[An eighteen-year evaluation of the Bjork-Shiley valve prosthesis].
We evaluated the long-term (18 years) results of 356 patients undergoing valve replacement with Björk-Shiley valve prosthesis (aortic, 212; mitral 120; double valve, 24) between 1970 and 1988. Actuarial survival rates were 90% (18 years) for AVR, 80% 'years) for MVR and 90% (8 years) for DVR. Actuarial rates of thromboembolism were 99% (18 years) for AVR, 98% (8 years) for MVR and 94% (8 years) for DVR. Actuarial rates of freedom from events (including valve failure, thromboembolism, reoperation and prosthetic valve endocarditis) were 82% (18 years) for AVR, 95% (8 years) and 94% (8 years) for DVR. There were no differences in these results among spherical disc, convexo-concave disc and monostrut valve. In conclusion, this study demonstrated that Björk-Shiley valve showed a low incidence of postoperative events. These results endorse our choice of the Björk-Shiley.
Nakano
S
S
First Department of Surgery, Osaka University Medical School.
Matsuda
H
H
Taniguchi
K
K
Kawamoto
T
T
Mitsuno
M
M
Ueda
T
T
Kawashima
Y
Y
D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis / Q000009:adverse effects; D006801:Humans; D011183:Postoperative Complications; D012086:Reoperation; D015996:Survival Rate; D013923:Thromboembolism / Q000209:etiology; D013997:Time Factors