Understanding PaO2 FiO2 Ratio: Not all PaO2's are the same! 

Thank you so much! I just graduated as a doctor and no-one has ever taken time to explain this to me properly and i really struggled finding resources on it! Super helpful thank you!

Oh wow you have just the right voice and delivery of a great instructors/professor/teacher well done:)...kept me listening

Finally someone "actually" explained these PaO2 and FiO2 . Tnx Doctor 🙏🙏🙏

I am not a nurse, still i am benefiting from this beautiful video. Thank you. ☺

PaO2 is the O2 partial pressure in the arterial blood, PAO2 (capital "A") is the partial pressure of O2 in the alveoli. I noticed you used the wrong one in the video and they are not equivalent (cf.the Aa gradient). Be careful it can get very confusing if you start switching them up!

Best video on Pa02

Thank you so much for an explanation clear enough for a lay person!

Thank you so much! Great video

I wish I had your ad a professor when I was in nursing school Tx!!

thanks a lot ,,, you’ve made so clear ,,, salute

This video is incredible. Thank you!

you are great teacher. thank you

This. Was. Amazing. Thank you 🙏🏻

thank you very much, that was really helpful

"This is an alveoli." Actually, it's an alveolus (singular) :-) Otherwise, a much needed clarification for what is often poorly understood. What is needed is to integrate the amount (volume) of oxygen transport capacity, i.e. hemoglobin. An anemic/hemorrhagic patient will have the same PaO2 and SaO2 readings, but have a total reduction of oxygen volume. For example an SaO2 of .98 x 1.34 (coeff) x 15Hb = 19.7 mL O2/dL The same SaO2 of .98 x 1.34 x 7Hb = 9.2 mL O2/dL. Despite an unchanged PaO2 and SaO2, the oxygen volume is 50% less.

Big Thanks.

Thanks 🎉🎉🎉

Thank you !!!!

💐

This is really great thank you!