心肌缺血T环异常与Q-T离散度的关系

Relationship between abnormal T loop and Q-T dispersion in myocardial ischemia

为探讨心肌缺血患者心向量图T环改变与Q_T离散度的关系 ,观察100例心血管疾病患者心向量图T环异常指标及Q_T离散度。结果发现QRS_T夹角异常者60例Q_Td 为42.33±18.51ms,T环角度异常者64例Q_Td 为48.09±19.58ms,与正常组差异均有非常显著意义 (P<0.01) ,R/T比值异常、L/W比值异常者的Q_Td 与正常组差异无显著意义 (P>0.05) ,而T环形态异常者 ,特别是T环呈圆形或马蹄形改变时Q_T离散度非常明显增大 (P<0.01)。认为T环异常、Q_T离散度增大可作为诊断心肌缺血的心电学指标。

From investigating relationship between abnormal T loop and Q _ T dispersion(Q _ T d) in my ocardial ischemia and to analyse vectorcardiogram(VCG) in 100 patients with angiocardiopathy,it was found that there were 60 patients with abnormal angle between QRS loop and T loop(Q _ T d 42.33±18.51 ms) and 64 patients with abnormal angle of T loop (Q _ T d 48.09±19.58 ms).We found apparently more difference between abnormal group and normal one (P<0.01). But there was no striking difference between group Q _ T d of abnormal R/T or L/W and normal ones.However,Q _ T d is significantly increased in abnormal form of T loop,especially which seemed as circle or horse _ shoe (P<0.01).So abnormal T loop or increased Q _ T d could become index of electrocardiololgy on diagnosis of myocardial ischemia.