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 | |