title: Less-invasive treatments make aortic valve stenosis surgery more available.  An aging population means a greater need for aortic valve replacements.
mesh_terms: D000367:Age Factors; D001021:Aortic Valve / Q000473:pathology / Q000601:surgery*; D001024:Aortic Valve Stenosis / Q000175:diagnosis / Q000473:pathology / Q000601:surgery* / Q000628:therapy; D006328:Cardiac Catheterization; D019918:Heart Valve Prosthesis Implantation / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D012307:Risk Factors; D056346:Sternotomy / Q000295:instrumentation / Q000379:methods