TABLE 3.
Distribution of MIC90s and MIC50s for A. baumannii IC II, A. baumannii non-IC II, and non-baumannii Acinetobacter species isolates
| Antimicrobial agent(s) | MIC range (μg/ml)a | Value(s) (μg/ml) for isolates in indicated group |
|||||
|---|---|---|---|---|---|---|---|
| MIC90 |
MIC50 |
||||||
| IC II (n = 245b) | Non-IC II (n = 400) | Non-baumannii (n = 221) | IC II (n = 245) | Non-IC II (n = 400) | Non-baumannii (n = 221) | ||
| Piperacillin-tazobactam | ≤8/4 to ≥512/4 | 256/4 | ≤8/4 | ≤8/4 | ≤8/4 | ≤8/4 | ≤8/4 |
| Ampicillin-sulbactam | ≤1/0.5 to 64/32 | 16/8 | 2/1 | 2/1 | 4/2 | ≤1/0.5 | ≤1/0.5 |
| Ceftazidime | ≤1 to ≥64 | ≥64 | 8 | 8 | ≥64 | 2 | 4 |
| Cefepime | ≤1 to ≥64 | ≥64 | 16 | 8 | 16 | 2 | 2 |
| Imipenem | ≤0.125 to 64 | 2 | 0.5 | 0.5 | 1 | 0.25 | 0.25 |
| Meropenem | ≤0.125 to 64 | 2 | 1 | 0.5 | 1 | 0.25 | 0.25 |
| Gentamicin | ≤1 to ≥128 | ≥128 | 8 | 2 | 16 | ≤1 | ≤1 |
| Amikacin | ≤2 to ≥256 | ≥256 | 8 | 4 | 4 | ≤2 | ≤2 |
| Levofloxacin | ≤0.25 to ≥64 | 16 | 8 | 0.5 | 8 | ≤0.25 | ≤0.25 |
| Ciprofloxacin | ≤0.25 to ≥64 | ≥64 | ≥64 | 1 | ≥64 | ≤0.25 | ≤0.25 |
| Minocycline | ≤1 to ≥64 | 16 | ≤1 | ≤1 | 4 | ≤1 | ≤1 |
| Colistin | ≤0.5 to ≥8 | ≤0.5 | ≤0.5 | 1 | ≤0.5 | ≤0.5 | ≤0.5 |
| Polymyxin B | ≤0.5 to ≥8 | ≤0.5 | ≤0.5 | 1 | ≤0.5 | ≤0.5 | ≤0.5 |
a
Distribution of MICs for all isolates.
b
n = number of isolates.