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

Did you know that you can have a normal PaO2 and still be in severe respiratory failure? You can -- and this video will help you understand what the PaO2 and FiO2 represent and how this ratio can identify mild, moderate, or severe oxygenation impairment.

[@poincareconjecture5651]

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

[@aishafw556]

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!

[@aminmottaghizade8013]

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

[@Max-hi5fr]

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!

[@hatimho13]

well done Max ,,, I’ve noticed that as well

[@julietgallant6838]

PAO2 is Alveolar oxygen, PaO2 is arterial Oxygen. There is formula for that gradient: A-a.

[@krissyandsunny]

This video is incredible. Thank you!

[@Saezimmerman]

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

[@RarecandyyBars]

This. Was. Amazing. Thank you 🙏🏻

[@ibraheemalma]

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

[@laceybou1]

This is really great thank you!

[@ameraldhalia5623]

you are great teacher. thank you

[@vishmael1028]

Thank you so much! Great video

[@JustmeMike808]

Best video on Pa02

[@hatimho13]

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

[@Yassin-Ghassan-Taha]

thank you very much, that was really helpful

[@janainaaraujo1708]

Thank you !!!!

[@iraira7511]

Big Thanks.

[@lanced3256]

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

[@andysingh9746]

Thanks 🎉🎉🎉

[@worldsokayestmedic4568]

"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.

[@user-sc1dt4tq9o]

💐