So let’s go with blood pH as the
next thing we’re gonna discuss.
Blood pH is so very important because blood
is gonna be delivered to each cell in the body.
Therefore, if blood pH is off, you could alter
the pH of a lot of tissues throughout the body.
Normally, blood pH be somewhere
between 7,35 and 7,45.
So let’s go see some examples of what
changes happen with alterations in blood pH.
If you add hydrogen ions to the blood,
you get an acidemia.
So an acidemia is a pH less than 7,35.
So if you want to look at these
in terms of how much acid is added.
Let’s just give an example
of more of our acidic gnomes.
What’s that gonna do is tilt
the pH down to a lower level.
If you think about reducing the amount of
hydrogen ions, these now becomes more basic
and you have an alkalemia.
So this is a pH above 7,45.
Be think about this in terms
of our tutor tauter example,
it means that you have more basic components
than you have acidic components
which tilt the scale over this direction.
Therefore, really we have two different
conditions we needed to focus on.
We have acidemia and alkalemia.
The emia, the -ie portion, the -mia portion of
the alkalemia that is saying where it is
problematic such as the blood.
When you look at blood pH, this kind of scale work
very well to be able to emphasize,
how many more hydrogen ions you have at
low pH as compared to high pH is.
So in this case, that we have blood pH on the X-axis
and we have hydrogen ions on the Y.
You can see this log rhythmic scale.
if you traumatically increase
the number of hydrogen ions,
you reduce the pH.
As you have a decrease in the
amount of hydrogen ions,
then you an increase in pH.
You wanna think about, where though
the hydrogen ions come from?
This is gonna be a very important component
when trying to diagnose someone’s
acidemia or alkalemia.
Where are the hydrogen ions from?
So always ask yourself that.
The second thing is, is we are gonna be
able to buffer some of those hydrogen ions.
To buffer something means that you
will bind it to another molecule.
You take it out of concentration.
It doesn’t mean that the hydrogen ion has gone away.
It just means that you’ve bound up.
In that case, you wanna think about,
where are the buffers?
And finally, if there are any basis
that were added to the system,
you’ll think of where are they coming from?
So if you always think about, okay,
where the hydrogen ions coming from?
Where are the bases is coming from?
Where is the HCO3- coming from?
You’ll be able to help your diagnostic
procedure to be able to figure out,
why you have an acidemia or an alkalemia?