Resultados preliminares en el análisis de elementos finitos de aneurismas de aorta abdominal en rango no quirúrgico

Abstract

IntroductionThe diagnosis and management of abdominal aortic aneurysms currently relies on the maximal aortic diameter, which grows in an unpredictable manner. The aim of this study was to compare the results of the biomechanical variables using finite elements analysis between the 2 groups of small aneurysms (group I 40-49mm, group II 50-54mm). MethodsA total of 23 patients with abdominal aortic aneurysm (group I N=14, group II N=9) who had undergone a thoraco-abdominal angio computed tomography in this hospital were prospectively identified. Abdominal aortic aneurysms diameter, peak wall rupture (PWR), PWR Index, Rupture Risk Equivalent Diameter (RRED) abdominal aortic aneurysms and thrombus volume were measured and calculated using finite element analysis software. The variability between maximum abdominal aortic aneurysms diameter and RRED was also determined. ResultsAn increased PWS, PWRR, and RRED, was observed in group II. Moreover, 5 (21.74%) patients had a positive variability (>0.5mm), and 2 of them (8.70%) had a PWRR >0.5, which is associated with a higher aneurysm rupture risk. ConclusionPWR and PWRR are elevated in group II, perhaps secondary to a larger abdominal aortic aneurysms diameter. Further studies are required before using this software in clinical decisions.