Universal Modeling Method of Electrical Impedance Response During Respiration  

作　　者：LIU Enkang MA Yixin BAI Zixuan ZHOU Xing ZHANG Mingzhu JIANG Zeyi 刘恩康;马艺馨;白子轩;周星;张明珠;江泽裔

机构地区：[1]School of Electronic Information and Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China [2]Shanghai Engineering Research Center for Intelligent Diagnosis and Treatment Instrument,Shanghai 200240,China

出　　处：《Journal of Shanghai Jiaotong university(Science)》2024年第6期967-978,共12页上海交通大学学报(英文版)

基　　金：the Interdisciplinary Program of Shanghai Jiao Tong University(No.YG2021QN37)。

摘　　要：In recent years,significant progress has been made through impedance pneumography(IP)in diagnosing pulmonary function.Since there is no need to measure inhalation and exhalation air flow through a pipeline,IP does not increase respiratory resistance and poses no risk of cross-infection,which makes it superior to existing gas flowmeter-based spirometers in clinics.However,the changes in thoracic impedance caused by pulmonary ventilation present significant individual variability.The ratio between pulmonary ventilation volume change(ΔV)and thoracic impedance change(ΔZ),noted as kΔV/ΔZ,differs among people.IP has to be calibrated for each person by flowmeter-type spirometer before it can be used for quantitative diagnosis.This study aimed to develop a universal model for kΔV/ΔZ using individual parameters such as body height,body mass,body mass index,body fat rate,and chest circumference.The experimental procedure,the way to identify factors for multiple regression via significance analysis and the comparison among different models are presented.This paper demonstrates the possibility of establishing a universal regression model for kΔV/ΔZ,to lay the foundation for the clinical application of IP-based pulmonary function test.

关 键 词：impedance pneumography pulmonary function test multiple regression 

分 类 号：TH776[机械工程—仪器科学与技术] R444[机械工程—精密仪器及机械] O212.1[医药卫生—诊断学]