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One-year experience with the Edwards stentless "Prima" aortic bioprosthesis
J A Piotrowski1, F Splittgerber, A Balzereit
1Department of Thoracic and Cardiovascular Surgery, Essen University Medical School, Germany.
The Journal of Cardiovascular Surgery
|December 1, 1996
Summary
The Edwards "Prima" stentless bioprosthesis demonstrated excellent short-term hemodynamic function in aortic valve disease patients. This new aortic valve replacement shows promising results with very low pressure gradients and good valve function after one year.
Area of Science:
- Cardiovascular Surgery
- Biomedical Engineering
- Cardiac Valve Replacement
Background:
- Stentless bioprostheses are designed for improved hemodynamic performance compared to stented valves.
- The absence of a sewing ring and stents in stentless designs aims to enhance leaflet motion and reduce obstruction.
Purpose of the Study:
- To evaluate the initial clinical outcomes and hemodynamic function of the Edwards
- Prima
- stentless bioprosthesis.
- To assess the safety and efficacy of this novel aortic valve in patients with aortic valve disease.
Main Methods:
- Implantation of 21 Edwards
- Prima
- stentless bioprostheses between April 1993 and March 1994.
- Patients underwent either subcoronary or
- mini-root
- continuous suture techniques.
- Intraoperative pressure gradients and postoperative echocardiography were used for assessment.
Main Results:
- No operative mortality was observed in the study cohort.
- Intraoperative measurements indicated very low or undetectable pressure gradients across the aortic valve.
- One-year echocardiographic follow-up confirmed very good valve function.
Conclusions:
- The Edwards
- Prima
- stentless bioprosthesis shows excellent short-term results in patients with aortic valve disease.
- The valve replacement offers favorable hemodynamics with a minimal increase in aortic cross-clamp time.
- Long-term outcomes require further investigation due to the valve's recent availability.