Table 1.
Overall Distribution of MICs of Various Antimicrobial Agents Against A. Baumannii (n=143) Strains
| Aminoglycosides | % Resistance | MIC (mg/mL) | Number of Isolates at MIC (µg/mL) of | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MIC50 | MIC90 | 0.125 | 0.25 | 0.5 | 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128 | 256 | ≥512 | ||
| Amikacin | 87.4 | 128 | ≥512 | – | – | – | – | – | 11 | – | 7 | – | 7 | 62 | 22 | 34 |
| Gentamycin | 86.7 | 64 | ≥512 | – | – | – | 9 | 5 | 5 | – | 13 | 11 | 44 | 24 | 7 | 25 |
| Imipenem | 92.3 | 16 | 32 | – | – | 6 | 5 | – | – | – | 71 | 56 | 5 | – | – | – |
| Ciprofloxacin | 93.7 | 16 | 64 | – | – | 5 | 4 | – | 1 | 60 | 16 | – | 53 | 1 | 3 | – |
| Piperacillin- Tazobactam | 92.3 | ≥128/4 | ≥128/4 | – | – | – | 1 | 6 | – | 4 | – | – | – | 3 | 129 | – |
| Ampicillin-Sulbactam | 93 | ≥128/64 | ≥128/64 | – | – | – | 1 | 6 | 2 | 1 | – | 3 | 2 | 15 | 113 | – |
| Ceftazidime | 92.3 | 256 | 256 | – | – | – | – | 5 | 1 | 5 | – | 3 | – | 3 | 126 | – |
| Cefepime | 92.3 | 64 | 256 | – | – | – | 5 | 1 | – | 5 | – | 10 | 65 | 23 | 34 | – |
| Sulfamethoxazole-trimethoprim | 80.5 | 4/76 | 128/2432 | – | 3 | 6 | 6 | 16 | 57 | 11 | 8 | – | 20 | 16 | – | – |
| Doxycycline | 54.1 | 16 | 32 | – | 5 | 11 | 22 | 14 | 8 | 6 | 53 | 11 | 13 | – | – | – |
| Colistin | 0.0 | 1 | 1 | – | 5 | 49 | 79 | 10 | – | – | – | – | – | – | – | – |
| Tigecycline | 0.0 | 1 | 2 | – | 4 | 18 | 54 | 67 | – | – | – | – | – | – | – | – |