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38.5 A 68-year-old male presents from a nursing home with fever, increased urinary frequency and urgency, and mental status changes. He has a penicillin allergy of anaphylaxis. Which of the following β-lactams is the most appropriate choice for gram-negative coverage of this patient's urinary tract infection?A. Cefepime.B. Ertapenem.C. Aztreonam.D. Ceftaroline.
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