Corcoran G D, Holton J, Ridgway G L
Department of Microbiology, University College London Hospitals, UK.
J Hosp Infect. 1994 Aug;27(4):307-15. doi: 10.1016/0195-6701(94)90118-x.
The Wolf 35100 and DSD-91 endoscope disinfection machines were compared. Using a total viable count method, the degree of contamination of an Olympus GIFXQ20 endoscope was assessed following inoculation with a suspension of Pseudomonas aeruginosa and again following disinfection cycles in each machine, using 2% glutaraldehyde as the disinfectant. Both machines performed satisfactorily, with an average reduction of between 7 and 8 log10 cfu ml-1 P. aeruginosa following disinfection. The dilution effect on the glutaraldehyde of repeated disinfection cycles was also assessed for each machine. After 40 cycles in the DSD-91 and 25 cycles in the Wolf 35100 machines, the dilution of glutaraldehyde may give rise to concern, especially if adequate pre-cleaning of the endoscope is not carried out. The DSD-91 machine has certain advantages over the Wolf 35100 in terms of endoscope capacity, running costs and ease of maintenance. Both machines give similar results for endoscope disinfection.
对Wolf 35100型和DSD - 91型内窥镜消毒机进行了比较。采用活菌计数法，在用铜绿假单胞菌悬液接种奥林巴斯GIFXQ20型内窥镜后，以及在每台机器中使用2%戊二醛作为消毒剂进行消毒循环后，评估该内窥镜的污染程度。两台机器的表现均令人满意，消毒后铜绿假单胞菌的平均减少量在7至8个对数10菌落形成单位/毫升之间。还对每台机器重复消毒循环对戊二醛的稀释作用进行了评估。在DSD - 91型机器进行40次循环以及Wolf 35100型机器进行25次循环后，戊二醛的稀释可能会引起关注，尤其是在内窥镜未进行充分预清洁的情况下。DSD - 91型机器在内窥镜处理能力、运行成本和维护便利性方面比Wolf 35100型机器具有一定优势。两台机器在内窥镜消毒方面的效果相似。
