Interpretive standards and quality control limits for susceptibility tests with ampicillin-sulbactam combination disks.

AUTOR(ES)

Barry, A L

RESUMO

In vitro studies were performed to evaluate susceptibility tests with disks containing 10 micrograms of ampicillin plus 10 micrograms of sulbactam. Interpretive zone standards of less than or equal to 11 mm (resistant), 12 to 13 mm (intermediate), and greater than or equal to 14 mm (susceptible) are proposed. A nine-laboratory coordinated study was performed to establish tentative zone size limits for quality control of ampicillin-sulbactam disks. This included data with a new control strain selected to monitor performance of such combination disks.

Documentos Relacionados

• Proposed changes in interpretive criteria and potency of ampicillin and ampicillin-sulbactam disks for susceptibility tests.
• Interpretive standards and quality control guidelines for imipenem susceptibility tests with 10-micrograms disks.
• Optimal dilution susceptibility testing conditions, recommendations for MIC interpretation, and quality control guidelines for the ampicillin-sulbactam combination.
• Ciprofloxacin disk susceptibility tests: interpretive zone size standards for 5-microgram disks.
• Quality control parameters for susceptibility tests with 30-micrograms netilmicin disks.