TABLE 2.

In vitro antimicrobial resistance rates for P. aeruginosa, 1993 to 2002a

YrNo. of isolatesIMPCAZCEFP/TPITIMAZTAKTOBGENCIPLEV
19939601515NANA111426792915NA
19941,0411516NANA13182912112917NA
19951,1221516NANA111727892619NA
19961,0751518NANA1217278102519NA
19971,3381618NA9142029892622NA
19982,312131716101318298123225NA
19991,716171824121620339143628NA
20001,623161924121519339123228NA
20011,861192128131921351317NA3430
2002951231925101517321016NA3234
P valueb<0.00010.0002<0.00010.0005<0.00010.001<0.0001<0.0001<0.0001<0.0001<0.00010.024
  • a IMP, imipenem; CAZ, ceftazidime; CEF, cefepime; P/T, piperacillin-tazobactam; PI, piperacillin; TIM, ticarcillin-clavulanate; AZT, aztreonam; AK, amikacin; TOB, tobramycin; GEN, gentamicin; CIP, ciprofloxacin; LEV, levofloxacin; NA, not available. Twelve of 17 antibiotics tested against P. aeruginosa are shown. Data presented as percentages.

  • b P values representative of available resistance data.