00:01
Hi! Welcome to our video
series on renal injury.
00:05
Now we're going to look
at the difference between
acute kidney injury
versus chronic disease.
00:10
Now why you care about this is
because as nurses we're
the ones at the bedside
that are alert
and with our patients
and we can recognize
the signs and symptoms
of acute kidney injury.
00:21
So we don't let it progress
to chronic disease.
00:23
Ready?
We're going to look
at the definition
of what acute kidney injury is,
and the people who are
most likely to experience it.
00:31
Now we're going
to start with a picture
anytime you're looking
at a system
you always want
to start with normal.
00:37
That's the best
way to understand
when an organ is struggling.
00:41
So right in the middle
there, you see
a pretty nice picture
of the kidneys, right?
It's full.
It's got good color.
00:47
It's got a nice ureter
coming out of it.
00:49
Everything looks well.
00:51
This is a kidney
that can filter waste
and toxins out of the body
can also help us get rid of
excess water.
00:58
That's when a kidneys able to
do what it was designed to do.
01:02
Now let's go from
little perfect to a little bit worse.
01:06
If you move to the left,
it's called acute K
kidney injury.
01:10
Now the old term used
to be acute renal failure.
01:13
I've actually experienced this.
01:14
So I'm going to tell
you a little bit
about what it's about,
but see the kidney tissue,
it looks pretty okay,
but see he likes almost
has like a bruise there.
01:23
That's to help you kind of think
about this kidneys taken a hit.
01:26
It has an issue and we'll talk
about what causes
that a little bit later,
but for right now
what I want you to see is this
is what normal would look like.
01:35
This is what acute kidney
injury would look like
and then all
the way over on the right.
01:41
That is the saddest
part of the slide
that's chronic renal failure
or chronic kidney disease.
01:48
So he's saying
that it's all shrivel up
and over like that.
01:51
That's a tip a
kidney that is tough
and fibrous, it doesn't filter
well,
it can't get rid of waste
and you end up with excess
fluid in your patient's body.
02:02
So normal,
look how healthy and robust
that looks,
then acute kidney injury.
02:07
It's taken a hit,
but we can probably recover from that
chronic renal failure
or chronic kidney disease.
02:14
That's pretty much
the end of the line
where to do some pretty
severe things for that patient
must support like dialysis
either hemodialysis
or peritoneal dialysis.
02:24
So on a happier note,
let's look at where you and
I can intervene as nurses.
02:29
So acute kidney injury
is a sudden episode.
02:32
So underline that word acute
right that will remind you
of this is something
that it's an event,
It happens and we can intervene
with we recognize it
and help take the next best step
to keep them healthy.
02:44
So we've got the event
causes some kidney
failure or damage
and it can happen
within a few hours
or a few days.
02:52
So look at our friend
the kidney there.
02:53
We've got few more bumps
and bruises on that kidney
and when we say a few
hours to a few days
keep in mind you work 12 hour
shifts usually in healthcare.
03:03
So your patient may experience
acute kidney injury
after your shift starts
and it can progress
throughout your shift.
03:10
So you want to keep
a sharp eye out
for the key signs and symptoms.
03:14
So when it happens
when the kidney
suffers an acute injury
you end up with a
buildup of waste products
in the blood and that makes
it harder for the kidneys
to keep a right balance
of fluid in your body.
03:25
So when your kidneys
are kind of limping
as I like to call it,
they've been injured
now they have this
buildup of waste
that they normally
can get rid of it
staying in the bloodstream
and building up in the body.
03:38
The great news is
it's usually reversible.
03:42
If we recognize it
and intervene quickly.
03:45
Now, let's talk
about the criteria
for acute kidney injury.
03:48
This just means these are
things that you can look for
as a nurse to keep an eye
on your patient's kidney function.
03:54
Now, there's two main criteria.
03:56
You're going to see an increase
in the patient's
serum creatinine
and you're also going
to see a decrease
in the amount of urine
their kidneys putting out.
04:05
Alright, so the two things I
want you to have solid
before we move forward,
if I have an acute
kidney injury,
I'll have either an increase
in serum creatinine
or a decrease in urine output
the patient may even have both
but they only need
to have one or the other
for us to be concerned
about acute kidney injury.
04:25
Now, let's look at
serum creatinine.
04:27
We Define that increase in
serum creatinine is either
greater than zero
point three milligrams
or greater than
50 percent increase.
04:35
So that's the that's
a range for you.
04:37
That's a definition
of what we mean.
04:39
When we say rise in serum
meaning blood, creatinine.
04:42
Now, here's the normal levels.
04:44
We always like to give
these to you to remind you
kind of what we use these for.
04:48
Remember males have a little
bit higher level than females
Males, 0.6 to 1.2, and
Females, 0.5 to 1.1.
04:59
Now I want to remind you
that special note
about serum creatinine
because serum creatinine
it's a really cool test
it kind of gives
us a two for one.
05:06
We can see what the
level of creatinine is,
and if it's going up
we know that's a waste product
the kidneys are meant to get rid of
but if it's going up it's a
sign of poor kidney function.
05:18
Now serum creatinine can
also help us calculate
the glomerular filtration rate.
05:23
Sometimes my tongue
gets wrapped around that,
but we're looking at the
glomerular filtration rate
and see the little "e"
there in front of GFR.
05:32
That means estimate.
05:33
It takes some pretty fancy stuff
to actually measure the GFR.
05:38
So we use a calculation and one
of the things we use
to calculate an estimate of
the glomerular filtration rate
Wooh! Got it that time, is
we use the serum creatinine.
05:48
So this is a really
important lab value.
05:51
We're talking
about kidney function.
05:53
We know that creatinine is
a waste product
that should be removed
from the body.
05:57
If the kidney is struggling
we're going to watch that levels
going to start to rise
and this level will also give us
the estimated glomerular
filtration rate.
06:06
Remember, the glomerulus is one
of three parts of the Nephron
the working unit of the kidney.
06:12
So if that isn't flowing well
if that GFR the glomerular
filtration rate is going down
that means another sign
of kidney damage.
06:22
Now back to our criteria a
reduction in urine output.
06:26
Now, we've got a range
there for you to kind of
give you an idea of what you
should be looking for.
06:30
Notice the formula says
less than 0.5 milliliters
per kilogram per hour
for more than six hours.
06:39
So let's pick an easy
kilogram weight for our patient.
06:42
Let's say they
weigh 100 kilograms.
06:45
So that means
I'm going to watch
a hundred kilogram patient
times 0.5 that would equal
50, right?
So that means a hundred
kilogram patient,
I'm going to watch
if they have a urine output
that's less than 50 milliliters
per hour for more than six hours
that meets our criteria
to be really suspect
about acute kidney injury.
07:08
Okay, so watching
the serum creatinine
that's a lab work,
watching the urine output
that just involves
basic nursing care.
07:16
If you have a fully
in your patient to watch it
in a bag or you're going
to be very careful
about measuring their urine
when they use the restroom.