心电图T波峰末间期及QT间期离散程度与冠心病严重程度相关性分析及其诊断价值

目的分析12导联心电图中T波峰末间期(Tp-Te)及QT间期离散程度(QTd)与冠心病严重程度的相关性及对冠心病的诊断价值。 方法回顾性分析50例健康体检者(健康组)及50例冠心病患者(冠心病组)的临床病例资料，对比两组Tp-Te、QTd差异，分析冠心病组Tp-Te、QTd与冠心病严重程度的相关性及对冠心病的诊断价值。 结果冠心病组Tp-Te及QTd均高于健康组，差异有统计学意义(P<0.05)。冠心病组Tp-Te、QTd与冠状动脉狭窄程度均呈显著的正向直线相关性，差异有统计学意义(P<0.05)。在冠心病的诊断中，Tp-Te及QTd均具有较高的灵敏性、特异性及准确性，且经分析，Tp-Te及QTd对冠心病均具有显著的诊断价值(P<0.05)。 结论Tp-Te及QTd与冠心病严重程度存在显著的正向相关性，且对于冠心病具有显著的诊断价值。

Correlation of the end period of T wave and QT dispersion degree in electrocardiogram with severity of coronary artery disease and its diagnostic value

ObjectiveTo analyze the 12-lead electrocardiogram T wave period (Tp-Te) and at the end of the period between QT dispersion degree (QTd) and the correlation between the severity of coronary heart disease (CHD) and the value of the diagnosis of coronary heart disease. MethodsA retrospective analysis was conducted in 50 cases of healthy physical examination and 50 patients with coronary heart disease, the clinical data were compared between the two groups, including Tp-Te, QTd difference, correlation between the severity of coronary heart disease (CHD), and value in the diagnosis of coronary heart disease. ResultsTp-Te and QTd in CHD group were higher than those in healthy group, with statistically significant difference (P<0.05). In CHD group, Tp-Te and QTd were positively correlated with degree of coronary artery stenosis(P<0.05). In the diagnosis of coronary heart disease, Tp-Te and QTd had a higher sensitivity, specificity and accuracy; the analysis of Tp-Te and QTd values played a significant role in the diagnosis of coronary heart disease (P<0.05). ConclusionTp-Te and QTd are significantly correlated with the severity of coronary artery disease, and therefore these have significant values in the diagnosis of coronary heart disease.