Hotobhaga
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38) An 11-year-old boy presents with fever and sore throat. A rapid-strep test confirms streptococcal pharyngitis. He is leaving for a summer camp in 2 days. In the past, he has had problem finishing the whole course of antibiotic treatment. Which of the following is the best treatment for his streptococcal pharyngitis?
A. A single dose of benzathine penicillin G intramuscularly
B. A single dose of ceftriaxone intramuscularly
C. A single dose of procaine penicillin G intramuscularly
D. Erythromycin orally for 5 days
E. Penicillin V orally for 5 days
Explanation:
The correct answer is
A. The treatment of choice for streptococcal pharyngitis is oral penicillin V for 10 days. However, the child in this clinical vignette is leaving town for a summer camp in 2 days. There is no way to monitor his compliance to the regimen if he is not with the family. Also, he has had a problem finishing his medicine in the past. A better regimen for him this time might be a single dose of an appropriate antibiotic agent. Among the above three choices, only benzathine penicillin G is the appropriate treatment for streptococcal pharyngitis. Benzathine penicillin G can be given as a single dose intramuscularly. It is a long-acting antibiotic and can complete the treatment. Intramuscular ceftriaxone (choice B) does not effectively eradicate streptococcal infection in the throat. Intramuscular procaine penicillin (choice C) is a short-acting penicillin. One dose of it does not eradicate streptococcal pharyngitis. Oral treatment for streptococcal pharyngitis requires a total regimen of 10 days. Both erythromycin (choice D) and penicillin V (choice E) are appropriate drugs. But again, a single intramuscular antibiotic is a better treatment for this patient.
what do you all think of this Q?
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USMLE preparation is all about discovery. Discovery of your own capabilities....Julia Perch MD (iprep)
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| elitoki
Forum Guru
Topics: 54
Posts: 508
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peni benza is most effective sigle dosis. 
the answer is A.
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| khorshid
Forum Guru
Topics: 32
Posts: 591
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I chose A too, it sounds the best option in this setting.
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| cirus
Forum Guru
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a is the ans here but my q is since when do we treat strept pharyngitis with a single dose
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| dr in trouble
Forum Guru
Topics: 62
Posts: 610
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what is the source of Q?
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