VSG historically had been
performed only
as the first stage of BPD-DS
(see above) in patients who may be at high risk for complications from
more extensive types of surgery. These patients’ high risk
levels are due to body weight or medical conditions. However, more
recent information indicates that some patients who undergo a VSG can
actually lose significant weight with VSG alone and avoid a second
procedure. It is not yet known how many patients who undergo VSG alone
will need a second stage procedure. A VSG operation restricts food
intake and does not lead to decreased absorption of food. However, most
of the stomach is removed, which may decrease production of a hormone
called ghrelin. A decreased amount of ghrelin may reduce hunger more
than other purely restrictive operations, such as gastric band.
Source: U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES, National Institutes of Health
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