TABLE 2.
Activities of antibiotics against CR-PA isolates
| Antibiotic | MIC (μg/ml)a | No. of isolates resistant/totala (%) |
|---|---|---|
| Piperacillin | >64 | 9/42 (21) |
| Ticarcillin | >64 | 12/42 (28.5) |
| Ceftazidime | >8 | 12/42 (28.5) |
| Aztreonam | >8 | 14/42 (33) |
| Gentamicin | >4 | 26/42 (62) |
| Tobramycin | >4 | 23/42 (55) |
| Amikacin | >16 | 8/42 (19) |
| Ciprofloxacin | ≥2 | 25/42 (59.5) |
| Imipenem | ≥8 | 42/42 (100) |
| Meropenem | ≥8 | 25/42 (59.5) |
a
The number and percentage of resistant isolates were defined according to NCCLS nonsusceptibility breakpoints and therefore include both the intermediate and resistant categories.