Biomechanics and clinical outcomes of various conduit configurations in valve sparing aortic root replacement

The goal was to preserve the native aortic valve (AV) leaflets in patients with aortic root aneurysm with or without aortic regurgitation (AR). The ex vivo system consists of a linear piston pump (ViVitro Superpump, ViVitro Labs, Victoria, BC, Canada) to generate a physiologic waveform in compliance with ISO 5840 standards. Similar to our previous ex vivo evaluation of the VSARR operation, we again confirmed that SG, compared with sinus containing graft, most closely recapitulated the native aortic root biomechanics.