Table 8.

Percentages of P. aeruginosa strains for which the MICs of cefepime obtained with VITEK 2 differed from the values obtained by the reference method

Phenotype (no. of strains)% Strains with the following dilution difference:
≥2≤20 ± 1
All strains (146)a5.56.288.3
Basal resistance (48)2.12.195.8
Ceftazidime resistant (19)5.35.389.4
Imipenem resistant (22)4.59.186.4
Ciprofloxacin resistant (26)3.815.480.8
Ceftazidime and imipenem resistant (21)14.34.880.9
  • a Ten strains (corresponding to two minor phenotypes) are not indicated separately.