title: The fate of aortic valve homografts 12 to 17 years after implantation.
abstract: Results of long-term follow-up of an early cohort of patients receiving aortic valve homografts for aortic stenosis and aortic insufficiency are presented. All patients were operated upon by a single surgeon from 1966 to 1971. Eighty-three patients underwent insertion of 85 homograft aortic valves. Homografts were sterilized with either betapropiolactone (39 valves) or gamma irradiation (41 valves) and were inserted following storage in nutrient medium (16 valves) or after cryopreservation (51 valves). All homograft valves were sutured in the subcoronary position using a freehand technique. There was a 55 percent 15-year actuarial patient survival and a 16 percent 15-year actuarial homograft survival in this cohort. Homograft valve failure occurred gradually allowing the patients to be observed until they developed hemodynamic compromise at which time elective valve replacement was performed.
authors.affiliation: Division of Cardiothoracic Surgery, University of Wisconsin, Madison.
authors.forename: D J
authors.initials: DJ
authors.lastname: Cohen
authors.forename: P D
authors.initials: PD
authors.lastname: Myerowitz
authors.forename: W P
authors.initials: WP
authors.lastname: Young
authors.forename: P S
authors.initials: PS
authors.lastname: Chopra
authors.forename: H A
authors.initials: HA
authors.lastname: Berkoff
authors.forename: G M
authors.initials: GM
authors.lastname: Kroncke
authors.forename: E
authors.initials: E
authors.lastname: Beatty
mesh_terms: D000206:Actuarial Analysis; D000293:Adolescent; D000328:Adult; D000368:Aged; D001021:Aortic Valve / Q000637:transplantation*; D001022:Aortic Valve Insufficiency / Q000401:mortality / Q000601:surgery; D001024:Aortic Valve Stenosis / Q000401:mortality / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis / Q000401:mortality*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012086:Reoperation / Q000401:mortality; D013536:Suture Techniques; D013997:Time Factors; D014184:Transplantation, Homologous