00:01
Our next invasive hemodynamic monitoring is
our pulmonary artery pressure monitoring.
00:06
This is the most invasive
monitoring that we have
that would involve a PA catheter
or pulmonary artery catheter,
which is a balloon tip catheter that
terminates in the pulmonary artery
and delivers a multitude of hemodynamic
information from the patient.
00:21
Things such as cardiac output and index,
mixed venous, pulmonary artery pressures,
central venous pressure,
core temperature, wedge pressure,
systemic vascular resistance and
a whole host of other information
come from this one catheter.
00:40
Next, we're going to discuss
the PA catheter components.
00:43
First, we're going to look at this big
blue blade, which is the SPO2 connector.
00:48
When you hook it
up to your monitor,
it's going to read the mixed venous
oxygenation in your pulmonary artery.
00:54
The next portion is
this big blue round one.
00:57
This is your thermal
filament connector.
00:59
This is where you get your
cardiac output and index.
01:03
The next part here is
this little white one.
01:06
This is your
thermistor connector.
01:08
This is where we get
our core temperature.
01:10
Next, we're going to
go to our ports, okay.
01:13
The white one is
our infusion port.
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This is where we can
infuse medications.
01:18
It's also called a volume infusion
port or a medication line.
01:23
Then we're going to
go to our blue port.
01:26
This one is our
central venous port.
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This is where we get our central
venous pressure in the right atrium,
also called a proximal port.
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And then the last port
is our yellow port.
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This is called our distal port.
01:38
This is where we get our
pulmonary artery pressures.
01:42
Then our red one here
is our balloon port.
01:46
This is what inflates the balloon
in order to get a wedge pressure.
01:51
On it you have a lock.
01:53
When the lines are
lined up the red lines,
it is unlocked and you
can inflate the balloon.
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When it's locked,
you're unable to
inflate the balloon.
02:04
Another special consideration
with a pulmonary artery catheter
involves infusion of medications through
the pulmonary artery distal port.
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Remember, this port is going
right into the pulmonary artery.
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You should not infuse anything else
but normal saline into this lumen.
02:22
If you infuse more anything else
you could call pulmonary infarction.
02:30
Next, let's talk about the
distal end of the PA catheter.
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At the very end of it,
you have one hole and an infrared sensor.
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The hole is the
PA distal opening.
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That's where if we had fuse
sailing through the PA port,
this is where it comes out at.
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Look closely as I infused
saline through the PA line.
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Now we see where
the comes out at.
02:53
This is going to sit in
the pulmonary artery.
02:55
At the end of it is also what
I called that infrared light
that is going to read your
mixed venous oxygenation.
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A little bit up from
that, we have our balloon.
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Watch as I inflate this
balloon with 1 1/2 cc's of air.
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As I let the syringe go,
it'll deflate on its own.
03:16
Proximal from our balloon
is our thermal filament.
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This is our brown port,
where we get our core
temperature from.
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A little bit upstream
from that is our CVP port.
03:27
Okay, so if you infuse
anything through that CVP port,
it comes out right there.
03:35
And a little bit proximal from
that on the 30 centimeter line
is our infusion port that usually
sits again in the superior vena cava.
03:44
If you infuse medications like
through that, like I'm doing now,
it comes out right there in
inferior or superior vena cava.
03:54
Now with this, we have markings
on here which are depth gauges.
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So one tiny thin line
is 10 centimeters.
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Going up from there,
we have one thick band,
that's our 50 cm mark.
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So one thin band and one thick
band would be our 60 cm mark.
04:15
One special consideration I want
to show you is how do you leave
the balloon syringe and the balloon
lock when you're not with the patient.
04:25
The way I was taught when I first
started was to leave the lock locked
and with no air in the syringe.
04:33
Because the thought was that if there's
no air in the syringe and it's locked,
then there's no way that the patient
can accidentally inflate the balloon
and cause pulmonary infarction.
04:43
The problem I found was that when you
come into a room and you see this,
you don't know if there's
actual air in that balloon.
04:53
So just like this.
04:55
I have it just like this, but I don't know
if there's air in that balloon, right?
So I look up at my PA waveform,
and maybe it's not
wedged right now.
05:02
But if I turn the patient,
this may start blocking blood flow
and then I get a wedge waveform.
05:09
I have times went into a room and
I've unlocked the syringe like this
and it's come back which means that there
is air in that syringe or in that balloon.
05:20
So the way I teach my nurses
is to leave it unlocked
with no air in the
syringe, okay.
05:29
The reason is if it's
unlocked like this,
with no air in the syringe there could
not possibly be air in the balloon.
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If there was air in the balloon, it would
come back and and go into the syringe.
05:43
So if I come into a room and
I've taken care over a patient,
maybe the nurse was with the patient
the whole night and and I'm taking over
and I see that this is unlocked
with no air in the syringe,
that means there cannot
possibly be air in that balloon.
06:05
On this PA catheter we
have different size bands,
we have one thin band
and in thick bands.
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One thin band indicates
10 centimeters.
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A thick band indicates
50 centimeters.
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One thin band together with one
thick band is going to be 60 cm.
06:23
This is in order for
us to measure the depth
that the PA catheter
is in the patient.
06:28
This is important to know because the PA
catheter may get pulled on and moved out
and we get a good indication
of if it's been adjusted
because of the depth
markings that that it's at.
06:40
Our next PA catheter component is
our catheter contamination shield.
06:44
This maintains a sterile PA line
that's outside of the patient.
06:48
We need a portion that sterile
so that if we need to adjust
the length or depth of the
PA catheter in the patient,
we could push it in
a little bit more
and have a sterile portion
going into the patient
rather than an unsterile and
it's introducing bacteria.
07:03
This catheter contamination
shield locks it both ends.
07:06
So it prevents it from getting
pulled out or pushed in by accident.