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An elderly patient has pneumococcal pneumonia. She has no known drug allergies. Which of the following antibiotics would be most appropriate?



A. Chloramphenicol
B. Cefotaxime
C. Erythromycin
D. Penicillin
E. Vancomycin

This question is part of

USMLE microbiology prt 7
Asked by Ewing, Last updated: Feb 17, 2020

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1 Answer

John Smith

John Smith

Answered Sep 09, 2016

Penicillin-the correct answer is d. penicillin remains the first-line drug of choice for pneumococcal pneumonia, except inthose patients with penicillin allergy and in the relatively few areas in which pneumococcal strains with high-levelpenicillin resistance are found. alternative therapies include erythromycin and vancomycin.chloramphenicol (choice a) is not usually used for pneumococcal pneumonia.the third generation cephalosporin cefotaxime (choice b) is not usually used for pneumococcal pneumonia.erythromycin (choice c) is a good alternative therapy for pneumococcal pneumonia, but is usually used onlywhen a penicillin allergy is present.vancomycin (choice e) is not the first-line therapy, but it is a good alternative in patients allergic to penicillin orwhen high-level penicillin resistance (relatively uncommon) is present.
 

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