Performance test of high-flow nasal cannula oxygen therapy device at different altitudes
10.19745/j.1003-8868.2024112
- VernacularTitle:不同海拔下经鼻高流量湿化氧疗仪性能测试
- Author:
Chun-Wei HE
1
;
Ya-Ting WANG
;
Yi-Long ZHOU
;
Hui WANG
;
Zi-Yu FU
;
De-Dong MA
Author Information
1. 山东大学齐鲁医院呼吸与危重症医学科,济南 250012
- Keywords:
high-flow nasal cannula oxygen therapy device;
high-flow nasal cannula oxygen therapy;
high altitude environ-ment;
performance testing;
airway flow rate;
airway pressure
- From:
Chinese Medical Equipment Journal
2024;45(6):49-58
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the performance of brands and types of high-flow nasal cnnula oxygen therapy(HFNC)devices at different altitudes.Methods Four different models of HFNC devices,including R-80S bi-level non-invasive ventilator integrated with HFNC device,HF-60A HFNC device,HFT-300 HFNC device and H-80A HFNC device,were connected with the gas flow meter,simularted head and QuickLung and then put into a low-pressure chamber.The flow rates of the HFNC devices were set to 10,15,20,25,30,35,40,45,50,55 and 60 L/min,and the simulated altitudes of the low-pressure chamber were set to 6 000,5 000,4 000,3 000,2 000,1 000 and 0 m.The actual output airway flow rates,airway pressure changes and trends of the four HFNC devices were recorded at different setting altitudes and flow rates.SPSS 25.0 software was used for statistical analysis.Results The actual output airway flow rates of the four HFNC devices showed an increasing trend as the altitude rose with the simulated altitude of 6 000 m and the setting flow rate kept constant,which increased slowly and even went to decrease when the altitude and flow rate exceeded some limits.The degree of changes in the flow rate with the increasing altitude varied,and there was no uniform pattern.With the rising of altitude,the actual output airway pressure of the four HFNC devices with the flow rate raning from 10 to 35 L/min also increased gradually,which showed a decreasing trend(turning point)after going up to some certain value when the flow rate exceeded 35 L/min,and the altitude where the turning point appeared was lowered as the flow rate increased.Conclusion The actual output airway flow rates and airway pressure during HFNC rise at a high-altitude environment,and generally considerations have to be taken on required airway pressure,patient comfort and the altitude of the patient's usual place of residence when setting the flow rates of the HFNC device.[Chinese Medical Equipment Journal,2024,45(6):49-58]
