NAPLEX Infectious Diseases IV Questions with Correct Answers
(Grade A+)
Question 1: When would a patient be considered immunocompromised?
Answer: HIV with CD4 <200; systemic steroids e14d with prednisone e20mg/d or e2mg/kg/d; asplenia;
autoimmune/SOT immunosuppressants; chemo with ANC <500
Question 2: PJP/PCP primary prophylaxis indications
Answer: CD4 <200
Question 3: PJP/PCP primary ppx
Answer: Bactrim DS or SS QD; Bactrim DS 3x/wk; Dapsone (+ pyrimethamine + leucovorin); Atovaquone
(+ pyrimethamine + leucovorin); inhaled pentamidine
Question 4: When can PJP/PCP primary ppx be stopped?
Answer: CD4 >200 on ART x3mo
Question 5: What should be used for PJP/PCP primary ppx in pts with sulfa allergies?
Answer: Dapsone (+ pyrimethamine + leucovorin) or atovaquone (+ pyrimethamine + leucovorin) or
inhaled pentamidine
Question 6: What should be used for PJP/PCP primary ppx in pts with G6PD deficiency?
Answer: atovaquone or pentamidine
Question 7: Toxoplasma gondii primary ppx indications
Answer: CD4 <100 and IgG positive
Question 8: Toxoplasma gondii primary ppx
Answer: Bactrim DS or SS QD or 3x/wk; Dapsone + pyrimethamine + leucovorin; atovaquone (+
pyrimethamine + leucovorin)
Question 9: Can dapsone monotherapy be used for Toxoplasma ppx?
Answer: no, need pyrimethamine and leucovorin
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(Grade A+)
Question 1: When would a patient be considered immunocompromised?
Answer: HIV with CD4 <200; systemic steroids e14d with prednisone e20mg/d or e2mg/kg/d; asplenia;
autoimmune/SOT immunosuppressants; chemo with ANC <500
Question 2: PJP/PCP primary prophylaxis indications
Answer: CD4 <200
Question 3: PJP/PCP primary ppx
Answer: Bactrim DS or SS QD; Bactrim DS 3x/wk; Dapsone (+ pyrimethamine + leucovorin); Atovaquone
(+ pyrimethamine + leucovorin); inhaled pentamidine
Question 4: When can PJP/PCP primary ppx be stopped?
Answer: CD4 >200 on ART x3mo
Question 5: What should be used for PJP/PCP primary ppx in pts with sulfa allergies?
Answer: Dapsone (+ pyrimethamine + leucovorin) or atovaquone (+ pyrimethamine + leucovorin) or
inhaled pentamidine
Question 6: What should be used for PJP/PCP primary ppx in pts with G6PD deficiency?
Answer: atovaquone or pentamidine
Question 7: Toxoplasma gondii primary ppx indications
Answer: CD4 <100 and IgG positive
Question 8: Toxoplasma gondii primary ppx
Answer: Bactrim DS or SS QD or 3x/wk; Dapsone + pyrimethamine + leucovorin; atovaquone (+
pyrimethamine + leucovorin)
Question 9: Can dapsone monotherapy be used for Toxoplasma ppx?
Answer: no, need pyrimethamine and leucovorin
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