Rigid, Complete Annuloplasty Rings Increase Anterior Mitral Leaflet Strains in the Normal Beating Ovine Heart
نویسندگان
چکیده
منابع مشابه
Rigid, complete annuloplasty rings increase anterior mitral leaflet strains in the normal beating ovine heart.
BACKGROUND Annuloplasty ring or band implantation during surgical mitral valve repair perturbs mitral annular dimensions, dynamics, and shape, which have been associated with changes in anterior mitral leaflet (AML) strain patterns and suboptimal long-term repair durability. We hypothesized that rigid rings with nonphysiological three-dimensional shapes, but not saddle-shaped rigid rings or fle...
متن کاملHow do annuloplasty rings affect mitral annular strains in the normal beating ovine heart?
BACKGROUND We hypothesized that annuloplasty ring implantation alters mitral annular strains in a normal beating ovine heart preparation. METHODS AND RESULTS Sheep had 16 radiopaque markers sewn equally spaced around the mitral annulus. Edwards Cosgrove partial flexible band (COS; n=12), St Jude complete rigid saddle-shaped annuloplasty ring (RSA; n=10), Carpentier-Edwards Physio (PHY; n=11),...
متن کاملHow Do Annuloplasty Rings Affect Mitral Annular Strains in the Normal Beating Ovine
Wolfgang Bothe, Manuel K. Rausch, John-Peder Escobar Kvitting, Dominique K. Echtner, Heart? How Do Annuloplasty Rings Affect Mitral Annular Strains in the Normal Beating Ovine Print ISSN: 0009-7322. Online ISSN: 1524-4539 Copyright © 2012 American Heart Association, Inc. All rights reserved. is published by the American Heart Association, 7272 Greenville Avenue, Dallas, TX 75231 Circulation doi...
متن کاملRegional stiffening of the mitral valve anterior leaflet in the beating ovine heart.
Left atrial muscle extends into the proximal third of the mitral valve (MV) anterior leaflet and transient tensing of this muscle has been proposed as a mechanism aiding valve closure. If such tensing occurs, regional stiffness in the proximal anterior mitral leaflet will be greater during isovolumic contraction (IVC) than isovolumic relaxation (IVR) and this regional stiffness difference will ...
متن کاملAnterior mitral leaflet curvature during the cardiac cycle in the normal ovine heart.
BACKGROUND The dynamic changes of anterior mitral leaflet (AML) curvature are of primary importance for optimal left ventricular filling and emptying but are incompletely characterized. METHODS AND RESULTS Sixteen radiopaque markers were sutured to the AML in 11 sheep, and 4-dimensional marker coordinates were acquired with biplane videofluoroscopy. A surface subdivision algorithm was applied...
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ژورنال
عنوان ژورنال: Circulation
سال: 2011
ISSN: 0009-7322,1524-4539
DOI: 10.1161/circulationaha.110.011163