00:00
So remember that bilevel positive airway pressure, BiPAP? It's delivered by means of that
tight-fitting mask. That was already on our chart. So now we're just reviewing information that
you already know. Cool. Because we know that repetition is the best way for you to retain
information. A BiPAP machine can also be considered a type of ventilator. Now it's not as super
fancy as a ventilator we use for a patient who's intubated, but sometimes someone will refer
to it as a BiPAP machine or a ventilator. That's the one that's capable of delivering 2 airway
pressures, an inspiratory one and an expiratory pressure. So, I want to talk about the
inspiratory pressure or the IPAP. That's what that means. We're going to look at the IPAP and
the EPAP which is the expiratory pressure. Remember, it's higher pressure on inspiratory,
right, so higher effort, higher level when they're breathing in because that shouldn't increase
the workload of the patient. So, pretty normal for you to set a patient at 12 cm of water. So,
that can be elevated, it can be crinked up higher if the patient needs it depending on their
response to the IPAP. Okay, so we can go all the way up to 20. So just to give you a frame of
reference, the normal pressures for the inspiratory pressure would be somewhere around 12,
it's pretty average but it can go as high as 20. Now what about the expiratory pressures?
Remember it's similar to peep on CPAP and it is usually set between 4 and 6. Okay now start
and look and compare those. Inspiratory is usually 12, expiratory is half or a little less than
that. Now pause the video, see if you can recall why is that. Why do we have the expiratory
pressure like half or less than the inspiratory pressure? Okay cool. You've got that concept
which we repeated throughout the video, now you're catching on to be able to answer the
questions on your own. Now, not all BiPAP settings are alike. There are several modes, we
call that, several different options or settings are available on BiPAP machines. Now they
might be spontaneous, they can be spontaneous with timing or there could be pressure control
like it will respond to the pressures. So it can be pressure controlled and time. Now these
settings differ depending on the model and brand of the BiPAP and these settings will be
specifically prescribed by the physician. So, inspiratory pressures, we got kind of a summary
here. Inspiratory pressures start 10-15, usually 12 is pretty average, maximum is 20-25.
02:50
See IPAP greater than 20 puts you at some unique risks for a patient. Remember when you
learn CPR and they always told you don't overinflate the patient's lungs because you could
have gastric distension, that's what you could cause. Then you have an increased risk for
aspiration. Also, it's going to mess with the diaphragm because if you have blow all this up the
diaphragm doesn't have as much room. So that's why we don't really want to be greater than
20 definitely for not very long because we're going to risk what, gastric distension, aspiration,
and the diaphragm has a decreased excursion. That means it doesn't have enough room to
function and do what it needs to do. So those are great reminders for what you'll see in
inspiratory pressure. Now expiratory pressure starts at 4-5. Remember, it's a lot less than
inspiratory pressure, maximum about 10-15. Now this is for your average BiPAP patient.
03:50
There could be extreme cases, you're going to collaborate with a healthcare provider and they
maybe outside of this range but your healthcare provider is going to have a valid rational for
why they're outside of this range. Because it's all about personalization. A BiPAP device can
deliver pressure that matches the patient's individual breathing pattern because it uses this
complex algorithm and chart. It's really cool. Now that's a fancy BiPAP. Right? But this allows
for a really individualized delivery of oxygen therapy for each patient. So we can make it more
comfortable and effective. Now, as comfortable as you can be with a mask strapped on your
face and having respiratory trouble, but the BiPAP gives as many more options than a CPAP
does. Oh, now we get to talk about working with some of my favorite people in the hospital.
04:44
When you have a respiratory patient, a respiratory therapist, you with them make an awesome
team. So, always get to know the respiratory therapist, respect their level of expertise
because they know a lot; about the lungs, about respiratory therapy, oxygen delivery methods,
learn from them. They are a wealth of information and together the two of you as a team can
provide even better care for your patient. Because this is not a normal type of treatment for
your patient. This is going to seem kind of uncomfortable for them. They may need a fairly
long adjustment period to this type of therapy, it's just not natural to how this mask strapped
to your face with these different pressures blowing in your mouth. So, be patient with your
patient and understand that this could be difficult for them to adjust to. One good strategy or
intervention is allow the patient, if they can, to self-apply the mask. So hand in the mask, let
them be in control of putting it on. So you want to start with possibly about 2-3 cm of
inspiratory pressure. That's the IPAP. Remember we're going to start slow. So give them
control by allowing them to put on the mask and then gradually start those inspiratory
pressures at like 2-3 cm. Remember, we're going to end up higher than that, but you want to
just start them off solely so they kind of get the feel and get adjusted to it and get used to it.
06:20
Now if their oxygenation is adequate, then the expiratory pressure could start at zero. So
we'll just have a little bit of pressure on inspiratory and zero on expiratory if the patient can
tolerate it and maintain in appropriate oxygenation. Now gradually and slowly, you're going to
increase that expiratory pressure, just what you need to do to maintain the oxygenation.
06:45
Now next, you're going to gradually increase that inspiratory pressure. We want it to be
higher than the expiratory pressure because our goal is to increase that tidal volume, the
amount of breath they are taking in. So now you're gradually increasing that inspiratory
pressure. So, patients can be given breathing treatments with like adrenergic or other types
of medications as required through the BiPAP machine. So we're not going to have to take that
off of them if they need to get medications that are right through the machine.