Experimental Study of Anisotropic Stress/Strain Relationships of the Piglet Great Vessels and Relevance to Pediatric Congenital Heart Disease

The neonatal aorta and pulmonary artery exhibit hyperelastic biomechanical behavior with an anisotropic effect. Differences between aorta and pulmonary artery may play a role in native tissue behavior, ventricular and arterial mechanical coupling, and risk of deformation due to abnormal hemodynamics of congenital heard disease.