Alright, hopefully, you've invested some time in studying those concepts.
Now, we're gonna wrap up the video.
Pulse oximetry assesses oxygenation by measuring
how much of each of the red blood cell's hemoglobin is bound to oxygen.
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.
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.
Now, carbon monoxide combines with hemoglobin to form carboxyhemoglobin.
That is no good for the patient. In fact, it's deadly.
Capnography is a noninvasive way to measure the partial pressure of carbon dioxide at the end of exhalation.
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.
Because special sensors are required in the nasal cannula or the ET tubing to measure end tidal CO2 in real time.
Thank you for watching our video today.