00:01
Well, I bet you didn't expect
to see this.
00:03
But we're going to talk about your
brain and urination.
00:07
So what goes on
when you have that panic feeling
when you really really
have to pee?
Let's break it down.
00:13
So you have these nerve endings
in the bladder wall
that are sensitive to the
bladder stretching.
00:19
I know when I'm proctoring exams
for students,
when it takes that
full length of time
and I've been sipping a drink
through the whole proctoring time,
my bladder is screaming
at me by the time I'm done.
00:31
Well, here's what's going on
in my brain.
00:33
Those nerve endings
in the bladder
are stretched way beyond
what they should be.
00:39
Now they start shooting a message
right up to my brain.
00:42
This is nerve impulse,
it goes straight to the
cerebral cortex,
it says,
"Hello, I'm not going to be able
to hold much more."
Now what the brain
shoots back down is
it stimulates the detrusor muscle
to contract
and it stimulates relaxation of the
internal urethral sphincter.
00:59
Okay...
01:01
That sounds super fancy.
01:03
But let's talk about
what's going on here.
01:05
That's a very intense message
sent to your brain.
01:09
That's why you can't really
think very well,
if you have to go to the bathroom
really bad
because there's screaming
at your brain
to do something about it.
01:16
Now, a result of that
detrusor muscle contracting
and the internal urethral sphincter
opening up and relaxing,
is that those bladder walls
will contract
and the sphincter
muscle releases
and when it relaxes,
that opens a chute to let the urine
leave your body.
01:33
That's why when you're really really
panicking,
and you're dancing around,
is because your brain is screaming
to your bladder
to let this happen.
01:42
And that's also why potty training
can be a little difficult
for children.
01:45
But the next time
you over drink
and can't get to a bathroom
quick enough,
just say,
"Hey, this is no problem.
It's just my brain screaming."
But make sure you get to the
bathroom.
01:56
So what's in all this stuff
that's filling up my bladder?
Well, it's mostly...
02:00
Water.
02:01
Yep, that's it.
02:03
What's in your urine is 95%
even a little more than that
water.
02:08
Now most of you are really good
about drinking water.
02:11
So you know,
when you first wake
up in the morning,
it's more concentrated.
02:14
In fact, we use
the first urine of the morning
for some specialized
urine testing.
02:19
But as you go through
the rest of the day,
and you're drinking adequately,
you notice that your urine
should be getting lighter
and lighter in color.
02:28
But urine is predominantly
greater than 95% water.
02:31
So you do the math.
02:34
What's in the other 5%?
Well,
urea,
chloride,
sodium,
potassium,
creatinine,
and we've got some other...
02:43
let's just call them
dissolved ions.
02:45
Inorganic and Organic compounds
like
proteins,
hormones,
and metabolites.
02:51
Okay, so if you're not impressed,
you really should be
because in from
a urine analysis,
it's like a poor man's CBC.
02:59
We can tell a lot of things
that are going on in the body
just from analyzing
someone's urine.
03:05
So be impressed.
03:07
Well, it's 95% water.
03:09
All this other stuff
that's located in the urine
can tell us a lot
about the health
of a patient.
03:15
Now you can learn how to see
what's going on with your patient
just by looking at their urine.
03:20
Okay, this is usually
much easier to do
if they have a Foley.
03:23
Or if they hand you
their specimen cup.
03:26
Did you have to do that
awkward lab
where they made you pee
in a cup
and then bring it back
in front of your peers?
I hate that lab
when you're walking down
the hallways at school
with your cup of urine,
but we've all been there.
03:37
So let's look when urine looks
all funny, right?
Protienuria
Well, that's the medical
terminology.
03:44
Uria means urine.
03:46
So what's in front of that
is what's in their.
03:48
Proteinuria.
03:50
And when the protein content
in urine
is extra high,
that tells us
your kidneys are
having a problem,
because the glomeruli
is been damaged
and protein
is leaking into the urine
that shouldn't be there.
04:04
Now, you'll see that it kind of
has a foam on top.
04:07
That's a real characteristic of a
lot of protein in the urine.
04:11
Now, there might be less
you have microalbuminuria
you can have
small amounts of protein.
04:16
You can see them
a dipstick test,
where you take a strip with
chemicals on it
and you dip it in the urine.
04:21
Not as accurate as we do.
04:23
A urine analysis
can tell us exactly
how much protein
is in the urine.
04:28
Why do we care?
Again,
it's a sign of kidneys
that are struggling.
04:32
So particularly if a patient is
diabetic,
they're at extremely high risk for
kidney disease.
04:38
So we want to watch
their albumin levels
when it's not obvious
like giant foamy
on the top of their urine.
04:44
We want to catch it
when it's micro
when it's just
a little bit of it,
so that we can make sure
we're taking care of those kidneys
as much as possible.
04:51
Alright, so that's the first one.
04:52
We started out with
foamy urine in the cup.
04:55
Now let's look at what it looks like
when it's oliguria.
04:58
Now again,
uria
means urine.
05:00
olig means
scant.
05:03
So that's an abnormally
small amount of urine.
05:05
Often because
the patient is
super dehydrated,
they've had
kidney damage
or even
shock.
05:12
Now remember,
shock is you don't have
enough oxygen
moving around the body
to meet the body's
metabolic cellular needs.
05:20
Somebody in shock,
their kidneys
are not being perfused
because nothing's getting perfused
adequately,
and that's why they put out
only a small amount of urine.
05:30
Now when there's only a
scant amount of urine,
it's generally pretty dark.
05:34
So look at the difference
in the picture there
between proteinuria
with his white foamy
and oliguria.
05:40
See how it's much more
dark and concentrated.
05:43
That's the sign
there's not very
much water in there
because there's not very much able
to be filtered by the kidney.
05:48
Now polyuria
is the exact opposite of oliguria.
05:52
Olig means scant.
05:53
Poly means
mucho,
it means a lot.
05:56
So, if abnormally
large amounts of urine,
it's often caused by diabetes.
06:02
So that's a key sign to someone
if they've lost weight,
and they weren't really trying.
06:07
And they're putting out
lots and lots and lots of urine.
06:10
That is a key cardinal symptom
of diabetes.
06:13
So the patient does sometimes
this is how we find
out that they're diabetic
through one of these
symptoms.
06:18
So we've talked about
protein in your urine,
not very much urine
and probably kind of dark.
06:23
and polyuria
they'll be lots of it
and it'll be lighter colored.
06:27
These are three examples
by observing someone's urine.
06:31
You can learn a lot
about what's going on
in their body.
06:35
Now,
dysuria.
06:36
Dys means difficulty urine.
06:38
This means...
06:39
"Oh, man...
06:40
it is painful or
uncomfortable when I pee."
I mean, often,
he's got some type of
urinary tract infection
so you feel like
you have to urinate a lot.
06:47
And when you do
it burns like fire.
06:51
So this is one of the main
symptoms people report
when they have a UTI.
06:57
Hematuria
is blood in the urine.
07:00
So red blood cells in the urine
could be from infection.
07:04
That's one of the signs
of infection,
or there could be some injury
to the kidneys.
07:09
So watch, if you see
red color urine,
is it just dark
because it's concentrated?
Or does it have blood in it?
That's when we can do a further
urinalysis.
07:17
Now you always want to compare that
to what's going on in your patient.
07:21
Was the patient in a trauma?
Have we done some type
of procedure
to their urinary tract?
If you have a patient,
who like a male patient
who has
benign prostatic hypertrophy,
they'll do surgery to help kind of
whittle down that prostate.
07:36
Now we will keep regulating
with fluid.
07:38
We'll keep draining fluid in and
draining fluid out of that bladder.
07:42
We expect that urine
to be blood blood tinged.
07:45
That's acceptable.
07:46
But if your patient is putting out
bloody urine,
and we don't know why
that's an example of
when you use your skills
to assess and figure out
what's the source of
that blood in their urine.
07:56
Now lastly,
you see that we've got
some strips next to that urine.
08:00
This is glycosuria.
08:02
That's too much sugar,
or glucose in your urine.
08:07
Now those strips are examples,
they're chemicals
that are put on a little strip.
08:11
You can dip it into the water,
pull it out,
and we can read
lots of things about it.
08:16
But the example here is
when you have too much glucose
in your urine,
you've got so much glucose in your
bloodstream for diabetics,
it's beyond the amount that can be
reabsorbed by the kidneys
in the proximal convoluted tubules.
08:28
So it just gets dumped out
into the urine.
08:32
So we've talked about
two types of diabetic urine,
even a third one.
08:37
So if I look at your urine and
there's protein on it,
it will look...?
Right.
08:41
It will look foamy.
08:43
That's a pretty severe case.
08:45
That could be a sign of
diabetes
because their kidneys
have been damaged,
and we're dumping too much protein
into the urine.
08:51
We've got glycosuria.
08:54
Correct.
08:54
We've got too much
glucose in the urine.
08:57
We can see that on a dipstick test.
08:59
Because there's just so much
in the bloodstream.
09:00
It can't be reabsorbed
by the kidneys.
09:03
And so it dumps out in the urine.
09:05
And what was the third option?
Right.
09:08
A diabetic client
might be putting out
lots and lots of urine
known as
polyuria.