Long-term results with a stentless porcine aortic valve: the Edwards PRIMA model 2500.

Background And Aim Of The Study: The study aim was to evaluate the very long-term patient survival, clinical and hemodynamic status after aortic valve replacement (AVR) with the Edwards PRIMA model 2500 stentless porcine aortic valve.

Methods: A cohort of 50 patients was prospectively followed between September 1991 and November 2006, with clinical evaluation and echocardiography. The mean patient age at implantation was 72.