Key result
The Finite Element Analysis Rupture Index (FEARI) significantly correlated with maximum aneurysm diameter (P=0.043) and volume (P=0.036), showing potential as an adjunct tool for rupture prediction.
Observational (n=10)
Yes
A novel Finite Element Analysis Rupture Index (FEARI) combining peak wall stress and regional tissue strength may provide a patient-specific adjunct to maximum diameter for predicting AAA rupture risk.
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May refine AAA rupture risk assessment beyond diameter; leaves open prospective validation before clinical adoption.
Currently, abdominal aortic aneurysms (AAAs), which are a permanent dilation of the aorta, are treated surgically when the maximum transverse diameter surpasses 5.5cm. AAA rupture occurs when the locally acting wall stress exceeds the locally acting wall strength. There is a need to review the current diameter-based criterion, and so it may be clinically useful to develop an additional tool to aid the surgical decision-making process. A Finite Element Analysis Rupture Index (FEARI) was developed.
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Doyle et al. (2009) conducted an observational in Abdominal Aortic Aneurysm (n=10). Finite Element Analysis Rupture Index (FEARI) vs. Maximum transverse diameter was evaluated on Correlation of FEARI with maximum AAA diameter (p=0.043). The Finite Element Analysis Rupture Index (FEARI) significantly correlated with maximum aneurysm diameter (P=0.043) and volume (P=0.036), showing potential as an adjunct tool for rupture prediction.
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