ST段水平延长对冠心病的诊断价值探讨

Diagnostic value of plane ST segment delay to coronary heart disease

为探讨ST段水平延长≥0.12s对冠心病的诊断价值,对冠心病组(n=56)与对照组(n=39)的心电图进行对比分析。结果显示两组ST段水平延长>0.12s阳性率间差异有非常显著意义(P<0.01),ST段水平延长诊断冠心病的敏感度为78.6％,特异度为89.7％,准确度为83.2％,阳性预测值为91.7％;同时冠心病组18例有对称直立T波的心向量图均有原发性T环异常改变。提示ST段水平延长≥0.12s对冠心病有较高的诊断价值,如同时伴T波改变将进一步提高诊断准确性。

For purpose of exploring diagnostic value of plane ST segment delay( ≥0.12s) to coronary heart disease (CHD), author analyzed ECG maps of CHI) group(n - 56) and those of controls(n = 39). Results of this study demonstrated significant difference between two groups(P <0.0l).Its sensitivity was 78.6%, specificity 89.7%, accuracy 83.2%and positive prognostication 91.7% ;in CHD group, primary T cycle abnormal in vectorcardiogram found in 18 cases was compared with symmetrical and upright T wave simultaneously. Conclusion: plane ST segment delay ≥0.12s was very valuble in diagnosis of CHD and accuracy would be more confident with simultaneous T wave changes.