Biomechanical Properties of Human Dilated Ascending Aorta

Biomechanical analysis of wrapping of the moderately dilated ascending aorta

BACKGROUND External wrapping is a surgical method performed to prevent the dilatation of the aorta and to decrease the risk of its dissection and rupture. However, it is also believed to cause degeneration of the aortic wall. A biomechanical analysis was thus performed to assess the stress of the aortic wall subjected to external wrapping. METHODS A stress analysis using the finite elements m...

Three-dimensional Finite Element Modeling of Dilated Human Ascending Aorta

A dilated ascending aorta or aortic root is susceptible to fatal aortic dissection or rupture. This risk may be attributed to increased circumferential stresses due to an increase in aortic lumen diameter. However, the effect of complex geometry on wall stresses in the dilated ascending aorta is not well understood. In this study, we combined pre-operative MRI data and measured mechanical prope...

Dilated ascending aorta: is reductive ascending aortoplasty really forgotten?

Single center experience with wrapping of the dilated ascending aorta

BACKGROUND External wrapping is a surgical technique performed in patients with a dilated ascending aorta. The aim of this study is to present the mid-term results of wrapping of the dilated ascending aorta. METHODS 34 patients (mean age: 64.4 ± 10.8 years, 21 males) with a dilated ascending aorta were operated on at a single cardiac surgery center using a wrapping technique. The aortas were ...

Surgical treatment of the dilated ascending aorta: when and how?

BACKGROUND The aorta is considered pathologically dilated if the diameters of the ascending aorta and the aortic root exceed the norms for a given age and body size. A 50% increase over the normal diameter is considered aneurysmal dilatation. Such dilatation of the ascending aorta frequently leads to significant aortic valvular insufficiency, even in the presence of an otherwise normal valve. T...