Platypnea-Orthodeoxia Syndrome
HTML-код
- Опубликовано: 30 июл 2024
- 😍🖼Animated Mnemonics (Picmonic): www.picmonic.com/viphookup/me...
- With Picmonic, get your life back by studying less and remembering more. Medical and Nursing students say that Picmonic is the most comprehensive and effective way to bridge learning and test prep...
Disclaimer: I use affiliate links....
►👨🏫💊Antibiotics Lectures: www.medicosisperfectionalis.c... ... Check out my brand new "Electrolytes" course at www.medicosisperfectionalis.c... and use the PROMO code: ELECTROLYTES50 to get a 50% discount. ► Right Now! You can get access to all my hand-written hematology video notes (the notes that I use on my videos) on Patreon...There is a direct link through which you can view, download, print and enjoy! Go to / medicosis Pulmonary arteriovenous malformations are found in patients with liver cirrhosis, probably due to the absence of a hepatic factor.
So, liver Cirrhosis will affect the blood vessels in the lungs by 2 different mechanisms:-
1) Absence of a hepatic factor which leads to arteriovenous malformatins in the lung.
2) Production of Nitric Oxide (NO) which is vasodilatory in effect, which will dilate the arteriovenous shunts in the lungs, increasing the chance of blood passing quickly without sufficient gas exchange, which furtherly worsens the problem.
Ventilation perfusion mismatch will occur (Shunt Physiology)
My FAVORITE BOOK to study Pathology for step 1 USMLE is Goljan , you can check it out here: goo.gl/9ojg6M
Do you know what stethoscope do I use? This is my favorite and it is great, way different than my old one. Check it out here: goo.gl/wH9azm If you like my videos, please consider leaving a tip at www.paypal.me/perfectionalis/
► Visit my website: www.medicosisperfectionalis.com/ My Favorite Productivity App: airtable.com/invite/r/2zH40fus/ 📱Save on your mobile phone bill: fbuy.me/q6bMj 🏦 Qbank (TrueLearn): truelearn.referralrock.com/l/...
When the patient, who has hepatopulmonary syndrome, is standing, the gravity agravates the shunting. And, when he lays down, the perfusion decreases (more than the ventilation), and the V/Q gets more balanced and he feels better. have i got that right?
Fernanda Pasolini True...You've explained it so eloquently!
hahahahah :)
The comment explained what the video failed to !!
I think this is quickly becoming my favorite channel for medical school. You cover it all so simply and thoughtfully! (glad for the winter break to have discovered you)
Wooow! That’s amazing...Thanks for the winter break 😁...Good luck with everything 👍👍
@@MedicosisPerfectionalis Thank you so much!
My pleasure 😇...Please consider sharing when you have time, it really helps...Thanks!
@@MedicosisPerfectionalis I'll let my classmates know ;)
Thanks, dear...I truly appreciate it!
Pathogenesis : In cirrhosis there is decrease metabolism of NO which in turn causes vasodilation, pulmonary vasodilation will increase perfusion leading to V/Q mismatch--->Triad cirrhosis+ Shunt+hypoxia , another mechanism is decrease metabolism of androstenedione and its increase conversion to estrogen which causes opening of new capillaries with perfusion in absence of ventilation
Other than the causes you mentioned in the video, can I say every diseases/condition leading to V/Q mismatch would cause platypnea-orthodeoxia syndrome?
thanks for the video, perfectly explained. I don't get the mechanism with patent foramen ovale. It must be a change from normal left-right shunt when lying down to right - left shunt when sitting up. The shunt must change due to increased pressure in the right atrium in the upright position. I don't get why there's more pressure in the RA when upright, shouldn't it be inverse with increased RA pressure in lying position?
I hope you still are online Doc. Id like to find your video on trepopnea but i can not.
Please where I find discuss about orthopnea
thank u sir ...today I wasn't able to answer properly the term orthopnea and my friend laughed at me ...I felt very embarrass and low confident ..but now i know properly and I can answer .so thank u again ..
That’s excellent...Don’t be embarrassed by your friends...You will probably be more successful in the future...Keep at it 👏
THANK YOU Medicosis 👏 you make it so clear
My pleasure 😇
thankyou so much, very helpful to understand pathophysiology
You’re very welcome! Keep studying and be happy! 😃
Helpful thank you 😍
My pleasure!
pulmonary emboli cause "decreased perfusion" and the symptom is platypnea, but the vasodilation of the hepatopulmonary "increases the perfusion" , but why the symptom is also platypnea
Man make new videos pls.... You are very Informative... Concise and spot on
Thanks a lot...I am trying my best uploading quality videos as much as I can...I will try to do more...Please share! Thanks
Is it possible for platypnea without orthodeoxia?
Really excellent explanation
Thank you so much 😊
You are seriously good
Thanks, dear...Pleasure share my videos with others!
thank you for this video, i was gonna ask about this syndrome
Thank you!
Please upload more clinical examination vedios systemwise, you are very good at...
Sure!
When you said I'm erect and then paused. The pause killed 😂
LOL! This is so funny! 😊😂
thank you
Absolutely!
Amazing ❤️💐
thx for explanation , but if you can complete the subjects related , please
A whole Pulmonology playlist is coming out soon:)
I have this. Please what does this mean for me?
You should see a doctor and tell him about your problems. Googling isn't the answer to your problems, a professional help is.
I Love how you speak
Really? 😳
I couldn't figure out what is platynea before...until I watched your video.
Great...Thanks a lot for watching!
what if the patient happens to have fluids in the lungs? how do you drain it?
Thoracentesis
Thanks. Not many vids on this
Thank you 😊
excellent
Thank you!
Pls can u explain pnd
I've been trying to get the V/Q missmatch for so long, and no videos I've layed it out so nicely. Could you also answer this silly question: since it's a shunt, by what mechanism does the embolism cause it? Blood then bypasses that portion of the lung via some other route that has less oxygenation?
Can you phrase the question in a different way? I don’t seem to understand.
@@MedicosisPerfectionalis Thank you greatly for the reply! Yes, sorry, my question wasn't coming out right 😂 What I was confused about was that recurrent pulmonary embolism was a possible cause of platypnea, but a PE doesn't truly fit under the low V/Q (if I am thinking correctly), as perfusion is blocked but ventilation can still occur. Does that mean that platypnea is not necessarily caused by a shunt, or does recurrent PE lead to a shunt? Hope this question makes more sense :-)
@@neuroxplorein It's been a year now but I'm commenting in case you still have not had an answer to your question. I think PE would cause a high V/Q rather than a low V/Q because ventilation is not affected during PE. The problem is in the pulmonary arteries which are blocked by the clot. The portion of the lung that has blocked arteries will still have air in their alveoli but will be unutilized because there is no blood flow to that area, therefore increasing the "dead space" or an area with high Ventilation and low Perfusion, thus a high V/Q ratio. To answer your question, there are many other different causes of platypnea, and also many other different causes of shunting. Platypnea then "can" be caused by a shunt, particularly a shunt involving gravity as this video showed.
@@sollerajr Thank you!
@@neuroxplorein the shunt that is caused by PE results in hypoxia because the blood returns back to heart through another new growing blood vessels to heart but without passing through lungs. I hope i touched what makes it clear to you .
Why you didn't do gastrointestinal vedieos
I will!
Your slides are taught in ain shams med school mashallah brother
I am 2000% certain i am
Suffering with this!! What tests can I ask for???
Platypnea is a symptom/ sign.
A good history and physical exam should confirm it. Next step is for the doctor to try to find what the cause might be.
Can this be something that starts and gets worse over time?
This is wild! Seems my doctor is not educated in this, as I’ve been asking for help for some time for this and being blown off.
Could be more clear
But good video, thanks
all definitions, no explanation
Please make videos a little fast , too slow to maintain concentration
Thanks a ton for your valuable feedback!
I will!
In the meantime, please click on the gear ⚙️ icon and choose 1.5x or 2x
Why’s the attitude?
sleepy Dr
i do admit the explanation is good, and clear, but gods I want to slap u to stop unnecessary weird and too long speaking