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The Annals of Thoracic Surgery, Vol 53, 764-771, Copyright © 1992 by The Society of Thoracic Surgeons
RW Frater, NW Salomon, WG Rainer, DM Cosgrove 3d and E Wickham
The Edwards pericardial aortic valve has unique design features that
minimize cusp stress and reduce abrasion wear. Wear tests and in vivo fluid
dynamic tests have shown superior performance compared with other
bioprostheses. Between August 1981 and July 1985, 719 isolated aortic
valves were implanted in 10 US centers. Patients were aged 18 to 90 years
(mean, 64 years). Men were 63.3% of the patients. Aortic stenosis was
present preoperatively in 63.4% of patients. New York Heart Association
functional classes III and IV were assigned to 62% of the patients. Valve
sizes were 21 mm or less in 49% of patients. Concomitant procedures (most
often coronary artery bypass grafting) were performed in 48% of patients.
Hospital mortality was 4.7%. There was one valve-related death due to
anticoagulant hemorrhage. Late mortality yielded 23 valve-related deaths:
endocarditis (13), anticoagulant hemorrhage (4), thromboembolism (3),
structural (2), and pannus overgrowth (1). Freedom from valve-related death
at 7 years was 95.5%. Regarding valve survival, cusp tears were not seen.
There were 11 calcified valves and eight explants (57 to 107 months).
Seven-year freedom from all valve reoperation was 95.5%, with 11% of the
patients receiving warfarin sodium, freedom of the total series from
hemorrhage at 7 years was 93.3%, and from major thromboembolism, 95.8%.
Echocardiographic follow-up of hemodynamics at 7 years yielded the
following calculated effective orifice areas: 19 mm, 1 cm2; 21 mm, 1.3 cm2;
and 23 mm, 1.4 cm2. Average mean gradient for 19-mm valves was 15 mm Hg.
New York Heart Association class improved in 78% of the patients. The
Carpentier-Edwards pericardial valve, carefully studied by the Food and
Drug Administration guidelines, is easy to use and has excellent
hemodynamics.(ABSTRACT TRUNCATED AT 250 WORDS)
ARTICLES
The Carpentier-Edwards pericardial aortic valve: intermediate results
Cardiothoracic Surgery, Montefiore Medical Center, Bronx, New York 10467.
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