Ventilation Perfusion (VQ) Mismatch Explained Clearly

Understand V/Q mismatch (ventilation/perfusion mismatch) with this clear review from Dr. Roger Seheult of www.medcram.com/?Y...
This is video 5 of the five main causes of hypoxemia: VQ Mismatch.
The remaining causes of hypoxemia are explained in other lectures in this series: high altitude, pulmonary diffusion, hypoventilation, and shunting.
Speaker: Roger Seheult, MD
Clinical and Exam Preparation Instructor
Board Certified in Internal Medicine, Pulmonary Disease, Critical Care, and Sleep Medicine.
MedCram: Medical topics explained clearly including: Asthma, COPD, Acute Renal Failure, Mechanical Ventilation, Oxygen Hemoglobin Dissociation Curve, Hypertension, Shock, Diabetic Ketoacidosis (DKA), Medical Acid Base, VQ Mismatch, Hyponatremia, Liver Function Tests, Pulmonary Function Tests (PFTs), Adrenal Gland, ARDS, Respiratory Failure, Shunt, Ventilation Perfusion Ratio, Pulmonary Embolism, Pneumonia Treatment, and many others. New topics are often added weekly- please subscribe to help support MedCram and become notified when new videos have been uploaded.
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Recommended Audience: Health care professionals and medical students: including physicians, nurse practitioners, physician assistants, nurses, respiratory therapists, EMT and paramedics, and many others. Review for USMLE, MCAT, PANCE, NCLEX, NAPLEX, NDBE, RN, RT, MD, DO, PA, NP school and board examinations.
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Produced by Kyle Allred PA-C
Please note: MedCram medical videos, medical lectures, medical illustrations, and medical animations are for medical education and exam preparation purposes, and not intended to replace recommendations by your health care provider.

[@jennifertorresyee7887]

best 14 minutes ever spent! your video summarized in 14 minutes what 2 hrs of ventilation lectures didn't at my school... THANK YOU!!!

[@Medcram]

+Jennifer Torres Glad the video was helpful- thanks for the feedback!

[@buyornot543]

wow, compared to the PhD teaching at my medschool............ this is pure gold.

[@jennygonzalez1281]

I'm studying to take my Step one next month and never understood this, after a youtube search on V-Q mismatch I stumbled upon this, thank you so much! It's so clear now, better late than never! :)

[@Medcram]

Jenny Gonzalez Glad we were able to clear up VQ mismatch for you- thanks for the feedback

[@RavishingSailor]

Thank you so much for all your videos. I'm in my third month as a first year pulmonary/CC fellow and have been using your videos to reinforce concepts that during residency I found very confusing. You have such a talent. Thank you

[@shakhirrt5188]

You got a very rare talent that many people dont have..thanks a lot...

[@madheehmohamed9093]

shakhir rt

[@lobarita]

ICU nurse here: hard to keep up with, but still very helpful. Thank you guys.

[@amandanifong7903]

Came here to grasp it for nursing school... And DANG. This was fantastic! Exactly what I needed. Thank you!

[@johnmichael5135]

ur lectures go hand in hand with your picture - you explain so clearly that it is like you are spoonfeeding us the exam answers :) so glad to be subscribed.

[@gautammure]

Incredible illustration, Doctor. Bravo! The best I have ever seen. Crisp, eloquent and to the T.

[@jae89latina]

Blew my mind how simply it was explained! Loved the illistrations

[@Cypher1210]

You are a god! Pulmonary Physiology exam coming up & this explained it so much better than my professors rambling!

[@xinfam0usxplayax]

Wow. ICU presentation today covering MOA hypoxemia. This was the only thing i had trouble explaining. Thank you!!

[@uzairjavaid219]

Way of your explanation is matchless... A big applause for you

[@Medcram]

Thank you

[@artiepie]

I am a pulmonary hypertension patient and have to have a double lung transplant. This lecture really helped me understand what the docs are talking about when they say my pressures are at certain levels. Thank you

[@jasmac84]

your lectures are great I finally understand so easy to follow... I have been to several lectures on VQ mismatch over the years and could not get my head around it... I listen to your lecture and bang I finally understand it. I'm glad our Uni lecturer suggested to watch your videos..

[@Medcram]

Jason MacAskill Thanks for the feedback- glad the video helped clear things up

[@ischupak6767]

Legend. If only you were my lecturer! So clear & easy to understand! THANKS A MILLION!!!

[@Medcram]

Glad it was helpful - thanks.

[@ashmano23]

Hallelujah !!!!!!!!!!!!!!!! May God bless you million times million. I completely understood the concept, I was so lost before i watched this video. :') Thank you

[@ruannelynch9912]

After reading over the same 3 paragraphs about 4 times in my text book, i bounced up this you tube explanation and i can finally read on. Thank you very much.

[@Medcram]

Ruanne Lynch Good to hear the video made the textbook more readable- thanks for the comment

[@jennigiatroudakis4240]

Very helpful! But one suggestion: Khan's professors are great at using different colors to help organize paths ways or thought. I would have appreciated that especially in the beginning of the video.

[@emilysummer1373]

I have stage IV COPD with VQ mismatch and PH and nobody ever explained what this meant to me. Thank you!! Now I realize why I must keep 02 on always and monitor with pulse oximeter.

[@fatboy117]

Finally a well explain concise video with ways to apply this concept

[@charlotteportzen3337]

You are helping me get through nursing school. Thank you so much for these videos.

[@aldys2005]

You have a great way of teaching. Simple and precise! Thank you!

[@elizabethallen3751]

These have been great, thanks for posting. Everything is clearer now!

[@hyrum_abiff4325]

Love the analogy of ' air goes in and out and blood goes round and round' - this is what I jokingly tell people my bachelor of paramedical science taught me. However, essentially keeping a VR and HR going is one very good end goal for treating acute patients, generally speaking. I'm sure you know where I am coming from. Peace

[@myprettygirl91]

this is absolutely amazing. I've been trying to understand this concept for literally hours. i get ittttt

[@Medcram]

Thank you for watching!

[@gonzojed1]

Straight forward, concise and in layman's terms. Very well done, thank you for your time and effort.

[@padersam2012]

thank you for such a clear explanation of V/Q mismatch

[@vinnyfrancio23]

Very good explanation of quite difficult topics for the USMLE step 1. Thank you Sir.

[@kheeters]

this was incredibly helpful!! one topic of interest (may already be covered, havent looked to see yet) differentiating PA02 from Pa02 from percent saturation from Fi02, and the different pathologies impacting all of these values (CO poisoning, altitude sickness, methemglobinemia, etc)

[@laryssablunt8299]

GREAT demo! Clear and informative!

[@KBearRawrRawr]

This is a really thorough and clear concise explanation of V/Q mismatch thank you so much!

[@cocokrisp8967]

Fabulous! great visuals and clear instruction!

[@singleswomen3929]

Doc am grateful for all your materials.have learnt a lot Anaesthestist resident in Nigeria

[@cnmacias1]

You explained things wonderfully! Thank you for making this topic simpler for me.

[@skizaftis]

Fantastic explanation. You are doing great job!

[@hillcat2008]

Love this series! I may pass this exam after all!

[@Hernandez877]

Thank you so much. My professor didnt even let me know that Q was perfusion

[@captainvdog6871]

Dude! You are a rockstar at explanations!!

[@prantikachakraborty7330]

you are unique at making difficult concept easier..god bless you

[@drbirendrakishorenayak1037]

Excellent for the biggner and really very talented explanation which makes easier

[@natalielouise2865]

Absolutely awesome! Why can't clinicians just explain it like this? Thank you ever so much for making study easier

[@kasahunbentimerga3006]

You are my favorite, as usual!

[@nicollepicton3208]

Thank you! This is super helpful.

[@itsssmenil7287]

thank you! very informative!Please make a video also for respiratory failure.

[@pallavirao4127]

Beautifully explained.. Thank you

[@MijntjeV]

Wauw, this is soooo incredibly helpful! My test is tomorrow and I have higher hopes now haha! Thanks a lot!! X

[@7r1n3santiago]

great video and easy to understand! please keep posting

[@funtimecruz]

That was great. Thank you for your time in explaining.

[@maveille]

Extremely helpful and concise. Thank you very much!

[@kristinruttan5451]

great explanation! this made V/Q very easy to understand. thank you!

[@jportillo151]

Great explanation!

[@lutfinurfarid9176]

Very helpful, the explanation is very clear. Thanks!

[@lemonsqueezycrafts6818]

Thank you very much for these lectures - really helps!!

[@rburdman87]

I was just diagnosed with this today and my head was spinning. Thanks for an easy to understand tutorial.

[@paydenaronson524]

You can not be diagnosed with v/q mismatch... You can be diagnosed with pneumonia or asthma or anything else but not v/q mismatch...

[@rburdman87]

Payden Aronson Interesting...I have documentation stating VQ mismatch from a Cardiologist and a pulmonary team. Had 2 right heart cats done and one was a stress cath ... I am not contradicting you, I don't know enough about it to say who is correct.

[@rizkiadrianhakim]

Very clear explanation, thanks !

[@sanj5026]

Roger. Thank you for all the videos. Please keep them coming!! Very helpful for a respiratory therapist student that's just entering his/her clinical practice :D

[@katyaa7865]

Great video has made it all a bit clearer!

[@Shaf2010]

Thank you so much.For the first time,I can say that I understand Hypoxemia.

[@Y-4801]

Such a great video!

[@IndyaBeerens]

from the bottom of my heart..... thank you

[@JelliBaby780]

Lifesaver please continue doing this!!!!

[@Medcram]

+JelliBaby780 Thanks! More videos coming soon

[@ValentinoOoOksa]

Thank you for the great and easy demonstration that was very interesting .. You made every's clear so far .. Thanks again

[@farahzubaidy6116]

thank u so much for this great explanation

[@Andolem]

Excellent video, thanks.

[@gtwomey0423]

great explanation!

[@awesomeo46]

Super helpful, thank you so much!

[@KhaleesiofKansas]

VERY helpful and informative. Thank you!

[@Twelvesteps]

Thank you for helping me on my National Respiratory Therapist exam.

[@hotfoot214]

DR you are a genius.i know understand hypoxema better than after reading all those stuffy texts.thank you

[@m33rebus]

Loving your videos, it made applications of medicine much more easier to understand! Also, just wondering, how does hypocapnia play out in the compensating of this situation?

[@hasanabad9141]

Thank you for your video. I just have one question regarding pneumonia and pulmonary edema, i.e. In those states, is it that you have increased fluid in the alveoli resulting in impaired ventilation but normal perfusion, creating an intrapulmonary shunt? So why would supplemental oxygen improve oxygen status in this case? Thank you in advance.

[@Drexelle]

Great video! Now (just to tie it all in) I gotta go find the one where you describe and explain "Shunt". I am a Trauma/Burn ICU RN who loves to understand the rationale behind what we do. Thank you!

[@ChloeDunIT]

Awesome video!

[@rody2022]

Thank you so much for your clear explanation. I finally understand V/Q balance and imbalance, yay!

[@Medcram]

Roddy Gee Good to hear- Thanks for the comment!

[@gabrieltangco8498]

Very helpful!! Thanks so much!

[@yeoleu]

Great video!

[@chrisjauregui7308]

Great material, simple to understand.. thank you

[@Medcram]

Chris Jauregui Thank you- glad it was helpful

[@mohamedbecool]

it's wonderful explanation

[@mrfouts1]

Great video, very clear!

[@lopezholder]

NICE EXPLANATION!!

[@amyarrieta3854]

Amazing, thank you so much!!!

[@jennaisrael7091]

Very Helpful!! I would love to you go through a few more examples of pathology that lead to V/Q mismatch for example when V/Q is low like in bronchospasm or something like COPD/Asthma that affects both lungs in their entirety.

[@Medcram]

+Jenna Israel Thanks for the comment and suggestion!

[@marygraham8120]

@Tye, Aa refers to alveolar-arterial gradient and the concentration of oxygen of both areas.

[@vs442102]

superb and simplified

[@borg6971]

Thank you it was described well.

[@lrosedunn]

You are amazing! Love your videos!

[@hassanalawami9104]

thank you very much. that helps a lot

[@yahya-ar]

great explain thanks a lot

[@mulanmarie]

Wow!!! That was amazing, it is so simple.

[@aldys2005]

So helpful!

[@11zen45]

Thank you sooooo much. Bless you. I appreciated your simple & clear explanation.

[@Medcram]

+Vanessa James Thank you for the feedback

[@andreatesone1873]

Doc you are the best

[@danielalexander8643]

very good explanation.. V/Q mismatch isn't difficult again with this lecture..

[@hornet011]

One thing, V/Q mismatch doesn't necessary mean that part of lung has lower rate and other part higher than usual, it means that V/Q is different than normal for lungs. In pneumonia for example there aren't pulmonary segments with higher ratio. Only lower, and result is hypoxic blood.

[@farahalameri3870]

thanks for making every thing easy

[@dlong9562]

Made it very easy to follow and understand. Thanks

[@Medcram]

D Long thanks for the feedback- glad the video helped

[@fw2612]

soooooo helpful.

[@emmarguerite]

So helpful...Thank you!