Blood Pressure

Dr Mike explains the various factors that contribute to blood pressure.
These include; cardiac output (CO), heart rate (HR), stroke volume (SV), preload, afterload, contractility, and systemic vascular resistance (SVR).
Instagram: @drmiketodorovic
Twitter: @drmiketodorovic

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It was all about the moustache for me but I must say I have learnt something tonight. My brain is smiling 😊. Thank you Dr. Mike. You’re always a delight to watch.

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Thank you!! 🤗

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Love all the videos. Has really assisted my nursing studies.

[@danicalopez5265]

You’re the best Dr! I learned so much about A&P. You make everything easier to understand. Thank you! 🤗❤️

[@jiminshighnote]

Thank you so much for this lecture! I've always been confused regarding Preload/Afterload. You made everything so easy to understand. The illustration and writings also helped a lot with your explanation.

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Short, concise and precise Great stuff Thanks, Dr for making learning interesting

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Studying for Cardio/Resp Physiology exam, and this is a big lifesaver! Thank you so much for your videos :)

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[@michelandre4325]

A Great simplified explanation of many contributing variables underpinning blood pressure control. Well done. N.B. I like the moustache 👍

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Brilliant video as always thanks so much !

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Spoken and explained clearly in plain English without complex medical jargon: superb. Many thanks.🙏☀️🇬🇧👍🫀🙏

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This is excellent! Thank you Doctor!

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Thank you for simplifying this!!

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Thank you Dr. Mike

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Fantastic video!

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Well after trying to wrap my brain around a textbook chapter several times, it's finally clicked with your video haha THANK YOU.

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Amazing explanation

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Best explanation 👌

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I've just started learning about cardiovascular physiology and I immediately clicked when I saw the video. Good job guys!

[@DrMattDrMike]

Thank you! I hope it helps!! 😊

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Thank you so much!😍

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We will!

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[@justinhapner5605]

Dr. Mike, thank you again for another excellent lecture!! Critical Care Nurse here... two quick questions to better my understanding. First, I know some teachers who state the CO formula as (Heart Rate + Heart Rhythm) x SV.... what is your take on teaching it this way? Is this valid or overly complicated for the average understanding? I'm guessing the typical formula is assuming Sinus Rhythm, but perhaps this is incorrect? If arrhythmia is accounted for, would this typically be negatively affecting preload and/or contractility.... as in A-fib decreasing preload via dysynchrony of atrial contraction or SVT decreasing preload via reduction in diastolic filling time. Second, I'm trying to better differentiate "Afterload" from "SVR".... many seem to lump these together, but obviously this formula assumes they are distinct. I know that increased SVR increases afterload, but after that I'm a bit lost. Thanks for all you do and share!!

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Short, concise and precise. Understood everything. Thank you so much.

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I love this man 😔❤️🙏🏻

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[@meeromeer8812]

Thanks. But when the SVR decreases the CO will increase! Why the BP won’t increase? And can we say SVR is the same as afterload?

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Thank you sir

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[@hiddaiponce8855]

great video thank you Dr. I'm currently taking my A&P class this helped a lot! one question my grandmother takes medication but is not helping with lowering her blood pressure. Her dr has tried changing the medication & doses. Do you have any recommendations on another way of lowering blood pressure?

[@davidcooper177]

Presentation was crystal clear Dr. QUESTIONS: Q1: I can do an aerobic exercise at my maximum heart rate of 160 BPM for one hour. Resting heart rate is about 60 - 70 BPM. Q2:. My cholesterol was in 200 - 220 for about a year. Now it is down. My Linisopril is no longer working even at 30 m.g. Please give me an idea and the possibilities of why my BP is going in the Red Zone or High? Thanks

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Same look like W. F. Nietzsce become clear. Thank you Dr. Mike. your lecture perfect balance

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[@megavegan5791]

Afterload and vessel constriction seem to contradict themselves, in terms of their effect on BP. That is, wouldn’t a constricted blood vessel increase afterload? If so, how can increased afterload decrease BP? Could you please clarify?

[@DrMattDrMike]

Increased afterload will initially decrease stroke volume BUT the myocardium will overcome this by INCREASING contractility in order to overcome.

[@michelandre4325]

Increased arterial Vasoconstriction will result to an increased flow resistance or afterload consequently Stroke volume (blood flow volume) will be reduced. The same principle of Karcher pressure cleaner, when the resistance to the flow is high (vasoconstriction), the volume on the outlet (Stroke Volume) will be decreased but the pressure within is increased. The same anomaly of the water pressure cleaning - less water usage (Stroke volume down) but high pressure water flow (blood pressure up). Hope that’s help.

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What can we do to keep blood pressure low and heslthy

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First to comment 😀😀I’m hypertensive and have been on metoprolol and benicar

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Hey I'm 24 worh very high blood pressure (170/98 on average) and medication doesn't agree with me tried 4 times and each time I've ended up in hospital after 2 weeks of feeling ill and means I cannot function and get on with every day life. I've heard loosing weight will reduce my blood pressure (which seems to be difficult no matter how much of a calorie defect I'm in or how much exercise I do etc..) But what I want to know is. How does weight play a role in blood pressure? I'd assumed it was cholesterol if anything as this clogs arteries etc (my cholesterol is healthly range) but how does your weight play a part in blood pressure? could you please explain this in a simple terms as I'm trying to understand other options other than medication to lower my bp. Thanks x

[@princep.g.9404]

Reduce salt intake to very low and drink more water also. And also do exercises and eat healthy food which are non toxic to the body . With then try to reduce medications when you get healthier

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Silly q - so is constant caffeine consumption bad for the heart? like over a lifetime - am I making the heart work too hard with daily caffeine consumption?

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