Analysis on the Autonomic Nerve Function by the Fast Fouier Transform of ECG wave and Measuring of the Small Quantity of Sweating during Anesthesia

点击翻译按钮获取中文摘要

On the purpose of the measuring of the autonomic nerve functions during anesthesia which have deep relationship between the respiration and circulation control.The R-R interval variation analysings were studied since 1987. As a considering plans of above purpose, we set about the analysing of the power spectrum by Fast Fourier Transform (FFT) from the many inputed waves of R-R interval variation signals mainly, and continuous measuring of a small quantity of local sweating and a temperature of the eardrum which is correlated with brain temperature.By these above datas, the autonomic nerve functions will be able to show totaly. At first, on the analysing of frequency of R-R interval variation waves, the low frequency component/high frequency component ratio from the data of 40 young persons were studied.As the results, a range of the LF/HF ratio was more suitable in the "0.03-0.15 Hz/0.16-0.4Hz" than in the "0.04-0.15Hz/0.16-0.4 Hz" or "0.04-0.12Hz/0.21-0.29Hz" and then the lowest limit of low frequency component was proved at 0.03 or 0.02 Hz.From the datas of standing test and tilting test of the 40 young persons, the standard daras that is supposed of preoperative patients were made. And then both coefficient formula were shown.