<s>
An	O
endoscopy	B-Application
is	O
a	O
procedure	O
used	O
in	O
medicine	O
to	O
look	O
inside	O
the	O
body	O
.	O
</s>
<s>
The	O
endoscopy	B-Application
procedure	O
uses	O
an	O
endoscope	O
to	O
examine	O
the	O
interior	O
of	O
a	O
hollow	O
organ	O
or	O
cavity	O
of	O
the	O
body	O
.	O
</s>
<s>
Unlike	O
many	O
other	O
medical	B-Application
imaging	I-Application
techniques	I-Application
,	O
endoscopes	B-Application
are	O
inserted	O
directly	O
into	O
the	O
organ	O
.	O
</s>
<s>
There	O
are	O
many	O
types	O
of	O
endoscopies	B-Application
.	O
</s>
<s>
Depending	O
on	O
the	O
site	O
in	O
the	O
body	O
and	O
type	O
of	O
procedure	O
,	O
an	O
endoscopy	B-Application
may	O
be	O
performed	O
by	O
either	O
a	O
doctor	O
or	O
a	O
surgeon	O
.	O
</s>
<s>
Most	O
often	O
,	O
the	O
term	O
endoscopy	B-Application
is	O
used	O
to	O
refer	O
to	O
an	O
examination	O
of	O
the	O
upper	O
part	O
of	O
the	O
gastrointestinal	O
tract	O
,	O
known	O
as	O
an	O
esophagogastroduodenoscopy	B-Application
.	O
</s>
<s>
Endoscopy	B-Application
may	O
be	O
used	O
to	O
investigate	O
symptoms	O
in	O
the	O
digestive	O
system	O
including	O
nausea	O
,	O
vomiting	O
,	O
abdominal	O
pain	O
,	O
difficulty	O
swallowing	O
,	O
and	O
gastrointestinal	O
bleeding	O
.	O
</s>
<s>
Specialty	O
professional	O
organizations	O
that	O
specialize	O
in	O
digestive	O
problems	O
advise	O
that	O
many	O
patients	O
with	O
Barrett	O
's	O
esophagus	O
receive	O
endoscopies	B-Application
too	O
frequently	O
.	O
</s>
<s>
Health	O
care	O
providers	O
can	O
use	O
endoscopy	B-Application
to	O
review	O
any	O
of	O
the	O
following	O
body	O
parts	O
:	O
</s>
<s>
Endoscopy	B-Application
is	O
used	O
for	O
many	O
procedures	O
:	O
</s>
<s>
An	O
endoscopy	B-Application
is	O
a	O
simple	O
procedure	O
that	O
allows	O
a	O
doctor	O
to	O
look	O
inside	O
human	O
bodies	O
using	O
an	O
instrument	O
called	O
an	O
endoscope	O
.	O
</s>
<s>
These	O
are	O
similar	O
to	O
endoscopes	B-Application
.	O
</s>
<s>
Endoscopes	B-Application
are	O
also	O
a	O
tool	O
helpful	O
in	O
the	O
examination	O
of	O
improvised	O
explosive	O
devices	O
by	O
bomb	O
disposal	O
personnel	O
.	O
</s>
<s>
Law	O
enforcement	O
uses	O
endoscopes	B-Application
for	O
conducting	O
surveillance	O
via	O
tight	O
spaces	O
.	O
</s>
<s>
Perforation	O
and	O
bleeding	O
are	O
rare	O
during	O
gastroscopy	B-Application
.	O
</s>
<s>
A	O
doctor	O
can	O
further	O
discuss	O
risks	O
with	O
the	O
patient	O
with	O
regard	O
to	O
the	O
particular	O
need	O
for	O
gastroscopy	B-Application
.	O
</s>
<s>
After	O
the	O
procedure	O
,	O
the	O
patient	O
will	O
be	O
observed	O
and	O
monitored	O
by	O
a	O
qualified	O
individual	O
in	O
the	O
endoscopy	B-Application
room	O
,	O
or	O
a	O
recovery	O
area	O
,	O
until	O
a	O
significant	O
portion	O
of	O
the	O
medication	O
has	O
worn	O
off	O
.	O
</s>
<s>
Patients	O
who	O
have	O
had	O
an	O
endoscopy	B-Application
without	O
sedation	O
are	O
able	O
to	O
leave	O
unassisted	O
.	O
</s>
