aortic wall tension
The circumferential force acting on the aortic wall per unit width of the vessel.
Full Definition
Aortic wall tension represents the mechanical force exerted circumferentially on the aortic wall, calculated according to Laplace's law as the product of transmural pressure and vessel radius. This biomechanical parameter is fundamental to understanding aortic pathophysiology, as increased wall tension contributes to aneurysm expansion and wall stress concentration. Wall tension increases proportionally with both intraluminal pressure and aortic diameter, explaining why larger aneurysms have higher rupture risk and why blood pressure control is crucial in aortic disease management.
Usage
Usage note: Related to Laplace's law; distinguish from shear stress which is tangential rather than circumferential force.
In Context
- "Biomechanical modeling demonstrated elevated aortic wall tension in the aneurysmal segment compared to normal aorta." — research manuscript
- "The patient's blood pressure optimization aimed to reduce aortic wall tension and slow aneurysm progression." — medical management plan