CARDIAC PHYSIOLOGY; PART 6 by Professor Fink.wmv

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In Part 6 of Cardiac Physiology, Professor Fink reviews Ventricular Hypertrophy, Preload and Afterload in the Heart, and Cardiac Output and the major determinants (including Heart Rate, myocardial contractility, Stroke Volume, Venous Return, Starling's Law of the Heart). Reference is made to Congestive Heart Failure, and Digitalis.
Check-out professor fink's web-site or additional resources in Biology, Anatomy, Physiology & Pharmacology: www.professorfink.com
Down-loadable e-books of the Lecture Outlines by Professor Fink (as well as "hard copy" versions) can be purchased from the WLAC Bookstore at: onlinestore.wlac.edu/fink.asp

Опубликовано:

15 май 2012

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Комментарии : 24

@Spirituallyfocused 10 лет назад

Your lectures help make things make sense and helps me connect everything together. I have watched lectures 1-6 so far for Cardiac Physiology, and I really appreciate them. Thank you so much for sharing these!

@VanessaFrancoATL 10 лет назад

Thank you for posting your lectures on RU-vid. The cardiac series has been extremely helpful.

@jaruiza 8 лет назад

Prof. Fink! You are the best! I love these lectures. I am currently in nursing school, and the text makes me fall asleep. So, I read some of the text, then watch your videos to wake me up! You are a lifesaver.

@alexkozonis5041 8 лет назад

intergalactic lecture.....THANK YOU PROF......GOD BLESS YOU.....

@mavrochris 9 лет назад

professor Fink that was an absolutely amazing lecture !! thank you !

@annakins15 10 лет назад

Absolute amazing. Thank you!!

@suomynonaanonymous 8 лет назад

So helpful, I love your lectures!

@rawezhmajid9435 6 лет назад

I finished all parts of cardiac physiology ...thanx alot

@Sophiem1415 8 лет назад

best dr ever!

@binigirmachew91 10 лет назад

Thank you!!!

@venkatesanmunusamy7319 2 года назад

Thank you SIR

@pratapvenkat4984 8 лет назад

hello professor what is the difference between heart rate and pulse does they fluctuate

@12821105 12 лет назад

Dear Prof. Is they relationship between the Hooke law and Frank-Starling Law of the heart ?

@wassimabdou7649 5 лет назад

thank you

@MrAzitaokeefe 11 лет назад

yes it does

@MrSHFA1 11 лет назад

hello prof. does the cardiac physiology part 4 exist ?? thank u

@maryellenwaite1358 2 года назад

Super

@ezatullahakbari6199 6 лет назад

Tnx❤️❤️❤️❤️❤️❤️❤️❤️❤️

@imtru2dis 7 лет назад

Dear profesor fink, I wanted to ask a question about heart rate and its relationship with cardiac output because youve brought to light an issue with CO = HR x SV [I dont intend to cause any confusion, i just want to clarify, if there's something missing with what im about to say]. In ALOT of texts, it is stated that an increase in Heart Rate SHOULD THEORETICALLY cause an increase in Cardiac Output, BUT in reality, an increase in heart rate causes decreased filling time. Since there's decreased filling time, theres LESS time for the ventricle to fill, so the volume of blood in the ventricles lessens(decreased EDV) and there is decreased contractility (Starling's Law) and hence, decreased STROKE VOLUME. If there is decreased stroke volume, wouldnt that be a DECREASED cardiac output? If that is the case, is there any factor that should be taken into consideration when looking at this.

@professorfink 7 лет назад

You are correct that as HR increases, the filling time decreases. However, there is still adequate time for the ventricles to fill UNTIL THE HR EXCEEDS (becomes greater than) about 160 BPM. SO, during exercise, increasing HR and increasing myocardial contractility (which increases SV) both increase CO -- until about 160 BPM. AFTER THAT, even if HR increases, the decreasing filling time starts to reduce SV, causing a drop in CO. Thank you for your excellent question.

@imtru2dis 7 лет назад

Thank you very much for clearing this up! And as always, your videos are amazing.