00:00
Alright, hopefully, you've invested some time in studying those concepts.
00:04
Now, we're gonna wrap up the video.
00:07
Pulse oximetry assesses oxygenation by measuring
how much of each of the red blood cell's hemoglobin is bound to oxygen.
00:14
Remember, that's a generic one and there can be some special cases but as a general rule,
the pulse ox is gonna measure how much of the red blood cell's hemoglobin is bound to oxygen.
00:26
Now, SaO2 is the ratio of oxyhemoglobin, the good stuff, to deoxyhemoglobin, the empty ones,
because it's gonna be calculated from shining a light at a specific wavelength through the patient's tissue.
00:40
Now, carbon monoxide combines with hemoglobin to form carboxyhemoglobin.
00:46
That is no good for the patient. In fact, it's deadly.
00:50
Capnography is a noninvasive way to measure the partial pressure of carbon dioxide at the end of exhalation.
00:58
Remember, we can do that both on if the patient who's intubated with a little sensor
or we could also do it on a special nasal cannula.
01:07
Because special sensors are required in the nasal cannula or the ET tubing to measure end tidal CO2 in real time.
01:15
Thank you for watching our video today.