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Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement
Published on: December 11, 2017
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Using a Regent Aortic Valve in a Small Annulus Mitral Position Is a Viable Option
Yaron D Barac1, Brittany Zwischenberger1, Jacob N Schroder1
1Division of Cardiothoracic Surgery, Duke University Medical Center, Durham, North Carolina.
The Annals of Thoracic Surgery
|December 21, 2017
Summary
The Regent mechanical aortic valve offers a viable solution for mitral valve replacement in patients with small mitral annuli. This approach demonstrates acceptable pressure gradients, making it a suitable option in challenging surgical cases.
Area of Science:
- Cardiovascular Surgery
- Biomedical Engineering
Background:
- Mitral valve replacement outcomes in small mitral annuli using aortic mechanical valves are not well-documented.
- Small mitral annuli present unique challenges in valve replacement surgery.
Purpose of the Study:
- To evaluate the efficacy and safety of using the Regent mechanical aortic valve for mitral valve replacement in patients with small mitral annuli.
Main Methods:
- Retrospective review of 31 patients undergoing mitral valve replacement with the Regent aortic valve due to small mitral annulus.
- Analysis of patient demographics, comorbidities, procedural details, and hemodynamic data.
Main Results:
- The study included 31 patients (mean age 60 years), with 97% having mitral stenosis or annulus calcification.
- Median valve size was 23 mm, with acceptable intraoperative (4.2 mmHg) and follow-up (5.8 mmHg) mean mitral gradients at 32 months.
- 55% of patients underwent concurrent procedures.
Conclusions:
- The Regent aortic mechanical valve is a viable option for mitral valve replacement in small mitral annuli, offering a larger orifice area.
- Acceptable pressure gradients were observed both intraoperatively and during long-term follow-up.
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