糖尿病心率变异性分析与QT离散度的关系
JOURNAL OF CHINA-JAPAN FRIENDSHIP HOSPITAL（2005）
Abstract
QT离散度(QT dispersion,QTd)是评价心脏肌电不稳定性的简单无创指标,糖尿病(diabetes mellitus,DM)合并自主神经病变(diabetes autonomic-neuropathy,DAN)心脏交感-迷走神经的活动失衡,使患者心脏电活动不稳定,心肌缺血、无痛性心肌梗死以及心脏性猝死的发生率增加.文献报道,心率变异(heart rate variability,HRV)可作为判定自主神经病变的定量指标,常用的HRV指标:24h全部正常R-R间期的标准差(SDNN)＞100ms为正常,＜50ms则肯定有自主神经病变[1].
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