QT离散度对高血压心肌肥厚并发心肌缺血的诊断价值  

THE DIAGNOSTIC VALUE OF QT DISPE RSION FOR PATIENTS WITH HYPERTENSIVE MYOCARDIAL HYPERTROPHY ASSOCIATED WITH MYO CARDIAL ISCHEMIA

作　　者：张永萍 金理云 孙兆家[3] 

机构地区：[1]烟台市莱阳中心医院心内科 [2]华金制衣有限公司保健科 [3]青岛大学医学院心内科

出　　处：《齐鲁医学杂志》2002年第4期326-327,共2页Medical Journal of Qilu

摘　　要：①目的　探讨QT离散度对高血压心肌肥厚并发心肌缺血的诊断价值。②方法　随机选取心脏超声诊断为左心室肥厚的高血压病人 67例 ,根据冠状动脉造影结果分为心肌肥厚并发心肌缺血组 (2 4例 )与单纯心肌肥厚组 (43例 ) ,对两组静态 1 2导联同步心电图测定的QT离散度值进行对比研究。③结果　心肌肥厚并发心肌缺血组的QT离散度均值较单纯心肌肥厚组明显延长 (t=3 .2 8,P <0 .0 1 )。以冠状动脉造影结果作对照 ,用QT离散度≥ 70ms作为心肌肥厚并发心肌缺血的诊断标准 ,灵敏度为 91 .7% ,特异度为 81 .8% .Objective\ To evaluate the diagnostic value o f QT dispersion for hypertensive myocardial hypertrophy complicating myocardial ischemia.\ Methods\ Sixty seven patients diagnosed with echocardiography as having left ventricular hypertrophy were randomly selected for this study. The patients were divided into myocardial hypertrophy with ischemia group (Group A, 24 cases) and simple myocardial hypertrophy group (Group B, 43 cases) based on c oronary angiography. QT dispersions were measured with 12 lead resting spatial ECG for all the patients.\ Results\ The mean value of QT dispersion was much higher for group A than that for group B ( t=3.28, P <0.01). QT dispersion of ≥70 ms had a se nsitivity of 91.7% and a specificity of 81.8% for prediction of myocardial hypertrophy with ischemia. \ Conclusion\ QT dispersion can be used as a reference parameter for the diagnosis of myocardial hypertrophy with ischemia. [

关 键 词：并发症 心电图 QT离散度 高血压 心肌肥厚 心肌缺血 诊断 

分 类 号：R540.41[医药卫生—心血管疾病] R544.1[医药卫生—内科学]