Trial Product of the Autonomic Nerve Function Analyzable System availed the Fluctuation of the R-R interval variations of ECG

心电R-R间期变异测量分析自主神经功能的有用仪器它有以下几个特征功能：(1)从最大250次心跳的记忆中立即完成计算。(2)通过快速傅立叶变换(FFT)绘制功率谱和从多个输入的心电波形中提取直方图。(3)在CRT显示器上以连续趋势图的形式显示静息和站立运动时170秒内100-250次心搏的所有R-R间期。这些保存在软盘上的数据可以重复使用和相互比较。近几年来，我们研究了心电R-R间期波动的计算机分析系统。我们开发并成功实现了这些软件的功能升级，使之能够在CRT上显示，并在打印输出中计算出仰卧位和立位挑战时R-R间期(MRR)平均值的差值。另外，我们得到了交感神经和副交感神经之间的中间点，即大约800毫秒。取40例青年(平均25.5岁)的R-R间期各平均值。因此，如果结果小于800毫秒，则似乎是交感优势；如果结果大于800毫秒，则似乎是副交感优势。此外，从我们的仪器中还可以通过其他多方面的分析来了解其多个特性

A useful instrument for analysis of autonomic nerve function by R-R interval variations measurement of ECG produced as new trial. It has next few characteristic functions.(1)From the memories of 250 heart beats in maximum, immediate compute is accomplished.(2)The power spectrum by Fast Fourier Transforms(FFT)and the histogram from the many inputted ECG waves are delineated.(3)All R-R interval of 100-250 beats in 170 seconds are showed on CRT display as continuous trendgraphs at the resting supine and standing exercise. and from the view of these neighboring or unification, the quality of balancing function of autonomic nerve system can be judged before the patient's eyes.(4)These date which were preserved in floppy disc can be reuse and compate each other.Since several years, we have studied on the computer analysis system of the fluctuation of the R-R interval variations of ECG. We made the function of these software developed and succeeded in the version-up of the software to be able to show on the CRT and in the print-out the calculation-score the difference between the average of R-R interval(mRR)in supine and standing challenge. Otherwise we obtained the middle point between the sympathetic and parasympathetic, that is about 800 m sec. of the each mean values of the R-R interval from the data of 40 young persons(25.5 year old average). Therefore if a result is little than 800 m sec., it seems to be sympathetic dominant, and if a result is large than 800 m sec, it seems to be parasympathetic dominant. Moreover, we are able to know the multi-characteristics by other many-sided analysis from our instrument