Table 1

Carbapenem β-lactamases

β-Lactamase
Organisms

Class A: KPC 1 to 4
Klebsiella, Escherichia coli, Enterobacter, Salmonella, Pseudomonas
Class B: metallo-β-lactamases
Pseudomonas, Acinetobacter, Enterobacter, E. coli, Shigella, Serratia
Class C: AmpC-like
Klebsiella, E. coli, Enterobacter, Pseudomonas, Acinetobacter
Class D: oxacillinases
Pseudomonas, Acinetobacter, Enterobacter, Serratia

KPC, Klebsiella pneumoniae carbapenemase.

Rahal Critical Care 2008 12(Suppl 4):S5   doi:10.1186/cc6821