Hemodynamics

An overview of hemodynamics from a physiology perspective (i.e. the application of fluid dynamics to the cardiovascular system).
0:00 Introduction
1:42 Hydrostatic pressure and the JVP
8:31 Flow and the Continuity Equation
12:37 Resistance and Poiseuille's Law
21:23 "The Most Important Equation in Cardiovascular Physiology"
26:17 Summary
#cardiology #CVphysiology #physiology

[@StrongMed]

If anyone is here looking more for information specifically on shock and it's management, may I suggest these other videos from my channel: Shock playlist (5 videos covering the categories of shock, diagnosis, IV fluids, and pressors): kzbin.info/aero/PLYojB5NEEakXi2wW00LkbkcaESav1Quk9 An approach to shock (a more general overview of differentiating subtypes - part of my "Approach to Symptoms" series): kzbin.info/www/bejne/najNh6iGo5Wsmpo Sepsis and Septic Shock (part of my "Intern Crash Course" series): kzbin.info/www/bejne/aXa5oax4hLeqa7s

[@vocabularyempire8797]

Your follower from Egypt Your channel one of the best channels on KZbin You help us so much Thanks forever ❤️

[@nicolasvethencourt7238]

Awesome content Dr. One of the best medical yt channel out there

[@ImtiazAsim]

This video is the best explanation of the topic on KZbin.

[@user-wz6oo9bq5j]

In echocardiography, the equation flow=area*velocity is replaced by flow=area*velocity time integral (VTI) which considers the alteration of velocities through time so LV SV=A(LVOT)* VTI (LVOT) & SV*HR = CO.

[@Miguelgarcia214]

Well organized! It’s taking me a bit to get hemodynamics in the ICU. This videos really helped.

[@rockerodestructor]

Magnificent lecture!

[@oussamaakermi2431]

thank u .. from the heart..🥰

[@omartarek675]

you are the best thing on youtube

[@abdulazeez.98]

Excellent video as always

[@silbar10]

You are the best!

[@pamelamorris3148]

Looking for more on bioluminescent fungi, bacteria, molds that can infect the human body, skin, hair, eyes. If you have a video on this subject can you please point me in that direction? Thank you

[@fabioriccardoschibuola1241]

In Italy we use a trick to remember Ohm's Law: "Viva il Re d'Italia" (Long Life [Viva] to the King [il Re] of Italy [d'Italia]) = [V = R x I]! 😂 [P.S.: No, we don't have a king any more... but it's a fun way to learn this topic 🤓]

[@karamdabagh]

thank you so much for your work

[@sanbetski]

great videos, dr strong. can you upload videos on basic echo, what to look for, pay attention to, etc? thanks and more power to your channel!

[@StrongMed]

Thanks for the suggestion. For the most part, I try to keep my videos within my usual scope of practice and/or expertise. Unfortunately, anything more than the most basic of echo interpretation falls outside both. I can imagine collaborating with someone in the future on it, but that would be a long-range goal.

[@michelenichele294]

All I was asking was your name, rank, and serial number. 😂 Thank you!🙏👏🏻

[@salazarchristine9605]

Thank you so much ❤

[@dailydoseofmedicinee]

👏👏

[@Batette]

Question Sir: Flow (=cardiac output) ist critical and Resistance decreases Flow, right? Wo do I feel dizzy when I‘m on Ramipril which enhances Cardiac Output through arteriolar dilation? Or put another way: What do we need blood pressure for?

[@StrongMed]

First, regarding your ramipril, I can't offer specific, individualized medical advice here, and I recommend speaking directly with the clinician who described the medication about your dizziness. However, your second question is interesting - I'll rephrase it as "Why do we get symptomatic from low blood pressure?". After all, if vasodilation leads to decreased afterload for the heart, that increases cardiac output, which should improve the delivery of oxygen to peripheral tissues. Why is there a threshold vascular resistance below which this is a bad thing? It is surprisingly difficult to find a clear answer to this question. At least part of the explanation is that diffuse vasodilation, beyond a threshold degree, results in the resistance within vascular beds falling outside of the range in which they can be individually regulated, such that the body loses the ability to control where blood is directed. When this happens, blood (and oxygen) can no longer be preferentially shunted towards organs with relatively high oxygen need (e.g. the brain). If anyone knows of additional mechanisms at work here, please reply - I'd love to have a more complete understanding of this myself.

[@satyabrata4322]

@@StrongMed sir may be due to peripheral pooling of blood which leads to decrease preload

[@ronelcapito4197]

CT scan reading nxt pls