Table 1.
Minimum inhibitory concentrations of various antibiotics and the rate of resistant K. pneumoniae isolates.
| Antibiotic | MIC Range | MIC50 | MIC90 | Number and % of Resistant Strains |
|---|---|---|---|---|
| amoxycillin-clavulanate | >128–>128 | >128 | >128 | 41/41 (100.0%) |
| piperacillin-tazobactam | 64–>128 | 128 | >128 | 29/41 (70.7%) |
| cefuroxime | >128–>128 | >128 | >128 | 41/41 (100.0%) |
| ceftazidime | 0.5–>128 | 128 | >128 | 40/41 (97.5%) |
| cefotaxime | 1–>128 | >128 | >128 | 40/41 (97.5%) |
| ceftriaxone | 0.5–>128 | 128 | >128 | 40/41 (97.5%) |
| Cefepime | 0.25–>128 | 64 | >128 | 29/41 (70.7%) |
| imipenem | 0.06–64 | 8 | 32 | 28/41 (68.2%) |
| meropenem | 0.06–64 | 16 | 64 | 29/41 (70.7%) |
| gentamicin | 0.25–>128 | 16 | >128 | 24/41 (58.5%) |
| amikacin | 8–>128 | 16 | 128 | 12/41 (29.3%) |
| ciprofloxacin | 0.25–>128 | 64 | >128 | 39/41 (95.1%) |
| colistin | 0.06–128 | 0.5 | 32 | 3/41 (7.3%) |