TABLE 1.

Rates of antibacterial resistance among P. aeruginosa isolates from hospitals and ICUs

Antibiotic% of strains exhibiting resistancea
Hospital study, 2006 (n = 606) (211)Hospital study, 2005 (n = 589) (212)Hospital study, 2002 (n = 9,896) (54)ICU study, 2002 (n = 951) (178)ICU study, 2000-2002 (n ≥ 7,500) (95)Hospital study, 2001 (n ≥ 2,157) (99)ICU study, 2001 (n ≥ 543) (99)Hospital study, 2000 (n = 882) (100)
β-Lactams
    Cefepime65925128109
    Ceftazidime13101319179913
    Piperacillin-tazobactam1191110148813
    Aztreonam1232
    Imipenem117162322121616
    Meropenem6718111610
Fluoroquinolones
    Ciprofloxacin2122353233262525
    Levofloxacin22223432272527
Aminoglycosides
    Amikacin51043
    Tobramycin8101216
    Gentamicin12121622151514
  • a Based upon CLSI interpretive breakpoints.