Hemodynamic Evaluation and Midterm Outcome of Aortic Valve Replacement With Size 19 Perimount Prosthetic Valve

The 19-mm Perimount aortic prosthesis has acceptable hemodynamic performance. Transvalvular gradients were within a clinically acceptable range, both at rest and under stress. These findings suggest that patient-prosthesis mismatch is unlikely to cause a clinically important problem when the prosthesis is used, which is consistent with survival experience in the whole cohort.