Why the study?
Does isoproterenol and pacing stress reveal functional differences between Björk-Shiley and St. Jude medical prostheses in patients after aortic valve replacement?
Population
26 patients evaluated approximately 7 months after aortic valve replacement with Björk-Shiley valves or St…
Comparison
Stress evaluation using isoproterenol infusion… vs Comparison between Björk-Shiley and St. Jude…
Design
Cohort
Follow-up
approximately 7 months after aortic valve replacement
Authors
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No functional differences under stress; leaves open whether prosthesis choice affects long-term outcomes after AVR.
Does isoproterenol and pacing stress reveal functional differences between Björk-Shiley and St. Jude medical prostheses in patients after aortic valve replacement?
Isoproterenol stress testing is a sensitive method for evaluating prosthetic valvular hemodynamics, revealing no functional differences between Björk-Shiley and St. Jude medical valves.
Thormann et al. (1981) studied this question.
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