医疗卫生装备2018，Vol.39Issue(4)：6-10,5.DOI:10.7687/j.issn1003-8868.2018.04.006
基于EIT技术监测体姿改变对肺通气影响的实验研究
Experimental study on effect of body position on lung ventilation determined by electrical impedance tomography
摘要
Abstract
Objective To monitor and compare the effects of body position on the regional lung volume and FEV1/FVC with electrical impedance tomography(EIT).Methods Twelve healthy young subjects[(26.6±2.5)yr]were detected by EIT during FVC maneuver in 3 body positions (sitting,supine and prone).Functional EIT images of FVC and FEV1/FVC were obtained;the proportion of regional ventilation volume and the mean of regional FEV1/FVC were calculated.Results The ventral and dorsal proportion of ventilation volume was 37.65% : 62.35% in sitting position and 37.59% : 62.41% in supine position, respectively.While in the prone position,the value was 48.56%:51.44%,which was close to 1:1.The mean of regional FEV1/FVC in the dependent lung region was 0.84 in supine position and 0.81 in prone position,while in sitting position,the corresponding value was 0.90 and 0.94, respectively. Conclusion The results shows that the ventilation transfers to the gravity dependent region obviously, while the flow rate decreases. The result provides direct evidences for mechanical ventilation patients using prone position to improve oxygenation,as well as a research foundation for EIT monitoring regional lung ventilation in the clinical setting.关键词
电阻抗断层成像/体姿/肺通气量/肺通气流速/用力肺活量/重力依赖Key words
electrical impedance tomography/body position/lung ventilation volume/lung flow rate/forced vital capacity/gravity dependence分类
医药卫生引用本文复制引用
张超,吴佳铭,代萌,夏军营,付峰,尤富生..基于EIT技术监测体姿改变对肺通气影响的实验研究[J].医疗卫生装备,2018,39(4):6-10,5.基金项目
陕西省重大专项课题(2013ZXC-06-04) （2013ZXC-06-04）
原第四军医大学科技发展基金(2017XB006) （2017XB006）
军队重大项目(AWS14C006) （AWS14C006）
