Investigation and recommendations on microbiological contamination of 115 endoscopes received before and after disinfection
10.3760/cma.j.cn321463-20250423-00303
- VernacularTitle:115条外来内镜消毒前后微生物污染调查及建议
- Author:
Zi LUO
1
;
Xianglan WANG
;
Xingmin HUANG
;
Renduo SHANG
;
Caiqing ZHANG
;
Honggang YU
;
Jun LIU
Author Information
1. 武汉大学人民医院消化内镜中心，武汉 430060
- Publication Type:Journal Article
- Keywords:
Disinfection;
Endoscopes received;
Qualified rate
- From:
Chinese Journal of Digestive Endoscopy
2025;42(8):649-652
- CountryChina
- Language:Chinese
-
Abstract:
To study the microbiological contamination of endoscopic forceps channel at the time of reception and after disinfection, and gain a preliminary understanding of their real disinfection quality, then analyse the problems and make recommendations. A total of 115 endoscopes received at Renmin Hospital of Wuhan University from June 2022 to December 2023 were chosen. Microbiological sampling and strain identification of the endoscopic forceps channel were carried out at the time of reception of the endoscopes and after cleaning and disinfection, respectively, then the qualified disinfection rate and microbial detection rate were compared. The overall qualified disinfection rate after cleaning and disinfection of endoscopes received (91.3%, 105/115) was higher than that at reception (57.4%, 66/115, χ 2=37.026, P<0.001). The overall microbiological detection after cleaning and disinfection of endoscopes received (13.0%, 15/115) was lower than that at reception (48.7%, 56/115, χ 2=41.000, P<0.001), the detection rate of high pathogenic organisms after cleaning and disinfection (7.0%, 8/115) was lower than that at reception (29.6%, 34/115, χ 2=24.039, P<0.001), low pathogenic organisms after cleaning and disinfection (6.1%, 7/115) was lower than that at reception (19.1%, 22/115, χ 2=13.067, P<0.001). At the time of reception, the qualified disinfection rate was low and the microbiological detection rate was high, and there may become a greater risk of cross-infection; after cleaning and disinfection, the qualified disinfection rate was increased and the microbiological detection rate was decreased, which may greatly reduce the risk of patient infection. Therefore, it is recommended that attention should be paid to the disinfection quality monitoring of endoscopes received before putting into clinical use.
