TABLE 1.
Broth microdilution MIC50s and MIC90s of each agent alone
| Group (n) | MIC (μg/ml)a
|
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Levofloxacin
|
Cefpirome
|
Ceftazidime
|
Gentamicin
|
Meropenem
|
||||||
| 50% | 90% | 50% | 90% | 50% | 90% | 50% | 90% | 50% | 90% | |
| Susceptible (30)b | 0.5 | 4 | 8 | 16 | 2 | 8 | 2 | 4 | 1 | 2 |
| Resistant | ||||||||||
| Ceftazidime (26) | 2 | 4 | 64 | >128 | 128 | >128 | 0.5 | 4 | 1 | 4 |
| Gentamicin (21) | 8 | >32 | 8 | 16 | 8 | 8 | 32 | >64 | 1 | 4 |
| Meropenem (24) | 1 | 2 | 8 | 8 | 4 | 8 | 1 | 4 | 8 | 16 |
| Miscellaneous (23)c | 4 | 32 | 128 | >128 | 128 | >128 | 32 | 64 | 4 | 32 |
a
50% and 90%, MIC50R and MIC90, respectively.
b
Susceptible to cephalosporins, gentamicin, and meropenem.
c
Resistant to cephalosporins, gentamicin, and meropenem (n = 10); resistant to gentamicin and cephalosporins and susceptible to meropenem (n = 12); gentamicin susceptible, resistant to cephalosporins and meropenem (n = 1).