title: Valve-in-vale implants delivered without open-heart surgery.  Research shows the catheter procedure is effective in replacing failing bioprosthetic valves.
mesh_terms: D001024:Aortic Valve Stenosis / Q000628:therapy*; D001705:Bioprosthesis; D006328:Cardiac Catheterization / Q000379:methods*; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000379:methods*; D006801:Humans; D016896:Treatment Outcome