Table 2.
Susceptibility of R. mucosa to antibiotics
| Antibiotic | Amount (µg) | Breakpoint (mm) | Susceptibility |
|---|---|---|---|
| β-Lactams (penicillins and cephalosporins) | |||
| Ampicillin | 10 | 6 | Resistant |
| Ampicillin/sulbactam | 10/10 | 6 | Resistant |
| Piperacillin | 100 | 6 | Resistant |
| Piperacillin/tazobactam | 100/10 | 6 | Resistant |
| Cefazolin | 30 | 6 | Resistant |
| Cefuroxime | 30 | 6 | Resistant |
| Ceftriaxone | 30 | 40 | Sensitive |
| Ceftazidime | 10 | 6 | Resistant |
| Carbapenemes | |||
| Imipenem | 10 | 43 | Sensitive |
| Meropenem | 10 | 38 | Sensitive |
| Aminoglycosides | |||
| Gentamicin | 10 | 40 | Sensitive |
| Tobramicin | 10 | 42 | Sensitive |
| Amikacin | 30 | 48 | Sensitive |
| Fluorochinolones | |||
| Ciprofloxacin | 5 | 35 | Sensitive |
| Fosfomycin | 200 | 6 | Resistant |
| Sulfonamide | |||
| Trimethoprim/sulfamethoxazole | 1.25/23.75 | 22 | Sensitive |
| Tetracyclines | |||
| Tetracycline | 30 | 34 | Sensitive |
| Tigecycline | 15 | 37 | Sensitive |
| Polymyxines | |||
| Polymyxin B | 300 E | 20 | Sensitive |
Susceptibility to antibiotics was tested by incubation of bacteria together with antibiotic disks for 48 h on Mueller–Hinton agar and results were interpreted using the breakpoints for zone diameters of the European Committee on Antimicrobial Susceptibility Testing (EUCAST, http://www.eucast.org)