Related Experiment Videos
Medtronic Freestyle aortic root bioprosthesis: Implant techniques
D B Doty1, A Cafferty, N D Kon
1The Medtronic Freestyle Multicenter Clinical Trial Centers. Idddoty@ihc.com
Journal of Cardiac Surgery
|August 10, 1999
Summary
The Medtronic Freestyle bioprosthesis offers versatile aortic valve replacement options. Subcoronary implants showed lower operative risk and thromboembolism compared to root inclusion or replacement techniques.
Area of Science:
- Cardiovascular Surgery
- Bioprosthetics
- Medical Devices
Background:
- The Medtronic Freestyle bioprosthesis is a porcine aortic root device.
- It allows for three implantation techniques: subcoronary valve replacement, root inclusion, or complete root replacement.
- Technique selection depends on surgeon preference and patient pathology.
Purpose of the Study:
- To examine the advantages and differences of the three Medtronic Freestyle bioprosthesis implantation techniques.
- To evaluate the outcomes associated with each implantation method.
Main Methods:
- A Food and Drug Administration (FDA) clinical trial involving 1163 patients.
- Data collected from August 1992 to October 1997 across 21 international centers.
- Clinical data gathered pre-operatively, at operation, and annually post-operation.
Main Results:
- Subcoronary implants were associated with older patients, shorter aortic occlusion times, and lower operative risk (5.0%).
- Root replacement had higher operative risk (11.7%) and was used in patients with more aortic valve insufficiency.
- Thromboembolism rates were higher with root inclusion and replacement techniques compared to subcoronary implants.
Conclusions:
- The Medtronic Freestyle bioprosthesis is an effective and versatile device for aortic valve replacement.
- The device accommodates various aortic root pathologies and surgeon preferences.
- The choice of implantation technique impacts patient outcomes and risks.