Research Article
Investigation of Antibiotic Resistance and Biofilm Formation in Clinical Isolates of Klebsiella pneumoniae
Table 3
Comparison of biofilm formation in antibiotic-resistant K. pneumoniae strains.
| | Antibiotics | Strength of biofilm formation | | Number | Negative | Poor | Moderate | Strong | value |
| | Ampicillin-sulbactam | Resistant | 54 | 10 | 17 | 15 | 12 | 0.038 | | Susceptible | 8 | 5 | 2 | 0 | 1 |
| | Cefotaxime | Resistant | 12 | 4 | 5 | 0 | 3 | <0.001 | | Susceptible | 1 | 0 | 1 | 0 | 0 |
| | Ceftazidime | Resistant | 45 | 10 | 15 | 11 | 9 | <0.001 | | Susceptible | 11 | 5 | 4 | 1 | 1 |
| | Ceftriaxone | Resistant | 11 | 4 | 2 | 2 | 3 | <0.001 | | Susceptible | 1 | 1 | 0 | 0 | 0 |
| | Piperacillin-tazobactam | Resistant | 45 | 11 | 20 | 7 | 7 | <0.001 | | Susceptible | 3 | 1 | 2 | 0 | 0 |
| | Tobramycin | Resistant | 41 | 8 | 16 | 8 | 9 | 0.035 | | Susceptible | 7 | 5 | 1 | 1 | 0 |
| | Ciprofloxacin | Resistant | 62 | 14 | 19 | 17 | 12 | <0.001 | | Susceptible | 14 | 5 | 7 | 0 | 2 | |
| | Levofloxacin | Resistant | 35 | 9 | 11 | 10 | 5 | <0.001 | | Susceptible | 6 | 3 | 3 | 0 | 0 |
| | Trimethoprim-sulfamethoxazole | Resistant | 8 | 4 | 5 | 0 | 3 | <0.001 | | Susceptible | 15 | 5 | 4 | 5 | 1 |
| | Imipenem | Resistant | 39 | 9 | 15 | 10 | 5 | <0.001 | | Susceptible | 22 | 10 | 7 | 1 | 4 |
| | Meropenem | Resistant | 36 | 8 | 14 | 9 | 5 | <0.001 | | Susceptible | 15 | 6 | 5 | 1 | 3 |
| | Gentamicin | Resistant | 14 | 3 | 8 | 2 | 1 | <0.001 | | Susceptible | 7 | 3 | 2 | 0 | 2 |
| | Amikacin | Resistant | 44 | 5 | 16 | 10 | 13 | 0.024 | | Susceptible | 19 | 10 | 5 | 1 | 3 |
| | Nitrofurantoin | Resistant | 4 | 3 | 1 | 0 | 0 | <0.001 | | Susceptible | 3 | 2 | 1 | 0 | 0 |
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