Table 4 Antimicrobial susceptibilities of Gram-negative microorganisms isolated from infections in ICU.
Percentage (%) of isolates resistant to antimicrobial by broth microdilution | |||||
|---|---|---|---|---|---|
Antimicrobial | P. aeruginosa n = 157 | A. baumannii n = 74 | Enterobacter spp n = 32 | K. pneumoniae n = 25 | E. coli n = 38 |
Amikacin | 29.9% | 71.6% | 59.4% | 16% | 18.4% |
Azteronam | 77.1% | 94.6% | 81.2% | 88% | 86.8% |
Piperacillin | 69.4% | 100% | 71.8% | 76% | 68.4% |
Ticarcillin | 93% | 93.2% | 81.2% | 64% | 68.4% |
Ceftriaxone | 98.1% | 100% | 59.4% | 84% | 84.2% |
Cefotaxime | 96.2% | 100% | 59.4% | 84% | 84.2% |
Ceftazidime | 71.3% | 100% | 75% | 88% | 86.8% |
Ciprofloxacin | 59.2% | 56.7% | 0% | 20% | 39.5% |
Imipenem | 26.1% | 63.5% | 0% | 12% | 13.1% |
Cefoperazone | 93% | 100% | 62.5% | 72% | 86.8% |
Gentamicin | 48.4% | 85.1% | 81.2% | 80% | 78.9% |