Key result
Radiology, implant dates, or serial numbers identify convexo-concave Bjork-Shiley valves prone to strut fracture.
Why the study?
The hazard of strut fracture is effectively confined to the convexo-concave Bjork-Shiley valve, necessitating identification methods for patient management.
Identifying the specific type of Bjork-Shiley prosthetic valve is crucial for managing the risk of strut fracture, which is primarily associated with the convexo-concave model.
Management of patients with Bjork-Shiley prosthetic valvesThere are three basic types of Bjork-Shiley valve (figure) that may be encountered in British patients.The much publicised hazard of strut fracture is effectively confined to the convexo-concave valve so in advising and managing patients electively it is helpful to be able to identify these valves.To some extent the identity of the valve can be determined from its date of implantation, but valves can be distinguished with certainty by their serial numbers when these are available.Otherwise it should be possible to identify them by radiological appearances.
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Tom Treasure (1991) conducted a review in Bjork-Shiley prosthetic valves. Valve identification strategies was evaluated. Identification of the convexo-concave Bjork-Shiley valve, which carries a hazard of strut fracture, can be achieved via serial numbers, date of implantation, or radiological appearances.
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