Design and Verification of Lung Diffusion Function Detection System.

Author: Wei FANG ¹ ; Yanyan CHEN ¹ ; Yuan WANG ¹ ; Anqi ZHANG ¹ ; Mu WANG ¹ ; Yining SUN ¹ ; Zuchang MA ¹ ; Xianjun YANG ¹ ; Yubing XU ¹
Author Information

1. Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031.
Publication Type:Journal Article
Keywords: chronic obstructive pulmonary disease; pulmonary diffusing capacity for carbon monoxide; pulmonary diffusion function test
MeSH: Carbon Monoxide; Lung; Pulmonary Diffusing Capacity/methods*
From: Chinese Journal of Medical Instrumentation 2022;46(4):408-412
CountryChina
Language:Chinese
Abstract: A lung diffusion function detection system is designed. Firstly, the controllable collection of air, test gas source and calibration gas source was based on single-breath method measurement principle. Secondly, pulmonary diffusing capacity for carbon monoxide (D_lCO) was calculated by gas concentration measured by the non-dispersive infrared sensor to measure, the gas flow measured by the differential pressure sensor, and the temperature, humidity and atmospheric pressure sensors to test and evaluate the quantitative detection and evaluation of lung diffusion function. Moreover, a preliminary verification of the lung diffusion function detection system was implemented, and the results showed that the error of the lung carbon monoxide diffusion and the alveolar volume did not exceed 5%. Therefore, the system has high accuracy and is of great value for early screening and accurate assessment of COPD.