An introduction to biofluid mechanics--basic models and applications

Area of Science:

• Cardiovascular Biofluid Mechanics
• Hemodynamics and Atherosclerosis Research
• Medical Fluid Dynamics

Background:

• Cardiovascular disease is a leading cause of death, with complex hemodynamics significantly contributing to atherosclerosis and aging.
• Biofluid mechanics are integral to the cardiovascular system, necessitating an understanding of blood cell and whole blood movement, and their interaction with vessel walls.
• Fundamental fluid mechanics principles are essential for comprehending human cardiovascular circulatory system blood flow.

Discussion:

• Measurement techniques like Laser Doppler Anemometry (LDA), ultrasound, and MRI are vital for hemodynamic model studies.
• Changes in viscosity and flow behavior, including vortex creation and flow disturbances, can illustrate medication effects on blood flow.
• Hemodynamics, alongside vessel wall structure, geometry, and elasticity, influences aneurysm and varicose vein formation.

Key Insights:

• High velocity fluctuations signify flow disturbances that require avoidance.
• Healthcare professionals must grasp fluid dynamic factors like flow rate, pressure/velocity gradients, and shear stress.
• These mechanical factors drive the deposition of blood cells and lipids, initiating atherosclerosis, particularly at arterial bends and bifurcations.

Outlook:

• Experiments using elastic cardiovascular models with surgical interventions (stents, patches) provide insights into hemodynamic effects.
• Understanding these hemodynamic effects can enhance diagnostic accuracy and therapeutic strategies in cardiovascular medicine.
• Further research into biofluid mechanics and vessel wall interactions holds promise for improved cardiovascular healthcare.