significant difference (P>0.05). FQRS positive patients with single vessel disease was significantly lower than fQRS negative group (P<0.05), but double and multi vessel disease rate of fQRS positive group was significantly higher than that in fQRS negative group(P<0.05) degree of fQRS wave in patients with coronary artery stenosis positive group was significantly higher than that of fQRS negative patients (P <0.05). The statistically significant univariate Logistic regression analysis showed that age, high Gensini score, coronary artery disease, coronary artery stenosis and coronary heart disease in elderly patients with NSTEMI ECG fQRS wave has positive correlation (P<0.05). Conclusion fQRS wave is sensitive to the diagnosis of elderly patients with NSTEMI,has a certain value in predicting the number and degree of coronary artery stenosis in patients with coronary artery disease,is a very effective index for the diagnosis of NSTEMI,has great value in clinical application.