Combined Activity of Polymyxin B with Meropenem Against 110 Strains of Multidrug-resistant Acinetobacter baumannii / 中华医院感染学杂志

OBJECTIVE To evaluate the antibiotic effects of polymyxin B combined with meropenem against 110 strains of multidrug-resistant Acinetobacter baumannii.METHODS The protocol was designed by checkerboard method and the MICs of polymyxin B combined with meropenem against the 110 strains of A.baumannii were determined by broth dilution method,the FIC index was calculated according to MIC results.RESULTS The percentage of the FIC indexes less than 0.5,from 0.5 to 1,from 1 to 2 and more than 2 were 98%,2%,0% and 0%,respectively.CONCLUSIONS When polymyxin B combined with meropenem against 110 strains of A.baumannii the synergism and additivity are the main,there are no autonomy and antagonism.