Objective To investigate the clinical value of dynamic electrocardiogram (ecg) in diagnosis of coronary heart disease.Methods Select our hospital from January to December 2015 were 196 cases of coronary heart disease patients were randomly divided into observation group and 98 cases of dynamic electrocardiogram (testing) and control group, 98 cases (routine electrocardiogram test), the result of the two groups of myocardial ischemia and arrhythmia de-tection.Results Observation group positive detection rate was 81.63% (80/98), the positive rate in the control group was 50.00%(49/98), namely, compared two groups have significant difference (P< 0.05);Observation group short array room rate 41.84%(41/98) and ventricular premature beat in 46.94% (46/98) of the results is better than that of control group short array room rate 15.31% (15/98), 10.20% (10/98) in pairs, premature compared significant difference (P < 0.05). Conclusion In the diagnosis of coronary heart disease and 24 h compared with the conventional electrocardiogram di-agnosis of the application of dynamic electrocardiogram (ecg) has a good diagnosis effect, in 24 h combined with dy-namic electrocardiogram diagnosis is noninvasive, can repeat testing, most patients have tolerated.%目的：探讨冠心病诊断中动态心电图的临床应用价值。方法选取该院2015年1—12月收治的冠心病病人196例随机分为观察组98例(动态心电图检测)和对照组98例(常规心电图检测)，对两组心肌缺血以及心律失常检测结果进行观察。结果观察组阳性检出率为81.63%(80/98)，对照组阳性检出率为50.00%(49/98)，即两组相比差异具有统计学意义(P<0.05)；观察组短阵室上速41.84%(41/98)以及室性早搏成对46.94%(46/98)的结果优于对照组短阵室上速15.31%(15/98)、室性早搏成对10.20%(10/98)，相比差异有统计学意义(P<0.05)。结论冠心病诊断中24 h动态心电图的应用相比于常规心电图的诊断其具有良好的诊断效果，在加之24 h动态心电图诊断是无创操作，能重复进行检测，多数患者都能耐受。
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