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观察40例平板运动试验心电图 Q—Tc、R 波振幅及 ST 参数的变化情况。并结合冠状动脉造影结果进行对比分析后发现;△Q—Tc 为诊断冠心病的较好指标(敏感性86.4%、特异性66.7%);△R指标单独用于诊断冠心病的价值不大(敏感性27.3%、特异性77.8%);△Q—Tc 和△R指标如非结合 AST 指标综合应用,可提高运动负荷试验诊断冠心病的准确性。
The changes of Q-Tc, R wave amplitude and ST parameters in 40 treadmill exercise tests were observed. And compared with coronary angiography results were analyzed and found; △ Q-Tc for the diagnosis of coronary heart disease better indicators (sensitivity 86.4%, specificity 66.7%); △ R index alone for the diagnosis of coronary heart disease is of little value Sensitivity 27.3%, specificity 77.8%); △ Q-Tc and △ R indicators, such as unconjugated AST comprehensive application, can improve the accuracy of exercise stress test diagnosis of coronary heart disease.