00:00
So how do we end up with
peripheral edema and cirrhosis?
Well, we call the pressure
of when the protein
moves into the vessel
and it's able to draw
in sodium and water
we call that oncotic pressure.
00:16
Okay so you see that word
there, right and your middle box
oncotic pressure,
is the amount of
pressure that is exerted
because you have albumin
in your intravascular space
drawing in those
other substances.
00:29
When my liver whose job it is to make
the albumin, look at the first box,
when the livers job
is to make albumin
can't make an adequate
amount of albumin,
It's making less albumin
than I have a lower or
lesser oncotic pressure.
00:45
Now, that's a very
formal way to say,
Hey if I don't have a lot
of albumin in my vessels,
then I'm not going to have
enough to track sodium and water
that's going to be a problem.
00:54
So when I don't have an
appropriate oncotic pressure
because of an liquid
amount of albumin
then fluids are going to move
out of the intravascular
space and into the tissues.
01:06
That's what causes
peripheral edema.
01:09
Okay, so when I go back in
and assess that patient
remember her with her cap on
and she was telling us her legs
felt heavy and her socks left marks.
01:19
She's having peripheral edema
because of this very thing.
01:23
She has peripheral edema
because her liver is struggling,
she doesn't have enough albumin
and fluid is leaking out
into the interstitial spaces
when it leaks into the
interstitial spaces,
you start getting those
feet that look like that.
01:37
You start getting those
cankles, you start pitting edema
that you can assess with
your finger on the patient.
01:44
So you understand what's
going on inside the body
and now you know what it looks
like outside of the body.
01:50
But before we move on,
I want to bring you back to
that picture of the liver
you already know the red is the
artery, the blue is the portal vein.
02:00
Remember the portal
vein is coming from?
Right, the gut.
02:04
The intestines.
02:05
It was pretty cool that the liver
has two major blood supplies,
but it's because
it is so important.
02:12
But we've got it less albumin,
less oncotic pressure,
fluids move out, that's how we
end up with peripheral edema.
02:19
We know that peripheral
edema picture that picture
where we just white
it out the whole body.
02:25
It's the arms and legs that's
peripheral vascular system.
02:28
We have edema there
but we're talking about
what happens with ascites.
02:34
Okay back to that portal vein.
02:36
Put your finger on
the portal vein.
02:40
We've got increased
portal pressures.
02:43
We've got increased
portal hypertension.
02:46
Now, let's think that through.
02:47
You already know that cirrhosis means
the liver is all narrowly inside.
02:53
The liver is a major filter,
things go through it and
it's meant to go through it.
02:58
At a pretty rapid pace.
03:00
When the liver becomes damaged from
whatever has cause liver damage
when the liver becomes damaged,
now it's harder for
blood to go through it.
03:09
So back to that portal vein
when it's trying to send you
blood back up to the liver.
03:16
Okay,
that's a really big workload
because that liver is
not so simple anymore.
03:22
It's not so easy for
blood to flow through.
03:25
So you start having
portal hypertension.
03:29
The blood pressure
in that vessel
that is bringing blood
back up from the gut
into the liver now as...
03:37
it's really got to be intense to try and
push blood through that gnarly liver.
03:43
Now, you're starting to get a
picture on why we end up with ascites
because ascites is different
than peripheral edema.
03:50
Peripheral edema, arms and legs,
when we start talking
about ascites,
that's in a different location.
03:56
A lot closer to the liver.
03:58
I'm going to come back
to that in just a minute
before we can talk
about ascites,
I want to get one more
important point in
about albumin and its
relationship with edema.
04:09
See when you're practicing.
04:10
This is the type of information
I want you to have and to be aware of
to know how to keep your patient safe.
04:16
So one of our roles and responsibilities
is to monitor and assess
the patient's serum
albumin levels.
04:23
Remember when you
see that word serum
that means we've done a lab
test we've drawn blood serum,
send it to the lab and we
look at the patient's results.
04:33
Now when you look at results,
I know the normal
range for that lab
is going to be right next
to your patient results,
but in order to become
a practicing nurse,
you need to make it through
your nursing school exams
and the big one the NCLEX.
04:48
So learning lab values
as a really critical part
of success in nursing
school and on exams.
04:55
The normal range we're going
to give you is 3.4 - 5.4.
05:01
Now let me tell you the
best way the easiest way
the most effeicient way
to learn these values
is use what we've provided for you
with a spaced repetition questions.
05:12
Just keep up with those.
It makes it fun.
05:15
It's quick.
05:16
It's mobile and it's
the best way to learn
kind of boring things like
magic numbers for normal values.
05:24
Now understanding what goes
on behind it is the cool part,
but the bottom line is you have
to know those basic numbers.
05:32
Okay, so nurses who are
on top of their game.
05:35
We're really watching
out for their patients.
05:37
They will always know that
somebody with liver disease
is at risk for
low serum albumin.
05:46
Now, what is the word
for low serum albumin?
Hypoalbuminemia.
05:52
Okay, Hypoalbuminemia.
05:55
Hypo means low,
albumin,
I know you know that word
and emia means
it's in the blood.
06:02
So we're back in that
patients room together.
06:05
We've got our female
patient with the hat on
if you can visualize her she's
told us about her peripheral edema.
06:13
We know that she has a
history of liver problems.
06:16
So I'm going to be on the lookout
right away anybody with liver problems.
06:20
I know they have less albumin.
06:22
They have an increased
risk for edema.
06:24
So I'm always going to
be assessing for edema.
06:27
If I get the benefit
of a lab value,
I'm also going to keep an
eye on that and the trend.
06:32
Is this patients trend for
serum albumin going up?
Or going going down?