Table 2.
Drug resistance rate of major gram-negative bacteria to commonly used antibacterial agents
| Antibacterial agents |
Escherichia coli (n = 74) |
Klebsiella pneumoniae (n = 58) |
Acinetobacter spp (n = 10) |
Pseudomonas aeruginosa(n = 9) |
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| Strains | Drug resistance rate (%) | Strains | Drug resistance rate (%) | Strains | Drug resistance rate (%) | Strains | Drug resistance rate (%) | |
| Ampicillin/sulbactam | 30 | 40.5 | 23 | 39.7 | 8 | 80 | 7 | 77.8 |
| Piperacillin/tazobactam | 7 | 9.4 | 8 | 13.8 | 6 | 60 | 3 | 33.3 |
| Ceftriaxone | 18 | 24.3 | 20 | 34.5 | 8 | 80 | 9 | 100 |
| Cefepime | 31 | 41.9 | 15 | 25.9 | 7 | 70 | 3 | 33.3 |
| Cefoperazone/sulbactam | 12 | 16.2 | 17 | 29.3 | 4 | 40 | 3 | 33.3 |
| Ceftazidime | 33 | 44.6 | 17 | 29.3 | 7 | 70 | 3 | 33.3 |
| Amikacin | 5 | 6.8 | 3 | 5.1 | 2 | 20 | 1 | 11.1 |
| Gentamicin | 37 | 50 | 12 | 20.7 | 6 | 60 | 2 | 22.2 |
| Ciprofloxacin | 37 | 50 | 16 | 27.6 | 7 | 70 | 3 | 33.3 |
| Aztreonam | 26 | 35.1 | 13 | 22.4 | 6 | 60 | 4 | 44.4 |
| Imipenem | 1 | 1.3 | 7 | 12.1 | 6 | 60 | 3 | 33.3 |
| Meropenem | 2 | 2.7 | 4 | 6.9 | 7 | 70 | 2 | 22.2 |