Decision of Air-pressure Limit Value in the Case of Artificial Respiration
In thes paper,decision of air-bressure limit value in the case of artificial respiration is considered.Air-pressure limit value is an important conditional parameter of artificial respiration .the pulmonary characteristics are very different according to the person.for setting appropriate ventilation conditions fitting to each patient,yt is necessary to establish a mathematiacl model describing the mechanism of human respiratory system,and to know the pulmonary characteristic of each patient via identification of the model.For this purpose,two types of respiratory system models have been proposed by the authors.These models are ecpressed as second order nonlinear differential equations with air-volume variant elastic cofficient and air-volume variant resistive coefficient.In the first type of model,elastic coefficient is expressed as polynomial function of air-volume,while in the second type of model,elastic coefficient is ecpressed by RBF network.The model with polynomial ecpression of elastance has the advantage that the structure is simple .On the other hand,the model with RBF expression of elastance has better numerical stability against the model with polynomial expression of elastance.In this paper,a decision method for air-pressure jimit value based on estimation of the respiration models is proposed.This method adopts a numerical technique to find the point of saturation starting point in the static P_V curve,So direct calculation of radius of curvature can be avoided.The proposed method is validated by some ecamples of application to practical clinical data.
Artificial respiration Model Estimation Deci-sion.
Shunshoku Kanae Zi-jiang Yang Kiyoshi Wada
Department of Electrical and electronic Systems Engineering Graduate School of Information Science and Electrical Engineering Kyushu University Motooka 744,Nishi-ku,Fukuoka,819-0395 Japan
国际会议
2008 IEEE International Conference on Onformation and Automation(IEEE 信息与自动化国际会议)
张家界
英文
1079-1084
2008-06-20（万方平台首次上网日期，不代表论文的发表时间）