（3）心脏自主功能检查（cardiac autonomic nerve function,CANF）用Cardiofax-Q型心电图机（日本Nihon Kohden公司），依照Ewing法［3］测基础...
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Objective: Comprehend the variation and clinical significance of cardiac autonomic nerve(CAN) function of the aged.
目的：了解老年人心脏自主神经（CAN）功能的变化及临床意义。
Conclusion: it is suggested that the analysis of power spectrum of HRV be a sensitive noninvasive method to evaluate the function of cardiac autonomic nerve.
结论：HRV频谱分析对评价心脏植物神经功能是一种敏感而无创的检测指标。
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