Research Of The Relationship Between ECG And Coronary Artery Disease In Non-ST-Segment Elevation Myocardial Infarction

Research BackgroundCardiovascular disease is the leading cause of death in humans,and coronary artery disease is the most common type.In recent years,non st-elevation myocardial infarction(non-ST-segment elevation myocardial infarction,NSTEMI)and a growing number of cases of the acute coronary artery syndrome(acute coronary syndrome,ACS)showed a trend of increase,the proportion of its dangerous illness,ecg changes not typical,prognosis is poorer,a serious threat to the patient’s life safety and health,has now become a hot issue in research of cardiovascular disease.To study the relationship between ecg and coronary artery disease in non-st-segment elevation myocardial infarction,timely and accurate assessment of coronary artery vascular condition is of great significance for the rational development of clinical treatment plan.ObjectiveComparative analysis of NSTEMI patients electrocardiogram(ECG)and coronary artery angiography(the CAG)results,the relationship between the relationship between electrocardiogram(ECG)and coronary artery lesions in patients with NSTEMI,provide the basis for clinical diagnosis and treatment of NSTEMI.MethodsSelect my hospital from February 2014 to October 2017 cases of acute non ST segment elevation myocardial infarction patients as the research object,were performed routine 18-lead electrocardiogram,blood biochemical examination,in the onset of 12 h or within 10~ 12 d adept coronary angiography.Record their gender,age,history of hypertension and diabetes,smoking history,history of dyslipidemia,such as general situation,according to the results of coronary angiography examination record single,double or three or more lesion blood vessel number and infarction related artery.Analysis of the relationship between electrocardiogram QRS duration,ecg ST segment,lead number of ecg ST segment,ecg T wave inversion and coronary angiography results were analyzed.。Observation of five aspects:Distribution of blood vessels in coronary angiography lesions,Perpetrator’s vascular stenosis;Analysis of the relationship between ST-segment depression and coronary angiography results;Analysis of the relationship between QRS duration and coronary angiography results;Analysis of the relationship between T wave and coronary angiography results 。 ResultsCase of vascular lesions:LCX was 62,23.50%;LAD was 118,44.70%;RCA was 76,28.80%;LM was 8,3.0%。Number of mild vascular stenosis was 6;Number of moderate vascular stenosis was 80;Number of vessels with severe stenosis was 106;Number of complete occlusion of coronary vesselswas 72。The group of QRS≥100ms,lesions of three or more vessels was more than QRS < 100 ms group(P< 0.05).ST segment down 1 mm or more groups of lesions of three or more vessels was more than ST segment down < 1 mm group(P< 0.05),number of lead < 6 groups of coronary angiography with t lesions of three or more vessels was less than the number six or more group(P< 0.05)。 There was no statistically significant difference among the non-t-wave inversion group,t-wave inversion in the groups of the depth less than or equal to 2mm,and t-wave inversion in the groups of the depth greater than or equal to 2 mm(P>0.05).ConclusionsNSTEMI patients electrocardiogram QRS acuity 100 ms,ST segment down 1 mm or greater,lead the number six or more prompt more coronary artery vascular lesions,severe myocardial ischemia and the three vascular lesions were more common.;The vascular occlusion of the NSTEMI was More commonin in LAD,and the LM was low incidence;Severe stenosis is common;There was nosignificant clinical significancee between the t-wave inversion and evaluation of coronary vascular lesions。...