Table 5.
Antibiotic resistance patterns of Gram-negative bacteria isolated from patients with infections.
| Antibiotics | E. coli | Klebsiella spp. | Enterobacter spp. | P. aeruginosa | Acinetobacter spp. | S. maltophilia | Other NFB | Proteus spp. | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| R% | I% | S% | R% | I% | S% | R% | I% | S% | R% | I% | S% | R% | I% | S% | R% | I% | S% | R% | I% | S% | R% | I% | S% | |
| Ceftizoxime | 53.6 | 8.6 | 37.8 | 52.0 | 2.8 | 45.2 | 37.1 | 6.4 | 56.4 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 11.1 | 1.6 | 87.3 |
| Amikacin | 5.3 | 5 | 89.6 | 22.6 | 2.4 | 75.0 | 8.0 | 6.4 | 85.5 | 9.9 | 1.4 | 88.7 | 95.7 | 2.7 | 1.6 | 8.3 | 0 | 91.7 | 44.4 | 0 | 55.6 | 0 | 0 | 100 |
| Cefixime | 63.7 | 1.4 | 34.9 | 54.4 | 2.0 | 43.5 | 48.4 | 4.8 | 46.8 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 12.7 | 4.8 | 82.5 |
| Ciprofloxacin | 54.9 | 6.4 | 38.7 | 30.6 | 6.8 | 62.5 | 14.5 | 4.8 | 80.6 | 15.5 | 0 | 84.5 | 98.9 | 0.5 | 0.5 | 4.2 | 0 | 95.8 | 11.1 | 22.2 | 66.7 | 28.6 | 6.3 | 65.1 |
| Nitrofurantoin | 18.7 | 12.0 | 69.2 | 68.5 | 23.0 | 8.5 | 69.3 | 6.4 | 24.2 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| Gentamicin | 27.0 | 0.9 | 72.1 | 28.2 | 0.4 | 71.3 | 21.0 | 0 | 79.0 | 9.9 | 0.7 | 89.4 | 94.6 | 1.1 | 4.3 | 8.3 | 0 | 91.7 | 44.4 | 0 | 55.6 | 6.3 | 0 | 93.6 |
| Nalidixic acid | 69.8 | 2.7 | 27.5 | 35.1 | 10.1 | 54.8 | 35.5 | 8.0 | 56.4 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 52.4 | 0 | 47.6 |
| Ceftriaxone | 64.0 | 0.9 | 35 | 37.1 | 5.6 | 57.3 | 32.3 | 6.4 | 61.3 | NA | NA | NA | 69.7 | 1.6 | 28.6 | NA | NA | NA | NA | NA | NA | 7.9 | 11.1 | 80.9 |
| SXT | 66.2 | 0.3 | 33.5 | 47.2 | 4.0 | 48.8 | 30.6 | 3.2 | 66.1 | NA | NA | NA | 96.8 | 1.6 | 1.6 | 8.3 | 0 | 91.7 | 27.8 | 0 | 72.2 | 65.1 | 0 | 34.9 |
| Norfloxacin | 56.8 | 3.2 | 40 | 27.8 | 1.2 | 71.0 | 21.0 | 0 | 79.0 | 27.5 | 0 | 72.5 | NA | NA | NA | NA | NA | NA | NA | NA | NA | 23.8 | 0 | 76.2 |
| Tetracycline | 63.7 | 0.6 | 35.7 | 38.3 | 12.1 | 49.6 | 33.9 | 9.7 | 56.4 | NA | NA | NA | 73.0 | 3.2 | 23.8 | 16.7 | 0 | 83.3 | 55.6 | 5.6 | 38.9 | NA | NA | NA |
| Chloramphenicol | 24.7 | 8.6 | 66.6 | 32.7 | 4.0 | 63.3 | 24.2 | 9.7 | 66.1 | NA | NA | NA | NA | NA | NA | 0 | 8.3 | 91.7 | 61.1 | 22.2 | 16.7 | 41.3 | 17.5 | 41.3 |
| Imipenem | 41.0 | 20.0 | 39.0 | 40.3 | 16.9 | 42.7 | 25.8 | 8.0 | 66.1 | 15.5 | 9.1 | 75.3 | 99.5 | 0 | 0.5 | 66.7 | 8.3 | 25.0 | 50.0 | 16.7 | 33.3 | NA | NA | NA |
| Colistin | 6.8 | 0 | 93.2 | 1.2 | 0 | 98.8 | 6.4 | 0 | 93.5 | 0 | 0 | 100 | 0 | 0 | 100 | 12.5 | 0 | 87.5 | 44.4 | 0 | 55.6 | NA | NA | NA |
R: resistant, I: intermediate, S: sensitive, SXT: Co-Trimoxazole, NFB: nonfermentative bacteria, and NA: not applicable.