Zabransky R J, Di Nuzzo A R, Huber M B, Woods G L
Department of Pathology, University of Texas Medical Branch, Galveston.
Diagn Microbiol Infect Dis. 1994 Oct;20(2):113-6. doi: 10.1016/0732-8893(94)90102-3.
The ability of the Vitek AMS system to detect vancomycin resistance in enterococci was evaluated by comparing the results to an agar dilution screen method. Of 100 strains tested, 43 were resistant and 51 were susceptible by both tests. Two strains were intermediate by Vitek but susceptible by agar screen, one was intermediate by Vitek but resistant by agar screen, and four were susceptible by Vitek but resistant by agar screen. When the Vitek intermediate and resistant results were combined, the false resistant rate was 4.4% and false susceptible rate was 8.5%. In its current format, the Vitek system appears not to have acceptable accuracy for the detection of vancomycin resistance in enterococci.
通过将Vitek AMS系统的结果与琼脂稀释筛查方法的结果进行比较，评估了该系统检测肠球菌对万古霉素耐药性的能力。在测试的100株菌株中，两种测试方法均显示43株耐药，51株敏感。有两株在Vitek系统中显示为中介，但琼脂筛查显示敏感；一株在Vitek系统中显示为中介，但琼脂筛查显示耐药；还有四株在Vitek系统中显示敏感，但琼脂筛查显示耐药。当将Vitek系统的中介和耐药结果合并时，假耐药率为4.4%，假敏感率为8.5%。就目前的形式而言，Vitek系统在检测肠球菌对万古霉素的耐药性方面似乎没有可接受的准确性。
