2021
DOI: 10.1093/icvts/ivab269
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Regional wall stress differences on tricuspid aortic valve-associated ascending aortic aneurysms

Abstract: OBJECTIVES Ascending thoracic aortic aneurysms (aTAAs) carry a risk of acute type A dissection. Elective repair guidelines are based on diameter, but complications often occur below diameter threshold. Biomechanically, dissection can occur when wall stress exceeds wall strength. Aneurysm wall stresses may better capture dissection risk. Our aim was to investigate patient-specific aTAA wall stresses associated with a tricuspid aortic valve (TAV) by anatomic region. … Show more

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“…Notwithstanding concerns with aortic diameter as a reliable metric of risk for acute aortic syndromes [17][18][19], this easily measured quantity yet continues to play a critical role in clinical decisions [20]. Because the aorta dissects or ruptures only when the mechanical stress exceeds the strength of the wall, many authorities also continue to suggest a similar need to calculate and compare values of wall stress [21][22][23]. For reasons noted above, however, there has been considerable variation in the measurement of aortic root diameter and no truly reliable method to estimate wall stress.…”
Section: Discussionmentioning
confidence: 99%
“…Notwithstanding concerns with aortic diameter as a reliable metric of risk for acute aortic syndromes [17][18][19], this easily measured quantity yet continues to play a critical role in clinical decisions [20]. Because the aorta dissects or ruptures only when the mechanical stress exceeds the strength of the wall, many authorities also continue to suggest a similar need to calculate and compare values of wall stress [21][22][23]. For reasons noted above, however, there has been considerable variation in the measurement of aortic root diameter and no truly reliable method to estimate wall stress.…”
Section: Discussionmentioning
confidence: 99%