Fuchs P C, Barry A L, Jones R N
St. Vincent Hospital and Medical Center, Portland, Oregon 97225.
J Clin Microbiol. 1988 Jun;26(6):1246-7. doi: 10.1128/jcm.26.6.1246-1247.1988.
A total of 97 anaerobic bacteria were tested for susceptibility to ampicillin, ampicillin-sulbactam, and amoxicillin-clavulanic acid by broth microdilution and disk elution methods, the results of which were compared with those of the reference agar dilution method. With the broth microdilution method, approximately 95% of MICs were within 1 dilution of those of the reference agar method, with a definite (0.6 to 0.7 dilution) trend toward lower MICs. The disk elution test performed satisfactorily, but additional anaerobic isolates resistant to ampicillin-sulbactam and/or amoxicillin-clavulanic acid (currently rare) are needed to assure the predictability of resistance by the disk elution test.
通过肉汤微量稀释法和纸片洗脱法对总共97株厌氧菌进行了氨苄西林、氨苄西林-舒巴坦和阿莫西林-克拉维酸的药敏试验,并将结果与参考琼脂稀释法的结果进行比较。采用肉汤微量稀释法时,约95%的最低抑菌浓度(MIC)与参考琼脂法的结果相差在1个稀释度以内,且有明确(0.6至0.7个稀释度)的趋势显示MIC较低。纸片洗脱试验表现良好,但需要更多对氨苄西林-舒巴坦和/或阿莫西林-克拉维酸耐药的厌氧分离株(目前较为罕见),以确保纸片洗脱试验对耐药性预测的准确性。