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Eur J Cardiothorac Surg 2002;22:95-100
© 2002 Elsevier Science NL

Review

Do stentless valves make a difference?

Xu Y. Jin, John R. Pepper*

Department of Academic Surgery, National Heart and Lung Institute, Imperial College of Science, Technology & Medicine, Dovehouse Street, London, SW3 6LY, UK

Received 18 January 2002; received in revised form 18 March 2002; accepted 22 March 2002.

* Corresponding author

Stentless glutaraldehyde-preserved bioprosthetic valves for the aortic position were introduced into clinical practice in 1988. Their introduction coincided with the publication of several long-term observational studies of aortic homografts, which showed superior freedom from structural valve damage compared to the first generation stented porcine bioprosthesis. There followed 10 years of intensive investigation into the haemodynamic characteristics of stentless valves. These studies have demonstrated superior haemodynamic features in terms of transvalvular pressure gradients, effective orifice area, and more complete regression of left ventricular hypertrophy. Despite these advantages, stentless valves have yet to be adopted widely. This review seeks to explain this paradox.

Key Words: Aotic valve • Stentless valve • Bioprosthesis • Haemodynamics




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Copyright © 2002 European Association for Cardio-Thoracic Surgery. Published by Elsevier. All rights reserved.