The influence of saddle-shaped annuloplasty on leaflet curvature in patients with ischaemic mitral regurgitation.

European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery
Mathieu VergnatJoseph H Gorman

Abstract

Reports indicate that repair procedures for ischaemic mitral regurgitation (IMR) are less durable than previously thought. Repair failure has been shown to be stress related. Leaflet curvature is the major determinant of valve stress. Theoretical and animal experiments have shown that saddle-shaped annuloplasty optimizes leaflet curvature when compared with standard flat ring annuloplasty. Despite this, the influence of the ring shape on leaflet curvature has not been described in patients with IMR. This study uses real-time three-dimensional echocardiography (rt-3DE) to assess the influence of the ring shape on leaflet curvature. Rt-3DE was performed in 21 patients with IMR after placement of either a flat (n = 10, CE-Physio, Edwards) or saddle-shaped (n = 11, Profile 3D, Medtronic) annuloplasty ring. A combination of commercially available and customized software was used to measure multiple leaflet curvature parameters across all regions of the mitral valve. Independently of the shape of the annuloplasty ring, all patients were subject to the same degree of annular undersizing. Patients who received saddle-shaped annuloplasty rings had greater leaflet curvature in all six mitral valve leaflet regions (A1 = 0.36 ± 0.10, A2 = ...Continue Reading

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Citations

Feb 2, 2013·Journal of Medical Devices·Melissa YoungJose L Navia
Jun 4, 2014·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Sorina MihăilăLuigi P Badano
Nov 2, 2014·Interactive Cardiovascular and Thoracic Surgery·Thilo NoackJoerg Seeburger
Dec 3, 2014·Journal of Cardiothoracic and Vascular Anesthesia·Andrew Maslow
Sep 8, 2016·International Journal for Numerical Methods in Biomedical Engineering·Ahnryul ChoiHyunggun Kim
Apr 10, 2017·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Matthew A JolleyDavid M Harrild
Jan 19, 2018·General Thoracic and Cardiovascular Surgery·Hiroyuki NishiYoshiki Sawa
Jan 4, 2017·European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery·Christos G MihosOrlando Santana
Aug 14, 2018·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Matthew A JolleyDavid M Harrild
Dec 29, 2020·The Annals of Thoracic Surgery·Hannah H NamMatthew A Jolley

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