A visual trick: The 'C' in increased Contractility reminds you the P/V loop shifts left. The 'A' in increased Afterload reminds you the P/V loop narrows and points up (pressure increases). The 'P' in increased Preload reminds you the P/V loop shifts right.
I can honestly say these videos are the highlight of my Step 1 studying!! Since isovolumetrics require all valves to be closed --> mitral/aortic regurgitation completely lose isovolumetric shape (also increased EDV b/c extra blood, incr SV) - regurgitation is a BLOB of blood so shape is a BLOB Aortic stenosis --> increased aortic pressure --> increased afterload shape Mitral stenosis --> impacts diastolic filling --> decreased EDV bc impaired filling, decr SV, decr ESV (mitraL - L shift)
Since this man has done a lot for us, let us support him in any way we can so he can continue to educate generations. Valuable lessons and a teacher to millions.
Been watching almost all of your videos and love each one to the core. But man, THIS VIDEO IN PARTICULAR IS ONE OF THE GREATEST!!! you made it genuinely easy and simple to understand! Thank you very much!!!
I admire your way of explaining things in an easy, straightforward method along with the simple; yet, effective graphes. I cannot thank you enough, sir! Great video, keep it up! and good luck to everyone!
Thank you so much for this video. You made a horrendously confusing & difficult topic so much easier to understand!! You’re godsend. Once I pass my steps, I will give you all the credit each time anyone congratulates me. I’d be so lost without your channel
I literally had stopped reading heart physiology 2 months back when I read PV Loops lol (thanks to the graphs) and started reading another subject for step 1 and decided that I’ll tackle that topic later on. Little did I know that you’ll make such a fantastic video on this topic. Today, I’m delighted to announce that I shall resume reading cardiology, all thanks to this video. 😁 Thank you for all the additional free points I’ll score on the exam with your help.
I am so happy I could cry! I have spent so much time during lecture portion of med school and Step studying trying to figure these out in a way that I could understand. I was one more attempt away from sacrificing this topic to the Step gods and wing it on the exam. Not anymore!!! Love all the Dirty Videos!
Thank you ! Thank you !! I am a respiratory therapist and try to use all tools and options available to me. The lungs are the most valuable and under educated I believe!! Thank you for making this one !!
Been procrastinating to study cardio because of this topic. And lost all interest to continue. Now this one video has helped me so much that I can't OMG ❤ thank you so much
Great.... now can you explain it to me like I'm a first grader? Just kidding, this video was absolutely awesome and simply explained a process that is so overcomplicatied for no reason. Thank you!
Easy way to remember these for blackout moments: A comes before M (going downwards the Aortics are up and Mitras are down). Also C comes before O for the ones on the left.
@18:20, could someone help me understand where I made my logical error? I was thinking an increase in contractility would show as an increase in pressure (in addition (ie the red line would travel at a higher curve than what's expected in normal?)
Can also use the change in HR to note the change in peripheral resistance, ie: norepineprine has a DROP in HR, therefore, PR increases. This trend works for the other two also! :)
Hello! Video is superb, but one thing I want to know, that the end systolic volume will decrease, as we increase the afterload as graph will shift towards right. Please clarify
hi, long time fan, one time patreon here)) why only stroke volume change ie NO change EDV or EF w/ increase preload? in contractility explaination u said ESV go down and sooo EF go up.. but on preload graph it show only SV change(increase) ?? EDV point was shift right to higher volume,, and should be also change EF?? cheers dude! :))
End systole pojnt should be at orange point bcz at the point systole ends and diastole starts....as end diastole point is at the blue point becz there diastole ends and systole starts...plz explain
Isovolumetric* .... LOL I really cannot spell.
Also to be perfectly clear, EF = [(SV/EDV)*100]
A visual trick:
The 'C' in increased Contractility reminds you the P/V loop shifts left.
The 'A' in increased Afterload reminds you the P/V loop narrows and points up (pressure increases).
The 'P' in increased Preload reminds you the P/V loop shifts right.
omg thats genius!!
love this
wow
whaaat!! amazing !!
but how does p mean go right or c mean to go left?? am i missing something?
Honestly don’t know what i’d do without your channel. Thankyou for everything you do!
I can honestly say these videos are the highlight of my Step 1 studying!!
Since isovolumetrics require all valves to be closed --> mitral/aortic regurgitation completely lose isovolumetric shape (also increased EDV b/c extra blood, incr SV) - regurgitation is a BLOB of blood so shape is a BLOB
Aortic stenosis --> increased aortic pressure --> increased afterload shape
Mitral stenosis --> impacts diastolic filling --> decreased EDV bc impaired filling, decr SV, decr ESV (mitraL - L shift)
Thank you so much ❤
Since this man has done a lot for us, let us support him in any way we can so he can continue to educate generations. Valuable lessons and a teacher to millions.
Been watching almost all of your videos and love each one to the core. But man, THIS VIDEO IN PARTICULAR IS ONE OF THE GREATEST!!! you made it genuinely easy and simple to understand! Thank you very much!!!
I admire your way of explaining things in an easy, straightforward method along with the simple; yet, effective graphes. I cannot thank you enough, sir! Great video, keep it up! and good luck to everyone!
Thank you so much for this video. You made a horrendously confusing & difficult topic so much easier to understand!! You’re godsend. Once I pass my steps, I will give you all the credit each time anyone congratulates me. I’d be so lost without your channel
I literally had stopped reading heart physiology 2 months back when I read PV Loops lol (thanks to the graphs) and started reading another subject for step 1 and decided that I’ll tackle that topic later on. Little did I know that you’ll make such a fantastic video on this topic. Today, I’m delighted to announce that I shall resume reading cardiology, all thanks to this video. 😁
Thank you for all the additional free points I’ll score on the exam with your help.
Same happen to me literally,when i get something so hard i just stop that and wait for his videos😄
I am so happy I could cry! I have spent so much time during lecture portion of med school and Step studying trying to figure these out in a way that I could understand. I was one more attempt away from sacrificing this topic to the Step gods and wing it on the exam. Not anymore!!! Love all the Dirty Videos!
whhhaaaaatttt??? 🤤🤤🤤 needed this for step 1, now on step 2. 🙏🏻 never too late to learn/re-learn! thank you!! :)
Thanks for taking care of all the 'dirty' topics of medicine and making them easier. Thank You ^^
Thank you ! Thank you !! I am a respiratory therapist and try to use all tools and options available to me. The lungs are the most valuable and under educated I believe!! Thank you for making this one !!
I got your pressure volume loop right here. Amazing vid as always, so much better than garbage first aid
Been procrastinating to study cardio because of this topic. And lost all interest to continue. Now this one video has helped me so much that I can't OMG ❤ thank you so much
Literally checked your videos for this topic yesterday! Thank you so much!
I was searching for the previous video about this topic and ended by viewing this one. Ty for your work!
Great.... now can you explain it to me like I'm a first grader? Just kidding, this video was absolutely awesome and simply explained a process that is so overcomplicatied for no reason. Thank you!
Easy way to remember these for blackout moments: A comes before M (going downwards the Aortics are up and Mitras are down). Also C comes before O for the ones on the left.
😊thnx
Admirable dedication to medical education for rising physicians. Excellent video
Dude my step 1 is on nov 26 !!! u really saved my ass lol Keep up the good work!! Teaching is a god given talent!!
Dirty you saving my medical school career!!!!! Can’t thank you enough🎉
Idk why I am crying. This made it so easy. THANKYOU😭😭😭
U r amazing @dirtymedicine
So much respect for u 👍
Love the way you explained. I will use your reference of teaching in my videos too. Really appreciated. Than you very much.
I`ve been waiting for this video for so long!!! Thank you thank you thank you
SV= EDV-ESV
EF=SV/EDK
CO=SV x HR
MAP= Dbp + (PP/3) (ez version )
PP= Sbp-Dbp
This was really amazing. Thank you
you are master mind, thank you! no one could make me understand this but YOU!!!!
Hoping to inspire and education the next generation of physicians just as you are!
So happy there is a new video and it's going to be on my upcoming exam!
amazing video! I would love a Question video on it including several drugs actions on it. thank you
thank you so much , this was highly needed , ur phenomenal
@18:20, could someone help me understand where I made my logical error? I was thinking an increase in contractility would show as an increase in pressure (in addition (ie the red line would travel at a higher curve than what's expected in normal?)
You are such a blessing ❤ thank you so much ❤
Can also use the change in HR to note the change in peripheral resistance, ie: norepineprine has a DROP in HR, therefore, PR increases. This trend works for the other two also! :)
If you already know the basics , just want to learn the pathological changes - skip to 16:13
Thank me later 🙃
If it's dirty medicine's page then... *ahem ahem* "We don't do that here"
Incredible explanation!
amazing teacher, thanks so much!!
how to measure Volume and Pressure of LV? .... Volume might be measured by Echo-cardio. how about pressure? pressure probe inserted in LV?
THANKS A TON. GOD BLESS YOU
an arrow head in counter-clockwise direction will make the graph much easier to interpret.
In thermodynamics, it is called a PV cycle. Taught poorly in med school, but covered in freshman physics.
Plz Carry on with such important concepts for step 1
Thank you 🙏
Thanks for the video dear! ❤️
I've been waiting for this since so long. Finally it's here. Thank you!
Best explanation
I really wish i could meet you one day. You're awestruck, amazing, awesome. Words cant describe my regards for you.
You're awesome, thank you!
My question is " can we know the blood pressure ( both SBP and DBP ) just by looking at this pressure-vol loop?
Hello! Video is superb, but one thing I want to know, that the end systolic volume will decrease, as we increase the afterload as graph will shift towards right. Please clarify
hi, long time fan, one time patreon here)) why only stroke volume change ie NO change EDV or EF w/ increase preload? in contractility explaination u said ESV go down and sooo EF go up.. but on preload graph it show only SV change(increase) ?? EDV point was shift right to higher volume,, and should be also change EF?? cheers dude! :))
God will bless you. Am so happy here
Amazing video
return of the king
End systole pojnt should be at orange point bcz at the point systole ends and diastole starts....as end diastole point is at the blue point becz there diastole ends and systole starts...plz explain
this is so good thank you!!!!
Thank you so much❣
MAAM COCO
From blue to red..
Mitral close1, Aortic open, Aortic close2, Mitral open 3,4
Dirty, would you recommend the AMBOSS q bank?
thank you!
you're the best ❤❤❤❤❤❤❤❤
Excellent
Thank you so much
Thank you doctor
Lots of love from Pakistan 🇵🇰🇵🇰🇵🇰
Omg thank you 🎉
Thank you Dirty Medicine ❤
thank u so much
You’re the best!
maestro.. that is all
Please do a JVP video next :)
thank you very very very very much
Great
Respectfully, I fking love you
Why's he calling the bottom circles pink & purple they look red & blue ??
Becouse he isn't talking about the circles ... just see the colours on x axis (end sistole and end diastole volumes)
Amazing
Oh thank you soooooo much
NOW I AM IN LOVE WITH YOU CAUSE YOU TAUGHT ME THIS TOUGH SUBJECT
Thanks
I love you man
You're a GOD!
My hero
Hey dirty medicine please simplify cardiac drugs portion also.... please
poetry
I love you ❤️
❤️❤️❤️
😍😍😍
First comment ❤️
mehnn this guy
ARRRNGE
U r amazing @dirtymedicine
So much respect for u 👍
Thank you!
Thank you!
Thank you so much