1.Department of Anorectal Surgery, the Second Affiliated Hospital & Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou 325027, China; 2.Department of Nursing, the Second Affiliated Hospital & Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou 325027, China; 3.The Second School of Medicine, Wenzhou Medical University, Wenzhou 325035, China
ZHENG Afen,HUANG Chongjie,YU Yahui, et al. Three common surface disinfection methods in hospitals: a comparison of their effectiveness on items
carried by medical staff[J]. JOURNAL OF WEZHOU MEDICAL UNIVERSITY, 2024, 54(9): 750-754.
Abstract：Objective: To understand the current situation of bacterial contamination of personal belongings carried by medical staff in hospitals, and to explore the effect of different disinfectants on the personal belongings carried by medical staff, so as to provide reference for hospital infection management. Methods: A total of 135 samples of five types of high-frequency contact objects (mobile phones, medical pens, watches, badges, keys) were collected from the medical staff working with the outpatient, surgical, and internal medicine departments of the Second Affiliated Hospital & Yuying Children’s Hospital of Wenzhou Medical University. Alcohol (alcohol group), 500 mg/L chlorine containing disinfectant (chlorine containing disinfectant group), and disposable double chain quaternary ammonium salt disinfectant wipes (disposable disinfectant wipes group) were used for disinfection,and the surface bacterial count and species were sampled and analyzed before disinfection and 5 minutes, 2 hours, and 4 hours after disinfection, and then their disinfection effect at different time points after disinfection was compared. Results: The surface qualification rate of medical personnel carrying items without cleaning and disinfection was only 12.5%, indicating severe contamination and a wide variety of bacterial species. Five minutes after disinfection, the disposable disinfectant wipes group and chlorine disinfectant group showed significantly better bacterial reduction compared with the alcohol group (P<0.05), with bacterial counts decreased from (12.36±3.11) cfu/cm², (12.64±3.98) cfu/cm², and (12.09±4.15) cfu/cm² to (0.40±0.18) cfu/cm², (0.31±0.11) cfu/cm², and (1.62±0.54) cfu/cm², respectively. Although bacterial counts increased at 2-hour and 4-hour points, the levels in the disposable disinfectant wipes and chlorine disinfectant groups remained significantly lower than in the alcohol group (P<0.05). Conclusion: Items carried by medical staff in hospitals has serious bacterial contamination. The disinfection effect is most significant in the initial stage. Disposable disinfectant wipes and chlorine containing disinfectants show better disinfection effect than alcohol in the short term. It is recommended to choose efficient disinfectants and apply them appropriately and frequently.
