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When aortic valve replacement is performed in patients with a small aortic annulus, prosthesis-patient mismatch (PPM) is of concern because it can affect postoperative clinical outcomes. Although larger bioprosthetic valves have been well studied, the hemodynamics of 19-mm bioprostheses have been reported in only a small number of patients. The effectiveness as well as the impact of PPM on outcomes are thus still unclear.

circulation journal

Clinical Outcomes and Hemodynamics of the 19-mm Perimount Magna Bioprosthesis in an Aortic Position - Comparison With the 19-mm Medtronic Mosaic Ultra Valve -