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作者测量100例妇女心电图运动试验后即刻QTc间期。冠心病组50例运动后即刻QTc间期比静息时明显延长(P<0.001),比正常配对组50例则明显缩短(P<0.001)。以QTc间期延长≥0.01秒力阳性指标,与ST段压低比较,其敏感性可从42％提高至70％,特异性从66％提高至76％;如综合QTc间期与ST段标准加以判断时,可使敏感性、特异性分别增至74％、88％。
The authors measured QTc interval immediately after electrocardiogram exercise test in 100 women. The QTc interval was significantly prolonged in 50 patients with coronary heart disease (P <0.001) immediately after exercise, compared with 50 patients in the normal matched group (P <0.001). With QTc interval prolongation ≥0.01 seconds force positive indicators, compared with ST segment depression, the sensitivity can be increased from 42% to 70%, specificity increased from 66% to 76%; as integrated QTc interval and ST segment standard Judgment, can make the sensitivity and specificity were increased to 74%, 88%.