Cardiology - Cardiac Output

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Armando Hasudungan

10 жыл бұрын

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Пікірлер: 206

@armandohasudungan 10 жыл бұрын

Thanks for the comments guys. In regards to ionotropes I spelt that wrong, didn't look at how it's spelt before hand. And also I do also question how hypoxia decreases heart rate. I think it also increases it, but different books tell me different things. One thing is for sure though that when there is a decrease in blood levels and oxygen we tend to increase heart rate as the first compensatory mechanism. How long does this last? Not sure. So maybe hypoxia causes bradycardia in the long run. Don't quote me though. Cheers

@sotonmedstudent7018 10 жыл бұрын

hi man, great vid. As far as I know, hypoxia doesn't cause bradycardia...until the cardiorespiratory centre in the brain is starved of oxygen and then starts shutting down. By then though...the person is pretty much dead... or will need serious resuscitation. The body is really quite good at maintaining cardiac function under "normal" conditions, even in conditions of hypoxaemia. When the paO2 drops to around 8 kPa, (normally >10.6 kPa) the carotid chemoreceptors detect this fall and start ramping up cardiorespiratory rates (breathing and HR). Even if someone is chronically hypoxic, like someone with COPD, they can maintain a good enough cardiac output to not really notice until they exercise.

@molanm4390 10 жыл бұрын

well let's see if that benefits, I studied that mild hypoxia causes tachycardia due to stimulation of CAC and CIC, but severe hypoxia causes bradycardia due to damage of medullary center and nodal tissues of the heart (end in death)

@diplomat2623 9 жыл бұрын

LOVE your videos!!!!!

@emmelineduong 8 жыл бұрын

Hello! When are you are hyperventilating wouldn't you have a higher loss of CO2, so then you would be hypocapnia?

@farahkhan1964 6 жыл бұрын

sir hypercalcemia increases heart rate

@loveliveallthetime 10 жыл бұрын

FINALLY!! The video I've been wanting you to post!! MUCHAS GRACIAS!!!

@aurara96 10 жыл бұрын

I think I finally am starting to understand preload and afterload. You have an amazing ability to explain difficult material in a manner that is understandable! I look forward to future videos :D

@freddymendez4698 8 жыл бұрын

Great Job, nice and clear. I'm glad you mentioned the positive and negative chronotropic & ionotropic determinants in HR and Contractility, I had overlooked them and thanks to you I'm good on them! Again keep it up. God Bless!

@brunaprilipali8628 7 жыл бұрын

Your videos are the best! I have been learning a lot from your explanations since 2013! thank you so much! you really make the difference here!!!!

@Intentionallycourageous 9 жыл бұрын

Thank you Armando Hasudungan. Your videos really help.

@mrdb3po 9 жыл бұрын

easily the most clear presentation on cardiac output. Thanks Armando!!

@elinequirijnen922 4 жыл бұрын

You are helping me during these crazy corona times. Thank you very much!!

@hanachase 8 жыл бұрын

daaaaang. this is amazing. awesome art skills and an excellent explanation. thank you!

@carolinagondra1338 9 жыл бұрын

Excellent video! I passed my final histology exam thanks to one of your drawings of the skin layers! And now I am taking physiology. Great video. Helped me organize what I learnt in class.

@keylidxaffar9894 5 жыл бұрын

@Success Nduka Oduwegwu and i also passed my philosophy through this video. lol

@DivineSweetheart 10 жыл бұрын

I love your videos. Very helpful indeed. Thank you so much!

@clairefalcon8432 8 жыл бұрын

amazing video! It is so clear and really helped simplify things ! Thank you !

@yomarie09 7 жыл бұрын

Hi, can you make a video about the hemodynamics of the cardiovascular system; Resistance, blood pressure, velocity of flow? TY

@AisazzZ 7 жыл бұрын

Great Video! But can someone plz explain how does hypocalcemia causes tachycardia?

@NosaMandili 8 жыл бұрын

Great video ! Are we able to download your notes that u draw?? it's gonna be so helpfull.

@RueAdunola 4 жыл бұрын

This was definitely a GREAT video

@emmasarovich7092 7 жыл бұрын

Hi Armando Thanks so much for your videos they are helping me greatly through my health degree. You explain things so clearly and your drawings are fantastic. Awesome.

@adnanbashi9793 9 жыл бұрын

You my friend are a Legend

@Datboigioo 7 жыл бұрын

*is

@armyyyyyyyyyyyy 6 жыл бұрын

Fakhri Hakim are**

@urbanproductions5584 4 жыл бұрын

@@Datboigioo are

@quangvu1950 4 жыл бұрын

You're a true savior!!! Not all heroes wear capes.

@2012javad 10 жыл бұрын

Phenomenal job man. Well detailed

@Christina-ds7qk 9 жыл бұрын

you are the best! thank you for making this!

@Ice-jl4pq 6 жыл бұрын

This is really great! Thank you so much!!

@gaara.wifeyy 6 жыл бұрын

I enjoyed this very much! thanks!

@aswinanandh8964 7 жыл бұрын

Such a great video to understand Thank you

@pennstizzy 5 жыл бұрын

Thank you, very helpful. Will apply this knowledge to clinical application.

@emmanuelohisadominic8097 3 жыл бұрын

Thanks so much for the great work done. I always like this kind of learning, once again, thank you.

@avnibansal2248 2 жыл бұрын

Love your videos

@mehrrizvi2625 8 жыл бұрын

This really helped, thanks a ton.

@JuliaLivesCrazy 8 жыл бұрын

just wanted to say thank you!!

@esito069 10 жыл бұрын

Very well made, thanks for that.

@fahiroumaima923 8 жыл бұрын

can u make a tutorialof how to draw a heart like this ?

@shristidas7977 3 жыл бұрын

Lol...i feel you bro

@22-mohanyadav41 2 жыл бұрын

😂😂😂

@ahmedraouf9213 10 жыл бұрын

thnx a lot for this nice video , but what about the continue of this video ?

@anasabusaid2076 10 жыл бұрын

This what we called innovation thank you so much for your help

@anitakumar2634 9 жыл бұрын

Hi! Awesome video! Are we able to download a copy of your notes that you draw up? Theyre amazing!

@mgt6984 4 жыл бұрын

Wow, thank you very much for this lectures. Very educational indeed,

@magdalenansa8096 6 жыл бұрын

Thank you this video was so helpful

@zollingerellison1998 7 жыл бұрын

you are great ,man👏

@terencelouiesua4398 4 жыл бұрын

Thank you for the videos, hope you can also attached the reference you used for further study.

@mpfunder02 6 жыл бұрын

I love these videos

@esraamowafy8009 5 жыл бұрын

Thank you

@WaiKeat66498 6 жыл бұрын

Very good video! Thank for upload

@istapraqzun4303 5 жыл бұрын

You are the best... I only kam for your videos

@93revenge1 8 жыл бұрын

Man your are the best!

@ishrathfatimi1049 8 жыл бұрын

excellent videos

@muneebaec2841 4 жыл бұрын

Thank u so much . Its so helpfull

@asdasd446446 8 жыл бұрын

Really thank you for doing all of this . but is the ejection fraction is the stroke volume ? thank you .

@Shahnawaz15121 8 жыл бұрын

thank you so much Sir your videos help me a lot

@jaseenajazpkl3544 6 жыл бұрын

thanks a lot sir...all ur vedeos are very usefull

@skyman2906 8 жыл бұрын

Thanks ,Best lecture!

@adarshsrinvas98 8 жыл бұрын

Your videos are really useful...Great job!! ..Please make a video on cardiac regulation .....

@jamesstark5008 5 жыл бұрын

Good, concise vid. Thannks

@ayaosama8983 8 жыл бұрын

Thank U very much ... it's simple and brief

@marcialbonifacio3285 7 жыл бұрын

thank you very much. this was very helpful

@bansoorshaik7543 7 жыл бұрын

Excellent sir

@madisoneckhart7999 9 жыл бұрын

Fantastic video.

@sokarburhan324 9 жыл бұрын

thanks for you amazing way to teach us☺️ I get benefit from your video more than from my doctors! could you plz upload your writing ?!

@hussam023 10 жыл бұрын

Gr8 video. Helped alot :)

@AmandaVeniVidiVici 7 жыл бұрын

You say at 5:15 that preaload is the volume entering the heart, but preload is the total volume of all the blood in the heart at the end of diastole (including direct flow, retained flow, delayed ejection flow and residual volume).

@AmandaVeniVidiVici 7 жыл бұрын

At ~6:00 you also say that the amount of blood entering the heart is about equal to the amount leaving the heart and that is true. But directly after you say that that "end diastolic volume ~ stroke volume", and that is not correct. The end diastolic volume is ~120ml for a normal person. At the end of each heart stroke there is about 50 ml left in the heart (the residual volume). The normal stroke volume is 70ml (120-50=70). This can be seen in a pressure-volume-loop.

@paolaandreaduranmartinez1741 9 жыл бұрын

finally. I understand the cardic output wow! :)

@silviaboneva7283 5 жыл бұрын

Thank you 😊

@lorenapinedo2316 8 жыл бұрын

Great video, where is the second part?

@makakaoshi 10 жыл бұрын

Good video. Greetings from Chile.

@shanbazaz 6 жыл бұрын

Did you ever upload the video about the cardiac cycle ? I'm talking about the graph you mention at the very end. Can't seem to find the video about the subject.

@Adityadraw 7 жыл бұрын

lovely videos from you

@selimeaksit1749 8 жыл бұрын

Best best best videos everrt

@17cardigan21 7 жыл бұрын

You make some incredible videos! Very helpful study tools. The only thing that I could suggest is showing one final screen shot of everything all at once. That way you could test yourself using that image. Thanks again for these amazingly helpful videos. I hope to see you illustrating anatomy text books one day.

@ubiquitousfan4721 7 жыл бұрын

Agree.

@hannansabah 7 жыл бұрын

nice drawing and explanation well done

@marebearzzz027 9 жыл бұрын

SO GOOD!

@DD-hu7ix 9 жыл бұрын

do u kno where i can get an image of this?

@pediatrician6572 2 жыл бұрын

thank you.

@Tasha19ist 8 жыл бұрын

brilliant :D easy to follow too thankss

@Cherishable00 6 жыл бұрын

Really nice one Sir... knowledgeable...am 4m India

@samruddhisonkar943 10 жыл бұрын

thank you very much......

@A211992 7 жыл бұрын

Hello. Can you upload the picture you have drawed?

@elanko2804 6 жыл бұрын

continuation of this video is missing.where can i watch it?

@abdelraheemahmedtagian5901 9 жыл бұрын

Very good

@juliancristy6128 5 жыл бұрын

Thanks!

@autopsy69 8 жыл бұрын

Thankyou so much :D

@stephanieisidro711 7 жыл бұрын

you are awesome!

@Syzyro 10 жыл бұрын

Excellent video, very helpful. I have one question though. Help me understand why is hypocalcemia a positive and not a negative chronotropic factor?

@roger328053 8 жыл бұрын

Thank you very much.. One question, why positive chronotropic raise hypercapnia? farewell

@lumaluma2830 6 жыл бұрын

Thank you very much,you saved me,I have exam and I was not understanding anything

@daveiajohnson332 8 жыл бұрын

is stroke volume the same as systolic debit?

@carolinetan194 10 жыл бұрын

Thanks very much :)

@throughthescope7652 10 жыл бұрын

First comment,lol. Thank you for these videos, they really make things easier for me.

@Chillinsaga 8 жыл бұрын

does preload have to do with volume?

@bushrarasheed9611 8 жыл бұрын

very helpful thank you :)

@jessiecap8773 6 жыл бұрын

Thank u

@johnfrietzhinahon9750 8 жыл бұрын

i disagree with regards to the equivalence between preload and end diastolic volume. there is what we call ejection fraction, which is a percentage of volume being ejected from the ventricles. this means not all the end diastolic volume is being ejected per pump. it's only a percentage. great visual presentation though. i like it

@urbanproductions5584 4 жыл бұрын

@PriyankaSingh-ez3is 6 жыл бұрын

thanks alot

@chiranthiekarunaratna3205 10 жыл бұрын

I get why there would be -ve ionotrophy with hypocalcemia (and vice versa) but why +chronotrophy with hypocalcemia?

@time_traveler35 5 жыл бұрын

Does hypercalcemia raise or descend the heart rate??

@saintisraelmedi7686 7 жыл бұрын

Excellent ☝🏼👌🏼👏🏽✍🏼

@shazak9095 10 жыл бұрын

in the video you stated that hypocalcemia is a + ionotropic effect, and then at the end you said that hypErcalcemia is a + ionotropic effect, which one is it and why?

@namjoonismyhusband1530 8 жыл бұрын

Can someone tell me where can I find the cardic cycle graph video? it's not there?

@mohammadragheb4962 7 жыл бұрын

Me too 😢

@ubiquitousfan4721 7 жыл бұрын

What cardiac cycle graph? You mean, what you see in the ECG?

@hsmnadhrahzulkifli7859 7 жыл бұрын

did u find the video?

@11ayesharinad27 3 жыл бұрын

U can go through Guyton ✌️

@RubberDuckie00 7 жыл бұрын

Omg you saved me thanks

@kriselavojniku7891 7 жыл бұрын

Excellent

@mustafaalais1243 10 жыл бұрын

hey man great work .... are you going to make a video about ECG soon ??

@armandohasudungan 10 жыл бұрын

mustafa abboud One day! one day..

@gidellpalos4166 8 жыл бұрын

where is the cardiac cycle video?:)

@Divinelyloved_2024 9 жыл бұрын

Would you please continue to post your pictorial diagrams on google drive. Thank you for your dedication and assistance with knowledge acquisition to all of us thriving to understand the complexities of science.