食管心房调搏心脏负荷试验QT离散度对冠心病的诊断价值  

Diagnostic value of QT dispersion for coronary artery disease in transesopagus atrial pacing heart stress test

作　　者：王波[1] 王晓荣[1] 方松涛 

机构地区：[1]上海市中西医结合医院特检科,200082

出　　处：《蚌埠医学院学报》2004年第2期174-175,共2页Journal of Bengbu Medical College

摘　　要：目的 :研究QT离散度 (QTd)在食管心房调搏心脏负荷试验时是否随着心肌缺血的诱发而增大。方法 :分冠心病组和正常对照组 ,分别观察两组负荷试验前、负荷试验中最高心率时、负荷试验后即刻和 2min的QTd。结果 :冠心病组调搏最高心率时、调搏后即刻及 2min的QTd较调搏前显著增大 (P <0 .0 1 ) ,而对照组较调搏前无明显增大 (P >0 .0 5 )。结论 :食管心房调搏心脏负荷试验中QTd增加可以作为诊断冠心病心肌缺血的有效指标。Objective:To study whether the value of QT interval dispersion(QTd) increases along with precipitation of myocardial ischemia in transesophagus atrial pacing heart stress test.Methods:The QTd was measured in patients with coronary artery disease and normal subjects before stress test,during stress test,when the pacing heart rate achieved the maximum,the moment and two minutes after stress test.Results:QTd of the maximal pacing heart rate during stress test,the moment and two minutes after stress test increased significantly( P <0.01) compared with those before stress test in patients with cornary artery disease.QTd of the maximal pacing heart rate during stress test,the moment and two minutes after stress test did not increase significantly( P >0.05 ) compared with those before stress test in normal subjects.Conclusions:It suggests that increase of QTd might be used as an index to judge coronary artery disease in transesophagus atrial pacing heart stress test.

关 键 词：冠状动脉疾病 QT离散度 心肌缺血 食管心房调搏 负荷试验 

分 类 号：R541.4[医药卫生—心血管疾病]