The Journal of thoracic and cardiovascular surgery
-
J. Thorac. Cardiovasc. Surg. · Dec 2024
Comparative StudyLongitudinal Versus Circumferential Biomechanical Behavior of the Aneurysmal Ascending Aorta.
We evaluate the independent effects of patient and aortic tissue characteristics on biaxial physiologic mechanical metrics in aneurysmal and nonaneurysmal tissues, and uniaxial failure metrics in aneurysmal tissue, comparing longitudinal and circumferential behavior. ⋯ Age was the strongest predictor of mechanical behavior. After adjusting for age, nonaneurysmal tissue was less deformable than aneurysmal tissue. Differences in longitudinal and circumferential mechanics contribute to tissue dysfunction and failure in ascending aneurysms. This highlights the need to better understand the effects of age, ascending aortic length, and thickness on clinical aortic behavior.
-
J. Thorac. Cardiovasc. Surg. · Dec 2024
Multicenter StudyLong-Term Outcomes Following the Ross Procedure in Neonates and Infants: A Multi-Institutional Analysis.
For neonates and infants with aortic valve pathology, the Ross procedure historically has been associated with high rates of morbidity and mortality. Data regarding long-term durability are lacking. ⋯ Neonates and infants experience excellent postdischarge survival and long-term freedom from autograft reintervention and aortic regurgitation after the Ross. Neoaortic dilatation normalizes in this population in the long-term. Increased consideration should be given to Ross in neonates and infants with aortic valve disease.