If a patient has a sulfa drug allergy, which antibiotic is recommended as an alternative in toxoplasmosis treatment?

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Study for the NBEO Part II TMOD Exam. Prepare with flashcards and multiple choice questions, each with hints and explanations. Get ready for your exam!

Multiple Choice

If a patient has a sulfa drug allergy, which antibiotic is recommended as an alternative in toxoplasmosis treatment?

Explanation:
When treating toxoplasmosis in a patient with a sulfa allergy, sulfadiazine cannot be used, so the recommended alternative partner to pyrimethamine is clindamycin. The standard regimen pairs pyrimethamine with a second agent to block parasite folate metabolism, and leucovorin is given to reduce bone marrow toxicity from pyrimethamine. Replacing sulfadiazine with clindamycin provides an effective anti-Toxoplasma combination while avoiding the sulfonamide. Doxycycline, ciprofloxacin, and amoxicillin do not provide the same proven activity against Toxoplasma gondii in this treatment context.

When treating toxoplasmosis in a patient with a sulfa allergy, sulfadiazine cannot be used, so the recommended alternative partner to pyrimethamine is clindamycin. The standard regimen pairs pyrimethamine with a second agent to block parasite folate metabolism, and leucovorin is given to reduce bone marrow toxicity from pyrimethamine. Replacing sulfadiazine with clindamycin provides an effective anti-Toxoplasma combination while avoiding the sulfonamide. Doxycycline, ciprofloxacin, and amoxicillin do not provide the same proven activity against Toxoplasma gondii in this treatment context.

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