3 A 50-year-old man with a history of chronic alcoholism has had increasing congestive heart failure...
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3 A 50-year-old man with a history of chronic alcoholism has had increasing congestive heart failure for the past year. Forthe past month, he has experienced increasing confusion, disorientation, and difficulty ambulating. Physical examination shows nystagmus, ataxia of gait, and decreased sensation in the lower extremities. Laboratory studies show hemoglobin, 13.1 g/dL; hematocrit, 39.3%; MCV, 90 μm³; platelet count, 269,300/mm³; and WBC count 7120/mm³. A long-term dietary deficiency of which of the following nutrients is most likely to produce these findings? (A) Folate □ (B) Thiamine (C) Pyridoxine □ (D) Niacin (E) Riboflavin 3 A 50-year-old man with a history of chronic alcoholism has had increasing congestive heart failure for the past year. Forthe past month, he has experienced increasing confusion, disorientation, and difficulty ambulating. Physical examination shows nystagmus, ataxia of gait, and decreased sensation in the lower extremities. Laboratory studies show hemoglobin, 13.1 g/dL; hematocrit, 39.3%; MCV, 90 μm³; platelet count, 269,300/mm³; and WBC count 7120/mm³. A long-term dietary deficiency of which of the following nutrients is most likely to produce these findings? (A) Folate □ (B) Thiamine (C) Pyridoxine □ (D) Niacin (E) Riboflavin
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