Table 1.
Resistance patterns to various antimicrobial agents among different tested carbapenem-resistant Gram-negative bacterial isolates (n = 59)
| Antimicrobial class | Antimicrobial agent | Percentage of resistance (%) | ||||
|---|---|---|---|---|---|---|
| K. pneumoniae (n = 16) | P. aeruginosa (n = 15) | A. baumannii (n = 23) | E. coli (n = 5) | |||
| Carbapenems | Imipenem (10 µg) | 100 | 100 | 100 | 100 | |
| Meropenem (10 µg) | 100 | 100 | 100 | 100 | ||
| Ertapenem (10 µg) | 100 | ND | ND | 100 | ||
| β-lactam combination agents | Amoxicillin/clavulanic acid (20 μg/10 μg) | 100 | ND | ND | 100 | |
| Monobactam | Aztreonam (30 µg) | 100 | 100 | ND | 100 | |
| Cephalosporins | Cefoxitin (30 µg) | 100 | ND | ND | 100 | |
| Ceftriaxone (30 µg) | 100 | ND | 100 | 100 | ||
| Aminoglycosides | Amikacin (30 µg) | 93.75 | 100 | 91.3 | 0 | |
| Fluoroquinolones | Ciprofloxacin (5 µg) | 100 | 100 | 100 | 100 | |
| Levofloxacin (5 µg) | 100 | 100 | 100 | 100 | ||
| Folate pathway inhibitors | Trimethoprim/sulfamethoxazole (25 µg) | 93.75 | ND | 100 | 100 | |
| Tetracycline | Doxycycline (30 µg) | 93.75 | ND | 95.7 | 60 | |
| Glycylcyclines | Tigecycline (30 µg) | 93.75 | ND | ND | 40 | |