Okay. Sometimes, when I look at a chart
like this, it gets a little overwhelming.
So let me give you some tips.
Just start from the left and work your
way over. Let's look at that first column,
talking about red blood cell, hemoglobin,
and hematocrit. Okay, cool.
We know those, right? We're
familiar with those already.
Now I've got a red bar over there
that says we actually measure these,
and that's an important note we'll talk
about in reference to the next slide.
But for now, know that we can measure
the red blood cell, the hemoglobin,
and the hematocrit.
Next column; Blood, Blood and Blood.
Right. That tells us where our sample is.
It's always important to know where
your sample's coming from.
So we've got red blood cells,
it's in the blood.
The value is 4.89.
Now there's something different in this
one as compared to white blood cells.
Remember, white blood cells
we talked about being 5-10,
but that really represented 5,000-10,000.
When you see 4.89 here, that's not 4,000,
that is 106, so that's 4,890,000 units.
Now still, healthcare professionals
will report that as 4.89.
I just wanted you to know this is different
than white cells. It's not thousand.
It's the millions of units there.
So the normal reference is 4-6.10.
So we have a value of 4.89.
Normal is 4-6.10. We're right on target.
Let's look at the next value. Hemoglobin.
All right? This is going to tell us about
the oxygen-carrying capacity.
This is where you have 2 values
to be familiar with.
It's different whether you're
a male or a female.
Males have a higher hemoglobin range.
So they're 14-17.
Females are 12-15 for this particular lab.
So if we look at this, you'll notice we picked
a value that was right in the middle.
So we don't need to know for sure
if this is male or female.
We know that this is still normal,
whether the patient is male or female.
Hematocrit is that percentage, right?
The hematocrit is 45.2.
Now looking over to the right, again,
we picked a number that was normal,
whether they were male or female.
But when you see test questions
or real patients,
you'll need to know their
gender to make sure
that their H&H is within the normal reference
range for their gender; male or female.
Now, I know we've talked about this before,
but I want to keep reminding you.
I know that you have different
textbook in nursing school
and so the ranges are different in
whatever textbook you're looking at,
but the same thing happens in real practice.
Every lab may have a little bit different
normal reference range.
The cool part, their normal reference
for that particular lab
will be listed right on your lab results.
So pay attention to that lab's normal
references and you'll be fine.
And unlike nursing school, when you
get tested on the normal ranges,
when you're in real practice, every
lab posts their normal ranges
right next to your lab results.
Rock on. So that's awesome.
One less thing for you to memorize,
but you'll know the general ranges.
Now, you'll see looking at this chart,
looks pretty familiar,
but now you see the blue bar
that says "calculated."
These are the values I talked about
that you probably kind of looked at,
but didn't really know what to do
with them. That's okay.
I'm going to lay it out for you, so
you'll be able to look at these
and understand where they're coming from.
Okay, so MCV. These are all
from the blood, right?
A value of 92. That's within normal range.
When you look at each one of these values,
you checked and reference it
with a normal reference range.
MCH is 30.2.
Look at the normal reference range.
You got it, 27-32. This is normal.
Looks like it might be a little low, but it's
still within the normal reference range.
Now we're looking at the RDW CV, 11.5 is still
spot on for that percentage to be
within the normal reference range.
Now, how useful was this going through this?
If you don't know what MCV is or
MCH or MC -- it's just letters.
Don't worry. This is just an example
to introduce you to those
and I wanted you to have the reference,
so you know that these are calculated.
The previous slide we talked about,
red blood cells and hemoglobin and
hematocrit that are actually measured,
these are drawn from calculations.
Now you'll never have to do the calculations
because lab will do them for you.
But we'll break those down
just a little bit later.