TABLE 2.

Activities of antibiotics against CR-PA isolates

AntibioticMIC (μg/ml)aNo. of isolates resistant/totala (%)
Piperacillin>649/42 (21)
Ticarcillin>6412/42 (28.5)
Ceftazidime>812/42 (28.5)
Aztreonam>814/42 (33)
Gentamicin>426/42 (62)
Tobramycin>423/42 (55)
Amikacin>168/42 (19)
Ciprofloxacin≥225/42 (59.5)
Imipenem≥842/42 (100)
Meropenem≥825/42 (59.5)
  • a The number and percentage of resistant isolates were defined according to NCCLS nonsusceptibility breakpoints and therefore include both the intermediate and resistant categories.