Abstract | BACKGROUND: Many studies have demonstrated the superior hemodynamics of stentless porcine aortic valves compared to stented valves. This article describes the operative techniques and reviews our 5-year experience with the Medtronic Freestyle stentless valve. METHODS: Between January 1993 and November 1997, 95 patients underwent implantation of the Medtronic Freestyle valve at a mean age of 76 years. All patients were seen at 6 months, 1 year, and annually thereafter for clinical assessment and Doppler echocardiography. RESULTS: There were three operative and ten late deaths (two cardiac and eight noncardiac). Three strokes and four transient ischemic attacks occurred in the follow-up period. Four patients had bacteremia that was treated successfully with antibiotics. No patient required reoperation for valve-related problems. Serial echocardiograms revealed a decrease in mean systolic gradients across the valve during the first year and an increase in effective orifice areas. Ninety-one percent of patients had no, or trace, aortic insufficiency at the time of discharge and this has not increased over time. CONCLUSION: The Medtronic Freestyle valve has excellent hemodynamics and good clinical results. In our experience, no patient has required reoperation in a 5-year follow-up.
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Authors | C F Sintek, T A Pfeffer, G S Kochamba, K L Yun, A D Fletcher, S Khonsari |
Journal | Journal of cardiac surgery
(J Card Surg)
1998 Sep-Oct
Vol. 13
Issue 5
Pg. 360-8
ISSN: 0886-0440 [Print] United States |
PMID | 10440651
(Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Coated Materials, Biocompatible
- Oleic Acids
- Polyethylene Terephthalates
- 2-(amino)oleic acid
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Topics |
- Aged
- Aged, 80 and over
- Aortic Valve
(diagnostic imaging, surgery)
- Bioprosthesis
- Coated Materials, Biocompatible
- Echocardiography, Doppler
- Female
- Follow-Up Studies
- Heart Valve Diseases
(physiopathology, surgery)
- Heart Valve Prosthesis
- Heart Valve Prosthesis Implantation
(instrumentation, mortality)
- Humans
- Male
- Middle Aged
- Myocardial Contraction
- Oleic Acids
- Polyethylene Terephthalates
- Retrospective Studies
- Survival Rate
- Treatment Outcome
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