Alveolar-Arterial Gradient | (A-a) Gradient | Respiratory Physiology & Pathology..Pulmonary Medicine
The A-a gradient…Alveolar-arterial gradient is the difference between the partial pressure of oxygen in the alveoli (PAO2) and the partial pressure of the oxygen gas in the arterial blood (PaO2)…This A-a gradient can help differentiate between intrinsic restrictive lung disease and extrinsic restrictive lung disease.
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Пікірлер: 82
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I love your humor while also explaining things in a way that I can grasp. Bravo!
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Dude your videos are amazing. I'm doing residency and going for my IM final board exam in 3 months. Brushing up on some of the topics I haven't read in a while can be a pain. Seeing your lectures for a topic I need to review provides me with so much relief. Wish I knew about your channel in medschool. Keep it up.
@ramlaessa9756
Жыл бұрын
am R one Im
@tocilizumab5661
Жыл бұрын
@@ramlaessa9756 it'll get much easier with time, believe me.
thank you sir. not only have you taught this topic well, you've also taught me the art of sass.
@MedicosisPerfectionalis
2 жыл бұрын
Haha 🤣
Your way of making things easier is great.
@MedicosisPerfectionalis
4 жыл бұрын
Thank you so much 😊
Thanks a lot! you always create good stuff. Keep up the good work!
@MedicosisPerfectionalis
3 жыл бұрын
Thank you so much 😊
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@MedicosisPerfectionalis
3 жыл бұрын
My pleasure 😇
Hi, thanks a lot for your videos! Where can we find the answers to the questions to put at the end?
Thank you! Currently watching during the COVID 19 outbreak because my in person classes have been moved online and these videos are helpful!
@MedicosisPerfectionalis
4 жыл бұрын
Thank you so much 😊 for watching!
15:20 when he says answers are in the next video, what video? I looked in "Ventillation/Perfusion Ration" and didn't see anything
The sass in this is real ... and hilarious
@MedicosisPerfectionalis
3 жыл бұрын
Haha 😂
Thank you for making it easier.
@MedicosisPerfectionalis
4 жыл бұрын
My pleasure 😇
yea man good stuff it makes sense and its funny
thank you for the video but I can't find the answers to the questions in final section, they were not in your next video.
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Still cant really understand T.T .....guess I’m screwed
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@MedicosisPerfectionalis
Жыл бұрын
Thank you 🙏
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Жыл бұрын
:)
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Жыл бұрын
I appreciate you!
Nice video.
@MedicosisPerfectionalis
4 жыл бұрын
Thanks 😊
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@MedicosisPerfectionalis
4 жыл бұрын
👍👍
Kindly give referneces of this charts ? Books?
Thank you for the video! In class, we were told that raising oxygen fraction increases the A-a gradient. Would you be able to explain that please?
@MedicosisPerfectionalis
4 жыл бұрын
Can you give me an example?
@AcousticInterpretare
4 жыл бұрын
@@MedicosisPerfectionalis This might be due to diffusion limitation along the alveolar capillaries.
@tijanitunkara2553
4 жыл бұрын
Yess that is only true when you have high VQ mismatch or even shunting.. Due to diffusion problem.. That’s why it’s more important to give high PEEP than fio2.. when their a shunting, increasing FIO2 will only increase PAO2 but little or no effect on PaO2 causing your A-a griedient to be in the 30’s
Please solve my doubt We say that in case of vq defect the aa gradient increase But how does that occur in case of ventilation block I mean when ventilation is zero, there is no air reaching the alveoli for getting exchanged with the blood so the arterial blood po2 (i.e “a” of the Aa gradient drop) But if the ventilation is zero, then there is no air reaching the alveoli and then shouldn’t also the alveoli po2 (i.e “A” of Aa gradient also decrease as there is no incoming oxygen)? And if both A and a are decreasing, then how come (A-a) is increasing
Hi! Thanks for the video where can i find the answer?
@MedicosisPerfectionalis
4 жыл бұрын
In the next video in the Pulmonology playlist
Can someone please post the next video link ty
@foodiesworldUSA
Жыл бұрын
@medicosis perfectionalis
@MedicosisPerfectionalis
Жыл бұрын
They are presented in order in the pulmonology playlist.
i thought P Aco2=P aco2..? How can P Aco2 equal Paco2/0.8 in this equation???
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@MedicosisPerfectionalis
2 жыл бұрын
Thank you ☺️
What will happen to the gradient in emphysema
@MedicosisPerfectionalis
Жыл бұрын
Widened A-a gradient.
"Here's another stupid formula" LOL Love this video!
@MedicosisPerfectionalis
4 жыл бұрын
Thank you so much ☺️
i didnt understand anything you said
on Monday💔 i have exam about this subject online can you do this examInstead of me?😔😔 Thanks👍
@MedicosisPerfectionalis
4 жыл бұрын
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4 жыл бұрын
@@MedicosisPerfectionalis I gave my email and password on classroom and do it😔😭
@MedicosisPerfectionalis
4 жыл бұрын
You can do it, my friend! Don't be afraid!
@xoxo2971
4 жыл бұрын
@@MedicosisPerfectionalis i study on my lectures and watched your beautiful videos for you ,so i feel l can do it..thank you very much doctor🥀💡
@MedicosisPerfectionalis
4 жыл бұрын
You’re welcome 😇 Good luck 🍀
The 2 formular for A-a gradient don't match up.
@MedicosisPerfectionalis
4 жыл бұрын
What do you mean?
@littlegiant101
4 жыл бұрын
Medicosis Perfectionalis when I used 0.3 x age and when I use age/4+4 it’s different results. Eg. Assuming pt is 22, using 0.3 x 22=7.3, but when I do 22/4+4 it turns out to be 9.5.
@MedicosisPerfectionalis
4 жыл бұрын
They are not supposed to match exactly.
@tijanitunkara2553
4 жыл бұрын
Go with the agex0.3 that’s what everyone uses
Dude you should be a comedian.:)
@MedicosisPerfectionalis
3 жыл бұрын
Haha 😂 Thank you so much 😊
is an increased dead space also a kind of V/Q mismatch? Also ARDS? But they don’t response to 100% oxygen // what does it mean by V/Q mismatch response to 100% oxygen? Thank you in advance
@MedicosisPerfectionalis
4 жыл бұрын
Watch my video on hypoxia.
@tijanitunkara2553
4 жыл бұрын
Usually VQ mismatch responses to O2.. when VQ mismatch is extremely low is call Dead space which doesn’t respond to oxygen unless you resolve the perfusion (obstruction) problem.. when VQ mismatch is severely high, it call Shunting and shunting doesn’t respond to oxygen either. So that’s why we use high PEEP to help with that.. I hope this help.. I wish I could explain it better but I’m only an ICU nurse
@gegeeh.a8328
3 жыл бұрын
@@tijanitunkara2553 Zero VQ is shunting
Lmao I love this video
@MedicosisPerfectionalis
Жыл бұрын
Thank you 😊
lol this guy is kind of a jerk but I love it
@MedicosisPerfectionalis
3 жыл бұрын
Hehe 😜
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You talk too fast .. sry its bad
@zainab-jg9vl
Жыл бұрын
You can make it slow):