摘要:
The invention relates to a method for discriminating bacteria that are resistant to carbapenems according to whether or not they develop resistance by membrane imperviousness, said method comprising the following steps: providing a bacteria strain that is resistant to at least one carbapenem; assessing the sensitivity of said bacterial strain with regard to at least one indicator carbapenem, in the absence of polymyxin B nonapeptide (PMBN) as well as in the presence of PMBN in a non-inhibiting concentration; and establishing a prognosis of resistance by membrane imperviousness in the case that the presence of PMBN makes it possible significantly to increase the sensitivity of said bacterial strain with regard to at least one indicator carbapenem used.