Gene888 1 Posted October 22, 2010 Most revision operations are higher risk than the first time a weight loss surgery procedure is performed. Revision of Vertical Sleeve Gastrectomy to Duodenal Switch actually carries with it less risk than performing the Duodenal Switch in a single operation for the first time. This is possible due to the fact that Vertical Sleeve Gastrectomy is one portion of the Duodenal Switch procedure. When converting to Duodenal Switch from Vertical Sleeve Gastrectomy Share this post Link to post Share on other sites