What is afterload? | Circulatory system physiology | NCLEX-RN | Khan Academy

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Rishi is a pediatric infectious disease physician and works at Khan Academy. Created by Rishi Desai.
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13 ноя 2012

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Комментарии : 30

@ElectronPrinciple 11 лет назад

Thank you so much!!! Amazing videos!

@Dig-Toxic 8 лет назад

you really solved a big conflict. thank you very much.

@michellemalicki2226 7 лет назад

I love your videos!! Extremely helpful and have helped me get through nursing school!! Thanks!!!!!!!!!!!!!

@manushoganyan6302 8 лет назад

Thank you soooooo much!!!

@vaishnaviramakrishna265 5 лет назад

That was very helpful!!

@rusty1850 11 лет назад

i always wondered what systolic & diastolic as related to me from the reading of the blood pressure device. thank you Khan Academy

@AddyB21 10 лет назад

Very nicely explained. Thank you for all your hard work and simplicity,

@mujjuman 7 лет назад

you have neat handwriting. also, if u decrease arteriolar resistance, you will decrease afterload

@amanieam714 3 года назад

Thanks a lot

@mahmoudmohammed9501 3 года назад

Thank you so much for the help but there is a slight technicality with the explanation . When we change afterload , preload is constant thus we can examine relationship between afterload and contractility but here you changed the preload which is invalid . Increasing afterload (aortic or pulmonary pressue ) leads to a decrease in contraction by less shortening and velocity thus less stroke volume and less cardiac output .

@dr.noir27 5 лет назад

the combined load of EDV &arterial resistance during ventricular contraction = afterload

@khizarhayat2937 6 лет назад

Increase in afterload pathologically will start as a diastolic dysfunction or systolic dysfunction?.

@henrydabomb 11 лет назад

When u draw the biggest loop(blue) you increase the afterload but dont you also increase the preload/EDV? Because the figure in my textbook has the same right border when afterload increases causing a taller and narrower loop thus decreasing stroke volume. But in your drawing it increases in width(preload) aswell as in hight(afterload). Can you please explain this to me?

@aliceroxcullen98 7 лет назад

I just wanted a simple definition of afterload, using the equations over complicates things and at the level at which i'm currently at, it's not useful in helping me understand the concept of afterload.

@GoToHellHermen 7 лет назад

You cant understand the concept without the equations

@Seems_R 3 года назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-HeUjO5DC2rA.html&ab_channel=NURSINGcom This might help

@roghani9055 2 года назад

👍👍👍

@WorldConkerer2012 8 лет назад

Sal is going to be the most educated man on the earth by the time he's done.

@brendarojas5613 4 года назад

This is not Sal

@kaleighhernandez5135 6 лет назад

You keep saying left ventricle in this video and the preload video, but both the right and left ventricle have to do with preload and after load right? Not just the left??

@devalpatel8816 3 года назад

Yes, but it is so named because the Left is a relatively high-pressure system, making the left heart failure more common, and hence more a center of focus. He did the same in the heart sounds videos.

@emmatube4583 5 лет назад

thank you for this ,, but I have question does afterload increase or decrease the contractility of the heart?plz answer me

@47monamibakuli92 4 года назад

Decrese

@devalpatel8816 3 года назад

@@47monamibakuli92 How?

@47monamibakuli92 3 года назад

@@devalpatel8816 Afterload is the amount of blood against which heart has to pump blood so it decreases contractility

@devalpatel8816 3 года назад

@@47monamibakuli92 Anrep effect, just discovered that because of your comment. Many many thanks!😊

@47monamibakuli92 3 года назад

@@devalpatel8816 Whay is anrep effect? please enlighten me

@giacomovasarri8001 4 года назад

No! This isn't right man. The AfterLoad has to be indipendent from the PreLoad. The afterload is not explained by Laplace. The afterload is explained by Poiseuille!