Which of the following statements regarding micro- nutrient deficiencies after gastric bypass surgery are true?
Thiamine deficiency is common after bariatric surgery.
Incorrect, try again! Thiamine deficiency can occur after bariatric surgery, but it is very rare and has been reported in < 1% of patients. Symptoms are usually promptly corrected by administration of 100,g/ day of intra-muscular or intravenous thiamine.
Micronutrient deficiencies are more common after bilio-pancreatic diversion than gastric sleeve.
Correct! Bilio-pancreatic diversion causes weight loss primarily by mal-absorptive mechanisms.Micronutrient deficiencies are much more common following mal-absorptive surgery such as bilio- pancreatic diversion, bilio-pancreatic diversion with duodenal switch and Roux-en Y gastric bypass, than purely restrictive surgery like gastric sleeve or laparoscopic adjustable gastric banding
Vitamin D deficiency is more prevalent in those with longer common channel after bilio-pancreatic diversion
Try again! Vitamin D deficiency can occur in upto 50% of patients post BPD surgery, if not adequately supplemented. A shorter common channel is associated with higher incidence of deficiency, due to reduced intestinal absorptive surface area.
Vitamin B 12 deficiency can occur in upto 33% of patients following Roux en Y gastric bypass surgery
Correct! Vitamin B 12 deficiency does occur in upto 1/3rd of patients after RYGB. It is thought to be due to reduction in intrinsic factor (IF) secretion post surgery. Multi vitamin supplementation is recommended in all patients.
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