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Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots
Published on: May 21, 2017
The early and midterm function of decellularized aortic valve allografts
Francisco D A da Costa1, Ana Claudia B A Costa, Roberta Prestes
1Department of Cardiac Surgery, Santa Casa de Curitiba, Pontificia Universidade Catolica do Parana, Curitiba, Paraná, Brazil. fcosta13@mac.com
The Annals of Thoracic Surgery
|November 25, 2010
Summary
Decellularized aortic valve allografts (DAVA) show stable structure and good hemodynamics for aortic valve replacement. DAVA is a promising alternative, though longer follow-up is needed.
Area of Science:
- Cardiovascular Surgery
- Biomaterials Science
- Regenerative Medicine
Background:
- Aortic valve replacement is a common procedure.
- Decellularized aortic valve allografts (DAVA) offer a potential alternative to traditional prosthetics.
- Evaluating the early and midterm outcomes of DAVA is crucial for clinical adoption.
Purpose of the Study:
- To assess the early and midterm clinical performance of DAVA in patients undergoing aortic valve replacement.
- To evaluate valve hemodynamics, structural integrity, and calcification of DAVA using advanced imaging techniques.
- To determine the safety and efficacy of DAVA as a viable option for aortic valve repair.
Main Methods:
- 41 patients received DAVA for aortic valve replacement between 2005 and 2010.
- Decellularization was achieved using a 0.1% sodium dodecyl sulfate solution.
- Postoperative assessments included serial echocardiograms, MRI, and CT scans to monitor valve function, dimensions, and calcification.
Main Results:
- Low transvalvular gradients and minimal regurgitation were observed postoperatively and at follow-up.
- Stable aortic root dimensions were maintained, with only discrete calcification noted up to 3 years.
- Conduit biopsy showed preserved structure, no calcification, and limited host cell repopulation.
Conclusions:
- DAVA demonstrates stable structural integrity, low calcification rates, and adequate hemodynamics in early to midterm follow-up.
- DAVA presents a promising alternative for aortic valve replacement in selected patient populations.
- Longer-term studies are warranted to further confirm the durability and efficacy of DAVA.
