TABLE 2.
Distribution of MPC/MIC ratio among all strains tested
| Organism (no. of strains) | Drug | No. of strains with MPC/MIC ratios of: |
|||||
|---|---|---|---|---|---|---|---|
| 1 | 2 | 4 | 8 | 16 | >16 | ||
| Acinetobacter baumannii (25) | Doripenem | 0 | 15 | 6 | 2 | 2 | 0 |
| Imipenem | 0 | 11 | 9 | 1 | 4 | 0 | |
| Meropenem | 0 | 8 | 12 | 1 | 4 | 0 | |
| Pseudomonas aeruginosa (25) | Doripenem | 0 | 2 | 3 | 7 | 9 | 4 |
| Imipenem | 0 | 1 | 5 | 7 | 9 | 3 | |
| Meropenem | 0 | 0 | 4 | 7 | 6 | 8 | |
| Escherichia coli (25) | Doripenem | 0 | 14 | 8 | 2 | 1 | 0 |
| Ertapenem | 0 | 3 | 11 | 2 | 7 | 2 | |
| Imipenem | 0 | 7 | 14 | 4 | 0 | 0 | |
| Meropenem | 0 | 13 | 9 | 1 | 1 | 1 | |
| Klebsiella pneumoniae (25) | Doripenem | 1 | 11 | 4 | 1 | 1 | 7 |
| Ertapenem | 0 | 8 | 12 | 5 | 0 | 0 | |
| Imipenem | 2 | 8 | 10 | 2 | 1 | 2 | |
| Meropenem | 1 | 8 | 6 | 6 | 2 | 2 | |
| Total strains (100) | Doripenem | 1 | 42 | 21 | 12 | 13 | 11 |
| Ertapenema | 0 | 11 | 23 | 7 | 7 | 2 | |
| Imipenem | 2 | 27 | 38 | 14 | 14 | 5 | |
| Meropenem | 1 | 29 | 31 | 15 | 13 | 11 | |
a
A. baumannii and P. aeruginosa were not included; a total of 50 strains were tested.