Holy WOW, curve C was arterioles?? My mind's blown that this was so simple. I will never ever forget this again - FINALLY A CLEAR EXPLANATION!! Thank you so much for this! I wish you all the best in your future endeavors
I had been trying to understand this topic for over 30 minutes and then decide to watch a YT video and came across your vid. You explained it so clearly and made it all so simple. Thank you so much. Greeting from Pakistan.
I think this is incorrect regarding venous curve changes: As I understand, vasodilation or vasoconstriction produce a change in the SLOPE of the venous curve. Changes in BLOOD VOLUM shift the venous curve right or left.
when you said that the VR will decrease and the RA pressure increases, can you explain this? I would have thought that if venous return decreases, then LESS blood is going to the RA so with less blood, there would be less pressure. I do not understand -would you please comment on how this happens. Thanks
hi! nice explanation but catecholamine increase cardiac curve, whereas sympathetic supply increases venous tone(higher venous curve) but sympathetic supply would cause release of catecholamines, so what is the net effect of sympathetic supply/catecholamines?
You are right. Definitely it has effect on both the curves but in exam they do not ask such complicated situation so keep it simple as it is given in first aid.
Meet patel actually in first aid, where the cardiac output curve is high, the etiology is given as catecholamines, whereas when the venous pressure curve is increasing, etiology is sympathetic simulation.
One question, how does both CO and venous return increase with a decrease in total peripheral resistance? Is the venous return secondary to an increased LV output?
Very good dissection of the graphs for recognizing venous return problems, cardiac output problems but what you say is to basically memorize the shift of the lines. This is not helpful in explaining the relationship between lines and critical thinking. reasoning is part of the problem in solving questions. First off when you say positive inotrope or negative inotrope in measuring cardiac output versus end diastolic volume it means it is a measure of systolic function or getting blood out from the heart especifically the ventricles. This is measuring contractility. If you increase the amount of blood entering the ventricles you will increase the amount of blood exiting the heart (Cardiac Output) by increasing force of contraction (contractility) or speed of conductivity (heart Rate) which increases speed of contraction. This is what causes the shift up ( increase contractility), or shift down (decrease contractility) in the cardiac function curves. The reasoning of why the venous return line starts up and comes down when pressure from the right atrium is exerted is because the amount of blood exiting the heart per minute( cardiac output) is equal to the blood volume in the veins before a an atrial pressure is exerted ( blood volume in veins at resting state). This means blood volume in which mean systemic pressure is 0mmhg is called unstressed vascular volume because no atrial pressure has been exerted. The pressure needed for blood coming from the veins to open tricuspid valve in the right atrium is mean systemic pressure= ( Central venous pressure - right atrial pressure). This is why when blood is entering right atrium blood volume from the veins is decreasing as right atrium pressure is being exerterd. This is why the curve goes down. The shift in the curve to the left or to the right is as you masterfully stated.
Holy WOW, curve C was arterioles?? My mind's blown that this was so simple. I will never ever forget this again - FINALLY A CLEAR EXPLANATION!! Thank you so much for this!
I wish you all the best in your future endeavors
God bless you abundantly!!! To think I had to sweat through this!!! I totally understand now!!
Adesuwa Ighodaro thank you for your kind words....yeah this is the basic idea that you need to answer question on step 1.
Clearest video Ive ever watched on youtube! Thank you!
Janie Theriot thank you very much :)))
Thank you so much! You’re literally saving our test taking lives!
Hi Meet Patel all of your videos are pure gold, you select very difficult to understand topics and make very good sense of them
I had been trying to understand this topic for over 30 minutes and then decide to watch a YT video and came across your vid. You explained it so clearly and made it all so simple. Thank you so much. Greeting from Pakistan.
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You made this topic very simple for me …… thank you
this is the more clear and concise video online. Thank you!
Thanks man you explained really well let me tell you that you even explain this topic better than Boards and Beyond
This was the best explanation i have ever had for this particular topic. Hats off to you man...!
thank you doctor ))
Thankyou I had been struggling through this page for quite a while but couldn't understand it. You explained it pretty nicely :)
Bro....this was beautiful... thank you so much
i guess this guy explained better than most professors :) i know less detailed and to the point discussion made him do that!! thumbs up!!!
I already had good concept abt this but this video will help me crack those curves so easily. Nice shortcuts
Mohammed Furqan thank you :)
God bless you! Thank you so much for this
Very well man❤️. Best of the best👍
You discussed it better than my profs!
Thank you, greetings from the Netherlands
This was so helpful and very explanatory. Well done and thank you.
Nene Udechukwu thank you :)))
Excellent!
Zaberdast yar
Thank you thank you thank you Meet bhai....you are great!
Thank you sister :)
It was awesome🙌
Very informative
Extremely helpful...
Thank U
Excellent 👍
Thank you for sharing your knowledge. You did an amazing job.
thanks man !! short , concise& to the point !!
radwa awad :)))
Thankyou Soo much beautifully explained
awesome video! was breaking my head over this. thanks a lot!
Aadarsh Moses LOL...you are welcome :)
Beautiful 🧡
Majja aagaya
Thank you so much for this video ❤️
amazing video,God bless
GOOD PRESENTATION..... VERY HELPFUL FOR ME AND OTHER MEDICOS...THANKS
arpit porwal thank you :))
great..I am lucky here
oh u intelligent freak...fracking love u brother...
great explanations! what's ur score??
I think this is incorrect regarding venous curve changes: As I understand, vasodilation or vasoconstriction produce a change in the SLOPE of the venous curve. Changes in BLOOD VOLUM shift the venous curve right or left.
Yeah so VD will shift the curve towards rt and VC towards left rt?
when you said that the VR will decrease and the RA pressure increases, can you explain this? I would have thought that if venous return decreases, then LESS blood is going to the RA so with less blood, there would be less pressure. I do not understand -would you please comment on how this happens. Thanks
Great Video Mate!!
I understand it now!
Thank you! So helpful, better explained than my teacher xD
Uba // haha.... you are welcome :))
On point 💯👍🏻
u re awesome man , blessings
Awsome..
hi! nice explanation
but catecholamine increase cardiac curve, whereas sympathetic supply increases venous tone(higher venous curve)
but sympathetic supply would cause release of catecholamines, so what is the net effect of sympathetic supply/catecholamines?
You are right. Definitely it has effect on both the curves but in exam they do not ask such complicated situation so keep it simple as it is given in first aid.
Meet patel actually in first aid, where the cardiac output curve is high, the etiology is given as catecholamines, whereas when the venous pressure curve is increasing, etiology is sympathetic simulation.
apaar dadlani go with first aid and uworld
Meet patel ok thank you! amazing video
apaar dadlani thank you. this is an old video
good work
can you please upload more videos. for other subjects as well. maybe one for high yeild ecgs?
nice explanation thank u
Thank you
Wow thank you so much!
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i can see some dr najeeb influence in there ;)
Me too :D
how will the vascular curve move up during vasoconstriction? wont it cause resistance to increase?
That’s venoconstriction ! Peripheral Resistance is associated with arteriolar constriction
You're awsome!!! Wish u made a video on JVP graph as well
Tayebah Chaudhry thank you...i will try to make :))
Thanks man!!
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One question, how does both CO and venous return increase with a decrease in total peripheral resistance? Is the venous return secondary to an increased LV output?
samtheman264 yess exactly
This is actually median systemic pressure.
best!!!!!!
Very good dissection of the graphs for recognizing venous return problems, cardiac output problems but what you say is to basically memorize the shift of the lines. This is not helpful in explaining the relationship between lines and critical thinking. reasoning is part of the problem in solving questions. First off when you say positive inotrope or negative inotrope in measuring cardiac output versus end diastolic volume it means it is a measure of systolic function or getting blood out from the heart especifically the ventricles. This is measuring contractility. If you increase the amount of blood entering the ventricles you will increase the amount of blood exiting the heart (Cardiac Output) by increasing force of contraction (contractility) or speed of conductivity (heart Rate) which increases speed of contraction. This is what causes the shift up ( increase contractility), or shift down (decrease contractility) in the cardiac function curves. The reasoning of why the venous return line starts up and comes down when pressure from the right atrium is exerted is because the amount of blood exiting the heart per minute( cardiac output) is equal to the blood volume in the veins before a an atrial pressure is exerted ( blood volume in veins at resting state). This means blood volume in which mean systemic pressure is 0mmhg is called unstressed vascular volume because no atrial pressure has been exerted. The pressure needed for blood coming from the veins to open tricuspid valve in the right atrium is mean systemic pressure= ( Central venous pressure - right atrial pressure). This is why when blood is entering right atrium blood volume from the veins is decreasing as right atrium pressure is being exerterd. This is why the curve goes down. The shift in the curve to the left or to the right is as you masterfully stated.
thanks a lot..!!
jahnavi vengampalli you are welcome :)
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You are the man
Andres Arredondo thanks bro
good job. very helpful.
Can u make a vdo explaining murmurs please