TABLE 4.
Comparison of Etest MICs and broth microdilution MICs of imipenem, meropenem, and ertapenem for isolates of RGM and Nocardia
| Species or complex and drug | No. of isolates tested | % error |
||
|---|---|---|---|---|
| Very major | Major | Minor | ||
| M. fortuitum | ||||
| Ertapenem | 22 | 5 | 0 | 0 |
| Meropenem | 22 | 0 | 0 | 86 |
| Imipenem | 22 | 0 | 5 | 36 |
| M. abscessus subsp. abscessus | ||||
| Ertapenem | 44 | 0 | 0 | 0 |
| Meropenem | 44 | 0 | 0 | 14 |
| Imipenem | 44 | 0 | 7 | 48 |
| M. chelonae | ||||
| Ertapenem | 13 | 0 | 0 | 0 |
| Meropenem | 12 | 0 | 0 | 0 |
| Imipenem | 12 | 0 | 0 | 75 |
| N. cyriacigeorgica | ||||
| Ertapenem | 10 | 0 | 0 | 10 |
| Meropenem | 10 | 0 | 0 | 20 |
| Imipenem | 11 | 0 | 36 | 18 |
| N. nova complex | ||||
| Ertapenem | 32 | 0 | 3 | 43 |
| Meropenem | 31 | 0 | 0 | 9 |
| Imipenem | 32 | 0 | 0 | 0 |
| N. brasiliensis | ||||
| Ertapenem | 13 | 0 | 0 | 31 |
| Meropenem | 13 | 0 | 8 | 31 |
| Imipenem | 13 | 0 | 0 | 8 |
| N. transvalensis complex | ||||
| Ertapenem | 12 | 33 | 8 | 17 |
| Meropenem | 12 | 8 | 8 | 42 |
| Imipenem | 12 | 8 | 0 | 25 |