Minimally Invasive Mitral Valve Replacement Using the Valve-in-valve Technique.

A 90-year-old woman with two previous mitral valve replacements, presented with pulmonary edema due to mitral regurgitation from degeneration of her bioprosthetic mitral valve. A minimally invasive approach was used to replace the bioprosthetic mitral valve. During surgery, the bioprosthetic valve was noted to be too adherent to the endocardium of the left atrium, making removal of the prosthesis not only difficult, but also potentially harmful. The new bioprosthetic valve was instead placed using a valve-in-valve approach.