Letter by Frydrychowicz and Markl Regarding Article, “Association Between Aneurysm Shoulder Stress and Abdominal Aortic Aneurysm Expansion: A Longitudinal Follow-Up Study”

Abstract

To the Editor: We read with great interest the article by Li et al,1 who present convincing data on the calculation of wall shear stress (WSS) in abdominal aneurysms based on computed tomography–derived vascular geometries and numeric simulations (computational fluid dynamics). They conclude that increased WSS at the aneurysm shoulder is associated with aneurysm expansion, which in turn, demographically, is associated with a higher risk of rupture. We believe that the authors have to be congratulated on these results, which point toward a more individualized patient-specific clinical management of aneurysms. Such modeled geometries …