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Cardiology - Cardiac Output
 
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Views: 367187 Armando Hasudungan
Regulation of cardiac output
 
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Subject : Food and Nutrition Paper: Human Physiology
Views: 1064 Vidya-mitra
Cardiovascular | Cardiac Output | Frank Starling's Law
 
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SUPPORT | https://www.gofundme.com/ninja-nerd-science Ninja Nerds! Join us in this video where we discuss cardiac output. We go into great detail on how cardiac output is dependent upon stroke volume and heart rate, along with applying that to Frank Starling's law of the heart. ***PLEASE SUPPORT US*** PATREON | https://www.patreon.com/NinjaNerdScience ***EVERY DOLLAR HELPS US GROW & IMPROVE OUR QUALITY*** FACEBOOK | https://www.facebook.com/NinjaNerdScience INSTAGRAM | https://www.instagram.com/ninjanerdscience/ ✎ For general inquiries email us at: [email protected]
Views: 57028 Ninja Nerd Science
Cardiac Output, Stroke volume, EDV, ESV, Ejection Fraction
 
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Cardiac Physiology Basics. This video and other related images/videos (in HD) are available for instant download licensing here: https://www.alilamedicalmedia.com/-/galleries/images-videos-by-medical-specialties/cardiology-and-vascular-diseases ©Alila Medical Media. All rights reserved. Voice by: Sue Stern. Support us on Patreon and get FREE downloads and other great rewards: patreon.com/AlilaMedicalMedia CARDIAC OUTPUT is the amount of blood pumped by each ventricle in one minute. It is the product of STROKE VOLUME – the amount of blood pumped in one heartbeat, and HEART RATE – the number of beats in one minute. An INcrease in either stroke volume or heart rate results in INcreased cardiac output, and vice versa. For example, during physical exercises, the heart beats faster to put out more blood in response to higher demand of the body. It is noteworthy that the ventricles do NOT eject ALL the blood they contain in one beat. In a typical example, a ventricle is filled with about 100ml of blood at the end of its load, but only 60ml is ejected during contraction. This corresponds to an EJECTION fraction of 60%. The 100ml is the end-DIASTOLIC volume, or EDV. The 40ml that remains in the ventricle after contraction is the end-SYSTOLIC volume, or ESV. The stroke volume equals EDV minus ESV, and is dependent on 3 factors: contractility, preload, and afterload. Contractility refers to the force of the contraction of the heart muscle. The more forceful the contraction, the more blood it ejects. PRELOAD is RELATED to the end-diastolic volume. Preload, by definition, is the degree of STRETCH of cardiac myocytes at the end of ventricular filling, but since this parameter is not readily measurable in patients, EDV is used instead. This is because the stretch level of the wall of a ventricle INcreases as it’s filled with more and more blood; just like a balloon - the more air it contains, the more stretched it is. According to the Frank-Starling mechanism, the greater the stretch, the greater the force of contraction. In the balloon analogy, the more inflated the balloon, the more forceful it releases air when deflated. AFTERLOAD, on the other hand, is the RESISTANCE that the ventricle must overcome to eject blood. Afterload includes 2 major components: - Vascular pressure: The pressure in the left ventricle must be GREATER than the systemic pressure for the aortic valve to open. Similarly, the pressure in the right ventricle must exceed pulmonary pressure to open the pulmonary valve. In hypertension for example, higher vascular pressures make it more difficult for the valves to open, resulting in a REDUCED amount of ejected blood. - Damage to the valves, such as stenosis, also presents higher resistance and leads to lower blood output. All images/videos by Alila Medical Media are for information purposes ONLY and are NOT intended to replace professional medical advice, diagnosis or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.
Views: 211096 Alila Medical Media
The Regulation of Cardiac Output
 
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A description of the factors regulating cardiac output. Mainly focusing on the factors that influence stroke volume.
Views: 154 MyelinNation
Frank-Starling mechanism | Circulatory system physiology | NCLEX-RN | Khan Academy
 
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Carefully follow 5 different preload scenarios to see how each one will have a different effect on how actin and myosin line up. Rishi is a pediatric infectious disease physician and works at Khan Academy. Created by Rishi Desai. Watch the next lesson: https://www.khanacademy.org/test-prep/nclex-rn/nclex-rn-circulatory-system/preload-afterload/v/sarcomere-length-tension-relationship?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn Missed the previous lesson? https://www.khanacademy.org/test-prep/nclex-rn/nclex-rn-circulatory-system/preload-afterload/v/preload-stretches-out-the-heart-cells?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn NCLEX-RN on Khan Academy: A collection of questions from content covered on the NCLEX-RN. These questions are available under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License (available at http://creativecommons.org/licenses/by-nc-sa/3.0/us/). About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s NCLEX-RN channel: https://www.youtube.com/channel/UCDx5cTeADCvKWgF9x_Qjz3g?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 356690 khanacademymedicine
Cardiac output and stroke volume
 
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Cardiac output and stroke volume - This cardiovascular system lecture explains about the definition of cardiac output and stroke volume. This lecture elaborates the cardiac output as the amount of blood pumped per minute by each ventricle and stroke volume as the volume of blood pumped by the ventricles with each heartbeat. This cardiac output and stroke volume lecture states the equation of cardiac output in terms of heart rate and stroke volume. For more information, log on to- http://www.shomusbiology.com/ Get Shomu's Biology DVD set here- http://www.shomusbiology.com/dvd-store/ Download the study materials here- http://shomusbiology.com/bio-materials.html Remember Shomu’s Biology is created to spread the knowledge of life science and biology by sharing all this free biology lectures video and animation presented by Suman Bhattacharjee in YouTube. All these tutorials are brought to you for free. Please subscribe to our channel so that we can grow together. You can check for any of the following services from Shomu’s Biology- Buy Shomu’s Biology lecture DVD set- www.shomusbiology.com/dvd-store Shomu’s Biology assignment services – www.shomusbiology.com/assignment -help Join Online coaching for CSIR NET exam – www.shomusbiology.com/net-coaching We are social. Find us on different sites here- Our Website – www.shomusbiology.com Facebook page- https://www.facebook.com/ShomusBiology/ Twitter - https://twitter.com/shomusbiology SlideShare- www.slideshare.net/shomusbiology Google plus- https://plus.google.com/113648584982732129198 LinkedIn - https://www.linkedin.com/in/suman-bhattacharjee-2a051661 Youtube- https://www.youtube.com/user/TheFunsuman Thank you for watching the lecture video on cardiac output and stroke volume.
Views: 13482 Shomu's Biology
Biology help: Frank-Starling Mechanism - Stroke Volume, Preload, End Diastolic Volume
 
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Check out the following links below! Over 1000+ Medical Questions: http://www.5minuteschool.com DONATE + SUPPORT US: http://paypal.me/5minuteschool Patreon: https://goo.gl/w841fz Follow us on Twitter: http://twitter.com/5MinuteSchool Follow us on Instagram: http://instagram.com/5minuteschool My personal Instagram: http://instagram.com/shahzaebb Contact us: [email protected] ______ ◅ Donate: http://www.5minuteschool.com/donate ◅ Website: htttp://www.5minuteschool.com ◅ Twitter: http://www.twitter.com/5minuteschool ◅ Facebook: http://www.facebook.com/5minuteschool ◅ Email: [email protected] This video looks into the Frank-Starling law and mechanism and how it affects stroke volume and cardiomyocytes.
Views: 140555 5MinuteSchool
Regulation of blood pressure with baroreceptors | NCLEX-RN | Khan Academy
 
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Learn about how the arteries use nerve impulses to help regulate blood pressure. Rishi is a pediatric infectious disease physician and works at Khan Academy. Created by Rishi Desai. Watch the next lesson: https://www.khanacademy.org/test-prep/nclex-rn/nclex-rn-circulatory-system/rn-blood-pressure-control/v/parts-of-a-nephron?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn Missed the previous lesson? https://www.khanacademy.org/test-prep/nclex-rn/nclex-rn-circulatory-system/blood-pressure/v/blood-pressure-changes-over-time?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn NCLEX-RN on Khan Academy: A collection of questions from content covered on the NCLEX-RN. These questions are available under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License (available at http://creativecommons.org/licenses/by-nc-sa/3.0/us/). About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s NCLEX-RN channel: https://www.youtube.com/channel/UCDx5cTeADCvKWgF9x_Qjz3g?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 488125 khanacademymedicine
Biology Help: Venous Return, Venous Pressure, Compliance
 
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Check out the following links below! Over 1000+ Medical Questions: http://www.5minuteschool.com DONATE + SUPPORT US: http://paypal.me/5minuteschool Patreon: https://goo.gl/w841fz Follow us on Twitter: http://twitter.com/5MinuteSchool Follow us on Instagram: http://instagram.com/5minuteschool My personal Instagram: http://instagram.com/shahzaebb Contact us: [email protected] ______ ◅ Donate: http://www.5minuteschool.com/donate ◅ Website: htttp://www.5minuteschool.com ◅ Twitter: http://www.twitter.com/5minuteschool ◅ Facebook: http://www.facebook.com/5minuteschool ◅ Email: [email protected] This video look at Venous return and how it's responsible in affecting End Diastolic Volume, Stroke Volume and Cardiac Output. We also look at Venous pressure, Compliance and some factors affecting venous return
Views: 58155 5MinuteSchool
Regulation of Cardiac Rate - HCN Channels, Exercise, Chronotropic Effect
 
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Check out the following links below! Over 1000+ Medical Questions: http://www.5minuteschool.com DONATE + SUPPORT US: http://paypal.me/5minuteschool Patreon: https://goo.gl/w841fz Follow us on Twitter: http://twitter.com/5MinuteSchool Follow us on Instagram: http://instagram.com/5minuteschool My personal Instagram: http://instagram.com/shahzaebb Contact us: [email protected] ______ ◅ Donate: http://www.5minuteschool.com/donate ◅ Website: htttp://www.5minuteschool.com ◅ Twitter: http://www.twitter.com/5minuteschool ◅ Facebook: http://www.facebook.com/5minuteschool ◅ Email: [email protected] This video looks into the regulation of cardiac rate, from the view point of the automatic contractibility of myocardial cells, to the effects of mediators such as epinephrine. We also look at HCN channels, the effect of exercise in terms of decreased parasympathetic innervation to sino-atrial node from vagus nerve and more. If you have any questions, write them below :)
Views: 5509 5MinuteSchool
Cardiovascular System Physiology - Cardiac Output (stroke volume, heart rate, preload and afterload)
 
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Where do I get my information from: http://armandoh.org/resource Facebook: https://www.facebook.com/ArmandoHasudungan Support me: http://www.patreon.com/armando Instagram: http://instagram.com/armandohasudungan Twitter: https://twitter.com/Armando71021105 SPECIAL THANKS: Patreon members FaberCastell Australia - https://www.youtube.com/user/FaberCastellGroup What markers do I use? FaberCastellPITTartistpens1,5 FaberCastellPITTartistpensF FaberCastellPermanentmarkers FaberCastellPITTartistpensbrush
Views: 21182 Armando Hasudungan
Cardiac output made easy medical study
 
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This video of medical study is regarding cardiac output, stroke volume, ejection fraction and factors affecting Cardiac output.
Views: 6961 Medical study
Cardiac Output
 
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Anatomy & Physiology Microbiology Health Science Core with Dr. Samia Williams Santa Fe College Professor.
Views: 15846 SF Media Studio
Autonomic nervous system effects on the heart | NCLEX-RN | Khan Academy
 
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Carefully go through each of the four major effects that the sympathetic and parasympathetic system has on your heart: Chronotropy, Dromotropy, Inotropy, and Lusitropy. Rishi is a pediatric infectious disease physician and works at Khan Academy. Created by Rishi Desai. Watch the next lesson: https://www.khanacademy.org/test-prep/nclex-rn/nclex-rn-circulatory-system/nerve-regulation-of-the-heart-ddp/v/getting-a-new-heart?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn Missed the previous lesson? https://www.khanacademy.org/test-prep/nclex-rn/nclex-rn-circulatory-system/nerve-regulation-of-the-heart-ddp/v/increasing-ventricular-contractility-inotropic-effect?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn NCLEX-RN on Khan Academy: A collection of questions from content covered on the NCLEX-RN. These questions are available under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License (available at http://creativecommons.org/licenses/by-nc-sa/3.0/us/). About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s NCLEX-RN channel: https://www.youtube.com/channel/UCDx5cTeADCvKWgF9x_Qjz3g?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 143626 khanacademymedicine
Physiology 707/CVS_13 (Cardiac output Regulation)/Medical
 
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دة تاني فيديو في موضوع الCardiac output الأول أهو https://www.youtube.com/watch?v=t9JesGJTnco&t=135s Topics explained in this video: 1- Heterometric Regulation (From 1:01 to 16:09) 2- Homeometric Regulation (From 16:10 to 20:50) 3- Extrinsic Regulation (From 20:51 to 32:05) 4- Integration between Intrinsic and Extrinsic mechanisms (From 32:05 to 39:53) Contact me on Telegram: https://t.me/Mahmoud_Ahmed707
cardiovascular system: cardiac output
 
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cardiovascular system: cardiac output Cardiac output is the amount of blood pumped out by each ventricle in one minute. Cardiac outpu can increase markedly to meet the demands we put on our body, whether dashing to catch a bus or riding a mountain bike The other video about Cardiovascular system Cardiovascular System Autoregulation and Capilary Dynamics http://www.youtube.com/watch?v=Rmq3ZsHf7s0 Cardiovascular System: Blood Pressure Regulation http://www.youtube.com/watch?v=P_fHYZNLzQc cardiovascular system factor that affect blood pressure http://www.youtube.com/watch?v=-o9ofZ2KV4s cardiovascular system: measuring blood pressure http://www.youtube.com/watch?v=FZtczns02S4 cardiovascular system anatomy review blood vessel strutrue and function http://www.youtube.com/watch?v=0vHBEpvnFkM Cardiovascular System: Cardiac Cycle http://www.youtube.com/watch?v=PT_84-VnZGQ cardiovascular system Intrinsic Conduction System http://www.youtube.com/watch?v=qGYozyghRLY cardiovascular system cardiac action potential http://www.youtube.com/watch?v=zMUHfru7NUM Cardiovascular System: Anatomy Review The Heart http://www.youtube.com/watch?v=cvQihF6Id2o Pearson Education, Inc., publishing as Benjamin Cummings Translated titles: Herz-Kreislauf-System: Herzzeitvolumen कार्डियोवैस्कुलर सिस्टम: कार्डियक आउटपुट Kardiovaskulêre stelsel: kardiale uitset Cardiovascular system: cardiac output 심혈 관계 : 심 박출량 Sistema cardiovascular: gasto cardíaco نظام القلب والأوعية الدموية: النتاج القلبي কার্ডিওভাসকুলার সিস্টেম: কার্ডিয়াক আউটপুট हृदय रोगीय प्रणाली: हृदय उत्पादन سایہ کار نظام: کارڈی پیداوار
Views: 17496 Human Physiology
Cardiovascular Physiology :Factors affecting Cardiac output (Heart rate , Stroke volume, Preload)
 
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This video contains information and explanation of the cardiac output is regulated and controlled. It contains neural and hormonal control of the heart. starling law, preload, after load. www.royalchristcollege.co.uk cardiac output and stroke volume, cardiac output khan academy, cardiac output stroke volume and heart rate, cardiac output physiology, cardiac output animation, cardiac output and blood pressure, cardiac output and venous return, control of cardiac output, cardiology - cardiac output, factors affecting cardiac output, cardiac output lecture, regulation of cardiac output, physiology of cardiac output, blood pressure cardiac output, cardiac output regulation, cardiac output stroke volume preload and afterload part 1, cardiac output stroke volume, cardiac output usmle, understanding cardiac output, stroke volume cardiac output
Views: 10656 Royal Christ College
Baroreflex Regulation of Blood Pressure, Animation.
 
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How heart rate is controlled by the parasympathetic and sympathetic divisions of the autonomic nervous system, with overview of baroreceptor resetting. This video (updated with real voice) and other related images/videos (in HD) are available for instant download licensing here : https://www.alilamedicalmedia.com/-/galleries/images-videos-by-medical-specialties/neurology ©Alila Medical Media. All rights reserved. Support us on Patreon and get FREE downloads and other great rewards: patreon.com/AlilaMedicalMedia Baroreflex, or baroreceptor reflex, is one of the mechanisms the body uses to maintain stable blood pressure levels or homeostasis. Baroreflex is a rapid negative feedback loop in which an elevated blood pressure causes heart rate and blood pressure to decrease. Reversely, a decrease in blood pressure leads to an increased heart rate, returning blood pressure to normal levels. The reflex starts with specialized neurons called baroreceptors. These are stretch receptors located in the wall of the aortic arch and carotid sinus. Increased blood pressure stretches the wall of the aorta and carotid arteries causing baroreceptors to fire action potentials at a higher than normal rate. These increased activities are sent via the vagus and glossopharyngeal nerves to the nucleus of the tractus solitarius – the NTS - in the brainstem. In response to increased baroreceptor impulses, the NTS activates the parasympathetic system – the PSNS - and inhibits the sympathetic system – the SNS. As the PSNS and SNS have opposing effects on blood pressures, PSNS activation and SNS inhibition work together in the same direction to maximize blood pressure reduction. Parasympathetic stimulation decreases heart rate by releasing acetylcholine which acts on the pacemaker cells of the SA node. Inhibition of the sympathetic division decreases heart rate, stroke volume and at the same time causes vasodilation of blood vessels. Together, these events rapidly bring DOWN blood pressure levels back to normal. When a person has a sudden drop in blood pressure, for example when standing up, the decreased blood pressure is sensed by baroreceptors as a decrease in tension. Baroreceptors fire at a lower than normal rate and the information is again transmitted to the NTS. The NTS reacts by inhibiting parasympathetic and activating sympathetic activities. The sympathetic system releases norepinephrine which acts on the SA node to increase heart rate; on cardiac myocytes to increase stroke volume and on smooth muscle cells of blood vessels to cause vasoconstriction. Together, these events rapidly bring UP blood pressure levels back to normal. Baroreflex is a short-term response to sudden changes of blood pressure resulted from everyday activities and emotional states. If hypertension or hypotension persists for a long period of time, the baroreceptors will reset to the “new normal” levels. In hypertensive patients for example, baroreflex mechanism is adjusted to a higher “normal” pressure and therefore MAINTAINS hypertension rather than suppresses it. All images/videos by Alila Medical Media are for information purposes ONLY and are NOT intended to replace professional medical advice, diagnosis or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.
Views: 148490 Alila Medical Media
CVS - Regulation of heart rate | physiology lecture
 
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Video includes - motor nerves - sensory nerves - vasomotor centre - baroreceptors - chemoreceptors
Views: 6727 MEDICO GURU
SV, Preload, Afterload, Venous Return, EDV & ESV.
 
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Stroke Vol, Preload, Afterload, Venous Return, End Diastolic Vol, End Systolic Vol. Made easy
Views: 93917 Med Bug
Cardiac Output 2 : Regulation ( Cardiovascular / Physiology / Medicine / NEET PG )
 
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Part 2 of the Cardiac output video series where we will look at regulation of cardiac output and various condition like sleep and food and how they affect the outcome. ----------------------------------------------------------------------------------------------------------- Subscribe for more content on Study tips , Concepts , MCQs . :D Comment on what you would want to see next Email : [email protected] Facebook NEET PG Study / Preparation group : https://www.facebook.com/groups/238027616934102/ |Add me on Facebook at : https://www.facebook.com/right.pg.71 Follow me on Instagram : https://www.instagram.com/dr__right/ Subscribe to channel at https://www.youtube.com/channel/UC7M1Q3-TBnB8zBFvqmL_d8w Thanks for watching!!! EDUCATION DISCLAIMER While the channel and its associated personnel take great care to sceen and make every attempt to review the contents, Dr. Right's PG (DRP) MAKES NO WARRANTY , EXPRESSED OR IMPLIED, as to the accuracy of the content contained in the educational materials, in this video or on this website. The reader of these materials uses these materials at his or her own risk and DRP shall not be responsible for any errors, omissions,or inaccuracies in these materials, whether arising through negligence, oversight, or otherwise. RELIANCE ON ANY INFORMATION APPEARING ON THIS SITE IS STRICTLY AT YOUR OWN RISK The information and educational material contained herein is meant to promote the general understanding of the topics. Such information is not meant or intented to serve as a substitute for healthcare professional's clinical training, experience, or judgement. For patients and individuals, such information is not to be a substitute for professional medical, therapeutic, or healthcare advice or counseling. For medical issues or concerns, including decisions about medication and other treatments, readers should always consult their physician or , in serious cases, seek immediate assistance from emergency personnel. SELF MEDICATION IS HAZARDOUS. DRP MAKES NO WARRANTY THAT THE INFORMATION CONTAINED HEREIN WILL BE ERROR FREE, AND THE READERS OF SUCH INFORMATION USE SUCH AT THEIR OWN RISK
Views: 39 Dr. RIGHT'S PG
The Physiology of Cardiac Output
 
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This video will discuss one of the key components of cardiovascular physiology - cardiac output.
Views: 182694 virtualmedstudent
Frank Starling Mechanism
 
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Frank-Starling Mechanism (Length-Tension Relation) and Force-Tension curve (Afterload)
Views: 158803 ECGtoCardiology
Venous return cardiac output curves
 
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This presents the origin of these curves and explains the basics of the venous return and cardiac output interaction
Views: 32616 Kurtis Cornish
Mean Arterial Pressure Control
 
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Mean Arterial Pressure Control 2 mechanisms exist to monitor and regulate changes in MAP (mean arterial pressure): 1) Baroreceptor reflex—more important for short-term control of blood pressure - Arterial baroreceptors in the carotid sinus sense and respond to acute increases or decreases in arterial pressures - Arterial baroreceptors in the aortic arch respond to acute increases, but not decreases in arterial pressure. 2) RAA (renin angiotensin aldosterone) system—more important for long-term control of blood pressure. For example, how would the body respond to an acute hypotensive episode? 1) Baroreceptor reflex responds within seconds: Acute ↓ in MAP →↓ afferent signals sent from the carotid sinus baroreceptors via glossopharyngeal nerve (CN IX) to the brain stem medulla →↓ in parasympathetic activity via the efferent vagus nerve to the heart, with a simultaneous ↑ in sympathetic outflow from the nucleus of the solitary tract to the heart and vasculature → - ↑ Heart rate (chronotropic effect) - ↑Myocardial contractility (inotropic effect) ∴↑ stroke volume - ↑ AV conduction velocity (dromotropic effect) - ↑ TPR (total peripheral resistance) ∴compensatory↑ of mean arterial pressure toward normal Recall: MAP = CO*TPR, and CO = HR * SV CO=cardiac output, HR=heart rate, SV=stroke volume 2) RAA (renin angiotensin aldosterone) system senses the the acute drop in blood pressure but takes minutes-hours-days to kick into gear: ↓ MAP →↓ renal blood flow is sensed by the juxtaglomerular apparatus →↑ renin →↑ angiotensin II → - Angiotensin II is a potent vasoconstrictor that increases total peripheral resistance. - Angiotensin II also stimulates release of aldosterone → stimulates renal sodium retention and subsequent renal fluid reabsorption to help maintain total blood volume in an attempt to preserve stroke volume, cardiac output, and mean arterial pressure.
Regulation of blood pressure and cardiac output
 
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Subject:Biophysics Paper: Physiological biophysics
Views: 113 Vidya-mitra
Cardiac Output, Mean Arterial Pressure relationship and Brainstem Center Response
 
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Where do I get my information from: http://armandoh.org/resource Facebook: https://www.facebook.com/ArmandoHasudungan Support me: http://www.patreon.com/armando Instagram: http://instagram.com/armandohasudungan Twitter: https://twitter.com/Armando71021105 SPECIAL THANKS: Patreon members FaberCastell Australia - https://www.youtube.com/user/FaberCastellGroup What markers do I use? FaberCastellPITTartistpens1,5 FaberCastellPITTartistpensF FaberCastellPermanentmarkers FaberCastellPITTartistpensbrush
Views: 18670 Armando Hasudungan
Cardiac Output, Venous Return and their Regulation (Intro)
 
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In this lecture ´´Cardiac Output, Venous Return and their Regulation´´ is explained. Section one is about normal values for cardiac output. Initially, introduction of cardiac output is given which is followed by the explanation of cardiac index. In the last slide educator notify about the effect of age on cardiac output. Cardiac output is regulated throughout life almost directly in proportion to overall metabolic activity. Stream the COMPLETE lecture on sqadia.com https://www.sqadia.com/programs/cardiac-output-venous-return-and-their-regulation
Views: 93 sqadia.com
What is preload? | Circulatory system physiology | NCLEX-RN | Khan Academy
 
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Some say Preload = End-Diastolic Pressure, others say Preload = End-Diastolic Volume, so which one is it? Watch and find out! Rishi is a pediatric infectious disease physician and works at Khan Academy. Created by Rishi Desai. Watch the next lesson: https://www.khanacademy.org/test-prep/nclex-rn/nclex-rn-circulatory-system/preload-afterload/v/preload-and-pressure?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn Missed the previous lesson? https://www.khanacademy.org/test-prep/nclex-rn/nclex-rn-circulatory-system/preload-afterload/v/why-doesn-t-the-heart-rip?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn NCLEX-RN on Khan Academy: A collection of questions from content covered on the NCLEX-RN. These questions are available under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License (available at http://creativecommons.org/licenses/by-nc-sa/3.0/us/). About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s NCLEX-RN channel: https://www.youtube.com/channel/UCDx5cTeADCvKWgF9x_Qjz3g?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 403452 khanacademymedicine
Human Physiology - Cardiac Output and Factors Affecting Cardiac Output
 
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“Human Physiology” is a free online course on Janux that is open to anyone. Learn more at http://janux.ou.edu. Created by the University of Oklahoma, Janux is an interactive learning community that gives learners direct connections to courses, education resources, faculty, and each other. Janux courses are freely available or may be taken for college credit by enrolled OU students. Dr. Heather R. Ketchum is an Associate Professor of Biology. Video produced by NextThought (http://nextthought.com). Copyright © 2000-2014 The Board of Regents of the University of Oklahoma, All Rights Reserved.
Views: 8120 Janux
Cardiac Output Overview
 
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Created with Screen Recorder Movavi https://www.movavi.com/mac-video-recorder/?c=scm500
Views: 753 Aaron Mullally
USMLE Cardiovascular 5: Cardiac Output Physiology, Frank Starling Curve, and more!
 
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Welcome to LY Med, where I go over everything you need to know for the USMLE STEP 1, with new videos every day. Follow along with First Aid, or with my notes which can be found here: https://www.dropbox.com/sh/xisbr5u8reifaqk/AAAEWF-Ho2r0OJMooCYN_bG-a?dl=0 Let's transition from heart anatomy to some cardiology physiology for you! Your heart is a pump, and the amount of blood it pumps out is called the cardiac output. Your cardiac output changes and depends on heart rate and stroke volume. Now there are some factors in stroke volume, and these include preload, afterload and contractility (inotropy). Let's talk about how these factors are changed. Preload: depends on your fluid volume. Increase in volume and venous tone increases preload. Things that decrease volume, like in hemorrhage or dehydration reduces preload, as well as decreased venous tone. Afterload: this is the pressure or resistance that your heart has to pump against. Increases in afterload is seen in vasoconstriction and narrow lumen (atherosclerosis etc). Decreases in afterload is seen in vasodilators like vasodilators, or av shunts. Contractility: we said that sympathetic activity via B1 activity will increases calcium and contraction. Other things that increase contractility is exercise, digoxin, and increased preload via the Frank Starling Curve. Things that decrease contractility include parasympathetic activity, beta blockers (b-blockers), calcium channel blockers, and heart failure and cardiovascular disease. Let's just talk about the Frank-Starling Curve. When you increase preload and stretch the heart, you will contract harder. We will review the common way they depict this on a chart. Our last topic will be on the cardiac and vascular function curve. This is a combination of the Frank Starling graph as well as a graph for your venous return (preload). We will review how they like to test the graph and how the graph changes. Done!
Views: 5526 LY Med
Regulation of cardiac output (2-2014) by Dr Khaled A Abulfadle
 
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Educational video for medical students Visit my website: khafadle.ahlamontada.net نسألكم الدعاء
Views: 1279 Dr Khaled A Abulfadle
Definition of cardiac output (Q), stroke volume (SV) and heart rate (HR)- CV variables part 1
 
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This video gives a basic overview of cardiac output, stroke volume and heart rate. It also covers how they are all related. In video 2 of this series, the regulation of heart rate is explained. In video 3a, 3b and 3c the regulation of stroke volume is discussed. All images are used under a creative commons liscence and attributed on the bottom right hand corner.
Views: 50944 KINprof
cardiovascular system Intrinsic Conduction System
 
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The intrinsic conduction system sets the basics rhythm of the beating heart. It consist of autorhythmic cardiac cells that initiate and distribute impulse (action potentials) throughout the heart. The other video about Cardiovascular system Cardiovascular System Autoregulation and Capilary Dynamics http://www.youtube.com/watch?v=Rmq3ZsHf7s0 Cardiovascular System: Blood Pressure Regulation http://www.youtube.com/watch?v=P_fHYZNLzQc cardiovascular system factor that affect blood pressure http://www.youtube.com/watch?v=-o9ofZ2KV4s cardiovascular system: measuring blood pressure http://www.youtube.com/watch?v=FZtczns02S4 cardiovascular system anatomy review blood vessel strutrue and function http://www.youtube.com/watch?v=0vHBEpvnFkM cardiovascular system: cardiac output http://www.youtube.com/watch?v=5DCduYhSutA Cardiovascular System: Cardiac Cycle http://www.youtube.com/watch?v=PT_84-VnZGQ cardiovascular system cardiac action potential http://www.youtube.com/watch?v=zMUHfru7NUM Cardiovascular System: Anatomy Review The Heart http://www.youtube.com/watch?v=cvQihF6Id2o Pearson Education, Inc., publishing as Benjamin Cummings Translated titles: Intrinsisches Reizleitungssystem des kardiovaskulären Systems कार्डियोवैस्कुलर सिस्टम आंतरिक चालन प्रणाली Kardiovaskulêre stelsel intrinsieke geleidingstelsel Cardiovascular system intrinsic conduction system 심혈관 시스템 고유 전도 시스템 Sistema de conducción intrínseca del sistema cardiovascular نظام التوصيل القلبي الوعائي الداخلي কার্ডিওভাসকুলার সিস্টেম অভ্যন্তরীণ চালনা সিস্টেম हृदय रोग प्रणाली को आंतरिक प्रजनन प्रणाली گریووااسکل نظام اندرونی موثر کاری کا نظام
Views: 14638 Human Physiology
Cardiac Output, Stroke Volume, Preload and Afterload for Nursing
 
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This video is going to take you through a cardiac mashup covering cardiac output, stroke volume, pre-load & after-load! With over 13 years in the Medical and academic fields, RN Mike Linares understands the challenges and stress traditional nursing school lectures and curriculum bring students. That's why he has dedicated his life to creating short, simple & fun video lectures that help students deepen their understanding of nursing school topics. That's where https://simplenursing.com/free-trial-yt/ comes in. Simple Nursing is committed to helping you pass nursing school and achieve your goal of becoming a nurse! Trusted by over 50,000 nursing students, our team of trusted nursing personalities and medical professionals have created the most innovative programs, videos and study tools available. Join today and learn how our members are cutting their study time by 60% and increasing their test scores by 22% on ave. Go to: https://simplenursing.com/free-trial-yt/ to get started with your LIMITED 5-day FREE Trial Membership. Are you ready to get started? Go to: http://simplenursing.com/get-started/yt to learn about our different membership options and pricing. Studying for the NCLEX? Go to: https://simplenursing.com/nclex-yt to learn more about our robust NCLEX prep course that has helped over 25,000 students pass the exam. Want to connect with us on Social Media? - Subscribe to our Youtube channel: https://www.youtube.com/SimpleNursing - Follow us on Instagram: https://www.instagram.com/simplenursi... - Follow us on Twitter: https://twitter.com/SimpleNursing - Like us on Facebook: https://facebook.com/SimpleNursing Thanks for tuning in!
Views: 208460 Simple Nursing
049 What Stroke Volume is and How to Calculate it
 
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http://www.interactive-biology.com - Making Biology Fun In this video I talk about what stroke Volume is - the difference between end diastolic volume and end systolic volume. SV = EDV-ESV. Enjoy!
Views: 184702 Interactive Biology
Preload Afterload and Cardiac Output
 
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Introduction to Stroke Volume, Cardiac Output, Preload, Afterload and Ejection Fraction
Views: 10787 Pharmapedia
Preload and Afterload Nursing | Stroke Volume, Cardiac Output Explained
 
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Preload vs. afterload nursing review of stroke volume and cardiac output. What is cardiac preload and afterload? Cardiac preload is the amount the ventricle stretch at the end of diastole. Diastole is the filling or relaxation phase of the cardiac cycle. Preload is the amount of blood volume that fills that ventricle when the filling phase is over. Therefore, it is also called the end-diastolic volume (EDV). Cardiac afterload is the pressure the ventricles must work against to open the semilunar valves so blood can leave the ventricle and enter either the lungs or systemic circulation. Afterload is influenced by vascular resistance, which is either pulmonary (which affects the right ventricle) or systemic vascular resistance (which affects the left ventricle). Preload and afterload play an important role in affecting cardiac output because they influence stroke volume. Cardiac output is the amount of blood pumped by the heart per minute, and it's calculated by the heart rate times the stroke volume. Stroke volume is the amount of blood pumped by a ventricle per beat. The three factors that influence stroke volume are contractility, preload, and afterload. Quiz: https://www.registerednursern.com/preload-vs-afterload-heart-nursing-quiz/ Notes: https://www.registerednursern.com/preload-and-afterload-cardiac-nclex-review/ More Cardiac NCLEX Review: https://www.youtube.com/playlist?list=PLQrdx7rRsKfV8fuU05Yzw1fAcLbKUu4bB Nursing Gear: https://teespring.com/stores/registerednursern Facebook: https://www.facebook.com/RegisteredNurseRNs Instagram: https://www.instagram.com/registerednursern_com/ Twitter: https://twitter.com/NursesRN #preloadafterload #strokevolume #cardiacoutput #cardiacnursing Subscribe: http://www.youtube.com/subscription_center?add_user=registerednursern Nursing School Supplies: http://www.registerednursern.com/the-ultimate-list-of-nursing-medical-supplies-and-items-a-new-nurse-student-nurse-needs-to-buy/ Popular Playlists: NCLEX Reviews: https://www.youtube.com/playlist?list=PLQrdx7rRsKfWtwCDmLHyX2UeHofCIcgo0 Fluid & Electrolytes: https://www.youtube.com/playlist?list=PLQrdx7rRsKfWJSZ9pL8L3Q1dzdlxUzeKv Nursing Skills: https://www.youtube.com/playlist?list=PLQrdx7rRsKfUhd_qQYEbp0Eab3uUKhgKb Nursing School Study Tips: https://www.youtube.com/playlist?list=PLQrdx7rRsKfWBO40qeDmmaMwMHJEWc9Ms Nursing School Tips & Questions" https://www.youtube.com/playlist?list=PLQrdx7rRsKfVQok-t1X5ZMGgQr3IMBY9M Teaching Tutorials: https://www.youtube.com/playlist?list=PLQrdx7rRsKfUkW_DpJekN_Y0lFkVNFyVF Types of Nursing Specialties: https://www.youtube.com/playlist?list=PLQrdx7rRsKfW8dRD72gUFa5W7XdfoxArp Healthcare Salary Information: https://www.youtube.com/playlist?list=PLQrdx7rRsKfVN0vmEP59Tx2bIaB_3Qhdh New Nurse Tips: https://www.youtube.com/playlist?list=PLQrdx7rRsKfVTqH6LIoAD2zROuzX9GXZy Nursing Career Help: https://www.youtube.com/playlist?list=PLQrdx7rRsKfVXjptWyvj2sx1k1587B_pj EKG Teaching Tutorials: https://www.youtube.com/playlist?list=PLQrdx7rRsKfU-A9UTclI0tOYrNJ1N5SNt Dosage & Calculations for Nurses: https://www.youtube.com/playlist?list=PLQrdx7rRsKfUYdl0TZQ0Tc2-hLlXlHNXq Diabetes Health Managment: https://www.youtube.com/playlist?list=PLQrdx7rRsKfXtEx17D7zC1efmWIX-iIs9
Views: 27404 RegisteredNurseRN
Blood Pressure Regulation (Lecture)
 
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http://www.interactive-biology.com - How is Blood pressure regulated? How do cardiac output and peripheral resistance fit into the equation? What are the negative effects of hypertension (high blood pressure). I explore these concepts and more in this video
Views: 36482 Interactive Biology
Regulation of Heart
 
23:06
Aakash Institute video
Views: 8116 AR Group
Heart Rate Response to Exercise
 
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AQA AS PE
Views: 13200 James Morris

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