Table 1.
Antimicrobial Susceptibility Testing Results: Percent of Isolates Susceptible to Antimicrobial Agents
| Agent | Percent of Isolates Susceptible to Antimicrobial Agents | ||||
|---|---|---|---|---|---|
| Carbapenem Susceptible (to All Tested Carbapenems) (N = 83) |
Carbapenem Resistanta Without KPC or VIM (N = 79)b |
Carbapenem Resistant With KPC (N = 20) |
Carbapenem Resistant With VIM (N = 15) |
All Isolates (N = 197) |
|
| Imipenem | 100 | 2.5 | 0.0 | 0.0 | 43.1 |
| Meropenem | 100 | 24.1 | 0.0 | 13.3 | 52.8 |
| Doripenem | 100 | 29.1 | 0.0 | 6.7 | 54.3 |
| Ticarcillin-clavulanate | 21.7 | 5.1 | 0.0 | 0.0 | 11.2 |
| Piperacillin-tazobactam | 94.0 | 34.2 | 0.0 | 0.0 | 53.3 |
| Aztreonam | 94.0 | 30.4 | 0.0 | 40.0 | 54.8 |
| Cefepime | 100 | 58.2 | 0.0 | 0.0 | 65.5 |
| Ceftazidime | 98.8 | 49.4 | 0.0 | 0.0 | 61.4 |
| Ceftazidime-avibactam | 100 | 74.7 | 50.0 | 0.0 | 77.2 |
| Ceftolozane-tazobactam | 100 | 77.2 | 0.0 | 0.0 | 73.1 |
| Gentamicin | 98.8 | 78.5 | 30.0 | 6.7 | 76.6 |
| Tobramycin | 100 | 82.3 | 30.0 | 0.0 | 78.2 |
| Amikacin | 100 | 96.2 | 60.0 | 6.7 | 87.3 |
| Ciprofloxacin | 97.6 | 36.7 | 15.0 | 0.0 | 57.4 |
| Levofloxacin | 97.6 | 34.2 | 15.0 | 0.0 | 56.3 |
| Colistin | 100 | 94.9 | 100.0 | 100.0 | 98.0 |
| Polymixin B | 100 | 96.2 | 100.0 | 100.0 | 98.5 |
aFor purposes of this study, an intermediate phenotype was considered as resistant.
bIncludes 54 isolates resistant to all 3 carbapenems, 19 resistant to imipenem only, 1 resistant to meropenem only, 4 resistant to meropenem and imipenem only, and 1 resistant to doripenem and meropenem only, N = 79.