title: Defining valve performance: importance and difficulties in testing heart valve replacement devices.
abstract: Defining and assessing the performance of heart valve replacement devices is difficult. This article is a brief discussion of the problems and present state of the art.
authors.affiliation: Department of Surgery, University of Virginia Health Sciences Center, Charlottesville 22908.
authors.forename: S P
authors.initials: SP
authors.lastname: Nolan
mesh_terms: D000818:Animals; D002417:Cattle; D004285:Dogs; D006350:Heart Valve Prosthesis / Q000009:adverse effects / Q000592:standards; D006439:Hemodynamics; D006801:Humans; D011474:Prosthesis Design; D013997:Time Factors