Table 3.
Resistance Rates of Non-Fermentative Gram-Negative Bacilli to Antimicrobial Agents
| Antimicrobial Agent | ABA (n=6353) | PAE (n=4391) | PMA (n=1844) | PCE (n=403) | ||||
|---|---|---|---|---|---|---|---|---|
| R | S | R | S | R | S | R | S | |
| Piperacillin | 86.2 | 11.6 | 22.8 | 62.9 | – | – | – | – |
| Cefoperazone–sulbactam | 53.4 | 33.3 | 15.9 | 67.4 | 21.4 | 62.7 | 28.4 | 48.6 |
| Ampicillin–sulbactam | 64.9 | 28.0 | – | – | – | – | – | – |
| Piperacillin–tazobactam | 72.9 | 22.9 | 15.8 | 68.6 | – | – | 38.6 | 50.3 |
| Ceftazidime | 74.3 | 23.0 | 19.1 | 71.4 | 38.1 | 50.2 | 13.7 | 81.3 |
| Cefepime | 74.2 | 23.5 | 12.3 | 79.3 | 81.8 | 7.3 | 38.1 | 24.4 |
| Aztreonam | – * | – | 25.1 | 54.4 | – | – | 75.4 | 19.8 |
| Imipenem | 76.2 | 23.1 | 23.1 | 72.7 | – | – | 89.4 | 7.5 |
| Meropenem | 76.9 | 22.1 | 16.5 | 78.7 | – | – | 13.1 | 81.4 |
| Amikacin | 57.0 | 40.0 | 1.7 | 96.9 | – | – | NA | NA |
| Gentamicin | 67.1 | 31.1 | 5.6 | 90.3 | – | – | 83.6 | 12.1 |
| Ciprofloxacin | 76.1 | 23.5 | 13.1 | 81.5 | 23.0 | 49.2 | 14.2 | 67.6 |
| Levofloxacin | 60.6 | 26.3 | 14.1 | 77.5 | 7.9 | 88.1 | 14.0 | 77.8 |
| Trimethoprim–sulfamethoxazole | 44.7 | 55.1 | – | – | 8.5 | 91.4 | 11.6 | 88.1 |
| Colistin | 1.1 | 98.9 | 2.0 | 98.0 | 82.2 | 17.8 | – | – |
| Polymyxin B | 2.5 | 97.5 | 1.1 | 97.2 | 33.3 | 37.5 | – | – |
| Minocycline | 17.9 | 60.3 | – | – | 1.7 | 95.6 | 12.5 | 84.4 |
| Tigecycline | 1.8 | 88.9 | – | – | 7.4 | 87.0 | 16.3 | 66.3 |
Notes: *Intrinsic resistance.
Abbreviations: NA, not available; ABA, Acinetobacter baumannii; PAE, Pseudomonas aeruginosa; PMA, Stenotrophomonas maltophilia; PCE, Burkholderia cepacia.