
In recent years, better clinical understanding of procedures combining
restrictive and malabsorptive approaches has increased the choices
of effective weight loss surgery for thousands of patients. By
adding malabsorption, food is delayed in mixing with bile and
pancreatic juices that aid in the absorption of nutrients. The
result is an early sense of fullness, combined with a sense of
satisfaction that reduces the desire to eat.
According
to the American Society for Bariatric Surgery and the National
Institutes of Health, Roux-en-Y gastric bypass is the current
gold standard procedure for weight loss surgery. It is one of
the most frequently performed weight loss procedures in the United
States. In this procedure, stapling creates a small (15 to 20cc)
stomach pouch. The remainder of the stomach is not removed, but
is completely stapled shut and divided from the stomach pouch.
The outlet from this newly formed pouch empties directly into
the lower portion of the jejunum, thus bypassing calorie absorption.
This is done by dividing the small intestine just beyond the
duodenum for the purpose of bringing it up and constructing a
connection with the newly formed stomach pouch. The other end
is connected into the side of the Roux limb of the intestine
creating the "Y" shape
that gives the technique its name. The length of either segment
of the intestine can be increased to produce lower or higher
levels of malabsorption.
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Gastric Bypass
(Roux-en-Y) - Frequently Asked Questions
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