Weight loss is
measured in
relationship with
the percentage of
excess weight (%EW)
and additionally
taking into account
the amount of time
that loss of excess
weight is
maintained.
There are
several factors that
would determine the
answer to this
section.
One of them is the
Body
Mass Index (B.M.I.).
This number
indicates the
percentage of excess
weight the patient
had prior to the
operation.
It is also important
to take into account
the type of surgery
that was performed,
since there are
surgeries with
greater percentages
of weight loss and
weight loss
maintenance.
A good surgery is
one that among other
things, reduces the
persons excess
weight by about 50%
and manages to
maintain the weight
loss for a minimum
of 5 years.
Comparing surgical
techniques results;
the surgery that
obtains the greatest
weight loss is the
Duodenal Switch
with a (%EW) loss of
up-to of 75%;
followed by the
Gastric By-Pass with
an average (%EW)
loss of 60-65% and
closely followed by
the Adjustable
Gastric Band with
(%EW) losses of
around 55%. These
percentages are
taken after the
first year following
the surgery.
Five years after
surgery,
Duodenal Switch
is the surgery
technique that
performs the best in
relationship with
weight loss
maintenance with a
75% weight loss
maintenance,
followed by the
Gastric By-Pass with
50-55%, and the
Adjustable Gastric
Band with 50%.
Major studies
regarding 10 years
after the surgery,
have only been done
with
Duodenal Switch
and Gastric By-Pass,
the results being as
mentioned before
Duodenal Switch
having the greatest
percentage of weight
loss. There have not
been long term
studies yet, based
on the Adjustable
Gastric Band
surgery.
