Fetal Circulation | Embryology | Dr Najeeb

#drnajeeb #medicines #pharmacology #drnajeeblectures #embryology
Fetal Circulation | Embryology | Dr Najeeb
Like this video?
Sign up now on our website at www.DrNajeebLectures.com to access 800+ Exclusive videos on Basic Medical Sciences & Clinical Medicine. These are premium videos (NOT FROM KZbin). All these videos come with English subtitles & download options. Sign up now! Get Lifetime Access for a one-time payment of $99 ONLY!
Sign up now on our website at members.drnajeeblectures.com/
---------------------------------------------------------------------------------------------------------------------------
Why sign up for premium membership? Here's why!
Membership Features for premium website members.
1. More than 800+ Medical Lectures.
2. Basic Medical Sciences & Clinical Medicine.
3. Mobile-friendly interface with android and iOS apps.
4. English subtitles and new videos every week.
5. Download option for offline video playback.
6. Fanatic customer support and that's 24/7.
7. Fast video playback option to learn faster.
8. Trusted by over 2M+ students in 190 countries.
---------------------------------------------------------------------------------------------------------------------------
▬▬▬▬▬▬▬▬▬▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬
(0:00-1:45)
1-Normal Fetal Circulation, 2-Changes in Fetal Circulation postnatally, 3- Post-Natal Components/Remnants.
(1:49-8:03)
1-Normal Fetal Circulation: Umbilical veins carrying oxygenated blood to the fetus; into liver sinusoids and through the Ductus Venosus into Inferior Vena Cava (IVC); and then to the Left heart and rest of fetal circulation.
(9:22-12:48)
A mixture of oxygenated and deoxygenated blood in 1st mixing-Liver, through Hepatic Venous System into IVC, mixing with less oxygenated blood already present in IVC (2nd mixing), drainage into Right Atrium. Foramen Ovalle; shunting into Left Atrium, deoxygenated blood from Superior Vena Cava (SVC); mixing with oxygenated blood in Right Ventricle (3rd mixing).
(12:49-14:25)
The rationale for shunting of most of the oxygenated blood from Right to Left circulation while bypassing the lungs = non-developed lungs in fetus. 4th mixing in Left Ventricle.
(14:30-17:08)
Rt. Ventricle to Pulmonary artery. Aorta; Left Pulmonary Artery = Ductus Arteriosus; Rationale for the connection between the Pulmonary Arterial System and Aortic System; Non-functional lungs of the fetus.
(17:12-21:41)
The early part of Aorta (having oxygenated blood) to; Coronary, Cerebral Circulation. Deoxygenated blood is received by Aorta from pulmonary artery from Ductus Arteriosus (DA) from Superior Vena Cava (SVC) [5th mixing of blood].
(21:45-23:02)
Recap of blood circulation routes starting from Placenta through Umbilical Veins; Ductus Venosus in Liver; IVC to Rt. Atrium; Forman Ovalle; Lt Atrium, Lt Ventricle to Aorta. SVC to Rt Atrium to Pulmonary Arterial System; DA to Aorta; From Aorta final channel to Umbilical Arteries back into Placenta.
(23:05-29:20)
2-Changes in Fetal Circulation postnatally = Disconnection from placenta, expansion of lungs after birth; decreased resistance to blood flow in pulmonary circulation, start of oxygenation of blood in lungs, reversal of Ductus Arteriosus.
(29:22-35:45)
Blockage and then Reversal of Ductus Arteriosus (DA) shunt in detail & closure of Foramen Ovalle (FO): Mechanisms involved; O2, Bradykinin & Prostaglandin E2 (PGE2).
(35:50-38:58)
Overall review of changes converting pre-natal circulatory pattern into post-natal pattern (adult pattern): 1,2-Contraction of Umbilical Veins after closure of Umbilical Arteries. 3-Ductus Venosus closure. 4-Pressure in Lt. Atrium Pressure in Rt. Atrium leading to Foramen Ovalle closure and its remnant Fossa Ovalis formation. 5-DA closure & reversal.
(40:00-43:35)
3-Remnants of Fetal Circulatory components: Ligamentum Teres (Umbilical Vein), Ligamentum Venosus (Ductus Venosus), Fossa Ovalis (Foramen Ovalle), Ligamentum Arteriosum (Ductus Arteriosus), Medial Umbilical Ligament, Internal Iliac Artery & Superior Vesical Artery (Umbilical Arteries).
(43:38-46:23)
Clinical co-relate: Patent Ductus Arteriosus (PDA); Blood reversal from Aorta into Pulmonary System; Machine-like-murmur. Importance of drug Indomethacin in treating PDA.
---------------------------------------------------------------------------------------------------------------------------
Join this channel to get access to perks:
Sign up now on our website at members.drnajeeblectures.com/...
/ @doctornajeeb
Follow us on Facebook :- / drnajeeb
Follow us on Instagram :- / drnajeeblectures

[@dr.asitkantanayak578]

"Loved it"is a underrated statement for this man🥰😍

[@Raymondium]

SERIOUSLY ........WHO HAD THE GUTS OF DISLIKING THIS LECTURE?? I JST CAN'T BELIEVE......... THANKS DOC!

[@irmiqbal.3852]

Exactly

[@mohammedalhassan8763]

Those people are not okay.

[@starmaddy3017]

May be they are non Medical students

[@917hshzuan2]

@@mohammedalhassan8763 its ok to be not ok

[@lonelyking2001]

@@917hshzuan2 😂 My strange hero

[@SuperRajudada]

Dr najeeb has proven that the teacher can be a rock star He's lecture like concert you just want to applaud him He is an artiste 👌👏👏👏🙌✌️

[@babitachauhantanwar8833]

satyamev Jayate He is an artist. One of his great follower siddharth chauhan, a mbbs student started a new channel following his footsteps #easymedchem

[@DoctorNajeeb]

Thank you for such beautiful words

[@amnabebe4462]

Exactly same words from my side👏👏👏

[@chantnouveauettemoignage9787]

@@DoctorNajeeb but the oxygenated blood in aorta goes where?

[@SY-od2nq]

@@chantnouveauettemoignage9787 to umbilical arteries

[@payelsarkar8647]

This is definitely one of your best lectures sir... Keep inspiring... I will never need a book to revise this topic again. It's imprinted in my brain now. Respect. I wish we were taught this simply in our UG times. Anyway, better late than never.

[@Muhammad-bv4uu]

Always revise good Sir.

[@ImranHussain-og1tr]

you r the real master of medical students ,stay blessed .. thanks

[@sadiyehatalko4290]

I just can say that your students are so lucky to have you sir. This kind of explanation is all we need as medical students. Thanks a lot.

[@aamirlone2540]

I m an obstetrician and gynaecologist. Had always strugelled to leaarn this, you made it so easy. Thank u so much sir

[@177MUSLIM]

Same here as a 3rd yr obgyn resident....

[@angrybird7711]

Same here, giving finals son

[@chantnouveauettemoignage9787]

I'm a midwife and I understand it

[@loco2153]

Amazing lecture, I love how he encourages you repeat what he is teaching. Repetition is key. I totally get this now:)! Thank you!!

[@daniesipad]

Thank you Sir for this excellent video... honestly at first so confused but your explanations made me overcome it... students who are in ur classroom are so blessed and gifted

[@towardsbetterworld4379]

Someone who has made Medical very interesting....kudos sir...u will be always remembered by every new generation doctors..

[@sahilkorgaokar3519]

Hands down Dr Najeeb is the best Teacher ever...watched almost all lectures of 1st year Mbbs..cleared all my concepts 👌🏻💥

[@DoctorNajeeb]

It's my pleasure to teach such nice students. Stay blessed ❤️

[@krishnaraoji110]

I have never understand these concepts so clearly before i have seen your lectures. I don't like to read book without watching your videos. You are THE BEST TEACHER !!!!

[@177MUSLIM]

Dr Najeeb thank you a million times ..from MBBS days to 3rd year PG .. u keep rocking n clearing concepts....

[@thinklikeanursewithNAZ]

Love u Sr u made my life I was too much confused in class while attending this lecture but when I jst open n listen ur lecture all of my confusion run away I'm soo pleased to have a KZbin teacher like u Thnk u very much Allah aap ko iska ajar dedy Xindagaii mn hamesha khush rahy

[@abc-tj3zm]

This is what a teacher should be...i would rather say that Dr. Najeeb is the best teacher in this world... Thanks sir for making things so simple and easy.

[@DoctorNajeeb]

Thanks a lot! :)

[@chvostekadrian4668]

i am a nursing graduate and currently reviewing for the upcoming local board exams.. thanks for posting this video! the concept is clear and easy to comprehend.. God bless you :D

[@bridgetnovotna2815]

What a fantastic lecture! Love the constant reinforcement! you truly know how to teach! well done!

[@dr.shwethayadav6503]

hats off to you sir.. ! Amazing clarity of concepts and excellent teaching👏👏👏👏

[@ashutoshverma7129]

Always helped your lectures since MBBS to still in PG..thanks a lot sir, it's nostalgic watching your videos,You are a true legend in medical education sir🙏

[@samudrapal1567]

i am spellbound after listening to his lectures! +Dr najeeb, TYSM!

[@isolinemcdonald6539]

I can’t believe that anyone would dislike this lecture ! I learned so much from this ! Clear and way to follow and learn Completely, absolutely Excellent lecture Dr. 👍🏽👍🏽👏🏽👏🏽😳

[@DoctorNajeeb]

Thanks for liking my hard work. Stay blessed ❤️

[@adityamishra7813]

@@DoctorNajeeb sir more video required in KZbin....... Pls uplode it

[@zarafshanmaryam6074]

You are a ray of hope to me in Medical sciences. Lot of love of and respect for you sir. 💕

[@zeenatumeed8983]

Thank you dr najeeb for clearing the concept of fetal circulation ....best lecture

[@savitamohite8917]

that was a wonderful presentation sir,you are a wonderful teacher to the core.thank you for sharing and enlightening us on the subject.hats off to you.

[@johnifeanyinwele3097]

Dr Najeeb is a quintessential medical mogul. Making medicine easy and friendly. Indeed I desire to be taught by you in person sir!

[@vsg5549]

Best Physiology Lecturer!!!!!!!!!! Well 5 years have passed and i finally got a heart from this channel and nearly at the end of my internship!!!!!

[@bharkgavisaravanaguggan8130]

You're among the BEST BEST lecturers that I have overcome ! I hate embryology totally, but through this video, i have cleared my doubts on this area. Thank you so so much Dr. !=)) You are gifted with an awesome teaching skills !

[@hootanvakili9009]

Amazing videos, many first year med students here at St George's University medical school are enjoying your videos. Thanks for making these hard concepts easy and exciting. God bless you sir

[@TheLeona1987]

woot woot!!!! SGU student here..

[@vickyvas]

thank you for making this so clear! i am in nursing school and my instructors made it more confusing than it actually was! this has helped me tremendously and i am sure i will pass my test with flying colors on monday! Thank you Dr. Najeeb!

[@samreensaim8794]

Incredible... best lecturer ever... first time in my life I understand fetal circulation ... thank you sir

[@jodieforbus4536]

NP student here. Thank you for taking the time to explain this in such detail. I appreciate you.

[@harsha29100]

if i have this kind of lectures i can be a conceptual doctor. thank u very much sir. i had heard of u. but after watching this cant say anyother thing except that u are a gr8 doctor as well as teacher!!

[@YPKProductions]

You are amazing, I study medicine in England, you are by far the best lecturer I've ever had! Thank you!

[@ashrafgreat]

Sir in this scenario of covid pandemic no physical class are going on so classes are going online So i came to your channel and the way you explain the concepts its much more more better then being in physicla Your lectures are helping a lot sir May allah paak grant you good heath nd keep up showering the blessings of knowledge to us .

[@jalpanpatel4603]

this guy explains it soooo clearly! thank you sir..hats off to you!

[@srabantikarmakar8821]

Nice

[@dikshabambole8570]

This was at peak .... Best ever lecutere

[@user-gd2eo3pg9t]

Thank you very much Doctor, You are the only doctor who was able to communicate the idea in the correct way, I wish you good luck and health. Greetings to you from Iraq.

[@singhneha1023]

Really feels blessed!!! After having every lecture..😍

[@vishaleseswari8052]

Excellent lecture!Thank you Dr Najeeb!

[@francisgisore1739]

I'm pediatrics resident , Dr Najeeb you are best Lectures, thanks so much

[@DoctorNajeeb]

Thanks for your love and support! Stay blessed ❤️

[@imtotallyme23]

Amazing explanation!! I understood absolutely everything. Thank you soo much!

[@mahammedsaadsaleh]

I'm medical student in aden yemen. Actually i was hating embryology so much even i thought i would fail in it, but after watching your videos i really have the completely opposite feeling toward embryology. Thanks so much and allah bless you

[@dr.priyanshu674]

In which country u r?

[@deenayounis2619]

Finally i understand this!!! Thank you doctor Najeeb!! 😭❤

[@meghahk5207]

sir foetal circulation i will never forget n my life

[@hilarybynes]

Hands down the best lectures ever. God bless you dr. Najeeb .

[@The123eyecandy]

amazing sir. thank you so much for simplifying things. your videos make us students understand concepts so well.

[@ridhazainab3225]

Blessed to have such a great teacher... Lots of respect and thanks to u sir

[@mollashumuye3136]

oh!! my God!!! u really special.u r truly 21st century Doctor.every difficult things you made it the easiest one, i have no idea,you different.i want be like you Doctor.nature really proud of you.long live Dr nejeeb

[@ariyams8759]

Thanks Sir...u r really Great..No words..Hats off to you👏👏👍👍

[@shami1024]

Thank you so much sir.i am very excited to see this lecture on youtube...I am having lot of interest in. 🚶🏃🚶PAEDIATRICS Awesome lecture you made it... Respected Dr.NAJEEB👍👍👍💐

[@romo3192]

I have never ever felt this kind of happiness before in my entire living life!! I have become an ADDICT to your video lectures. I am getting more and more confident and knowledgeable in my personal life as well as in my medical studies. I HAVE NEVER COME ACROSS A HUMAN BEING LIKE YOU SIR. Are you even human?

[@DoctorNajeeb]

Thanks dear for all love and support. 🌹

[@kashishsingh6660]

wow..What a lecture! Sir, Thank alot.

[@sushma0511]

I was really very confused abt dis topic n nw i hv no confusions ty sir fr ur wonderful explanation

[@dr.ashishsharma3636]

this guy is superb really i respect him from my heart thanks dr. najeeb for such a classical lecture

[@umairali-ul1ge]

amazing way to deliver lecture and clear all confusing concepts .... stay blessed . jazak Allah

[@shashisharma9850]

Its really awesome.... I learnt a lot from this video Thanku sir.every teachers should be like you

[@preyasharma4296]

I have scarcity of words to explain my gratefulness​ to you sir.

[@deepaverma1162]

Wonderful explanation sir 👏👏...the God must be happy today that I am clearing my concepts through your videos... thanks a million sir 🙏🙏🙏

[@vanrajpadhiyar4061]

Really great lecture. Sir thank you very much. God bless you. Sir please upload more and more videos.

[@YPKProductions]

You are amazing. Im studying medicine in England and you are the best lecturer I've ever had! Thank you!

[@123shainz]

this man is magician ....not from this planet....love and respect.....sir

[@swathisagar2833]

You are superb sir . Excellent lecture. Normally classes taken by most of the doctors is more borring. You are master blaster in lectures.

[@subigya01]

u hab been blessed to communicate the complex concepts in simple language..hope to see and enjoy your clinical videos as well!!!

[@brajesh9270]

A bow down to you dear sir 🙏❤️❤️ you're the master!!

[@rabianajma]

Wow! You are sucha darling. I enjoy watching your lectures. I must say your students are so lucky. If my teachers would have given me only 10percent of what you give to your students i would have been the luckiest kid on earth. You are amazing sir 💕

[@muhammadkashif5234]

love you sir.you have made embryo so easy that we can understand it more easily

[@shiladityachowdhury5524]

Wonderfully explained......just like all the other topics...Thank you so much.I feel every medical student should be taught by a teacher/guide like yourself.Stay blessed

[@tasnimebnath3292]

Best lecture ever sir... ❤️ thank you so much sir ❤️💞

[@hellenmengich1607]

Nice one

[@lenahope1]

I have one word for this video, BRILLIANT!!! Thank you so much as you put everything in prospective for me. I hope to one day specialize in the fetal heart and its circulation.

[@michael291186]

Thank you so much dr Najeeb for the lectures.

[@Haileyrocks360]

This helped me so much for my bio 12 test! Thank you!!

[@syedabdulmuneem4187]

May Allah bless you . Iam in final yr gynae/obs ward and this lecture helped me a lot . Thank you

[@shalinipatel2955]

thank you so Mch sir for making these amazing videos that r very understanding make our concept very clear. I m from king George medical university and watch ur videos to make my concept clear

[@nirvomind]

Thank you Sir for the Explenation , althought i am nota native English speaker it helps me understand .

[@shwetachaudhary1848]

Thank u so much sir,🙏🙏 explanation like this was seriously needed u r a boon to those students who don't have proper teaching staff. sir u r doing a great job sir.🙌🙌🙏🙏🙏🙏

[@TheSundayDrives]

i would definitely look through more of your lectures. one of the best lecturer ever!

[@hinakhokhar9186]

Thank you sir for uploading and sharing this great lecture

[@sumayyashaikh7076]

It's very awesome, amazing,understandable lecture sir.......Masha Allah........thnk u sir for making easy understanding of this topic........🙂

[@nyinggypo3373]

I love u with my all my heart sir,, nicely explained, god bless you,..

[@monicacavidayanson]

Dr. Najeeb , thank you so much for this very comprehensive lecture about embryology (fetal circulation). You are so great.,

[@rakeshmaharana2088]

thank you so much sir for your video for us, you are the best teacher in world........

[@nohakamel6790]

this was thorough and well explained , thank you

[@niladrimondal1078]

This person will be immortal through his lectures❤❤❤❤

[@FarukAhmed-dq8bj]

Thank you so much sir ... this is very helpful to us

[@adelaideadjei3893]

Best explanation, description and simplification of this topic. We need more lecturers like him in our medical schools for real!!!!!!!

[@tasnimebnath3292]

Best and best ever teacher ever ❤️

[@shradhashrivastava322]

Sir you are the best,amazing lectures leaving concepts crystal clear,big fan of urs,thank you so much :)

[@iniyavalmani1876]

Need a Teacher like you in all the field

[@saimashahzad8324]

Excellent explanation..Jazakallah khair

[@shreyagautam1756]

Thankuuuuu sooo much sir...for this much easy explanation

[@jauwjttyw1763]

NO WORDS TO EXPLAIN 💐🙏…..LOVE FROM INDIA

[@oceanwaves657]

MaShaAllah. This lecture is absolutely fantastic.

[@sanmeshgawande5656]

thankyou so much sir.......i wii never forget this lecture upto my last breath

[@manojaryal1577]

sir i am from Nepal..and your videos has helped me a lot ...thank you sir

[@yakatali5299]

Sir real teacher in medical Thank you so much sir by heart

[@lobnamoh8393]

Brilient Dr. Najeeb . Many thanks to you sir 🌺🌺

[@HWC-Mandi]

Really awesome sir......now I have clear fetal circulation.....

[@Vismayaize]

Wonderful........ Foetal circulation appears simple now.. Thank u sir

[@learnbiologywithdradan2433]

Dr najeeb you are too much special for us

[@kvnation4654]

Thank u soooooomuch sir...God bless u forever..this class is like diamond 👩‍⚕️🙏👍

[@Lima-rk1ev]

Sir u r commendable... Thankkkkkkuuuuuu very much

[@drdawson728]

Dr najeeb your a Good teacher. God blessings you