Study on the effects of non-humidification and inlet humidification devices on the output flow of the Venturi mask
10.3761/j.issn.0254-1769.2025.07.010
- VernacularTitle:无湿化与湿化装置对文丘里面罩输出氧流量的影响研究
- Author:
Zheng LIANG
1
;
Shuangxia HUANG
1
;
Zhi YANG
1
;
Caiying LI
1
Author Information
1. 530021 南宁市 广西医科大学第一附属医院急诊科
- Publication Type:Journal Article
- Keywords:
Humidification;
Venturi Mask;
Flow;
Oxygen Therapy;
Concentration;
Nursing Care
- From:
Chinese Journal of Nursing
2025;60(7):831-835
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effect of non humidification,200 ml and 100 ml distilled water humidification on oxygen output flow of Venturi mask,and to provide basis and reference for clinical application of Venturi mask oxygen therapy.Methods In August 2024,the output end of an oxygen flow meter installed with a water humidification device was connected with a Venturi mask and an external flow sensor of a ventilator in turn.The oxygen output flow of the Venturi mask was measured under the conditions of no humidification,200 ml distilled water humidification and 100 ml distilled water humidification,respectively,at oxygen concentration set of 24％,26％,28％,31％,35％,40％and 50％.The measured output flow data of the 3 groups were statistically analyzed.Results The oxygen output flow of the Venturi mask ranged from 7.6 to 45.6 L/min,and the input flow was 3 L/min or 6 L/min.The higher the oxygen concentration,the lower the oxygen output flow of the Venturi mask.Under the same oxygen concentration,the average output flow of 200 ml distilled water humidification group was lower than that of 100 ml distilled water humidification group and non humidification group(P＜0.05).When the oxygen concentration was set at 24％,26％,31％and 35％,the oxygen output flow of non humidification group was higher than that of 100 ml distilled water humidification group(P＜0.05).At 40％and 50％oxygen concentration,the oxygen output flow of 100 ml distilled water humidification group was higher than that of non humidification group(P＜0.05).Conclusion The overall output flow of the Venturi mask is low,and the input flow is the same.The higher the oxygen concentration,the lower the output flow.The humidification of 200ml distilled water may lead to insufficient oxygen flow in patients,while the humidification of 100ml distilled water has little effect on the output flow of Venturi mask.
