Table 1.

MICs of β-lactams for P. aeruginosa isolates 871 and 873

StrainMIC (μg/ml)a
PipPip-ClavPip-TazCbCb-ClavCb-TazCazCaz-ClavCaz-TazCtxCtrCslCpmCprCpzMoxAztMemImp
8713232321,0242565121281664641281283264128321280.52
873643264>512512>512128163212812864163212864640.254
PU21(pMLH57)/PER-1b 8485121282562564128641281283264321612812
PU21244646464422161622888412
  • a Azt, aztreonam; Cb, carbenicillin; Clav, clavulanate at 4 μg/ml; Cpm, cefepime; Cpr, Cefpirome; Cpz, cefoperazone; Csl, cefsulodin; Ctx, cefotaxime; Caz, ceftazidime; Ctr, ceftriaxone; Imp, imipenem; Mem, meropenem; Mox, moxalactam (latamoxef); Pip, piperacillin; Taz, tazobactam at 4 μg/ml.

  • b P. aeruginosa PU21 with pMLH57 plasmid coding PER-1 β-lactamase.