Table 3.
Resistance rates of dominant gram-negative bacilli to antimicrobial drugs in bile cultures
| Antimicrobial agent |
Escherichia coli (n = 370) |
Klebsiella pneumoniae (n = 149) |
||
|---|---|---|---|---|
| n | % | n | % | |
| Amoxicillin/clavulanic acid | 93 | 25.14 | 31 | 20.81 |
| Amikacin | 19 | 5.14 | 15 | 10.07 |
| Ampicillin | 204 | 55.14 | 77 | 51.68 |
| Aztreonam | 167 | 45.14 | 64 | 42.95 |
| Ceftazidime | 115 | 31.08 | 55 | 36.91 |
| Cefazolin | 303 | 81.89 | 112 | 75.17 |
| Ciprofloxacin | 222 | 60.00 | 75 | 50.34 |
| Ceftriaxone | 204 | 55.14 | 79 | 53.02 |
| Cefuroxime | 229 | 61.89 | 82 | 55.03 |
| Ampicillin/sulbactam | 159 | 42.97 | 60 | 40.27 |
| Cefepime | 96 | 25.95 | 34 | 22.82 |
| Gentamicin | 181 | 48.92 | 75 | 50.34 |
| Imipenem | 4 | 1.08 | 4 | 2.68 |
| Tobramycin | 7 | 1.89 | 0 | 0.00 |
| SMZ/TMP | 204 | 55.14 | 79 | 53.02 |
| Piperacillin/tazobactam | 26 | 7.03 | 30 | 20.13 |
| Ertapenem | 4 | 1.08 | 0 | 0.00 |
| Tigecycline | 0 | 0.00 | 0 | 0.00 |
| Ciprofloxacin | 222 | 60.00 | 60 | 40.27 |
| Cefoperazone/sulbactam | 41 | 11.08 | 21 | 14.09 |
| Cefotaxime | 248 | 67.03 | 86 | 57.72 |
| Meropenem | 7 | 1.89 | 6 | 4.03 |
| ESBLs | 163 | 44.05 | 58 | 38.93 |
SMZ/TMP = sulfamethoxazole/trimethoprim, ESBLs = extended-spectrum beta-lactamases.