Methods: Using 24 h dynamic EDG of American DMS Company with 6.0 Gold software, we made linear analysis and non-linear analysis on 40 cases, which were composed of retired old people and convalescents in our sanatorium.

• 方法:对40例离退休老年人及疗养员健康查体；采用美国DMS公司24hDCG最新6.；0Gold软件进行线性及非线性分析方法；用HRV数据来评价CAN功能状态。