The influence of annuloplasty ring geometry on mitral leaflet curvature.

The Annals of Thoracic Surgery
Liam RyanJoseph H Gorman

Abstract

The effect of mitral leaflet curvature on stress reduction is an important mechanism in optimizing valve function. We hypothesize that annuloplasty ring shape could directly influence leaflet curvature and, potentially, repair durability. We describe an echocardiographically based methodology for quantifying mitral valve geometry and its application to the characterization of ovine mitral valve geometry before and after implantation of an annuloplasty ring. Multiple mitral annular and leaflet geometric variables were calculated for 8 naïve adult male sheep using real-time three-dimensional echocardiographic images. These indexes were recalculated after annuloplasty using a 30-mm Carpentier-Edward Physio ring (n = 4; Edwards Lifesciences, Irvine, CA) or a 30-mm saddle ring (n = 4). After implantation of the Physio ring, the annular height to commissural width ratio (AHCWR) decreased from 19.4% +/- 2.3% to 11.1% +/- 2.5% (p = 0.06). After implantation of the saddle ring, AHCWR increased from 19.6% +/- 1.3% to 24.3% +/- 1.3% (p < 0.05). Statistically significant increases in three-dimensional Gaussian curvature occurred after implantation within six defined leaflet regions (A1 to A3, P1 to P3) of the saddle ring but only within th...Continue Reading

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Citations

Mar 26, 2010·European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery·Wolfgang BotheD Craig Miller
May 7, 2011·European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery·J Daniel RobbJoseph H Gorman
Feb 22, 2012·European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery·Mathieu VergnatJoseph H Gorman
Mar 1, 2013·Journal of Biomechanical Engineering·Jean-Pierre M RabbahAjit P Yoganathan
Oct 13, 2010·Circulation·John-Peder Escobar KvittingD Craig Miller
Mar 17, 2010·Future Cardiology·Mustafa ZakkarPrakash P Punjabi
Jun 25, 2014·Current Cardiology Reports·Mina M BenjaminPaul A Grayburn
Jan 18, 2012·Annual Review of Medicine·T Sloane Guy, Arthur C Hill
Nov 26, 2013·The Annals of Thoracic Surgery·Masaaki RyomotoYuji Miyamoto
Sep 28, 2013·The Annals of Thoracic Surgery·Arminder S JassarJoseph H Gorman
May 31, 2012·Seminars in Thoracic and Cardiovascular Surgery·Pavan Atluri, Michael A Acker
Mar 9, 2012·The Annals of Thoracic Surgery·Chun XuBenjamin M Jackson
Jan 17, 2012·The Annals of Thoracic Surgery·Vincent M WongLiang Ge
Oct 1, 2011·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Sagit Ben ZekryWilliam A Zoghbi
Aug 2, 2011·The Annals of Thoracic Surgery·Mathieu VergnatJoseph H Gorman
Feb 19, 2011·The Journal of Thoracic and Cardiovascular Surgery·Morten O JensenSten L Nielsen
Apr 24, 2010·The Journal of Thoracic and Cardiovascular Surgery·Wolfgang BotheD Craig Miller
Jul 18, 2015·The Annals of Thoracic Surgery·Wobbe BoumaJoseph H Gorman
Sep 28, 2010·The Annals of Thoracic Surgery·Feroze MahmoodKamal R Khabbaz
Nov 26, 2009·The Annals of Thoracic Surgery·Feroze MahmoodKamal R Khabbaz
Oct 27, 2009·The Annals of Thoracic Surgery·Pier Giorgio BrunoGermano Di Credico
Dec 22, 2010·The Annals of Thoracic Surgery·Arminder Singh JassarBenjamin M Jackson
Jan 16, 2010·The Journal of Thoracic and Cardiovascular Surgery·Wolfgang BotheD Craig Miller
Mar 23, 2011·European Journal of Echocardiography : the Journal of the Working Group on Echocardiography of the European Society of Cardiology·Enrico G CaianiMauro Pepi
Aug 10, 2017·General Thoracic and Cardiovascular Surgery·Masaaki RyomotoYuji Miyamoto
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Aug 23, 2018·International Journal for Numerical Methods in Biomedical Engineering·Bruno V RegoMichael S Sacks
Nov 19, 2015·Cardiovascular Engineering and Technology·Søren N SkovMorten O Jensen
Nov 18, 2019·The Journal of Thoracic and Cardiovascular Surgery·Marcin MalinowskiTomasz A Timek
Feb 17, 2021·Journal of Veterinary Cardiology : the Official Journal of the European Society of Veterinary Cardiology·T MizunoM Uechi
Mar 22, 2021·JACC. Cardiovascular Imaging·K Carlos El-TallawiWilliam A Zoghbi

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