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Fracture properties of porcine versus human thoracic aortas from tricuspid/bicuspid aortic valve patients via symmetry-constraint Compact Tension testing.
Sci Rep
January 2025
Department of Engineering Mechanics, KTH Royal Institute of Technology, Stockholm, Sweden.
Aneurysm rupture is a life-threatening event, yet its underlying mechanisms remain largely unclear. This study investigated the fracture properties of the thoracic aneurysmatic aorta (TAA) using the symmetry-constraint Compact Tension (symconCT) test and compared results to native and enzymatic-treated porcine aortas' tests. With age, the aortic stiffness increased, and tissues ruptured at lower fracture energy [Formula: see text].
View Article and Find Full Text PDFType A Aortic Dissection in a Previously Healthy Pregnant Patient: A Challenging Dilemma, Case Report, and Literature Review.
Case Rep Cardiol
December 2024
Internal Medicine Department, Isfahan University of Medical Sciences, Isfahan, Iran.
Aortic dissection (AoD) is a rare fatal condition in which tearing in the intima causes a false channel in the aorta and can lead to rupture. AoD is classified as the DeBakey classification (Types I, II, III) and Stanford classification (Types A and B). Women with underlying risk factors such as hypertension, smoking, bicuspid aortic valve, and connective tissue disorders are at risk for pregnancy-related AoD.
View Article and Find Full Text PDFAortitis Increases the Risk of Surgical Complications and Re-Operations After Major Aortic Surgery.
J Cardiovasc Dev Dis
December 2024
Department of Cardiac Surgery, Oxford University Hospitals NHS Foundation Trust, Oxford OX3 9DU, UK.
Aortitis, defined as inflammation of the aorta, can lead to aneurysms and dissections. Intra-operative sampling is essential for diagnosis, with many cases presenting asymptomatically as clinically isolated aortitis. Previous studies investigating aortitis in major aortic surgery have been limited by low intra-operative sampling.
View Article and Find Full Text PDFAortic valve replacement in a bicuspid aortic valve patient followed by reoperation for ascending aorta rupture: a case report.
Front Cardiovasc Med
December 2024
Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Bicuspid aortic valve (BAV), the most common congenital cardiac anomaly, predisposes individuals to aortic stenosis and regurgitation due to valve degeneration. Abnormal hemodynamics, arterial wall characteristics, and genetic factors contribute to ascending aorta dilatation, potentially leading to severe complications like aortic dissection. Presently, the most recent guidelines propose that individuals with BAV requiring valve replacement due to valve dysfunction should undergo simultaneous replacement of the ascending aorta when the diameter of aortic dilatation exceeds 4.
View Article and Find Full Text PDFRegion-specific biomechanical characterization of ascending thoracic aortic aneurysm of hypertensive patients with bicuspid aortic valves.
Biomech Model Mechanobiol
December 2024
Institute for Biomedical Engineering and Nano Science, Shanghai East Hospital, Tongji University School of Medicine, 500 Zhennan Road, Shanghai, 200331, People's Republic of China.
Hypertension and bicuspid aortic valve (BAV) are key clinical factors that may affect local biomechanical properties of ascending thoracic aortic aneurysms (ATAAs). This study sought to investigate regional differences in biaxial mechanical properties of the ATAAs for the hypertensive patients with BAV. Fresh ATAA samples were harvested from 16 hypertensive patients (age, 66 ± 9 years) undergoing elective aortic surgery.
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