title: Present status of cardiac valve replacement.
mesh_terms: D000328:Adult; D000818:Animals; D001021:Aortic Valve / Q000601:surgery; D002648:Child; D005260:Female; D006321:Heart / Q000502:physiology; D006349:Heart Valve Diseases / Q000601:surgery*; D006350:Heart Valve Prosthesis / Q000295:instrumentation / Q000379:methods / Q000401:mortality; D006801:Humans; D008297:Male; D008943:Mitral Valve / Q000601:surgery; D010477:Perfusion; D010969:Plastics; D011183:Postoperative Complications; D013552:Swine; D014183:Transplantation, Heterologous; D014261:Tricuspid Valve / Q000601:surgery
chemical_list: D010969:Plastics