Related Experiment Video
Updated: May 14, 2026
Protocol for Relative Hydrodynamic Assessment of Tri-leaflet Polymer Valves
Published on: October 17, 2013
A look at recent improvements in the durability of tissue valves
Takahiro Nishida1, Ryuji Tominaga
1Department of Cardiovascular Surgery, Kyushu University Graduate School of Medical Sciences, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan. tnishida@heart.med.kyushu-u.ac.jp
Background:
The various uses of biological valves for either aortic or mitral valve replacement have recently increased because of the growing proportion of elderly patients requiring surgery.
Results:
The durability of recent xenografts has been reported to be over 90 % at 10 years after aortic or mitral valve replacement for elderly patients more than 65 years of age, and therefore the guidelines now recommend the use of bioprostheses for patients over 65 years of age. Bioprostheses are also recommended for valve replacement of the right side of the heart by several authors; however, no clear guidelines are available. Trans-catheter aortic valve replacement and percutaneous pulmonary valve implantation are promising procedures for high-risk patients, although evaluation of the long-term durability of these valves is mandatory.
Conclusions:
This article will review the development of the tissue valve for valve surgery.
