Preload and Afterload Animation (What do they mean? How to measure)

Thank you so much!! You made it so simple ❤

No one explained this when I was in med school. We had to figure it out on our own, AND, trust me, we had the embarrasment of having to ask our colleagues this concept of fluid mechanics. Thank you

So well done !

Thank you SO much! I finally understand it! I was running away from it but I knew that I needed to buckle down and figure it out so I can fully understand the cardiac diseases I have been learning about in school. Thank you again!

well explained thx

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Sloppy presentation

Preload is talking how muxh volume is in the ventricle in diastolic. ( when atrium is contracting) EDV
Afterload is a pressure , the aortic valve needs to open at certain pressure. The blood is gonna exert a pressure require to open the aortic valve.!! SvR and PVR


Thanks so muxh!!!!!

Good info!

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Preload is volume, how much is in the ventricle at the end of diastolic. So how many cc is in it. Afterload is a pressure! The aortic valve needs to open and you need a pressure for that, the heart has to squeeze it out against a pressure. Systemic vascular resistance is pushing back the aortic valve, so the heart has to squeeze against a pressure, to open the aortic valve.

thank you

That was the best I
have ever listened to. Thank you.

WOW thank you so much, this video was so helpful.

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Thank you so much! Awesome video.

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Thank you! So simple and made easy to understand.

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thank you !!

Saw 4 videos before this, this explained very well. Thanks a lot. May god bless you !!!

Today, I finally understood what these acronyms mean. Wow! Excellent presentation

Thanks for helping me to finally understand preload and afterload!

Oh my gosh... THANK YOU! I have read books, lecture notes, watched other videos... and could not grasp afterload! Now I get it!

120 ml with each beat

You rock!

This was PERFECT! Thank you so much!

Amazing explanation thank you so much!!!

I should've come here first. Thanks!

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THANK YOU!

everyone else had so much unnecessary details. you went straight to the point. LOVED IT!!!!!!

Amazing video!! You made it so simple 🤗

that was super clear!

now i understand, clearly explained...thanks

This helped heaps, thank you :)))

This video helpt me so much!! Thank you very much. I kept struggeling with these words. After the way you explained it, it makes sence!

Very easy to understand for old preop RN for perianesthesia certifications exam!
Thanks John!

Hello, Excellent, thank you very much.

Well thank you!!!

this made so much more sense than anything i had been watching thank you!!!

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Very helpful
Thanks a lot ♥️♥️

Preload and Afterload make so much more sense after watching this video!! Thank you so much!

This helps alot. Even as an EMT, I had five preload and afterload centered questions on my NREMT. They were difficult and centered around visable signs and symptoms and whether increased preload, decreased preload, increased afterload, or decreased afterload were responsible for the condition in question. Was able to work my way through them. Passed NREMT in mininum 70 questions, but our book from training didn't explain this subject as well as you did. I will suggest this for people I know going through EMT classes currently. Thanks!