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Pharmacology Chemotherapy: General Principles ca569af3

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

A
Penicillinases
B
Cephalosporinases
C
Oxyimino-cephalosporinases
D
Carbapenems
High-Yield Explanation
Ans. (D) Carbapenems(Ref: Katzung 10/e p739)Carbapenems like imipenem are the only beta lactams reliably efficacious against ESBL producing bacteria.
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