Article Text

PDF

Relationship between the physical size, incompetence, and stenosis of prosthetic mitral valves
  1. J. T. M. Wright,
  2. L. J. Temple
  1. Bio-Engineering and Medical Physics Unit (Department of Surgery), University of Liverpool, Liverpool
  2. Cardio-thoracic Surgical Centre, Broadgreen Hospital, Liverpool

    Abstract

    One each of 17 commercially available prosthetic mitral valves has been subjected to in vitro testing using a pulse duplicator. Measurements of mean diastolic pressure difference, incompetence, dimensions, mechanical movements, and turbulence were made, and the quality of manufacture was examined. Although most valves would be effective in the treatment of incompetence, only those with large orifice diameters produced no significant stenosis. All the valves tested were in clinical use at some time in the period 1966-71. Most of the prostheses were obtained in 1968 or 1969. Many of this group showed a manufacturing standard which was less than impeccable.

    Statistics from Altmetric.com

    Request permissions

    If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.