TABLE 3.
Summary of 17 discrepancies found at 24 h of incubation after first subculture
| Organism | Antimicrobial agent(s) | Test type | Discrepancy | Resolved with additional incubation |
|---|---|---|---|---|
| Vancomycin-resistant Enterococcus faecalis | Ampicillin | SBT | Skipping | Yes |
| Pseudomonas aeruginosa | Aminoglycoside | SBT | Paired SBT results did not agree | Yes |
| Enterococcus faecalis | Ampicillin | MBC | Skipping | Yes |
| Staphylococcus aureus | Oxacillin | SBT | Paired SBT results did not agree | Yes |
| Staphylococcus haemolyticus | Vancomycin | MBC | Paired MBC results did not agree | Yes |
| Staphylococcus aureus | Oxacillin | MBC | Paired MBC results did not agree | Yes |
| Streptococcus anginosus | Penicillin | SBT | Poor growth of organism at 24 h | Yes |
| Staphylococcus aureus | Oxacillin | MBC | Paired MBC results did not agree | Yes |
| Staphylococcus aureus | Vancomycin | SBT | Paired SBT results did not agree | Yes |
| MRSAa | Vancomycin | MBC | Skipping | Yes |
| Pseudomonas aeruginosa | Gentamicin | MBC | Paired MBC results did not agree | No |
| Enterococcus faecalis | Ampicillin, streptomycin, rifampin, and vancomycin | SBT | Paired SBT results did not agree | Yes |
| Enterococcus faecalis | Ampicillin, streptomycin, rifampin, and vancomycin | SBT | Skipping | Yes |
| Pseudomonas aeruginosa | Aztreonam | MIC and MBC | Paired MIC and MBC results did not agree | Yes |
| Staphylococcus aureus | Cefazolin | MIC and MBC | Paired MIC results did not agree | Yes |
| Staphylococcus aureus | Oxacillin | MIC and MBC | Paired MIC and MBC results did not agree | Yes |
| Staphylococcus aureus | Vancomycin | MBC | Skipping | Yes |
a
MRSA, methicillin-resistant Staphylococcus aureus.