Extended spectrum beta lactamases (ESBLs) are characterized by activity against all except.

A. Penicillinases

B. Cephalosporinases

C. Oxyimino-cephalosporinases

D. Carbapenems

Correct Answer: Carbapenems

Description: Ans. (D) Carbapenems(Ref: Katzung 10/e p739)Carbapenems like imipenem are the only beta lactams reliably efficacious against ESBL producing bacteria.

Category: Pharmacology

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