四川医学2017，Vol.38Issue(7)：742-745,4.DOI:10.16252/j.cnki.issn1004-0501-2017.07.007
不同平面QRS-T夹角水平对陈旧性心肌梗死患者心功能不全的评估价值研究
Study on Evaluation of Cardiac Insufficiency in Patients with Old Myocardial Infarction by Different Planar QRS-T Angle
摘要
Abstract
Objective To study the value of different planar QRS-T angle in the evaluation of cardiac insufficiency in patients with old myocardial infarction.Methods Clinical data of 170 cases with old myocardial infarction,who visited cardiology department in our hospital during March 2009 and September 2015,were retrospectively analyzed.General clinical data,proportion of different QRS-T angle(proportion of QRS-T angle<50°,50°≤QRS-T angle<70°,70°≤QRS-T angle<90°,90°≤QRS-T angle<100° and QRS-T angle≥100°),WBC counts and CK-MB level of the two group of patients with different cardiac function were compared and the correlation between LVEF and QRS-T angle was analyzed.Results WBC counts and CK-MB level of cardiac insufficiency group were higher than normal cardiac function group,and there was difference in proportion of QRS-T angle<50°,90°≤QRS-T angle<100° and QRS-T angle≥100° between cardiac insufficiency group and normal cardiac function group,the difference being statistically significant(P<0.05),indicating that with the decrease of LVEF,the QRS-T angle increased and the planar QRS-T angle was negatively correlated to LVEF value.When LVEF<0.5,the correlation coefficient r=-0.467,P<0.05 and when LVEF<0.35,the correlation coefficient r=-0.489,P<0.05.Sensitivity and specificity of 90°≤QRS-T angle<100° were 95.32% and 94.02%,while sensitivity and specificity of QRS-T angle≥100° were 96.98 and 95.68%,which had statistically significant difference from WBC,CK-MB and other QRS-T angle(P<0.05).Conclusion Different planar QRS-T angles have certain clinical value for evaluating cardiac function,and the planar QRS-T angle is negatively correlated to LVEF value,which is defined as the lower LVEF value,the bigger planar QRS-T angle.When 90°≤QRS-T angle<100° and QRS-T angle≥100°,there are the highest sensitivity and specificity,the difference being not statistically significant between the two,so QRS-T angle≥90° can be used as an indicator for the evaluation of cardiac insufficiency in clinical practice.关键词
平面QRS-T夹角/陈旧性心肌梗死/心功能不全:评估价值Key words
planar QRS-T angle/old myocardial infarction/cardiac insufficiency/evaluation value分类
医药卫生引用本文复制引用
迪丽努尔·买买提伊明,都雯,高嵩..不同平面QRS-T夹角水平对陈旧性心肌梗死患者心功能不全的评估价值研究[J].四川医学,2017,38(7):742-745,4.基金项目
新疆乌鲁木齐市科学技术计划项目(编号:Y161310001) （编号:Y161310001）
