Practical Study on Storage Period Safety of Soft Endoscope After High-Level Disinfection
Objective To investigate the safe storage time of soft endoscopes by monitoring the microbial contamination of the lumen of soft endoscopes stored in the mirror cabinet for different times after high-level disinfection. Methods Random sampling was used to select the biopsy and suction cavities of the flexible endoscopes after disinfection in the endoscopy center,the First Affiliated Hospital of Guangzhou Medical University from May to December 2023. There were three different brands of mirror cabinets for storing endoscopes. During endoscopic storage,the temperature and humidity of endoscopic storage should be strictly controlled to maintain a temperature of 15-25 ℃ and a humidity of 41％-60％. The sampling time corresponds to the endoscopic storage time,and samples were taken at 1,2,3,5 and 7 d after storage. At each time point,30 samples were planned to be sampled,15 samples were collected by fiberoptic bronchoscopy and 15 samples were collected by digestive endoscope. During the period from May to September 2023,among the 145 mirrors sampled,one of the endoscopic monitoring results stored for 3 d exceeded the standard,the result was 24 CFU/piece,and the rest of the endoscopes were qualified. Therefore,the number of samples for endoscopes stored within two days was increased,and the endoscopic safety of storage for 1-2 d is further evaluated by monitoring results. Results From May to December 2023,a total of 334 endoscopes were included in the monitoring,185 in fiberoptic bronchoscopy and 149 in digestive endoscopy. Among the 334 endoscopes,the colonies of two endoscopes stored for 1 and 3 d were 25 CFU/piece and 24 CFU/piece respectively,which exceeded the standard. The results of the other 332 endoscopes were qualified,and the overall qualified rate was 99.4％. Conclusion Under the premise of ensuring the high-level disinfection effect of the soft endoscope,strictly control the temperature and humidity of the mirror cabinet,and use the mirror cabinet with circulating clean air,dry or ultraviolet disinfection to ensure a good storage environment,after high-level disinfection of non-operative soft endoscope,the soft endoscope stored within 2 d is safe and does not need to be processed on the same day of use.
万方数据
维普
