# Fluid Mechanics in Medicine

## Video Lectures

Displaying all 12 video lectures.
 Lecture 1 Play Video Density and Specific GravityAn overview of the meaning of density and specific gravity, along with their calculations and some example problems. The relevance of specific gravity in analyzing urine is also discussed. Lecture 2 Play Video Archimedes' Principle and BuoyancyA review of Archimedes' Principle and the buoyant force, including 2 worked examples, and a brief description of how the principle of neutral buoyancy applies to the brain and cerebrospinal fluid. Lecture 3 Play Video Hydrostatic PressureA description of hydrostatic pressure, along with the equation to calculate it, and an example. Lecture 4 Play Video Hydrostatic Pressure: Medical ApplicationsA review of some of the uses of pressure measurements in medicine, with a focus on measuring the jugular venous pressure and bladder pressure. Lecture 5 Play Video Pascal's LawA video reviewing Pascal's Law, including several classic examples including simple hydraulics. Lecture 6 Play Video The Continuity EquationA simplified derivation and explanation of the continuity equation, along with 2 examples. Lecture 7 Play Video The Bernoulli EquationA brief description of the Bernoulli equation and Bernoulli's principle, with 2 examples, including one demonstrating the Venturi effect. Lecture 8 Play Video The Bernoulli Equation: Medical ApplicationsAn overview of several medical applications of the Bernoulli Equation, including a description of the Venturi mask, and how echocardiography is used to estimate pulmonary artery pressure. Lecture 9 Play Video Ohm's Law and HemodynamicsA description of how to apply Ohm's Law from E&M to understand hemodynamics, specifically the relationship between blood pressure, cardiac output, and systemic vascular resistance. I also briefly cover the different forms of shock. Lecture 10 Play Video Viscosity and Poiseuille's LawA description of viscosity and Poiseuille's Law, which relates the pressure gradient along an enclosed conduit to the viscosity, length of conduit, radius of conduit, and fluid low. Several examples of its application in medicine are discussed, including rapid infusion of fluids, asthma attacks, hyperviscosity syndrome, and leukostasis. Lecture 11 Play Video Reynolds Numbers and TurbulenceA review of the meaning of turbulence, and calculation of the Reynolds number for fluid moving through a tube. Focus it given to the concept's relationship to the heart murmurs, as well as the theoretical benefits of breathing a helium/oxygen mixture called Heliox. Lecture 12 Play Video Surface Tension and SurfactantA discussion of surface tension, with emphasis on the role surfactant has in reducing surface tension within the lungs, and the consequence this has for respiratory mechanics.