Wow….well explained !!! I was just learning about this in lecture and our professor was like “ you need to know why !!!!” This made it so clear !!!!! I’m having a hard time with my exams … my last exam I got a 70:(I need a better studying method
the normal range in A-a is under 10 mmHg in 21% and under 150 mmHg in 100%? What about 50% fio2 or 60% (how do u calculate the normal A-a ranges according to the different fi02 you set)?
Hello, Let's just take 300 mmHg for our barometric pressure, and say that water vapor pressure is zero, breathing room air (21%), and let's just go with a super low PaCo2, 20. Using these variables we'll basically have a max PAO2 @ 27,000 feet. 300 X .21 = 63 mmHg, but we then have to take into account CO2, so 20 X 1.25 (or 20/.8) =25 mmHg. 63 - 25 = 38 PAO2...which means our arterial oxygenation will be less than 38 mmHg. Using the 30-60-90 rule, a PaO2 of 30, will result in an approximate SpO2 of 60%. I'm going with 60%. Fun question, thanks for watching and asking it.
@@awaisshafi6541 A PaO2 of 30mmHg equates to an approximate SpO2 of 60%. A PaO2 of 60mmHg equates to an approximate SpO2 of 90%. Very useful in estimating PaO2 with SpO2.
Great video! Also I enjoyed the video on needing a bachelor’s, I think it’s a good idea to get that eventually! Did you read how the NBRC is allowing calculator’s on board exams starting 2020. What are your thoughts on that??
I did! I'm indifferent. Have always thought it was silly to not allow the use of a calculator, especially considering the complexity of the relevant formulas. However, I also appreciate the application of formulas instead of being able to get the "right " number from the formula. For example, would much rather my students be able to tell me the importance and application of the Total O2 Content formula, instead of being able to calculate it, but not know WHY they're calculating it and the importance of the results. Does that make sense? Thanks for watching and for commenting!!!
Hey Max. Yes, same numbers just divided by instead of subtracted. Indication of severity of shunt is indicated by an increased P(A-a)O2 gradient and a decreased a/A ratio. You can't have one without the other. Your P/F ratio will tell you the same thing. Decreased P/F ration = decreased A-a gradient = decreased a/A ratio.
Probably a few reasons: 1) I've always struggled with the volume of my voice. 2) Early in making videos I worried about my crappy mic. 3) And mostly, I'm extremely passionate about RT, so I struggle to contain my excitement when talking about concepts. 4) I assume that most viewers understand the volume control on their device. I've learned alot since 2020. So, it's probably a mixture of all of that, and at the end of the day, I'm extremely grateful for you watching and providing the valuable feedback. Go Be Great!
I learned when a patient is on an FiO2 greater than 60%, I did not have to divide the R quotient but just subtract the PaCO2….. Can you verify??? Did they stop doing this??? Help!!!!
This makes it so much easier to understand than text and power points.
Wow….well explained !!! I was just learning about this in lecture and our professor was like “ you need to know why !!!!” This made it so clear !!!!! I’m having a hard time with my exams … my last exam I got a 70:(I need a better studying method
Awesome! Thank you!!! Your video just made this so much easier to understand.
Here to help my man! Thanks for the feedback.
Yes, yes, Yes! Thankyou for the clear concept💛🌻🐝daily dose of awesomeness. Much love & respect
Wow, Thank you! This helped me understand so much!
Perfect! Glad it helped and thank you for watching!!!
Awesome explanation!
Thank you very much!! Makes so much sense. Well done!
You're welcome! Thanks for watching and for the kind comment.
Do you recommend becoming an AARC member as a student? I see they have a ton of educational resources, and I’m thinking about joining for that alone.
Thank you sir
love it
Thank you sm
the normal range in A-a is under 10 mmHg in 21% and under 150 mmHg in 100%? What about 50% fio2 or 60% (how do u calculate the normal A-a ranges according to the different fi02 you set)?
GM, Can you go over some practice calculation questions? Alveolar Air Equation, A-a Gradient and Arterial Oxygen Content.
so helpful thank you!
Thanks a bunch
thank you bro
Help, please!!!! PO2 140, FiO2 90, peep 13 PC-AC mode.
Decrease FiO2.
At 27000 feet altitude PO2 reduce to 1/3rd of atm pressure of 250-300 then arterial oxygen will be?
100%
90%
80%
60%
40%
20%
Kindly answer this
Reply sir??
Hello, Let's just take 300 mmHg for our barometric pressure, and say that water vapor pressure is zero, breathing room air (21%), and let's just go with a super low PaCo2, 20. Using these variables we'll basically have a max PAO2 @ 27,000 feet. 300 X .21 = 63 mmHg, but we then have to take into account CO2, so 20 X 1.25 (or 20/.8) =25 mmHg. 63 - 25 = 38 PAO2...which means our arterial oxygenation will be less than 38 mmHg. Using the 30-60-90 rule, a PaO2 of 30, will result in an approximate SpO2 of 60%. I'm going with 60%. Fun question, thanks for watching and asking it.
Amazing💕💕
Kindly explain 30 60 90 rule
@@awaisshafi6541 A PaO2 of 30mmHg equates to an approximate SpO2 of 60%. A PaO2 of 60mmHg equates to an approximate SpO2 of 90%. Very useful in estimating PaO2 with SpO2.
Great video! Also I enjoyed the video on needing a bachelor’s, I think it’s a good idea to get that eventually! Did you read how the NBRC is allowing calculator’s on board exams starting 2020. What are your thoughts on that??
I did! I'm indifferent. Have always thought it was silly to not allow the use of a calculator, especially considering the complexity of the relevant formulas. However, I also appreciate the application of formulas instead of being able to get the "right " number from the formula. For example, would much rather my students be able to tell me the importance and application of the Total O2 Content formula, instead of being able to calculate it, but not know WHY they're calculating it and the importance of the results. Does that make sense? Thanks for watching and for commenting!!!
Respiratory Coach makes total sense! Thanks, I appreciate you and your videos🤘🏽❤️
Sir can u explain ILD
Joe is the Pao2/PAO2 ratio the same thing ?
Hey Max. Yes, same numbers just divided by instead of subtracted. Indication of severity of shunt is indicated by an increased P(A-a)O2 gradient and a decreased a/A ratio. You can't have one without the other. Your P/F ratio will tell you the same thing. Decreased P/F ration = decreased A-a gradient = decreased a/A ratio.
@@RespiratoryCoach Thank you
@@RespiratoryCoach Decreased PF ratio or Increased A-a gradient or Decreased a/A ratio !!! I think it's this.
what is the formula to calculate PAO2?
The simplified formula is PAO2 = (Pb - Ph2o) FiO2 - (PaCo2 X 1.25)
Is there a formula to calculate PACO2 and or PETCO2 (all big letters not small), im looking into it from a dead space point of view.
Give the unitsss
why is he shouting
Probably a few reasons: 1) I've always struggled with the volume of my voice. 2) Early in making videos I worried about my crappy mic. 3) And mostly, I'm extremely passionate about RT, so I struggle to contain my excitement when talking about concepts. 4) I assume that most viewers understand the volume control on their device.
I've learned alot since 2020. So, it's probably a mixture of all of that, and at the end of the day, I'm extremely grateful for you watching and providing the valuable feedback. Go Be Great!
I'm hard of hearing so I appreciate the clarity you give in your videos! I don't need captions with your videos which is a huge deal for me.
I learned when a patient is on an FiO2 greater than 60%, I did not have to divide the R quotient but just subtract the PaCO2…..
Can you verify???
Did they stop doing this??? Help!!!!