nbme f1q1

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nbme f1q1

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ling
Forum Senior

Topics: 23
Posts: 46

03/24/07 - 06:48 PM

. A 3-year-old boy who is HIV positive is brought for a routine examination. His diet is appropriate for age. His medications include three antiretroviral drugs and trimethoprim-sulfamethoxazole for Pneumocystis carinii prophylaxis. Laboratory studies show:

Hemoglobin 8.6 g/dL
Mean corpuscular hemoglobin 38 pg/cell
Mean corpuscular hemoglobin concentration 30% Hb/cell
Mean corpuscular volume 101 μm3
Leukocyte count 5600/mm3
Segmented neutrophils 60% (many hypersegmented)
Bands 3%
Lymphocytes 37%
Red cell distribution width 21% (N=10–16)

Which of the following is most likely to have prevented this patient's anemia?

A
) Folic acid supplementation

B
) Iron supplementation

C
) Thyroid supplementation

D
) Vitamin B12 (cyanocobalamin) supplementation

E
) Monthly intravenous immune globulin therapy

robin082006
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