Table 2.
Detection of carbapenemase-producing P. aeruginosa and A. baumannii by rCDM, mCIM, and sCIM.
| Species (n) | PCR and sequencing (n) | MIC of imipenem (mg/L) | rCDM | sCIM | mCIM | ||||
|---|---|---|---|---|---|---|---|---|---|
| ≥8 | ≤2 | + | – | + | – | + | – | ||
| P. aeruginosa (236) | KPC-2 (2) | 2 | 0 | 2 | 0 | 2 | 0 | 2 | 0 |
| IMP-4 (1) | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | |
| VIM-1 (20) | 20 | 0 | 20 | 0 | 20 | 0 | 20 | 0 | |
| VIM-2 (3) | 3 | 0 | 3 | 0 | 3 | 0 | 3 | 0 | |
| VIM-4 (12) | 12 | 0 | 11 | 1 | 12 | 0 | 11 | 1 | |
| None(198) | 158 | 40 | 0 | 198 | 0 | 198 | 0 | 198 | |
| A. baumannii (20) | OXA-23(20) | 20 | 0 | 0 | 20 | 20 | 0 | 0 | 20 |
+, positive; –, negative; rCDM, rapid carbapenemase detection method; sCIM, simplified carbapenem inactivation method; mCIM, modified carbapenem inactivation method; MIC, minimum inhibitory concentration.