Graduate School of Engineering, Hiroshima University, Higashi, Hiroshima, Japan.
Med Biol Eng Comput. 2010 Apr;48(4):351-9. doi: 10.1007/s11517-010-0580-7. Epub 2010 Feb 2.
This paper proposes a new method of evaluating autonomic nervous activity using the mechanical impedance of arterial walls and heart rate variability. The cardiovascular system is indispensable to life maintenance functions, and homeostasis is maintained by the autonomic nervous system. Accordingly, it is very important to be able to make diagnosis based on autonomic nervous activity within the body's circulation. The proposed method was evaluated in surgical operations; the mechanical impedance of the arterial wall was estimated from arterial blood pressure and a photoplethysmogram, and heart rate variability was estimated using electrocardiogram R-R interval spectral analysis. In this paper, we monitored autonomic nervous system activity using the proposed system during endoscopic transthoracic sympathetic block surgery in eight patients with hyperhidrosis. The experimental results indicated that the proposed system can be used to estimate autonomic nervous activity in response to events during operations.
本文提出了一种利用动脉壁的力学阻抗和心率变异性评估自主神经活动的新方法。心血管系统是维持生命功能所必需的，而自主神经系统则维持着体内循环的内环境稳定。因此，能够基于自主神经活动进行诊断是非常重要的。该方法在手术中进行了评估；通过动脉血压和光体积描记图估计动脉壁的力学阻抗，并通过心电图 R-R 间隔频谱分析估计心率变异性。在本文中，我们在 8 例多汗症患者的内窥镜经胸交感神经阻断手术中使用所提出的系统监测自主神经系统活动。实验结果表明，所提出的系统可用于估计手术过程中事件引起的自主神经活动。
