Research Of The Relations Hip Between ECG And The Result Of Coronary Angiography In Non-ST-Segment Elevation Myocardial Infarction

Objective In recent years,with the extensive coronary angiography and acutecoronary syndrome (ACS) related diagnosis technology unceasing enhancement,nonST-elevation acute myocardial infarction (NSTEMI) in ACS and the proportion of alsogradually rise.Because of its dangerous illness,ecg changes than other types of ACS isnot typical,anti poor prognosis,a serious threat to people’s health and life.Now is adifficulty and a focus of cardiovascular research.this article aims to contrast withcoronary angiography,ECG features a retrospective study of acute non-ST segmentelevation myocardial infarction,NSTEMI discussed between the ECG and coronaryangiography relationship.For clinicians to further understanding of NSTEMI,early topredict the disease,interventions to provide a reference.Methods Select1January2012to31December2013at the LiaoningProvincial People’s Hospital for treatment of all acute coronary angiography non-STsegment elevation myocardial infarction132patients,73cases of male patients(55%),59female patients cases(45%).Aged43to87years, the average (63.42±12.37) years o fage.Of which71cases complicated by hypertension(53%),diabetes mellitus26cases(19%).Each patient are in the line of symptom onset standard12-lead electrocardiogram examination,all patients underwent emergency or undergoing electivecoronary angiography.Conducted a retrospective analysis of its surface ECG, referringto inclusion and exclusion criteria,according to QRS duration,number and extent ofECG ST-segment depression,T wave inversion cases of132patients were grouped asfollows:(1) According to the time of the electrocardiogram QRS patients were dividedinto2groups:QRS<100ms (I group); QRS≥100ms (II group);(2) two adjacent ECGleads in accordance with or without ST segment under shift into2groups:ST segmentdepression<1mm group (I group);ST segment depression≥1mm group (II group);(3)according to United derivative of ST segment depression patients were divided into2groups:guide United count<6(I group);leads several≥6(II group);(4) according to thedepth on the ECG T wave inversion patients were divided into3groups:no T-waveinversion group (I group);T wave inversion <2mm group (II group);T wave inversion≥2mm group (III group).Record the patient’s general condition,includinggender,age,history of diabetes,hypertension,smoking history,hyp-ercholesterolemiahistory.Double-vessel disease,the number of records in accordance with the results ofcoronary angiography in patients with single-vessel disease lesions+three left maindisease.Comparison of correspondence between the ECG and coronary angiographyresults.In this study, the measurement data are expressed as mean±standard deviation（ˉX±s）said that the measurement data betweenthe two groups were compared usingindependent sample test.The count data were compared using chi-square test,P<0.05was considered statistically significant. All data were processed using SPSS17.0software.Results (1)Age and diabetes mellitus of the QRS duration in patients wasstatistically significant.Other indicators on the QRS duration was not statisticallysignificant.QRS≥100ms age and the number of patients with diabetes was significantlyhigher than QRS<100ms groups.QRS≥100ms group of three coronary angiography andleft main disease was significantly higher than the number of QRS <100ms group (P＜0.05), between the two groups of single, no significant difference in the number of two- vessel disease;(2)History of diabetes in patients with ST segment depression was statisticallysignificant degree,no other clinical indicators of its statistical significance.≥1mm STsegment depression diabetes group was significantly higher than the number of STsegment depression<1mm groups.≥1mm ST segment depression group number threecoronary angiography and left main lesions were significantly higher than ST segmentdepression<1mm group (P<0.005), between the two groups of single, no significantdifference in the number of two-vessel disease;(3)Patients with a history of diabetes, the number of ST-segment depressionwas statistically significant, no other indicators of its statistical significance.≥6leadsseveral groups of diabetes was significantly higher than the number of the number ofleads<6groups.Number three leads several lesions≥6and the left main coronaryangiography group was significantly higher than the number of leads<6groups.Between the two groups of single,no significant difference in the number of two-vesseldisease;(4) Patients with a history of hypertension on the T-wave inversion wasstatistically significant,other indicators of the T wave inversion was not statisticallysignificant.No T-wave inversion group,T wave inversion<2mm group,T-wave inversion≥2mm were no significant differences between the three groups of coronary vasculardisease.Conclusion In NSTEMI patients, accompanied by ECG inverted and inverted Twaves for the evaluation of the depth of coronary artery disease was not significant;accompanied by ST segment depression≥1mm,QRS≥100ms and limit the number ofST-segment depression≥6were more multi-vessel coronary artery disease exists, thereis widespread and severe myocardial ischemia,a high degree of risk,poor prognosis.