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Ann Thorac Surg 1988;45:210-212
© 1988 The Society of Thoracic Surgeons
From the Division of Cardiothoracic Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, Canada
Accepted for publication June 5, 1987.
* Address reprint requests to Dr. Masters, Division of Cardiothoracic Surgery, University of Ottawa Heart Institute, Ottawa Civic Hospital, 1053 Carling Ave, Ottawa, Ontario, Canada K1Y 4E9
Three cases of acute extrinsic obstruction of the Medtronic-Hall prosthesis in the mitral position are described. In 2 cases papillary muscle and in 1 case suture overhang caused sticking of the tilting disk against the valve rim. The mechanisms of extrinsic obstruction of the tilting disk valve, its recognition, and its prevention are discussed with a review of the literature.
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