Biomechanical evaluation of ascending aortic aneurysms

Area of Science:

• Cardiovascular Research
• Biomedical Engineering
• Medical Physics

Background:

• Ascending aortic aneurysms (AAAs) research is recent, with growing interest in predicting dissection risk.
• Current studies often adapt methods from abdominal aortic aneurysm research.
• Existing biomechanical testing protocols are heterogeneous, leading to non-comparable and conflicting results.

Purpose of the Study:

• To comprehensively analyze experimental methodologies for determining AAA biomechanical properties.
• To facilitate better comparison and understanding of research findings in AAA biomechanics.
• To identify standardized protocols for evaluating AAA risk.

Main Methods:

• Review of existing literature on biomechanical testing of ascending aortic aneurysms.
• Analysis of commonly used methods including uniaxial/biaxial tensile tests, opening angle, bulge inflation, and inflation-extension tests.
• Evaluation of parameter and protocol heterogeneity across studies.

Main Results:

• Limited studies exist on AAA biomechanics, primarily using tensile tests.
• Significant heterogeneity in testing parameters and protocols is observed.
• Lack of standardized methods hinders result comparison and clinical application.

Conclusions:

• Standardization of experimental methodologies is essential for advancing AAA biomechanical research.
• Consistent protocols will enable more reliable prediction of dissection risk.
• Further research should focus on developing and validating standardized testing procedures.