Age-related Aortic Dilatation
Progressive enlargement of the aortic root and ascending aorta that occurs as part of normal aging, requiring monitoring for potential complications.
Full Definition
Age-related aortic dilatation refers to the gradual enlargement of the aortic root and ascending aorta that occurs with advancing age due to changes in aortic wall structure and elasticity. This process involves loss of elastic fibers, increased collagen deposition, and smooth muscle cell changes that result in increased aortic stiffness and diameter. While mild dilatation is considered part of normal aging, progressive enlargement may predispose to aortic regurgitation, dissection, or rupture. In elderly patients, the distinction between physiologic aging changes and pathologic dilatation requiring intervention becomes crucial. Serial imaging is often recommended to monitor progression, and surgical intervention may be considered based on size criteria and patient-specific risk factors.
Usage
Usage note: Distinguish from pathologic aortic aneurysm; emphasize the progressive nature requiring monitoring.
In Context
- "Serial echocardiograms showed progressive age-related aortic dilatation requiring annual monitoring." — Follow-up imaging report
- "The distinction between physiologic age-related aortic dilatation and pathologic aneurysm formation was carefully evaluated." — Diagnostic assessment