Thank you so much ,with all the illustrations it literally made it so easy to understand,great video 👍🏼👍🏼 Refreshed my medical school knowledge in no time 👍🏼
During that time, it's still immediately after diastole and the pressure in the aorta is still the diastolic pressure of 80 mmHg. After the valve opens and the blood in the ventricles are pushed out, that is when pressure rises upto 120 mmHg as seen in the graph. So when the aortic valve opens, its still 80 mmHg in the aorta.
Please answer this question. I think all textbooks show it wrong. SV increases as EDV increases and they all shorten to the same ES point on the ESPVR curve. Why should it shorten to the same end systolic pressure or point? If you increase SL (as in higher EDV) you should get more force (Force-length relationship) and more force means higher pressure. If they all shortened to the same ESP when you increase EDV, how would they even get the ESPVR curve?
I see you posted this a year ago so I'm late to the game. A is where the mitral valve opens because the pressure in the ventricle is lower than the pressure in the atria. The segment from A-B, where pressure continues to drop even though the ventricle is filling occurs because the ventricular muscle is continuing to relax. From B to C, you get more filling and only a modest increase in pressure (Pressure higher than point B) because even though the ventricle isn't actively relaxing, in a healthy ventricle its still highly compliant. Then ventricular contraction starts at C resulting in closure of the mitral valve and the initiation of isovolumetric contraction.
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The best video on PV Loop! Excellent!
one of the best explanations i ever had. u are a saviour!!!!!!!
wow! you managed to help me re-understand everything I thought I knew into a more organized and straight forward way! thank you!
This is honestly the best video I've seen about pv loops
Everything explained and it's also neat which helps you not to get confused
Thank you so much
CHANGED MY LIFE!!! I can understand now
Thank you so much ,with all the illustrations it literally made it so easy to understand,great video 👍🏼👍🏼
Refreshed my medical school knowledge in no time 👍🏼
I truly loved this explanation, thank you so much!
This really helped me understand and differentiate them! Thank you so much
THANK YOU SO MUCH the pathology diagrams were so helpful!!!!
Thank you so much 💓
Fantastic lecture thank you ❤
OMG I LOVE THIS
Very well explained!
Thank you ❤❤
Excellent presentation
really complete thank you
Why does the aortic valve open at 80mm hg when the pressure in it is 120 mm hg ?
During that time, it's still immediately after diastole and the pressure in the aorta is still the diastolic pressure of 80 mmHg. After the valve opens and the blood in the ventricles are pushed out, that is when pressure rises upto 120 mmHg as seen in the graph. So when the aortic valve opens, its still 80 mmHg in the aorta.
amazing explanations!!
Great video, thank you so much ❤️🤩💖
This is best description ever! Thank you! Would you be able to tell from where the pictures of abnormal loops are coming from?
Sorry I don't remember exactly where I got these pictures from, but try a google image search for "PV loops" :)
So helpful stay blessed
Please answer this question. I think all textbooks show it wrong. SV increases as EDV increases and they all shorten to the same ES point on the ESPVR curve. Why should it shorten to the same end systolic pressure or point? If you increase SL (as in higher EDV) you should get more force (Force-length relationship) and more force means higher pressure. If they all shortened to the same ESP when you increase EDV, how would they even get the ESPVR curve?
perfect it helps allot .. thank u so much ..
Exceptional presentation 🤩🙏
Well done !!
u taught it better than my school!
Thank uuuuuuuu so much 💖
great summary for my final. 👍🏼
Great great..Better than the professors!!!
What does point B indicate?
I'm not sure what its significance is. All I can say is that it's a point during the diastolic filling phase of the LV.
I see you posted this a year ago so I'm late to the game. A is where the mitral valve opens because the pressure in the ventricle is lower than the pressure in the atria. The segment from A-B, where pressure continues to drop even though the ventricle is filling occurs because the ventricular muscle is continuing to relax. From B to C, you get more filling and only a modest increase in pressure (Pressure higher than point B) because even though the ventricle isn't actively relaxing, in a healthy ventricle its still highly compliant. Then ventricular contraction starts at C resulting in closure of the mitral valve and the initiation of isovolumetric contraction.
TY!!!!!!!!!!!!!!!!!!!!!! great video
👏
This really helped me understand and differentiate them! Thank you so muchhhhh
This video is the best plus you sound like Katrina Kaif