Table 2.
Number of P. aeruginosa isolates resistant to common antimicrobial agents in vitro and their respective clusters after PFGE typing
| Antibiotics | Distribution of resistant P. aeruginosa – PFGE clusters*
|
|||
|---|---|---|---|---|
| Cluster 1: CF resistance (n=6/16) | Cluster 2: CF resistance (n=5/11) | Cluster 3: CF resistance (n=2/2) and non-CF resistance (n=8/12) | Cluster 4: CF resistance (n=3/3) | |
| Ciprofloxacin | 3 | 4 | 6 | 2 |
| Amikacin | 2 | 4 | 4 | 2 |
| Gentamicin | 2 | 4 | 4 | 2 |
| Cefepime | 1 | 1 | 2 | 1 |
| Ceftazidime | 0 | 0 | 2 | 1 |
| Meropenem/imipenem | 0 | 0 | 8 (non-CF) | 0 |
| Piperacillin/tazobactam | 0 | 0 | 1 | 0 |
| Colistin | 1 | 0 | 0 | 0 |
Notes:
*
Some isolates resistant to ≥2 antibiotics.
Abbreviations: P. aeruginosa, Pseudomonas aeruginosa; PFGE, pulsed-field gel electrophoresis; CF, cystic fibrosis.