Prosthetic mitral valve

A prosthetic heart valve having an inflow end and an outflow end, comprising:

• a stent having a collapsed condition, an expanded condition, and a plurality of cells arranged in circumferential rows, the stent having an anterior side configured and arranged to be disposed adjacent an anterior native valve leaflet, and a posterior side configured and arranged to be disposed adjacent a posterior native valve leaflet;
• a valve assembly disposed within the stent and having a plurality of leaflets;
• and
• a flange disposed about the stent, the flange having a flared portion adjacent the inflow end of the prosthetic heart valve and a body portion extending from the flared portion toward the outflow end, the flange being asymmetric about a longitudinal axis such that a posterior side of the flange has a different shape than an anterior side of the flange,
• wherein the flared portion has a same shape on the anterior side of the flange and on the posterior side of the flange, and the body portion has a different shape on the anterior side of the flange than on the posterior side of the flange.