Synergy of combinations of vancomycin, gentamicin, and rifampin against methicillin-resistant, coagulase-negative staphylococci

Authors:
  • FLF D Lowy
    F D Lowy
  • DCD S Chang
    D S Chang
  • PLP R Lash
    P R Lash

Abstract
The activity of combinations of vancomycin (2 or 10 micrograms/ml), gentamicin (0.3 micrograms/ml), and rifampin (0.03 micrograms/ml) against methicillin-resistant, coagulase-negative staphylococcal isolates was determined by the time-kill method. Combinations of rifampin with gentamicin or with vancomycin 2 micrograms/ml demonstrated enhanced killing against 13 of 17 and 13 of 25 strains, respectively. However, rifampin-resistant strains were selected with the latter combination in the remaining 12 of 25 studies.