227例平板运动试验与冠状动脉造影结果对照分析

Comparison of the results of treadmill exercise test with coronary angiography in 227 patients

目的将平板运动试验的结果与冠状动脉造影(CAG)的结果对照,探讨心电图平板运动试验反映冠状动脉病变的价值。方法选择临床拟诊冠心病(CAD)患者227例,二周内行平板运动试验与CAG检查。将平板运动试验的结果与CAG的结果对照分析。结果227例患者中,平板运动试验阳性99例,其中CAG阳性75例,CAG阴性24例。平板运动试验阴性128例,其中CAG阴性109例,CAG阳性19例。平板运动试验检出CAD的敏感性为83.9%(99/118),特异性为82.0%(109/133),阳性预测值75.8%(75/99),阴性预测值85.2%(109/128),预测准确性81.1%(184/227),假阳性率为24.2%(24/99),假阴性率为14.8%(19/128)。总运动时间、峰运动METs、S-T段压低出现的导联数、峰运动收缩压、S-T段压低持续时间,CAG阳性组与CAG阴性组比较差异有统计学意义(P<0.05)。平板运动试验阳性率,CAG阳性组与CAG阴性组比较差异有统计学意义(P<0.05)。女性平板运动试验假阳性率高于男性组(P<0.05)。结论平板运动试验是诊断CAD的无创性检查方法之一。它操作简单、经济、实用,适合临床广泛应用。

Objective Both coronary angiography （CAG） and treadmill exercise testing were done. To elucidate the value of treadmill exercise testing in coronary artery disease（CAD ）. Metheds 227 patients of suspected CAD in clinic were examed in two weeks. Treadmill exercise testing date were compared with that of CAG. Results Treadmill exercise testing results were positive in 99 patients and CAG results were positive in 75 patients of them and negative in 24 patients of them. Treadmill exercise testing were negative in 128 patients and CAG results were negative in 109 patients of them and positive in 19 patients of them. The sensitivity, specificity, accuracy, false positive rate and false negative were 83.9%（99/118）, 82.0%（109/133）, 81.1%（184/227）, 24.2%（24/99）, 14.8%（19/128）. Conclusion Treadmill exercise testing is one of non-invasive exam methods in the diagnosis of CAD. It is simple, economic, practical and fits to apply in clinic.