Medical Definition of configuration. 1  1a: relative arrangement of parts or elementsb: the stable structural makeup of a chemical compound especially with reference to the space relations of the constituent atoms. 2  2: gestalt personality configuration.
Infections with multi-drug resistant E. coli, which is also known as ESBL (extended spectrum beta-lactamase), have been assumed to be a hospital phenomenon.
The designation extra drug-. resistant is applied to those organisms susceptible to fewer than two. antimicrobials. The Enterobacteriaceae have become resistant to third-generation. cephalosporins due to the production of extended spectrum beta-. lactamase (ESBL), leading to difficulty in treatment.