Description: A long,
flexible tube with a camera mounted on the end (endoscope) is inserted into
the mouth. The scope is then guided through the esophagus, stomach, and
into the duodenum (first part of the small intestines). This allows for
viewing of the internal lining of the upper intestines directly. A Gastroenterologist
performs the test with assistance from a nurse in a hospital, endoscopy
suite or doctor's office. The Gastroenterologist interprets the results.
If specimens are obtained, a Pathologist interprets the results. The test
takes 5-15 minutes to complete .
Discomfort - An intravenous
line has to be placed. Depending on the level of sedation, there may be
some discomfort as the scope is passed and as air is instilled into the
intestines.
Results - The Gastroenterologist's
interpretation is available immediately; 2-3 days for results from tissue
samples obtained.
Risks of Procedure
- Perforation of the intestines, bleeding, aspiration of gastric juices
into lungs.
Average Cost - $$-$$$
Other names
EDG, Endo, Upper Gastrointestinal (GI) Endoscopy [Back to Top]
Indications for Test
To examine and take
tissue samples of abnormalities identified by other tests (UGI x-ray or
CT) of the esophagus, stomach, and duodenum.
To search for the
cause of symptoms thought to come from the UGI tract such as swallowing
problems, chest pain, nausea or vomiting, heartburn, loss of appetite and
weight loss, diarrhea, or GI bleeding.
To stop bleeding
from the upper GI tract, stretch open the esophagus, or remove foreign bodies.
Some persons may
be given an antibiotic before the test if there is a risk of infection associated
with the test. [Back to Top]
Preparation
Nothing should be
consumed for 8 hours before the test, except medications as directed by
your doctor.
Aspirin, non-steroidal
anti-inflammatory drugs (aspirin substitutes), blood thinners, and anticoagulants
should not be taken for five days before the test to reduce the risk of
bleeding.
Arrangements should
be made for someone to drive you home after the test.
You wear a hospital
gown. Dentures are removed before the test. [Back to Top]
Procedure
Monitors are attached
to observe the blood pressure, pulse rate, and oxygen level of the blood.
Supplemental oxygen is given via the nose.
An intravenous line
is placed for a sedative to be given. A local anesthetic may be sprayed
into the throat to suppress the gag reflex.
A mouthpiece is placed
between your teeth to prevent you from accidentally biting the endoscope.
Your throat may be
sprayed with a medication to suppress the gag reflex. You receive a sedative
intravenously. Depending on the level of sedation, you may drift off to
sleep during the procedure.
After you are sedated,
an endoscope is passed through your mouth and guided down into the duodenum
(the first part of the small intestines just beyond the stomach). The image
from the endoscope is displayed on a TV monitor.
Air is instilled
into the intestines via the endoscope to aid in viewing the inside lining
of the intestines.
Tissue samples can
be taken via the endoscope. If a narrowed area is found, it can be dilated
via the endoscope. [Back to Top]
After the Procedure
You are monitored
in the recovery area until the sedation wears off.
Once the sedation
wears off, you may have someone drive you home.
If your throat was
sprayed with oral sedation, you should not eat or drink until it wears off
(up to 2 hours after the test).
You will belch and
pass flatulence until the air instilled during the study has been passed.
A mild sore throat is to be expected after the test for several days.
If you have severe
abdominal pain or pass blood, notify your doctor immediately. [Back to Top]
Factors affecting results
The presence of food
or blood in the stomach can limit the ability to examine the gastric lining. [Back to Top]
Advantages
The lining of the
esophagus, stomach, and duodenum can be visualized directly.
If an abnormality
is identified, tissue can be obtained for analysis, bleeding can sometimes
be stopped, and narrowed areas can sometimes be dilated. [Back to Top]
Disadvantages
The test is an invasive
procedure.
Depending on the
level of sedation, there may be discomfort associated with the test. [Back to Top]