Why the study?
Does the Björk-Shiley disc valve improve long-term survival compared to the Lillehei-Kaster disc valve in patients undergoing aortic valve replacement?
Population
300 patients undergoing aortic valve replacement
Comparison
Björk-Shiley disc valve in the aortic position vs Lillehei-Kaster disc valve in the aortic position
Design
RCT, selected at random
Follow-up
mean 4 3/4 years (range 3 1/4-7 years)
Authors
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Björk-Shiley may confer a survival edge after aortic valve replacement; extends randomized comparisons of mechanical prostheses.
Does the Björk-Shiley disc valve improve long-term survival compared to the Lillehei-Kaster disc valve in patients undergoing aortic valve replacement?
The Björk-Shiley valve demonstrated a trend toward better 7-year survival and significantly fewer sudden deaths compared to the Lillehei-Kaster valve for aortic valve replacement.
Olaf W. Levang (1981) studied this question.
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