Posted: July 24th, 2017

A 40-year-old man with a 20-year history of alcohol abuse is brought to the hospital by his friends because he was difficult to rouse. He ate a large meal several hours ago. He is emaciated and lethargic. Examination shows severely restricted horizontal eye movements and ataxia of both upper extremities. The most likely cause of these findings is a deficiency of which of the following nutrients?

A 40-year-old man with a 20-year history of
alcohol abuse is brought to the hospital by his
friends because he was difficult to rouse. He ate
a large meal several hours ago. He is emaciated
and lethargic. Examination shows severely
restricted horizontal eye movements and ataxia
of both upper extremities. The most likely cause
of these findings is a deficiency of which of the
following nutrients?
(A) Folic acid
(B) Vitamin A
(C) Vitamin B1 (thiamine)
(D) Vitamin B6 (pyridoxine)
(E) Vitamin B12 (cobalamin)