Current status and influencing factors for water contamination in humidification tanks of ventilators of invasive mechanical ventilation patients
10.11816/cn.ni.2025-258003
- VernacularTitle:有创机械通气患者呼吸机湿化罐水污染现况及其影响因素
- Author:
Qian ZHOU
1
;
Rong XU
;
Xiaona ZHANG
;
Huan LI
;
Xiaoming ZHANG
;
Mingmei DU
;
Yunxi LIU
;
Yanling BAI
Author Information
1. 解放军总医院第一医学中心疾病预防控制科,北京 100853;贵州省兴义市人民医院医院感染管理科,贵州兴义 562400
- Publication Type:Journal Article
- Keywords:
Invasive mechanical ventilation;
Humidified water of ventilator;
Humidification tank;
Bacterial con-tamination
- From:
Chinese Journal of Nosocomiology
2025;35(17):2660-2663
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE To observe the current status and influencing factors for the water contamination of humid-ification tanks of ventilators of the patients undergoing invasive mechanical ventilation.METHODS Totally 139 hu-midified water samples were collected from the patients who received invasive mechanical ventilation in The First Medical Center of Chinese PLA General Hospital from Jul.2024 to Nov.2024.The humidified water samples were collected,cultured and identified on Day 1,3,5 and 7 after humidification tanks replacement.RESULTS Among the 139 samples,25 were tested positive for pathogens,with the positive test rate 17.99％;the positive test rate was highest(33.33％,8/24)in respiratory intensive care unit.The positive test rate was 12.90％on Day 1,18.42％on Day 3,15.00％on Day 5 and 26.67％on Day 7,showing an upward trend.The result of bacterial culture showed that the percentage of isolated Burkholderia cepacia was highest(36.00％).The result of analysis of the related factors for positive test of humidified water samples showed that the sample adding pattern was as-sociated with the isolation rate(P＜0.05).Only 1 case was diagnosed with ventilator-associated pneumonia(VAP)after the humidified water was detected with pathogens and varied in the pathogens.CONCLUSIONS There is an association between the status of water contamination of the ventilator humidification tanks and usage duration of humidification tank.It is necessary to attach great importance to the contamination of humidification tanks,carry out standard management,and implement the prevention and control measures in an all-round way.
