老年人心率变异性线性与非线性检测及应用

The Heart Rate Variability of the Elder with the Linear and Nonlinear method and Application

目的:了解老年人心脏自主神经(CAN)功能的变化及临床意义。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。结果:心率变异的时域指标:SDNN105.2±30.1,SDANNindex112.4±29.2,SDNNindex46.7±14.5,rMSSD24.6±13.1,PNN504.65±6.8;频域指标:TP2378.9±1277,VLP146.0±821.1,LF340.6±207.6,HF106.9±138.8,LF/HF2.8±1.8,均有不同程度的异常改变;非线性指标有全部心率庞加莱散点绘图A、D象限中散点浓密60.86±1.72,B、C象限39.57±6.94,A、D>B、C象限。全部心率庞加莱差值散点图:彗星状21例(52.5%),鱼雷状5例,不成形状2例,扇状3例,短棒状9例,为异常47.5%。结论:老年人的CAN功能有不同程度降低。

Objective: Comprehend the variation and clinical significance of cardiac autonomic nerve(CAN) function of the aged. 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. It can be assessed on their CAN function from the heart rate variability (HRV) data of 40 cases. Results: Both the time domain marks of HRV: SDNN 105.2±30.1, SDANNindex 112.4±29.2, SDNNindex 46.7±14.5, rMSSD 24.6±13.1, PNN 504.65±6.8, and the frequency domain marks: TP 2378.9±1277, VLP 146.0±821.1, LF 340.6±207.6, HF 106±138.8, LF/HF 2.8±1.8 have various abnormal changes. Non-linear marks: from the Poincare plots on all cardiac rates, the density of scatter points in A, D quadrants is 60.86±1.72 as well as 39.57±6.94 in B, C quadrants, that is, A, D>B, C. Among the modifed poincare plots on all cardiac rates, there are 21 cases in normal comet shape (52.5%), and the rest are abnormal cases (47.5%) such as 5 torpedo shapes, 2 compound shapes, 3 fan shapes, 9 short bar shapes. Conclusion: CAN function of the aged has descended to some extent.