Table 1.
Antimicrobial resistance of Escherichia coli isolates.
| Antimicrobial Agent | MIC Breakpoint (µg/mL) | Escherichia coli Isolates by Resistance, n (%) | ||
|---|---|---|---|---|
| Total (n = 30) | ESBL (n = 13) | Non-ESBL (n = 17) | ||
| Ampicillin | ≥32 | 27 (90) | 13 (100) | 14 (82) |
| Piperacillin-tazobactam | ≥128/4 | 1 (3) | 0 (0) | 1 (6) |
| Cephalothin | ≥64 | 20 (67) | 13 (100) | 7 (41) |
| Cefuroxime | ≥64 | 16 (53) | 13 (100) | 3 (18) |
| Cefotaxime | ≥64 | 13 (43) | 13 (100) | 0 (0) |
| Ceftazidime | ≥64 | 13 (43) | 13 (100) | 0 (0) |
| Cefepime | ≥64 | 13 (43) | 13 (100) | 0 (0) |
| Amikacin | ≥16 | 2 (7) | 1 (8) | 1 (6) |
| Gentamicin | ≥16 | 8 (27) | 5 (38) | 3 (18) |
| Nalidixic acid | ≥32 | 17 (57) | 5 (38) | 12 (71) |
| Ciprofloxacin | ≥4 | 23 (77) | 11 (85) | 12 (71) |
| Trimethoprim-sulfamethoxazole | ≥320 | 19 (63) | 10 (77) | 9 (53) |
ESBL: extended-spectrum β-lactamase; MIC: minimum inhibitory concentration.