Should patients with Björk-Shiley valves undergo prophylactic replacement?

About 85 000 patients have undergone replacement of diseased heart valves with prosthetic Björk-Shiley convexo-concave (CC) valves. These valves are prone to fracture of the outlet strut, which leads to acute valve failure that is usually fatal. Should patients with these valves undergo prophylactic...

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Bibliographic Details
Published in:The Lancet (British edition) 1992-08, Vol.340 (8818), p.520-523
Main Authors: Birkmeyer, J.D., O'Connor, G.T., Marrin, C.A.S.
Format: Article
Language:English
Subjects:
Adult
Aged
Biological and medical sciences
Decision Support Techniques
Equipment Failure
Female
Health risks
Heart
Heart Valve Prosthesis - instrumentation
Humans
Life expectancy
Male
Medical equipment
Medical research
Medical sciences
Middle Aged
Mortality risk
Reoperation
Risk Factors
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Surgery of the heart
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Description
Summary:About 85 000 patients have undergone replacement of diseased heart valves with prosthetic Björk-Shiley convexo-concave (CC) valves. These valves are prone to fracture of the outlet strut, which leads to acute valve failure that is usually fatal. Should patients with these valves undergo prophylactic replacement to avoid fracture? The incidence of strut fracture varies between 0% and 1·5% per year, depending on valve opening angle (60° or 70°), diameter (
ISSN:0140-6736
1474-547X
DOI:10.1016/0140-6736(92)91717-M