- Methicillin-susceptible Staphylococcus aureus infection - Report #1
| Source: | decubitus on coccyx | |
| Gram stain report: | Many WBC’s; many Gram positive cocci in clusters seen in Figure 10 | |
| Organism: | Staphylococcus aureus Heavy growth |
|
| Antibiotic | MIC* | SENS** |
| Ampicillin/sulbactam | <4 | S |
| Cephalothin | <2 | S |
| Ciprofloxacin | <0.5 | S |
| Clindamycin | <0.5 | S |
| Erythromycin | <0.5 | S |
| Oxacillin | <2 | S* |
| Penicillin G | >16 | R |
| Tetracycline | <1 | S |
| Trimeth-sulfa | <10 | S |
| Vancomycin | <0.5 | S |
*MIC = the concentration of antibiotic that the organism is susceptible in micrograms. The rule of thumb is, if the physician can reach 2 - 4 times the concentration of the MIC levels in blood, then the antibiotic should reach proper tissue levels.
*Note: The antibiotic oxacillin is susceptible. This is not a MRSA.
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