Rapid determination of ceftazidime/avibactam susceptibility of carbapenemase-producing Enterobacterales directly from blood cultures: a comparative evaluation of EUCAST disc diffusion RAST and direct Etest® RAST.

EUCAST RAST was accurate to determine ceftazidime/avibactam susceptibility of carbapenemase-producing K. pneumoniae and E. coli directly from BC bottles. DET-RAST has the advantage of determining MIC values and avoiding ATU results but showed to be an accurate method only with reading at 8 h.