Table 1 MIC50 and MIC90 values and antimicrobial resistance of the 93 A. baumannii isolates
Antimicrobial agents | Breakpoint for resistance (mg/L) | % Resistant | Range (mg/L) | MIC50 (mg/L) | MIC90 (mg/L) |
|---|---|---|---|---|---|
Imipenem | ≥8 | 100 | 8–128 | 32 | 64 |
Meropenem | ≥8 | 99 | 4–128 | 32 | 64 |
Amikacin | ≥64 | 87 | 0.5 – > 512 | >512 | >512 |
Ciprofloxacin | ≥4 | 100 | 32 – > 512 | >512 | >512 |
Colistin | ≥4 | 5 | 0.125–16 | 0.5 | 1 |
Tigecycline | - | - | ≤0.125–16 | 1 | 8 |