QuestionSBA
QuestionChoice
Vitamin B3 (niacin) is absorbed throughout the small intestine and stomach therefore loss of the terminal ileum will not drastically affect absorption. A deficiency of vitamin B3 causes Pellagra.
10000273
c
Vitamin B3
QuestionChoice
Vitamin B12 is actively absorbed in the terminal ileum bound to intrinsic factor. Resection of the terminal ileum can therefore result in a deficiency. A deficiency of vitamin B12 can cause megaloblastic anaemia and peripheral neuropathy.
10000271
a
Vitamin B12
QuestionChoice
Vitamin B6 (pyridoxine) is primarily absorbed in the jejunum so would be unaffected by this surgery. A deficiency of vitamin B6 can cause anaemia and neuropathy. Although individuals with IBD are more likely to suffer pyridoxine deficiency, resection of the terminal ileum is a major risk factor for vitamin B12 deficiency.
10000274
d
Vitamin B6
QuestionChoice
Vitamin B9 (folic acid) is absorbed in the duodenum and jejunum. A deficiency of folic acid results in megaloblastic anaemia and can cause neural tube defects in the foetus.
10000275
e
Vitamin B9
QuestionChoice
Vitamin B1 (thiamine) is absorbed in the ileum and jejunum. As resection of the terminal ileum leaves the remainder of the ileum intact, this patient is unlikely to struggle to absorb vitamin B1. A deficiency of vitamin B1 can cause polyneuropathy, Wernicke-Korsakoff syndrome, and heart failure.
10000272
b
Vitamin B1
Concept
Chapter
2693
3733
Vitamin Deficiency Syndromes
Topic
137
Gastrointestinal
12601
A 35-year-old male has recently had surgery to treat severe Crohn's disease. This surgery involved the resection of his terminal ileum.

Which of the following vitamins is he at risk of becoming deficient in?
a