Key result
The Sorin Mitroflow bovine pericardial valve demonstrated significantly lower mean transvalvular pressure gradients compared to the St. Jude Medical Epic porcine valve at 1 and 5 years postoperatively.
Why the study?
The choice between porcine and pericardial tissue valves for bioprosthetic aortic valve replacement remains complex, prompting an evaluation of their hemodynamic and clinical differences.
Does the Sorin Mitroflow bovine pericardial valve improve postoperative hemodynamic performance compared to the St. Jude Medical Epic Supra porcine valve in patients undergoing surgical aortic valve replacement?
Cohort (n=71)
No
Does the Sorin Mitroflow bovine pericardial valve improve postoperative hemodynamic performance compared to the St. Jude Medical Epic Supra porcine valve in patients undergoing surgical aortic valve replacement?
Mean Difference: 5.5
Absolute Event Rate: 13.7% vs 19.2%
p-value: p=<0.001
Bovine pericardial valves demonstrated superior hemodynamic performance with lower transvalvular gradients compared to porcine valves up to 5 years post-surgery, though both provided excellent clinical improvement and similar mid-term survival.
Authors
No takes yet. Share an insight, caveat, or question.
Both valves remain reasonable SAVR choices; leaves open whether pericardial designs improve long-term hemodynamics or survival.
Manchev et al. (2023) conducted a cohort in Aortic valve disease requiring surgical aortic valve replacement (n=71). Sorin Mitroflow bovine pericardial valve vs. St. Jude Medical Epic Supra porcine valve was evaluated on Mean transprosthetic pressure gradient at 1 year (21 mm valve size) (MD 5.5, p=<0.001). The Sorin Mitroflow bovine pericardial valve demonstrated significantly lower mean transvalvular pressure gradients compared to the St. Jude Medical Epic porcine valve at 1 and 5 years postoperatively.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: