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The Journal of Thoracic and Cardiovascular Surgery, Vol 97, 95-97, Copyright © 1989 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Mechanical failure of the Bjork-Shiley valve. Updated follow-up and considerations on prophylactic rereplacement

D Lindblom, L Rodriguez and VO Bjork
Department of Thoracic Surgery, Karolinska Hospital, Stockholm, Sweden.

The early production series of the 29 to 31 mm 70-degree convexo- concave (CC70) Bjork-Shiley heart valves constitutes a subgroup of CC70 values with an extra high risk of outlet strut fracture. The hazard function for mechanical failure among these valves has remained almost constant over a 7-year follow-up period, and the 7-year actuarial incidence of mechanical failure among these valves is 12.5%. Selected patients with these valves will be considered for prophylactic rereplacement.

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