00:01
Now the last test
takes the most skill.
00:04
Ultrasound requires
a skilled technician,
an abdominal CAT scan
requires a skilled technician,
gallbladder radionucleotide scan
involves a very skilled technician,
however, an ERCP and endoscopic
retrograde cholangiopancreatography
requires a physician.
00:25
Now the picture I
have for you there.
00:27
This is such a beautiful
thing that they did.
00:30
Your going to feed a scope all
the way down in your GI tract
so we can push it all
the way down gently
so we can get a good
view with a camera.
00:40
The ERCP is a much
more involved process
and it is clearly invasive and
I'm going to explain to you why.
00:47
First of all this test takes longer than
any of the others that we've discussed.
00:52
This can take anywhere from
30 to 90 minutes to complete.
00:56
Now the patient is going to have
to be sedated at the very least
maybe have general anesthesia.
01:02
That's a decision that will
be made by the physician
but during the procedure the patient
is going to need to be monitored.
01:09
If the patients receiving
general anesthesia,
they will be as CRNA,
a certified registered
nurse anesthetist
or an anesthesiologist right
there monitoring the patient.
01:20
If they're under
conscious sedation,
you may as the nurse be the one who
performs them patient monitoring,
you're going to watch
respiratory status,
pulse ox, their oxygen
saturation, their heart rate,
and their blood pressure.
01:34
Now conscious sedation can
only be monitored by a nurse
who has been educated trained
and certified on how to do this.
01:42
That's a program that will be offered by
the hospital or the setting where you work.
01:46
So ERCP takes longer to do,
takes a lot of skill to guide that
scope through the patient's GI tract
and it requires extra nursing skills to monitor
that patient during conscious sedation.
02:01
The ERCP uses an
endoscopic camera.
02:05
It's called a duodenoscope.
02:08
Now it's called
the duodenum scope
because the end
goal is to visualize
where the stomach
meets the duodenum.
02:15
So this duodenoscope
is a long flexible tube
about the diameter of a pen.
02:21
So, you know,
that doesn't seem that big
unless they're inserting it into your
GI tract then it seems really big.
02:29
But the end of this scope
is a camera on the end.
02:32
Look at the picture
I have for you there.
02:34
You're looking at the very
end of that duodenum scope
and it's got that little
camera on the end.
02:40
Now the duodenum scope can
be directed and moved around
the many bends of the
stomach and the duodenum
to get it in just
the right place.
02:49
Because a duodenal scope this little
camera is inserted into the mouth
and through the digestive tract
till you arrived at the duodenum.
02:57
So think where
this has to travel
enters your mouth,
down to your esophagus,
into your stomach lining
all the way around
to you can get to where the
duodenum can be visualized.
03:10
Now the camera transmits
digital video images, got it.
03:15
Okay, so a scope in my mouth,
all the way down to my duodenum,
got this little camera,
that's going to transmit
digital video images
to a TV screen right
there in the room.
03:27
That way the physician
can see problems
in the bile and pancreatic duct.
03:32
Why?
Because he's got a video crew
at the end of this duodenoscope,
there so you can actually
visualize in real time.
03:40
Now this duodenoscope is a
very thin fiber optic bundle.
03:44
It transmits light to
the tip of the endoscope
and then there's a
thin wire with a chip
that's also at the very
tip of the endoscope
and that's what transmit
its back to that TV screen.
03:56
So just stop for a minute and
think about how amazing this is.
04:00
This is something so tiny that
brings back powerful images
for the physician
to assess and see
what's going on in problems in
the bile and pancreatic ducts.
04:13
You may be wondering why
I have a slide here titled
the ampulla,
papilla and the santorini.
04:20
No, those are not names of
17th century sailing vessels.
04:24
I want to explain a little bit
about the landmarks you'll be seeing
if you ever get to
see one of these ERCPs
and isn't that one of the
funnest parts of clinicals
when you get to go off the floor
and see if procedure actually done.
04:37
So the ampulla is specifically
located at the major duodenal papilla.
04:43
So far I know you're not
impressed, but stay with me,
the ampulla of vater,
underline that,
ampulla of vater, you've seen
that come up over and over again
as we're talking
about cholecystitis.
04:53
Because it's an
important landmark
halfway along the second
part of the duodenum.
04:58
So we use that as landmark
when the physician is
performing the ERCP.
05:04
Now where does the
santorini come in?
Well much like the
rest of history.
05:08
Vater is credited
with the discovery,
but it probably was santorini
who was the first one to
describe this ampulla.
05:17
So we call it the
ampulla of vater
but really it probably should be
called the ampulla of santorini.
05:23
Sorry, dude.
05:24
Now the ampulla of
Vater / Santorini
marks where the celiac
trunk stop supplying the gut
and the superior mesenteric
artery takes over.
05:35
Why do you care?
And that's the major blood
supply engaged in your intestines
and bringing blood
back up to your liver.
05:44
So that's critically important
when the ampulla has identified
this small plastic catheter, right?
It's called a cannula is passed through
an open channel of the endoscope.
05:55
Look at the picture that
I have there for you
so find the ampulla,
the physician will pass say
small plastic catheter or cannula
through the open
channel of the endoscope
into the opening of the ampulla.
06:07
Now they're able to
see the bile ducts
and or the pancreatic ducts,
whatever they need to visualize.
06:14
So we slow down here and
took the time to show you.
06:18
This is an incredible feat
to feed this little tiny camera
all the way through the GI tract
even advanced it
through the ampulla.
06:28
It is a brilliant and it takes
a very a skilled physician
to perform this exam safely.
06:35
You think that's it,
but it's not, that's not all.
06:39
They also have another open
channel in the duodenum scope.
06:41
And here's what it
lets the physician do.
06:44
One they can do biopsies.
06:46
Hey, that's really helpful.
06:48
When the patient were worried
about pancreatic cancer
or something that
hepatobiliary duct.
06:52
We need biopsy so they can
get a sample of the tissue
and then examine it
under a microscope.
06:59
Last, second, we can place a
stent or a tube for obstruction.
07:04
So for looking for someone has scarring
down there, maybe chronic inflammation.
07:09
We placed a stent here to allow
for the bile to flow freely.
07:13
Just like we would in
a coronary procedure
or the blood flow to the
heart is compromised.
07:18
We put a stent in to
keep the vessel open,
can also put a stent or a tube
in here to keep bile flowing.
07:24
Remember they can do all this
in about 30 to 90 minutes.
07:31
So the goal of this test is to take
a very close look at the duodenum.
07:35
I mean an up-close-and-personal
look at the duodenum
or the small intestine.
07:41
So look at the picture
I have for you there.
07:43
You've seen this before but I
want you to think that through
now look, you're threading that to widen
the scope all the way through the stomach
down to that spot right
by the small intestine.
07:52
I are going to weave that through the
sphincter of oddi and the ampulla of vater.