Cardiac Cycle | Cardiology | Systole & Diastole | Cardiovascular🫀

#drnajeeb #cardiology #cardiaccycle #medicines #systolic #diastolic
Cardiac Cycle | Cardiology | Systole & Diastole | Cardiovascular🫀
Like this video?
Sign up now on our website at www.DrNajeebLectures.com to access 1000+ 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 $59 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 1000+ 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 ▬▬▬▬▬▬▬▬▬▬
00:00:00 Start
00:00:47 What Is Cardiac Cycle?
00:01:41 Events In Left Side Of Heart
00:07:49 Onset Of Ventricular Contraction
00:10:52 Closure Of Mitral Valve (First Heart Sound)
00:12:30 Isovolumetric Contraction
00:14:30 C Wave
00:18:30 Rapid Ventricular Ejection
00:22:49 V Wave
00:25:43 Slow Ventricular Ejection Phase
00:30:45 Isovolumetric Relaxation
00:35:10 Rapid Passive Ventricle Filling Phase
00:38:50 Slow Passive Filling Phase
00:42:12 Repetition Of Cycle
00:43:05 Time Od Systole And Diastole
00:45:30 Heart Sound During Cycle
00:49:55 Pressures In Multiple Vessels And Chambers
00:50:53 Q&A About S3 And S4
00:51:55 Graphical Representation Of Cardiac Cycle
00:52:26 Parameters
00:52:45 Atrial Contraction
00:57:06 Rapid Progressive Filling Phase
01:05:06 S3 Sound
01:05:22 Slow Progressive Filling Phase
01:05:38 S4 Sound
01:08:45 Ecg
01:10:30 Summary
---------------------------------------------------------------------------------------------------------------------------
The cardiac cycle is the performance of the human heart from the beginning of one heartbeat to the beginning of the next. It consists of two periods: one during which the heart muscle relaxes and refills with blood, called diastole, following a period of robust contraction and pumping of blood, dubbed systole. After emptying, the heart immediately relaxes and expands to receive another influx of blood returning from the lungs and other systems of the body, before again contracting to pump blood to the lungs and those systems. A normally performing heart must be fully expanded before it can efficiently pump again. Assuming a healthy heart and a typical rate of 70 to 75 beats per minute, each cardiac cycle, or heartbeat, takes about 0.8 seconds to complete the cycle. There are two atrial and two ventricle chambers of the heart; they are paired as the left heart and the right heart-that is, the left atrium with the left ventricle, the right atrium with the right ventricle-and they work in concert to repeat the cardiac cycle continuously, (see cycle diagram at right margin). At the start of the cycle, during ventricular diastole-early, the heart relaxes and expands while receiving blood into both ventricles through both atria; then, near the end of ventricular diastole-late, the two atria begin to contract (atrial systole), and each atrium pumps blood into the ventricle below it. During ventricular systole the ventricles are contracting and vigorously pulsing (or ejecting) two separated blood supplies from the heart-one to the lungs and one to all other body organs and systems-while the two atria are relaxed (atrial diastole). This precise coordination ensures that blood is efficiently collected and circulated throughout the body.
---------------------------------------------------------------------------------------------------------------------------
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

[@sukhdanagpal8616]

Tomorrow is my physiology exam and i am so confident about cardiac cycle now thankyou sir 🙏 amazing explanation

[@wandererakshay3168]

Mine also same❤️

[@palashmallik6729]

@@wandererakshay3168 he forgot X atrial descend and S2 sound in between while explaining 😪

[@AnandhuMVijay]

Are you a MIT student

[@abiame278]

I'm sorry 4 u!! have u used this great job 4 little matter? 😢

[@emmanuelkayelu8117]

@@wandererakshay3168 the room with you I think you're right it's been awhile to be done soon and then the same as last week of October and so is this is what I've done with it is well for that you are in a good friend wants me know what I want and I'll pay it for me or maybe a while now but I'll let her we were just a few more weeks to you later am I even have you seen any time you need anything from Walmart I can be ready in about a month to be done with it to you on App the room with you I got the applications and so is it going there to be done with your martial art and so I have you a lot too and so I have no choice I can be ready in about you all have to you 🤗❣️ you can do you mean the guy that has the most cases are there was an update us and the Nucleophile I can be a while ai stock up our program for that to you so I could have a good friend and so I could do you mean the paper I don't think too serious I can be a Big boys and so is this is what we're looking to be done by saying it would even better the way I don't think I can make matters in my car for that to you later love 😘 you can do the application to get a while ai prime to twitch on the porch to the store to be done soon I hope it works for the update on your side you doing this evening I have no choice you can do the certification for that to happen for a surprise to be done by seeing it on your deployment is it going there now fine thank God they fired the same as well and the other party and you are the one of you came out to be done with it was just me that he comes for a bit of you guys breakup and the Shoulder I can be ready in a single Exeh you're not even better the last last time we eat I don't think so very sorry I was out later in this game I understand I have no clue the room for that to happen I can be a while ai 🤔 you can do the needful immediately before the end there are some people are quietly in my house to you later today we where looking forward you a call tomorrow to discuss that was great I love the color I want a ride and so I could have been doing it to the bank to be there at all times in my car I can be ready for that I know right 😁 Ok nowander it is the first thing that you are in my prayers within their own way so we will have anI the room for that I have no clue appointment on Friday night for me

[@kwahi1733]

Such an impressive professor! Only certain people truly know how to "teach," and this talented man is one of them!

[@HUMZA950]

Lucky are those student's who’s professor is dr najeeb sir

[@medicalclassroomyahyakhanbarsa]

Your right😍

[@SB-cj8re]

Humza Iqbaal Shaikh : Najeeb*

[@joinmyjourneytodoctor4866]

Whose*

[@ananyasharma3530]

Is this for neet .can I watch this for neet please reply??

[@gunjansharma9441]

@@ananyasharma3530 you can watch if you want to. it makes cardiac cycle easy to understand.

[@sadafmemon5262]

Literally the most best lecture on youtube of cardiac cycle .. ❤

[@DoctorNajeeb]

Glad you like my teaching methodology. Thanks ❤️

[@briannduati08]

As a clinician and an echo tech this lecture was one of the most crucial in gaining understanding about cardiac physiology in terms of pressure, volume and time changes in a cardiac cycle. May the Lord Jesus bless you sir, and bless the work of your hands

[@hameempromity720]

Really u r such a professor who performs his job perfectly and that is making any student's conception absolutely clear about any concept.

[@DoctorNajeeb]

Like this video? Master Medical Sciences with Dr. Najeeb. Watch 800+ videos on Basic Medical Sciences & Clinical Medicine in member's area at www.DrNajeebLectures.com. New videos every week with download option. ──────────────── MEMBERSHIP FEATURES ──────────────── ► 800+ Medical Lectures. ► Basic Medical Sciences. ► Clinical Medicine. ► New videos every week in HD. ► Download videos for offline access. ► Fast video playback (0.5x - 2x) ► Watch videos on any device. ► Fanatic customer support. ► Trusted by 2M+ students. Learn more at www.DrNajeebLectures.com/

[@Uniqueworld11199]

You're really one of the best medicine teacher of all the times, Love from India sir 🙏🙏🙏

[@DoctorNajeeb]

Thank you so much for your love and support!

[@ruthrogers3925]

Just learnt today the cardiac cycle and am a happy medical student from Kenya.. be blessed 🤗

[@DoctorNajeeb]

I'm happy to hear that. 😊 God bless you too. ✨ Happy learning. 😍

[@Little_Doctor1]

Nobody has made Cardiac cycle this easy to me. Thank you very much sir. God bless you ❤️

[@reuvenmeirherrera9580]

Wow, im a medical student and i NEEDED this type of "TEACHING Method" . Im a visual learner and the way you teach, DR. Najeeb, is extremly helpful for visual learner like myself. Thank you and G-d bless!

[@DoctorNajeeb]

Glad you loved my teaching methodology! Stay tuned ❤️

[@AnandMishra-th9ss]

@@DoctorNajeeb pls add more free videos in utube itself

[@amitdhyani5156]

Finally i am able to understand my each heartbeat process😁✌️. Shukriya sir 😌

[@ragulj2375]

Awesome sir u given the cycle with clear idea I can't forget it anymore...thank u very much:)

[@nehatarannum2253]

I can't forget this lecture Thank you sir

[@DoctorNajeeb]

You're welcome, stay blessed. :)

[@jhorapalok2223]

Sir... I'm not a medical student...but any way I fill with an unknown pleasure after watching your video..... because I want to be a doctor, which is not possible for some reasons... So your videos give me satisfaction... that.... though I'm not a doctor,but still I know lots of fact about human body Thank you so much Sir😊🙏🙏

[@superdavid4593]

Its literally wonderful that understanding this concept took around more than hour but indeed heart cycle occurs in second. I love your performance Sir

[@DoctorNajeeb]

Glad you loved my teaching methodology! Stay tuned ❤️

[@mohammedumarfarooqui6373]

Thank you sir for making my concepts clear

[@farahdeeba3575]

Sir I met you in SIR GANGA RAM hospital Lahore! I was pretty much inspired by your story ! Sir I am your diehard fan! You are doing great job sir! Allah will surely pay you for this! May Allah give satisfaction to your WIFE """SHAMMA""" soul

[@aliafridi7839]

Hello what sir was doing at gangram hospital

[@zoeaslam7111]

sir,i have graduated but i was unable to get hold of this topic and suffered in various exams as well,today u have made it so easy as it was nothing :) thank you so much

[@PussInBoots017]

Thank you!!! You made my life at the college so much easier. Greetings from Romania!!!

[@eleanorvanderzwan1494]

You are a godsend!! thanks you Dr. Najeeb !!

[@kanishika232]

It's really so good that give different level of satisfaction by studying with your lectures . Thank you sir 😊😊

[@pdcbamabama1890]

Sir, your amazing. No words to applaud you sir. Your love for the subject is expressed in your teaching. Physiology I have learnt was hard n it's made interesting bcos of you. Thank you sir. This thanks isn't enough.

[@Fatimayusuf08]

doctor this is amazing thank you thank you thank you

[@gulrezkhanbaloch]

God blessed students who have you sir ...Love and Rrspect from Russia

[@iloveharrypotter000]

test tomorrow, watched this video and everything was explained beautifully in such a short time. Electrical and mechanical both shown on the diagram and explained succinctly was my personal favorite , much appreciated Dr. Najeeb!

[@ravindrabhatt3781]

Wonderful thanks alot

[@crafteezbyFami]

I can't thank you enough for making this video.

[@kanikamunjal5546]

I am 1 year medical student ...and ur lectures are so amazing . I am fallen in love with physiology after watching ur lectures .... Thank u so much sir..

[@DoctorNajeeb]

That’s so nice of you. Students like you keep me going. More power to you.

[@Teume820]

thank you very much dr.najeeb, you're really helping me in summarizing this part. i am first year medical student in egypt seeking for more useful lectures from you in physiology subj.

[@DoctorNajeeb]

Thank you so much

[@tube442]

I have never seen amazing teacher like him in my life.he make learning a fun thanks a lot for your contribution sir

[@nishabaranwal8660]

sir u r my only hope in physiology thank you sir

[@caskettsolo7925]

THANK YOU SOOOOO MUCH SIR! ELOQUENTLY EXPLAINED AND LEFT WITH NO DOUBTS AT ALL!!!!

[@salimakhadidja1204]

Doctor you're the best teacher I ever seen ! With your lectures we understand more and so we are more confident about ourselves thing we have lost since starting medical studies .👍 following you from Algeria 🇩🇿

[@DoctorNajeeb]

Thank you so much for your love and support. Stay blessed :)

[@alinaa8315]

Thank you for providing this lectures online 🤗💜This has helped me to learn all the concepts starting right from the base . Now learning online hasn't been fun everyday but compulsory & amidst of this pandemic , all we can do is pray to get things back to normal again ✨

[@DoctorNajeeb]

Glad it was helpful stay blessed. :)

[@googlefacts8337]

@@DoctorNajeeb sir when I see u first time in u tube I remember munna bhae films teacher is same to u 😊

[@dr.najeebullahqadir5858]

Best detailed lecture on the entire web sir.

[@Lancewalks]

Amazing detailed explanations! I learn by understanding and not memorizing so thank you!

[@abdirahmanissack2910]

Can't stop listening to this thank you so much soo clear than my mother tongue

[@DoctorNajeeb]

You're very welcome❤

[@punarjaniayurvedamedhahegd2933]

The best lecture for medical sciences ! Great of you sir! Thank you so much Dr Najeeb Sir ! Please explain all regarding medical field..Hope u understand our hunger...

[@mullahateeq9801]

Am also ayurvedic student

[@12-rishitha20]

This is the best lecture for cardiac cycle sir... Love pouring frm india

[@srivaniputrevu7351]

Ur the best teacher i have seen till now.

[@alsamhalsamhi2044]

I can call you the professional physiologist and the king of teaching ways.

[@lightooezzo6791]

Just amazing professional doctor❤

[@sajadali6899]

such kinnda sir can make everyone expert..... appreciated .....

[@DoctorNajeeb]

Glad you liked it. Stay blessed 💗

[@vaishnaviramakrishna265]

you made cardiac cycle very clear and easy Sir!!!!! Thank you a trillion times👏👏👏👏👏👏👏🙏🙏🙏🙏🙏

[@baseedabdul1813]

Many years have passed and many things have changed , like technology,many platforms but your explanation will always helps to every student ... Thank you

[@DoctorNajeeb]

Thank you for all the love and respect dear ❤️ Keep supporting ❤️

[@gegeelmogsbi9863]

you are the best Dr. najeeb thank you so much 💞

[@sanskritidutta]

sir,ur simplicity of explanation is unmatched. u are an absolute genius. even a child can understand ur lectures are so good and easy to understand.

[@sandipgarain7253]

AWESOME elaboration....very lucid and amazing..thank you so much, sir

[@vln1985]

Amazing!! Sir.... all the doubts are cleared..I started searching your lectures on every medical subject for getting a crystal clear picture of that area...

[@sahildisodia4870]

Couldn't had been explained better sir, seriously great job sir!!!

[@huzaifabehram4400]

It is extremely helpful.. Its fabulous nd covered each nd every thing..

[@sillygirl9672]

you are really an amazing teacher in the whole world and your method of teaching and talking is really amazing.Thanks for this beautiful lecture

[@chitrangicharan2344]

I really wish i could meet you once in my life..to thankyou for your beautiful efforts....and helping me for passing my exams 🙌🙏

[@shanbadshah19]

Best teacher in the world Thank you so much sir

[@fatimafarrukh5118]

I am in 10, taking ur lectures . I think they are great and very helpful for me , I understood ur all lectures. thanks DR NAJEEB .

[@anuskadas8545]

I just rally want to thank you sir for explaining cardiac cycle as an interesting story. Thank you soo much sir for explaining every phase so clearly 🙏🌻

[@Ethereal_Queen]

I'm really grateful to have this lecture about Cardiac cycle. I was so confused about the pressure graphs before but You made it clear and perfect. All my doubts are clarified now. This is the best and neat lecture ever to watch and to understand. One hour lecture & Every second is worth it . Thank you Sir , means alot ❤️

[@DoctorNajeeb]

Glad it was helpful and you enjoyed my crystal clear concepts. Keep supporting ❤️❤️

[@mauryanaina45]

@@DoctorNajeeb will you please share notess sir please you explained soooo very well I just lovedddddd ittttt

[@amiraahmed2265]

l'm from Egypt.. it is the first time for me to watch a vedio at this channel ,but I want to say it won't be the last.. this was very brilliant ..thank you very much

[@akashagarwal2332]

Best video i have seenon cardiac cycle

[@NAYAAB]

Thank you so much, sir. Your explanation is incredibly thorough and helped me clear up concepts.

[@DOCTOR_ABHISHEK]

Hello

[@kalpanamaitra9548]

Really sir....your teaching is THE BEST....

[@DoctorNajeeb]

Thanks a ton❤️❤️

[@Fatma-Abubakar]

Doctor u r brilliant!!

[@soniakumari1722]

Thank you so much sir for giving this lecture

[@shehlaaamir4997]

Yes sir , your lectures are mind blowing. I m also 1st year medical student and i am just amazed when i listen your lecture.Your lecture are so interesting. Thank u sir

[@shanzazahra4571]

Its really good

[@salehmajeed9480]

This kind of explaining is the best, asking questions while you explain and repeating important information, You are my teacher, and hello from Kurdistan

[@anfalhamid7820]

Thanks DOCTOR!

[@ramalatha2212]

I really thank you for your lesson

[@heavenmulugeta8645]

Thank you for providing such interactive lecture

[@seharaliseharkhan996]

Great sir I'm nursing students ,after this video I have more confidence,jazak ALLAH khair.

[@shahubaid1125]

Thanks 😊 sir I have cleared my all concepts

[@sahraxuseen4263]

Thanks Dr I understand very well your explain thanks

[@imanmano7057]

I admire you alot, Thank you very much for everything you do, I have never understand arrhythmia before watching you videos on yotube. Such a great person you are. Thank you 🙏

[@danishmahmood2002]

Mind blowing u r master of concept dear sir Najeeb and those students are very lucky that they have a teacher like you I really want to take a lecture from you by face

[@amal4449]

Other lectures may take more than 3, 4 classes regarding this subject.. but najeeb sir only take one class to understand... great work sir. May god bless you

[@DoctorNajeeb]

Thank you for your kind words. 😊😍 God bless you too. ✨✨

[@imranmusic007]

You are the whole institution 👑

[@DoctorNajeeb]

Thank you for your love and support! ❤️

[@sayantanchoudhury8473]

Tomorrow is my physiology exam and m confident for cardiac cycle after watching this video

[@shklnxdr]

I saw about 4 videos but nothing made it as clear as yours. hats off. I will try if I can remember it all though, but surely will not be a total stranger into it.

[@sauravpandey7459]

Thank u. Sir u have explained this topic in a best possible way.

[@dmagreetanongrang5865]

Sir you are truly the real hero of my life becoz of ur teaching ...I love ur teaching

[@manika1060]

Sir you are god you have explained cardiac cycle so nicely that I can't forget it ever Thanku very very much sir

[@DoctorNajeeb]

That’s so nice of you. Students like you keep me going. More power to you.

[@jhansichaudhary8971]

Wow your classes are amazing sir all of us were watching this and realized even our professor watched and taught it this way! ... So thankful to you. Lucky are your students 😊

[@aliafridi7839]

Same in our college teachers give lectures like she is just their to explain herself

[@davidgyunda8240]

Thanks for this dr who devoted his time to teach

[@DoctorNajeeb]

Thank you so much for your love. Stay blessed ❤️❤️

[@ranikhan3963]

Thank you sir for uploading this lecture here.....Crystal clear concepts by your lectures 👍👍👍

[@anonymous_girl692]

Alhamdulillah sir Blessed to have someone like you 😍 Concepts are really so clear MashaAllah you are true gem for us 💎 Praying for your success InshaAllah ❤️ love from Pakistan 🇵🇰

[@salomejohn6869]

Thank you sir. I now understand the function of the heart.

[@rituranjan8445]

thank u sir for this lecture....i had missed lectures on cardiac cycle....now i dont regret missing that...

[@chitrangicharan2344]

Your way of teaching is that much easy that even a non medico will understand everything easily.. You cleared my concept for cardiac cycle for which i was struggling from hours.. Didn't imagine it would be this much easy.. Hats off sir 🙌🙌

[@DoctorNajeeb]

Glad to hear that

[@kamelabuamsha4603]

Thank you sir for this

[@santidaschakravarty5391]

Sir you have explained the topic in very lucid. You are a wonderful teacher. Please be in good health. You are an asset in the world of medical studies. Regards

[@fazilasajjad2441]

Great Sir

[@ahmeda8321]

Thank you Sir , it was really helpful .great presentation

[@suravishnumanjith9470]

it's a beautiful explanation on cardaic cycle sir.....thanks for explaining it very cleary...it made me lot of sense...

[@sararam7801]

Hi Dr, my 8th grade son learned basic concepts of the cardiac cycle with your amazing lecture. Thanks!

[@DoctorNajeeb]

Glad it was helpful! ☺️

[@iqra7899]

Thank you so much sir❤️

[@DoctorNajeeb]

Most welcome💖 Keep supporting💖

[@swatijain6343]

thank you so much sir... this difficult topic is explain in very easy manner I am lucky to see your lecture......

[@manjudubey4483]

Thanking you for your presious efforts respected sir ❤️

[@shivaniparihar9147]

Thank u so much sir..u really made cardiac cycle easy and simple

[@Shamimhasankhan]

tq sir very very extraordinary teaching i want more and videos from u