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Ann Thorac Surg 2007;83:1920-1921
© 2007 The Society of Thoracic Surgeons
a Division of Cardiovascular Surgery, Toronto General Hospital, 200 Elizabeth St, Toronto, Ontario, M5G 2C4 Canada
b Division of Cardiovascular Surgery, Toronto General Hospital, 200 Elizabeth St, Toronto, Ontario, M5G 2C4 Canada
(Email: michael.borger@utoronto.ca; tirone.david@uhn.on.ca).
| The first 20% of the full text of this article appears below. |
To the Editor:
We appreciate the comments of Radermecker and Lancellotti [1] regarding our recent review article on ischemic mitral regurgitation (IMR) [2]. The important work performed by Pierard and Lancellotti [3] has markedly improved our understanding of the pathophysiology of IMR.
We agree with the authors that segmental mitral valve (MV) leaflet prolapse may occasionally occur in patients with chronic IMR secondary to papillary muscle (PM) fibrosis and elongation, or even rupture of a head of the PM [4]. The prolapse may be difficult to visualize on echocardiography, particularly if it involves a small portion of the leaflets or is confined to the posteromedial commissure. Further complicating the
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Ann. Thorac. Surg. 2007 83: 1919-1920.
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