The biliopancreatic diversion is primarily a
malabsorptive procedure (Figure 4) and involves
removal of the lower section of the stomach and
direct anastomosis to the jejunum. A variation
of the biliopancreatic diversion involves the
duodenal switch (Figure 5) and this adaptation
retains the pylorus thus preventing increased
transit into the small intestine. Biliopancreatic
diversion with duodenal switch reduces
‘dumping’, which is characterized by sweating,
nausea, weakness and diarrhoea after certain
meals rich in concentrated sweets as a result
of increased food transit to the small intestines
(Schneider and Mun, 2005)