Analysis of the effects of different treatment procedures on cleaning and disinfection of ventilator pipes and accessories
Objective To explore the effect of different treatment procedures on the disinfection of ventilator pipes and acces-sories.Methods 250 sets of ventilator pipes and accessories from the disinfection supply room of General Hospital of Eastern The-ater Command from December 2022 to February 2023 were selected as the research objects,and randomly divided into 5 groups accord-ing to the order of use,with 50 sets in each group,and and different cleaning and disinfection methods were applied to different groups.Group A was treated with manual cleaning+chlorine-containing disinfectant soaking;Group B was treated with manual cleaning+auto-matic cleaning sterilizer;Group C was treated with manual cleaning+chlorine-containing disinfectant soaking+automatic cleaning steril-izer;Group D was treated with manual cleaning with enzyme+ultrasonic cleaning machine+chlorine-containing disinfectant soaking,and Group E was treated with manual cleaning with enzyme+ultrasonic cleaning machine+automatic cleaning sterilizer.The samples of the most-difficult-to-clean-and-to-disinfect parts of the pipes were collected after disinfection for bacterial culture.Results The re-sults showed that after disinfection,the 5 groups of ventilator pipes all met the requirements of the Regulation,but the bacteria number of the humidification tank in Group E was(0.03±0.01)cfu/c㎡,and the bacteria number of the ventilator pipe was(0.02±0.01)cfu/cm2,which was significantly lower than that of other groups(P<0.05).Conclusion The pollution of ventilator pipes and acces-sories is quite serious.All the 5 methods can achieve high level disin-fection,but the result of Group E-manual cleaning with enzyme+ultra-sonic oscillator+automatic cleaning sterilizer was the best.
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