Hey hey, there, friend! Christina here with
and in this video we are diving into the pathophysiology of pneumonia. And, if you want more video trainings for
more med-surg disorders that you’ve gotta know in nursing school – then you’ll definitely
want to check out the NursingSOS Membership Community. It’s packed with videos, cheat sheets and
study guides to walk you through nursing school step-by-step. I’m here to hold your hand through nursing
school. And I can’t wait to see you inside. Now, let’s get into the pathophysiology of
pneumonia. Alrighty, so pneumonia is a super common condition
that you’ll see at clinical. All it means is that there is an infection
and inflammation in the lungs. And this causes several problems, which we’ll
cover in this video. So we’re going to talk about the pathophysiology
of pneumonia by walking through it step-by-step. Now I just made up these steps for you to
learn it easier, so you won’t find them anywhere else. Just so you know, they won’t be in your textbook
or anything. Alrighty, so step number 1 of pneumonia is
there is an invasion. Dun, dun, dun. So this invasion can be a bacteria, a virus
or fungi, so it’s just a pathogen that sneaks it’s way into the lungs, OR it can actually
be caused by an invasion of chemicals or something else that causes irritation of the lungs. For this video, though, we’ll just focus on
pneumonia caused by pathogens, because that’s the one you’ll probably see the most at clinical. So that’s step one of pneumonia: there is
an invasion of a pathogen. Now, step 2, is the inflammatory response
is triggered. That good old inflammatory response. So when this happens, the blood vessels dilate
and the blood vessel walls actually separate and become leaky (causing what we call “capillary
leak”). So the blood vessels dilate and become leaky,
so that all the white blood cells can move out from the blood vessels, and go into the
lungs into battle to fight off the invading pathogens. So that is actually step number 3 of this
process, capillary leak. And now, step number 4, is edema and exudate
is created. So with all that capillary leak, a lot of
fluid is moving from the blood vessels, into the lungs, and those white blood cells are
fighting and fighting and fighting to get rid of those pathogens. So this causes a lot of exudate or debri build
up inside the lungs – all of those dead pathogens and white blood cells. So now, there’s a lot of gunkiness inside
the lungs, all that fluid from the blood and the exudate and debri from all the blood cells
and pathogens. And step number 5 of this process, is reduced
gas exchange. So we know that the lungs are responsible
for gas exchange: getting oxygen into the blood and removing carbon dioxide. But with all this fluid and debri build up
inside the lungs, it can’t get oxygen or get rid of carbon dioxide as well as it should. So this can lead to respiratory acidosis because
of all of that carbon dioxide build up in the body – which causes the blood to become
acidic. And if pneumonia continues and that pathogen
enters the blood stream, then sepsis can occur. This is step number 6: sepsis. And sepsis comes with it’s own pathophysiology,
signs and symptoms, assessment and interventions. So if you need a refresher on that, you’ll
definitely want to check out sepsis pathophysiology video we’ve got for you on that. Definitely check it out! So those are the steps of pneumonia: step
number one: there is an invasion of a pathogen. Step number 2: the inflammatory response is
triggered. Step number 3: capillary leak occurs, which
leaks out blood cells and fluid. Step number 4: there is edema and exudate
building up in the lungs. And all of this causes impaired gas exchange,
which is step number 5. And if the pathogen makes it’s way into the
blood stream, that leads to step number 6, which is sepsis. I hope that helps to clarify this whole process
of pneumonia for you! Like I said before, it you want even more
videos like this and you want me to walk you through nursing school step-by-step, you’ll
definitely want to check out the NursingSOS Membership Community. I’ll pop a link down below in the description. I can’t wait to see you in there! And as always, if you liked this video, let
me know! Write LOVE in the comments below, and make
sure you subscribe and hit the bell so you never miss a video. Thanks for watching, friend! Now go become the nurse that God created only
YOU to be be. And I’ll catch you right back here next time,
on the nursing school show, take care.

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