Poor clinical performance of the Wessex porcine heart valve bioprosthesis at nine years' follow up

摘要

Conclusions-The Wessex bioprosthesis is associated with high thrombogenicity, early structural dysfunction, and a high valve related morbidity/mortality which justifies very close follow up of patients fitted with them. Objective-To assess the long term per- Formance of the Wessex porcine biopros- Theses implanted in a consecutive series Of patients. Design-A retrospective case series. Patients-Between January 1985 and July 1991, 184 Wessex bioprostheses (78 mitral, 102 aortic, and 4 tricuspid) were implanted in 150 patients.