1. Which of the following is NOT the cause of iron deficiency after RYGB? A. Hypoacidity of the…

1. Which of the following is NOT the cause of iron deficiency after RYGB? A. Hypoacidity of the gastric pouch B. Bypass of the primary site of iron absorption C. Intolerance to meat D. Gastric restriction 2. Though not proven, it is suspected that vitamin B12 is absorbed by an alternate mechanism after RYGB. Identify the TRUE statement for vitamin B12 deficiency after RYGB. A. In patients receiving multivitamin supplementation, vitamin B12 deficiency is less common than folate deficiency. B. Patients who do not respond to high dose of oral vitamin B12 usually do not respond to IM vitamin B12 injections also. C. Pancreatic secretions are essential for vitamin B12 absorption. D. Intranasal vitamin B12 is not effective for vitamin B12 deficiency.

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