Three-Year Experience with the Ultracor Valve Prosthesis:
1998
From February 1992 to October 1995, 504 patients aged 3 to 69 years (median, 36 years) received 663 Ultracor prostheses (103 aortic, 259 mitral, 12 tricuspid, and 130 multiple). Early mortality was 2.77% with a rate of 3.88% for aortic valve replacement, 3.47% for mitral, 0% for tricuspid, and 0.99% for double valve replacement. Follow-up was 100% (719.5 patient-years) and the overall mortality (early and late deaths) was 3.76% with a rate of 4.85% after aortic valve replacement, 3.85% after mitral valve replacement, 8.33% after tricuspid valve replacement, and 2.97% after double valve replacement. There were no deaths among 29 patients who had triple valve replacement. All patients including 33 children (3.5 to 18 years of age) received sodium warfarin. The linearized risk per patient-year for all embolic events (major and minor) was 0.69%, 1.11%, and 0.69% for aortic, mitral, and multiple valve replacement respectively. When only major events were considered, the linearized risks were 0.27%, 0.13%, and ...
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