Duodenal switch procedure

Last revised by David Luong on 27 Jul 2021

The duodenal switch procedure is a form of biliopancreatic diversion which is often done as an obesity reduction surgery.

It has a restrictive portion and malabsorptive portion:

  • restrictive portion: involves removal of approximately 70% of the stomach (along the greater curvature) and most of the duodenum
  • malabsorptive portion: involving rerouting a lengthy portion of small bowel creating two separate pathways and one common channel

History and etymology

It is thought to have been described by DeMeester and colleagues in 1987 as a surgical solution for primary bile reflux gastritis or to decrease the postgastrectomy symptoms seen in patients after distal gastrectomy and gastroduodenostomy.

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