Changes in wall shear stress magnitude after aneurysm rupture.

Acta neurochirurgica · Aug 2013

Case Reports

Changes in wall shear stress magnitude after aneurysm rupture.

Computational fluid dynamics (CFD) studies on cerebral aneurysms have attempted to identify surrogate hemodynamic parameters to predict rupture risk. We present a case of bilateral mirror image aneurysms, one of which ruptured soon after imaging. ⋯ Findings from our case suggest that CFD studies comparing unruptured and ruptured aneurysms may not yield valid estimation on aneurysm rupture risk because of changes in aneurysm shape after rupture. Changes in aneurysm shape after rupture should be considered in CFD research.

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- Kenichi Kono, Nagatsuki Tomura, Ryo Yoshimura, and Tomoaki Terada.
- Department of Neurosurgery, Wakayama Rosai Hospital, 93-1 Kinomoto, Wakayama 640-8505, Japan. vyr01450@gmail.com
- Acta Neurochir (Wien). 2013 Aug 1;155(8):1559-63.
AbstractComputational fluid dynamics (CFD) studies on cerebral aneurysms have attempted to identify surrogate hemodynamic parameters to predict rupture risk. We present a case of bilateral mirror image aneurysms, one of which ruptured soon after imaging. Wall shear stress values of the ruptured aneurysm changed by 20-30% after rupture because of change in the aneurysm shape. Findings from our case suggest that CFD studies comparing unruptured and ruptured aneurysms may not yield valid estimation on aneurysm rupture risk because of changes in aneurysm shape after rupture. Changes in aneurysm shape after rupture should be considered in CFD research.

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Changes in wall shear stress magnitude after aneurysm rupture.

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