Figure 1. Frequency of P. aeruginosa strains resistant to betalactamics (top) as well as aminoglycosides and quinolones (bottom). TZP: piperacillin/tazobactam, CAZ: ceftazidime, FEP: cefepime, ATM: aztreonam, IPM: imipenem, MEM: meropenem, GM: gentamicin, NN: tobramycin, NET: netilmicin, AK: amikacin, CIP: ciprofloxacin, LVX: levofloxacin; NOR: norfloxacin.