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Ann Thorac Surg 1999;68:2342-2344
© 1999 The Society of Thoracic Surgeons

Case Reports

Transient dysfunction of the freestyle stentless xenograft

Kazunori Uemura, MDa, Junichi Utoh, MDa, Masahiko Hara, MDa, Yoshiaki Ikuta, MDa, Nobuo Kitamura, MDa

a First Department of Surgery, School of Medicine, Kumamoto University, Kumamoto, Japan

Address reprint requests to Dr Uemura, First Department of Surgery, School of Medicine, Kumamoto University, Honjoh 1-1-1, 860-0811 Kumamoto, Japan

After replacement of a bicuspid aortic valve with a Freestyle stentless xenograft, right coronary leaflet dysfunction and an elevated pressure gradient developed. Attempts to match the right and left ostia of the prosthesis, which were located at an angle of less than 120 degrees, to the native right and left ostia, which were located at 180 degrees, may have resulted in the leaflet distension. This is a suggestive finding about its implantation technique.


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