论文部分内容阅读
目的 探讨不稳定型心绞痛 (UA)患者心电图T波变化的临床意义。方法 分析2 0 3例冠状动脉造影阳性的UA患者 ,其心电图T波、ST段有异常改变 ,并分析其与临床危险分层及冠状动脉病变的关系。结果 心电图出现T波异常≥ 2个导联者 173例 ( 85 .2 %) ,而T波异常≥ 6个导联在多支病变组为 73 .9%,显著高于单支病变组 2 0 .5 %;显著T波倒置在UA高危组为65 .9%,明显多于低中危组 8.3 %;T波异常伴ST段压低在UA高危组为 80 .8%,明显多于低中危组 10 .2 %。T波异常的导联数同冠状动脉病变程度有明显相关性 (r =0 .874,P <0 .0 1)。结论 对UA患者T波异常进行定量分析将有助于病情评价及危险分层
Objective To investigate the clinical significance of ECG T wave changes in patients with unstable angina pectoris (UA). Methods Twenty-three UA patients with positive coronary angiography were analyzed with abnormal changes of T wave and ST segment of ECG, and their relationship with clinical risk stratification and coronary artery disease were analyzed. Results There were 173 (85.2%) T-wave abnormalities ≥2 leads in ECG and ≥6 leads were 73.9% in T-wave abnormality group, which was significantly higher than that in single-vessel lesion group .5%. The significant T wave inversion was 65.9% in the UA high risk group and 8.3% more than the low and medium risk group. The abnormal T wave depression was significantly higher in the UA group (80.8%) than in the low Dangerous group 10.2%. There was a significant correlation between the number of abnormal T wave and the degree of coronary artery lesion (r = 0.884, P <0.01). Conclusion The quantitative analysis of T wave abnormalities in patients with UA will be helpful for the evaluation of disease and risk stratification