目的 通过无症状心肌缺血患者 动态心电图与冠状动脉CT血管造影的对比 分析，探究动态心电图在冠状动脉疾病的 诊断价值，为临床医生进一步决策提供参 考依据。方法 选取我院2017年6月至2018 年5月收治的126例内科冠心病患者，采用 回顾性研究将其分为SMI动态心电图患者 63例和SMI常规心电图患者60例。收集患 者的一般资料，以及冠状动脉造影结果， 再分别对动态心电图和常规心电图诊断 SMI效果进行敏感度、特异度、准确度分 析。结果 动态心电图组诊断结果显示， 其真阳性值高于假阴性值，差异具有统计 学意义(P＜0.05)。常规心电图组SMI患 者诊断结果显示，其真阳性率高于假阴 性率，差异具有统计学意义(P＜0.05)。 另外，动态心电图组诊断敏感性显著高于 常规心电图组(P＜0.05)，动态心电图组 敏感诊断特异度显著高于常规心电图组(P ＜0.05)，动态心电图组的敏感诊断准确 度显著高于常规心电图组组(P＜0.05)。 结论 动态心电图能够准确的检测出SMI患 者体征，对评估患者的预后有极其重要的 意义。

Objective To compare the dynamic electrocardiogram (DCG) and coronary CT angiography (CTA) in patients with silent myocardial ischemia (SMI), so as to investigate the clinical value of DCG and provide reference for better treatment. Methods A total of 126 patients with coronary heart disease admitted to our hospital from June 2017 to May 2018 were selected and divided into DCG group (n=63) and ECG group (n=60). The general data and the CTA results of patients were collected. Then the sensitivity, specificity and accuracy of DCG and ECG in the diagnosis of SMI were analyzed. Results The true-positive value was higher than the false-negative value in both DCG group and ECG group (P<0.05). The sensitivity, specificity and accuracy of DCG in the diagnosis of SMI were higher than those of the ECG (P<0.05). Conclusion The application of DCG can accurately detect the signs of SMI patients, which is extremely important for the prognosis assessment.