Table 3.
Antimicrobial resistance of the A. baumannii isolates resistant and susceptible to carbapenems
| Antimicrobial agent | Overall resistance (n = 237) No. (%) | Carbapenem-resistant A. baumannii (n = 222) No. (%) |
Carbapenem-susceptibileA. baumannii (n = 15) No. (%) |
P value |
|---|---|---|---|---|
| Ampicillin-sulbactam | 140 (59.1%) | 136 (61.3) | 4 (26.7) | P = 0.008 |
| Piperacillin-tazobactam | 233 (98.3%) | 222 (100) | 11 (73.3) | P < 0.001 |
| Ceftazidime | 233 (98.3%) | 222 (100) | 11 (73.3) | P < 0.001 |
| Cefepime | 233 (98.3%) | 222 (100) | 11 (73.3) | P < 0.001 |
| Imipenem | 219 (92.4%) | 219 (98.6) | 0 (0) | P < 0.001 |
| Meropenem | 222 (93.7%) | 222 (100) | 0 (0) | P < 0.001 |
| Amikacin | 217 (91.6%) | 209 (94.1) | 8 (53.3) | P < 0.001 |
| Gentamicin | 220 (92.8%) | 210 (94.6) | 10 (66.7) | P < 0.001 |
| Tobramycin | 163 (68.8%) | 159 (71.6) | 4 (26.7) | P = 0.000 |
| Ciprofloxacin | 231 (97.5%) | 221 (99.5) | 10 (66.7) | P < 0.001 |
| Levofloxacin | 226 (95.4%) | 217 (97.7) | 9 (60) | P < 0.001 |
| Trimethoprim-sulfamethoxazole | 209 (88.2%) | 202 (91) | 6 (40) | P < 0.001 |
| Tetracycline | 222 (93.7%) | 214 (96.4) | 8 (53.3) | P < 0.001 |
| Tigecycline | 59 (24.9%) | 58 (26.1) | 1 (6.7) | P = 0.092 |
| Colistin | 10 (4.3%) | 10 (4.5) | 0 (0) | P = 0.401 |