Duodenal Switch

The Duodenal Switch procedure (DS, BPD/DS) reduces stomach size, reroutes the intestines, and removes the gallbladder.

Nutrient deficiencies may arise due to:

Significant malabsorption

Reduced stomach volume

Reduced dietary intake

Decreased capacity for digestion due to changes in stomach size

Reduced gastric acid (use of PPIs, and reduced volume)

Source: Xanthakos, Stavra A. “Nutritional Deficiencies in Obesity and After Bariatric Surgery.” Pediatric clinics of North America 56.5 (2009): 1105–1121. PMC. Web. 25 Feb. 2017.

Nutritional Deficiencies

Pre and Post Bariatric Surgery/Procedure

	Pre-Surgery	Post-Surgery
Protein	X	X
Calcium		X
Vitamin A	X	X
Vitamin B1 (thiamin)	X	X
Vitamin B6 (pryidoxine)	X	X
Vitamin B12 (cobalamin)	X
Folate	X	X
Vitamin C	X	X
Vitamin E	X	X
Vitamin K		X
Vitamin D	X	X
Iron		X
Magnesium		X
Potassium		X
Zinc	X	X
Selenium	X	X
Copper

Nutritional deficiencies table shows deficiencies more commonly reported in research studies. For more information about deficiencies by procedure, and how these were identified, visit the resources section of Bariatric Advantage.