吴楚海 朱士彦 程卓

    [摘要] 目的 探讨主动脉弓钙化维持性血液透析患者QT离散度、心率变异性和心室晚电位变化。 方法 选择2014年1月～2017年12月广东医科大学附属第三医院进行维持性血液透析治疗的患者52例，根据患者是否存在主动脉弓钙化将其分为钙化组和非钙化组。比较两组患者的基本临床指标、QT离散度、心率变异性指标和心室晚电位。 结果 钙化组患者35例，非钙化组患者17例。与非钙化组比较，钙化组患者平均年龄更大，透析龄更长，平均脉压差更高，差异有统计学意义(P 0.05)；钙化组患者标准化低频功率(LFn)值和功率变异比值[低频功率(LF)/高频功率(HF)比值]均显著低于非钙化组，差异有统计学意义(P 0.05)。 结论 维持血液透析患者主动脉弓出现钙化会引起心脏QT离散度改变，心率变异性降低，且使得患者更加容易出现心室晚电位。

    [关键词] 维持性血液透析；QT离散度；心率变异性；心室晚点位

    [中图分类号] R541.4 [文献标识码] A [文章编号] 1673-7210(2018)06(b)-0044-04

    [Abstract] Objective To investigate the clinical significance of QT dispersion， heart rate variability and ventricular late potentials in patients with aortic arch calcification maintenance hemodialysis. Methods From January 2014 to December 2017， in the Third Affiliated Hospital of Guangdong Medical University， 52 patients with maintenance hemodialysis were selected， according to whether with or without aortic arch calcification， patients were divided into calcification group (35 cases) and non-calcification group (17 cases). The basic clinical indexes， QT dispersion， heart rate variability index and ventricular late potentials in two groups were compared. Results Compared with the non-calcification group ......