Simulation Study on the Influence of Sampling Delay on the Accuracy of Energy Metabolism Measurement.
10.3969/j.issn.1671-7104.2022.04.007
- Author:
Anqi ZHANG
1
;
Yanyan CHEN
1
;
Yuan WANG
1
;
Wei FANG
1
;
Yining SUN
1
;
Zuchang MA
1
;
Xianjun YANG
1
Author Information
1. Hefei Institute of Physical Science, Chinese Academy of Sciences, Hefei, 230031.
- Publication Type:Journal Article
- Keywords:
breath-by-breath method;
indirect energy metabolism;
mechanical ventilation;
sampling delay;
sidestream sampling
- MeSH:
Computer Simulation;
Critical Illness;
Energy Metabolism;
Humans;
Respiration, Artificial
- From:
Chinese Journal of Medical Instrumentation
2022;46(4):382-387
- CountryChina
- Language:Chinese
-
Abstract:
Indirect energy metabolism measurement is the gold standard for providing nutritional support for critical illness. The accuracy of the measurement data directly affects the outcome of the disease. In order to study the influence of sampling delay on the accuracy of energy metabolism measurement under mechanical ventilation, the Matlab/Simulink platform and respiratory electrical model were used for simulation and quantitative analysis. The results show that the error of indirect energy metabolism measurement increases with the increase of sampling delay, the error of sampling delay in mechanical ventilation mode is larger than that of spontaneous breathing, and the error of sampling delay in PCV mode of mechanical ventilation is larger than that in VCV mode. Therefore, there should be different sampling delay compensation strategies under severe mechanical ventilation and its different control modes.
