Q-Tc离散度在运动试验中的意义

目的探讨Q－Tc离散度（Q－Tcd）对运动试验的临床价值。方法测量31例活动平板运动试验阳性患者运动前后Q－Tcd变化，与63例运动试验阴性者作对照。结果运动试验阳性组与对照组在运动前后各相同时间比较差异有显著性（P＜0．01），运动后阳性组Q－Tcd显著高于对照组（p＜0．001），而对照组运动前后Q－Tcd差异无显著性（P＞0．05）。结论Q－Tcd可作为判断运动试验结果的一项重要指标。

The value of Q-Tcd in exercising test

Objective To assess clinical value of Q - Tcd in exercising test.Methods Before and after exercisingQ - Tcd was measured in 31 positive cases compared with 63 negative cases in exercising test. Results The Results of comparing Q-Tcd in positive group with that in negative group was very different (P < 0.001). The Q - Tcd in positive groupwas higher than that in negative group after exercisin test (P < 0.001), but results of Q- Tcd before and after exercisinghad no difference in negative group (P > 0.05). Conclusion The results indicate that Q - Tcd is an important index to distinguish sign of exereising test.