超声波清洗关节置换术骨水泥污染器械的细菌残留及影响因素OA

Objective To explore the bacterial residue situation and influencing factors of bone cement-contaminated reusable instruments for orthopedic joint replacement surgery after ultrasonic cleaning.Methods Among 944 bone cement-contaminated reusable instruments for orthopedic joint replacement surgery that were ultrasonically cleaned in the disinfection and supply center of Suqian Hospital of Jiangsu Provincial People's Hospital from February 2023 to January 2025 were selected as the research objects.The bacterial residue situation after ultrasonic cleaning was counted,and univariate and multivariate Logistic analysis were conducted on the factors that might lead to excessive bacterial residue.Results Among the 944 bone cement-contaminated reusable instruments for orthopedic joint replacement surgery after ultrasonic cleaning,92 pieces(9.75%)were detected with excessive bacterial residue.The results of univariate and multivariate Logistic regression analysis showed that complex instrument structure,ethanol pretreatment time≤30 minutes,severe contamination of instruments with bone cement,failure to use appropriate water quality,and failure to add an alkaline cleaning agent were the independent risk factors for excessive bacterial residue(OR>1,P<0.05),while manual cleaning+ultrasonic cleaning was a protective factor to avoid the detection of excessive bacterial residue(OR<1,P<0.05).Conclusion The rate of excessive bacterial residue of bone cement-contaminated reusable instruments for orthopedic joint replacement surgery after ultrasonic cleaning is relatively high.Instruments with a complex structure,short ethanol pre-treatment time,and severe bone cement contamination are more likely to have excessive bacterial residue.In contrast,the use of appropriate water quality,addition of alkaline cleaning agent during cleaning,and manual cleaning+ultrasonic cleaning are conducive to reducing the incidence of excessive bacterial residue.