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Chest, Vol 70, 100-102, Copyright © 1976 by American College of Chest Physicians

ARTICLES

Persistence of the third heart sound after resection of the native mitral and tricuspid valves. Evidence against the valvular theory of third sound origin

WD Towne, J Cruz, CJ Tatooles and KK Chawla

A patient is described with severe rheumatic mitral and tricuspid insufficiency in whom both atrioventricular valves with their chordae tendineae and papillary muscles were resected and replaced with Hancock porcine grafts. This would appear to be the second such patient reported and the first described in detail in whom the third heart sound persisted postoperation. This occurrence documents the fact that a third heart sound can occur in the absence of native atrioventricular valve leaflets and the major portions of the subvalvular supporting apparatus, and argues against the theory that the third heart sound is generated by either the valvular leaflets of the subvalvular apparatus.




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Copyright © 1976 by the American College of Chest Physicians.