Baby circulation right after birth | Circulatory system physiology | NCLEX-RN | Khan Academy
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- Опубліковано 21 вер 2024
- 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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I love this video. "So, this arteriole is excited, its never really had a chance to be dilated before..."
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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!
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.
your videos will be the reason I ace this exam confidently!!!
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.
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,
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.
+amylie Jansen I appreciated Erwin's contribution to the conversation.
Insanely simple explanation, wish all lecturers were like you! thanks!!!
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.
a reasonable compromise would be to have a complete nervous system link between all babies undergoing it, and all those involved in doing it.
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! ♥
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.
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?
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.
+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.
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!!!
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 UA-cam a try and came along your videos! The way you explained it was so comprehensible! THANK YOU THANK YOU THANK YOU!!
I like his voice...music to my ear
Simplified and creative demonstration of all topics! Excellent videos! Very much recommended for understanding fundamental concepts! 👌👌👏👏
Thanks for the video, great stuff, and thanks to Erwin for bringing that important point, I did not know that. You guys rock! Thanks.
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.
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!
+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....
+Night93 ?? It is exposed to a lower temperature when the baby comes out...
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.
+Night93 yes, I know all that - but above you disagreed with delayed cord clamping, or so it appears
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..
So clearly explained. I bet I won't ever forget this...
the best explaination
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.
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.
This whole change is crazy and I didn't understand it when it was explained in class.
Thank you!!!
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.
This is an incredible video! He has a way of simplifying material and making it MAKE SENSE!
I was wondering how it all closes off, this explains just that
a reasonable compromise would be to have a complete nervous system link between all babies undergoing it, and all those involved in doing it.
How about the blood vessels in the liver? How to circulation gets back to the liver?
This video was fantastic! I've read the chapter 3 times and it finally clicked when you explained it in this video! Thank you!
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?
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?
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 😊
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
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
?? 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'.
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???
Always helpful to watch this video. Thanks for showing and explaining!
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!
Fantastic explanation of these astounding physiological events!
awsome,and very clear. thank you
Thank you!!Greeting from Ukraine ❤️
Nice explanation. 👍🏼
Genius ! Finally clear. You helped me a lot.
Thank you :))
omg thank you! so much better than reading it over and over.
The best explanation ever....
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.
Amen!
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.
@@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.
Amen!
God Damn it !! Why i didn't see this video earlier in my med school!
Amazing video sir
Thank you.😊
excellent explanation. thank you.
ahh thank you for this! u made it easier to understand.
Hey thanks for sharing
I love your videos! Brilliant for revision!
ME ENCANTAN TODOS LO VÍDEOS QUE HACEN ! ME MOTIVAN Y ME AYUDAN MUCHO, MUCHAS GRACIAS!
Mariana RD Rivera a mi también!
I'VE GOT THIS NOW! This info will be no problem on my exam. Many thanks.
Thank you ❤️
Thanks for the great video. Totally helped me as for my Reproductive Bio course. Am currently a Medical Sciences student. Cheers!
Beautifully and wonderfully made!!!
You got the best lecture. Thx so much. That's gonna help with my exam
i heart hillary clinton uses whartons jelly to stay young
GOD BLESS YOU SIR ! THANK YOU SOOO MUCH
You are awesome !!
Very helpful, thank you!
I love you! This is an amazing video. Simple way to explain complex processes.
thank you. thank you so much. thank you.
AWESOME !!!! Thanks for creating these kind of things
thank you for explaining this.
Amazing
Brilliant and so helpful for revision time!
Subhanallaha
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?
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?
Really very nice video it made the topic easy
Very nyc 🎉🎉
I wish my teacher is teaching like you, i would get an A in all my classes.
What about hepatic arteries?
Another awesome instructional video!! Keep'em comin'!
Amazing content. You explained so clearly what my text should’ve explained to me in 5 readings 😅
Amazing job , very well simply explained and schematized, really thank you a lot ! keep on what you re doing, Much respect !
Does the pressure and resistance of blood flowing through the left ventricle increase? If so, why is there an increase?
great videos, thank you!
Subhana allah
Awesome! Thanks a lot!
Thank u rishi desai mam
lovely! thins made damn easy
This is too good!
The reason why the pressure drops in the lungs was what I never understood before watching this video. It’s all clear now, thank you.
😃
This is so amazingly helpful. THANK YOU!
Amazing. Very helpfuĺl
omg this is wonderful! thank you soooo much
Good explanation!
wonder wonder no no no one can reach your work hard
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???
Wow
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
Two umbilical veins and one umbilical artery
Great video! Thanks!
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?
waoh...nice video thank you...
Awasome!!!!!!!!!! Thank u sir
best explaination
Great explanation
That was sooo cool! Wow!