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J Thorac Cardiovasc Surg 2005;129:1446
© 2005 The American Association for Thoracic Surgery

Brief Communication

Acute leaflet arrest in St Jude Medical Regent aortic valve

Oslo Heart Center, National Hospital, Oslo, Norway.

Received for publication January 11, 2005; accepted for publication February 8, 2005.

^_* Address for reprints: Eivind Øvrum, MD, PhD, Oslo Heart Center, Box 2684, St Hanshaugen 0131 Oslo, Norway (Email: eivind.ovrum@hjertesenteret.no).

The first 20% of the full text of this article appears below.

Manufacturers of mechanical heart valves have, during the last years, modified previous versions, particularly the prostheses for the aortic position. Most efforts have been made to optimize the size by changing the original design for intra-annular implantation toward placement of the valve in a supra-annular position. The SJM Regent valve (St Jude Medical, Inc) is such a modification and is redesigned for supra-annular implantation by constructing a supra-annular cuff and shifting the carbon rim to a supra-annular design. The intention is to have a greater geometric orifice area within a given tissue annulus dimension. This effect has been proved for other mechanical valves, by increasing the prosthesis size in small aortic ostia¹

In the hands of senior cardiac surgeons performing numerous aortic valve replacements (AVRs) per year, 3 patients had their prostheses explanted immediately during the operation as a result of leaflet arrest. The prostheses were . . . [Full Text of this Article]

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