TABLE 5.
Disk diffusion results compared with reference broth microdilution MICs for 160 mucoid isolates of P. aeruginosa from CF patients
| Antimicrobial(s)a | No. (%) of errors
|
No. of isolates tested | Correlation coefficient (r) | |||
|---|---|---|---|---|---|---|
| Very major | Major | Minor | Total | |||
| Amikacin | 0 | 1 (0.7) | 33 (22.6) | 34 (23.3) | 146 | −0.90 |
| Gentamicin | 0 | 0 | 38 (26.0) | 38 (26.0) | 146 | −0.87 |
| Tobramycin | 0 | 1 (0.7) | 18 (12.3) | 19 (13.0) | 146 | −0.85 |
| Ticarcillin | 1 (0.7) | 7 (4.8) | 8 (5.5) | 146 | −0.88 | |
| Ticarcillin-clavulanate | 0 | 9 (6.2) | 9 (6.2) | 146 | −0.89 | |
| Piperacillin | 1 (0.7) | 5 (3.4) | 6 (4.1) | 146 | −0.79 | |
| Piperacillin-tazobactam | 0 | 3 (2.1) | 3 (2.1) | 146 | −0.79 | |
| Ceftazidime | 2 (1.7) | 1 (0.7) | 27 (18.5) | 30 (20.5) | 146 | −0.80 |
| Aztreonam | 0 | 1 (0.7) | 43 (29.5) | 44 (30.1) | 146 | −0.81 |
| Ciprofloxacin | 0 | 0 | 34 (23.3) | 34 (23.3) | 146 | −0.81 |
| Imipenem | 0 | 0 | 14 (9.6) | 14 (9.6) | 146 | −0.82 |
| Meropenem | 1 (0.7) | 0 | 17 (11.6) | 18 (12.3) | 146 | −0.73 |
| Allb | 5 (0.3) | 28 (1.6) | 224 (12.8) | 257 (14.7) | 1,752 | −0.83 |
a
Ticarcillin-clavulanate, 2 μg/ml; piperacillin-tazobactam, 4 μg/ml.
b
Mean values.