Baby circulation right after birth | Circulatory system physiology | NCLEX-RN | Khan Academy

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Watch how the blood flows through the baby's circulation and compare it to what happens in the fetus. Rishi is a pediatric infectious disease physician and works at Khan Academy. Created by Rishi Desai.
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29 сен 2024

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Комментарии : 177

@cairennbinder2233 8 лет назад

I love this video. "So, this arteriole is excited, its never really had a chance to be dilated before..." \

@lovejoy41275 11 лет назад

I have been watching his videos since I started college in 2010. I am now 3 months away from graduating as an RN (registered nurse) and I am still using his videos. He is absolutely amazing!!!!!!. I always recommend his videos to everyone. Thank you so much for your fabulous videos, you have no idea how much they have helped me, exspecially through all my Biology's.

@jp32123 2 года назад

i have hated on many people trying to explain this, they sound bored, unpassionate, and they simply just suck. Dr. Rishi, u are the exact opposite of that... thank u so much! u rock! ♥

@irisaguilar-rivera3574 8 лет назад

omg thank you! so much better than reading it over and over.

@KellSpeekz 9 лет назад

your videos will be the reason I ace this exam confidently!!!

@praveenmadhubhashana4185 Год назад

Thank you ❤️

@dvuk3368 10 лет назад

Genius ! Finally clear. You helped me a lot. Thank you :))

@Beikabeikamura 6 лет назад

Nicely done. Thanks.

@ajonie.a6986 3 года назад

This is too good!

@misbahsalaria4655 9 лет назад

lovely! thins made damn easy

@sa159753sa 10 лет назад

thank youuuuuuuuu!!!!!!!!!!!!

@juliettye25 9 лет назад

Thanks for the great video. Totally helped me as for my Reproductive Bio course. Am currently a Medical Sciences student. Cheers!

@vinca1460 7 лет назад

its really amazing, all these changes are just so cool thank you for your videos, really enjoying it

@misswozniak 11 лет назад

amazing! thanks

@ohok5970 5 лет назад

So the pressure on the left side of the heart becomes greater than the right side of the heart therefore the septum primum closes off but why isn't the septum secundum opening up? Wouldn't the greater pressure on the left side push it open?

@danielabarreto577 2 года назад

Traduccion al español????

@Loraccc24 10 лет назад

Thank you

@Foad33 8 лет назад

every day in med university, my believe in one God increases. áll this system is impossible by nature it self. I can believe in adaptation but to some limit, There is bigger and genius power behind all this that make it happened, and I call it God. The creator of everything.

@alexaguirre3286 Год назад

Amen!

@JungleLibrary 7 месяцев назад

Just because we have biological complexity, it doesn't follow that an iron age war god that hates sin and sacrificed himself to himself to appease himself exists. That's just your preconceived notions infecting an otherwise good education.

@melaniehampton5962 7 месяцев назад

@@JungleLibrarythere's brilliant scientists throughout the world that have a strong belief in God. It's both. God created you to have a free will to decide and think for yourself also.

@minsoolee4076 6 месяцев назад

Amen!

@ayaawwad5822 10 лет назад

wow

@katierellah5366 4 года назад

I have to know, the tissue that constricts and is no longer used, (Umbilical Artery, Ductus Arteriosus) does it just 'fall off' and get excreted, does it always just stay there, like scar tissue???

@jessicasnowden2155 9 лет назад

Thank you!! 3 years in nursing school and nobody has been able to explain this as clearly as you in your video. You made fetal circulation feel easy!

@whozaskin3639 9 месяцев назад

Feel easy......a reasonable compromise would be to have a complete nervous system link between all babies undergoing it, and all those involved in doing it.

@erwinalber8273 11 лет назад

Thanks for the information! The video however skips the most important bit of information parents need, namely that at the moment of birth a third to a half of the baby's blood is in the placenta, and that the CORD MUST NOT BE CLAMPED until this blood has been transferred to the baby and the cord stops pulsating and goes flat and white. It's in fact best to not clamp the cord until the placenta has been delivered. Once the blood has been transferred the placenta goes flat and is more easily expelled than a placenta which is full of blood due to premature cord clamping which deprives the baby of its full volume of blood, leaving the baby weakened and anemic,

@ongeschikttheebladje 9 лет назад

You don't have to wait until de placenta is born. After 3 or 4 minutes enough blood has transfer to the baby and the cords stops pulsating. The placenta mostly is born after 15-20 minutes(without Oxytocin). And most parents doesn't like a placenta hanging on there new born. This type of information is not relative, for this video. It's about adaptations and changes after birth and not about pathological diseases.

@fallonnicole7736 9 лет назад

+amylie Jansen I appreciated Erwin's contribution to the conversation.

@mluna4245 9 лет назад

with the body's own production of wharton's Jelly, I really dont see the need for us to cut the cord or clamp it before this process happens on its own! more reason to delay cord clamp!

@Night93 9 лет назад

+M Luna Yeah but the wharton's jelly doesn't 'happen on its own' it only starts contracting when exposed to a lowered temperature. That's not going to happen if the cord is not clamped/cut....

@cairennbinder2233 8 лет назад

+Night93 ?? It is exposed to a lower temperature when the baby comes out...

@Night93 8 лет назад

It doesn't exactly work like that. Straight away after birth the cord pulsates (it is still attached to the placenta which is in the mother, placenta tends to be birthed later) which continues to provide essential oxygen, nutrients and delivers blood back to baby. This transfer of blood is called placental transfusion. Placental transfusion is the system that provides the baby with red blood cells, stem cells, immune cells and blood volume. Delayed cord clamping allows time for the placental transfusion, ensuring safe oxygen levels and blood volume in the baby. If the whartons jelly began contracting and clotting to the lowered temperature of air when the baby comes out this placental transfusion wouldn't happen and there would be no point of delayed cord clamping at all.

@cairennbinder2233 8 лет назад

+Night93 yes, I know all that - but above you disagreed with delayed cord clamping, or so it appears

@Night93 8 лет назад

No if you reread what I said I am all for delayed cord clamping. My initial comment was about the contraction of Wharton's Jelly..

@GiftedBirth 10 лет назад

?? because performed immediately at birth it is a surgical intervention, shown to reduce blood volume, produce bradycardia, risk ID anaemia..besides, it would be more interesting to see an accurate presentation of transition from placental to pulmonary respiration that isn't just 'clamp'.

@grndhg86d 2 года назад

I agree, why not study and focus on the authentic primarily then look at the counterfeit and any variations between the two could expose possible differences in the values???

@gsx6757 3 года назад

Insanely simple explanation, wish all lecturers were like you! thanks!!!

@metashambles6707 8 лет назад

Please please please dear god do a video on development of the heart. Preferably before my undergrad finished in 2 years. Would really appreciate a good vid on that.

@tracyzr11 10 месяцев назад

Thank you so much. You have a way of teaching about you that is interesting and engaging. I found myself so interested that I couldn't look away. Been trying to learn this for a while now and it never made since. Please continue to make videos.

@whozaskin3639 9 месяцев назад

a reasonable compromise would be to have a complete nervous system link between all babies undergoing it, and all those involved in doing it.

@bohnohboh676 9 лет назад

Great video. I have a question: when the ductus arteriosus and the umbilical arteries constrict due to high pO2 and low prostaglandin levels, what eventually happens to them? Do they remain there as a cylindrically oriented cell mass, or do they apoptose?

@vladdanila5726 9 лет назад

They become ligaments connecting different structures around them. I.E. the Ductus Arteriosus becomes the Arterial Ligament, with no function other than connecting the aortic arch with the pulmonary trunk.

@fallonnicole7736 9 лет назад

+George Mastorakos Thank you for asking this! I was really wondering as well. I'm no med student but I get what a ligament is.

@juwairiyahb.2100 Год назад

Two types of comments on this video: 1). Thank you for this video, it explains everything so clearly 2). PLEASE DON'T SAY THE WORDS CORD CLAMPING, HOW DARE YOU, A PEDIATRIC INFECTOUS DISEASE PHYSICIAN, MENTION CORD CLAMPING.

@G.ella22 15 дней назад

It's truly incredible to encounter someone who genuinely invests in the explanations they provide. Words in a comment section can hardly convey my deep appreciation for your videos 😊

@kathebrown9707 Год назад

But where is the failure in this when the PFO remains patent and does not close, and and what I’m told is about 20% of people PFO remains open and supposedly “asymptomatic “of any problems resulting from an adult with a patent foramen ovale?

@whats_a___taylor510 11 лет назад

One thing I would like to mention about the Foramen Ovale is that it may not close completely directly after birth. In fact, many infants will continue to have what will sound like a heart murmur upon auscultation, for a couple weeks after delivery until that Foramen Ovale completely fuses closed. This is normal and most doctors will be able to differentiate between a heart defect and this slow closing of the Foramen Ovale.

@kennymokuolu863 10 лет назад

Thanks for the video, great stuff, and thanks to Erwin for bringing that important point, I did not know that. You guys rock! Thanks.

@redfridgevalor685 Год назад

I always wondered how people understood how all this works, like the inner workings of the babeh's heart. Did they throw in the baby into an Xray or something? Or did they do other stuff to see how this works. Most especially about the circulation of the fetus.

@elenavaldivielso5961 3 года назад

Hi! Thanks for your videos, they are amazing! I have a question regarding fetal circulation. In this video, you explain that high oxygen levels, altogether with low levels of prostaglandins, make the smooth muscle, in the ductus arteriosus, contract. Hence, I understand that oxygen acts as a vasoconstrictor. How does hypoxic pulmonary vasoconstriction, then, works? Shouldn't low oxygen levels cause vasodilation? Thank you!

@jimsteinway695 2 года назад

I’d like to know how much of the babies blood supply is still in the placenta when the babies born and should you wait before cutting?

@whozaskin3639 9 месяцев назад

a reasonable compromise would be to have a complete nervous system link between all babies undergoing it, and all those involved in doing it.

@xueqing8050 4 года назад

How about the blood vessels in the liver? How to circulation gets back to the liver?

@baskallen9223 Год назад

😃

@studentnursesaima5836 3 года назад

I was wondering how it all closes off, this explains just that

@sweetydeh 9 лет назад

I've been so lost with this fetal circulation before and after birth! Thank God, I stumbled onto this video, and the light bulb in my little brain is ON baby!!! thanks Khan!!!

@avijitsarker9191 Год назад

God Damn it !! Why i didn't see this video earlier in my med school!

@ОлександрГальчак 10 месяцев назад

Thank you!!Greeting from Ukraine ❤️

@aabhaanekar9990 7 лет назад

Simplified and creative demonstration of all topics! Excellent videos! Very much recommended for understanding fundamental concepts! 👌👌👏👏

@veselinpetrov6586 8 лет назад

Sub-freaking-scribed, dude!!! Nice work, man :)

@posled 8 лет назад

I like his voice...music to my ear

@catn9608 4 года назад

ur video was used in my australian uni's online learning activities section :) u're doing an awesome work! thx for ur informative video, perfect for visual learners like me

@ashwembomlanita1744 4 года назад

Hi there I’m so happy I finally passed my nclex after failing for 3 times thanks to a friend who recommended me to Mr StephensNegh. You can WhatsApp him on +1 (413) 634-6055 or email him on vasconegh@gmail.com. This man is so so amazing he’s got a couple of good questions and answers for your test be it Rn or LPN. Guess you wouldn’t want to be left out

@khalidsalah9796 3 года назад

Two umbilical veins and one umbilical artery

@AG-en5y 2 года назад

i heart hillary clinton uses whartons jelly to stay young

@helendavey5050 2 года назад

the lungs can take in air with the placenta still attached - in fact it improves outcomes for infants to resuscitate with the cord intact..... the video is great if we could take out the 'clamping and cutting the cord' part. Maybe that bit could be left out of your update?

@grndhg86d 2 года назад

Would you do a video showing how premature umbilical clamping causes infantile coarctation of the aorta please? I can't seem to find a good illustration for how this happens.

@KayVgKatTV 3 года назад

Always helpful to watch this video. Thanks for showing and explaining!

@bobbyschilderwerken5345 3 года назад

the best explaination

@drvinson8947 4 года назад

Nice explanation. 👍🏼

@Animosity175 3 года назад

So i've read that as pvr decreases, pa intraluminal pressures increases (distension). What is it that makes the Pulmonary artery pressures decrease here? Thank you

@kostantinos-kosta-papathan5169 10 лет назад

Does the pressure and resistance of blood flowing through the left ventricle increase? If so, why is there an increase?

@mawiakhammash9190 6 лет назад

Super nice video. Though I wonder why does increase in oxygen levels make the pulmonary arterioles dilate while it makes ducts arteriosus and umbilical arteries constrict?

@bre1263 Год назад

Mother nature's idea? So she is a person?

@hannahmurphy6305 6 лет назад

I thought the umbilical vein was only in the umbilical cord and not the fetus. So why would there be blood there if there it's in the cord?

@kristylee8091 9 лет назад

awsome,and very clear. thank you

@90chathurika90 9 лет назад

this video is so good and really helpful. The way your presenting it is amazing. thank you so much.... :)

@mihika6730 3 года назад

Amazing content. You explained so clearly what my text should’ve explained to me in 5 readings 😅

@koky509 3 года назад

Subhanallaha

@Merryyy203 7 лет назад

This whole change is crazy and I didn't understand it when it was explained in class. Thank you!!!

@leannanunez3250 10 лет назад

I love you! This is an amazing video. Simple way to explain complex processes.

@telugufacts_trending Год назад

What about hepatic arteries?

@edoardoleo1625 9 месяцев назад

Amazing

@jordanmdash 3 года назад

man the human body is wild

@Flower-wh4oi 2 года назад

Hey thanks for sharing

@lizzmerrell 11 лет назад

Can you shed light on "fad" births that leave placenta attached for 24 hours or so? I can wrap my head around why some midwives wait until the baby is breathing and the placenta detaches as a little extra "insurance" for well-being since there may still be enough oxygen-rich blood to do some good for the baby if there is a pulmonary problem. It seems that Wharton's jelly will shut off most flow pretty quick, therefore oxygen and prostaglandin will drop. Any point or risk in the fad?

@abdurrahmanbin-nuhaid968 7 лет назад

You are awesome !!

@asmasiddiqui2215 9 лет назад

excellent explanation. thank you.

@shreyasichakraborty Год назад

So clearly explained. I bet I won't ever forget this...

@ireenbwalya-tm2jn 7 месяцев назад

Fantastic video 💃💃🥰🥰

@adenacanton6503 9 лет назад

This is an incredible video! He has a way of simplifying material and making it MAKE SENSE!

@Mel-xy7jo 9 лет назад

I love your videos! Brilliant for revision!

@sakthivelb9074 Год назад

Amazing video sir

@amberwol9330 9 лет назад

LOL.... excited arterioles :') thanks for the video!!!!!

@valeriahdz4333 3 года назад

no dijiste

@zeeshanmansuri3714 10 лет назад

The best explanation ever....

@chloewilliams7965 7 лет назад

What happens to the amniotic fluid that was previously inside baby's lungs? Do they cough it out/swallow it?

@enalyppop 7 лет назад

they cough it out

@786unknown4 2 месяца назад

Very nyc 🎉🎉

@onwaradumnil4672 Год назад

Thank you.😊

@maryrosec.balomit8595 2 года назад

ahh thank you for this! u made it easier to understand.

@DRLUCKSANAREE168 9 лет назад

AWESOME !!!! Thanks for creating these kind of things

@Kudravets-Diana 8 месяцев назад

❤

@shelbielong2251 6 лет назад

I watched both the before and after videos and I am so thankful you took time to make them! When I was reading about it in the book I was completely lost and decided to give RU-vid a try and came along your videos! The way you explained it was so comprehensible! THANK YOU THANK YOU THANK YOU!!