Abstract
We reviewed 314 consecutive patients in whom a Björk-Shiley Monostrut aortic valve prosthesis was inserted by our cardiothoracic surgical unit from June 1982 through June 1986. The group comprised 220 males (70%) and 94 females (30%), with a mean age of 60 years (range, 5 to 83 years). Two hundred ninety-six patients (94%) received an aortic prosthesis alone, and the other 18 (6%) received both an aortic Monostrut valve and a Starr-Edwards mitral valve prosthesis. In each case, preoperative data were collected prospectively, and a questionnaire was sent at the time of follow-up. The median follow-up period was 23 months (range, 0 to 46 months); 6 (2%) of the patients were lost to follow-up.
In the remaining 308 cases, there were 20 deaths (6.5%), 8 of which occurred within approximately 1 month after operation. There were no known instances of valve failure. One death occurred in the group that underwent double-valve replacement. Valve endocarditis accounted for 2 late deaths. With respect to preoperative dyspnea, 59 (19%) of the patients were in New York Heart Association functional Class I, 74 (24%) were in Class II, 138 (45%) were in Class III, and 37 (12%) were in Class IV. Postoperatively, there were 247 patients (80%) in Class I, 43 (14%) in Class II, 15 (5%) in Class III, and 3 (1%) in Class IV (p < 0.0001).
All of the patients received postoperative anticoagulant therapy; 3.4% per year were subsequently readmitted for bleeding problems. Thromboembolic events necessitating hospitalization occurred in 3.0% of the patients per year.
On the basis of these results, our early experience with the Björk-Shiley Monostrut valve in the aortic position has been satisfactory, with an acceptable rate of complications and no documented valve failures. (Texas Heart Institute Journal 1990;17:216-8)
Keywords: Björk-Shiley Monostrut valve
Keywords: aortic valve
Keywords: heart valve prosthesis
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Björk V. O., Lindblom D., Henze A. The monostrut strength. Scand J Thorac Cardiovasc Surg. 1985;19(1):13–19. doi: 10.3109/14017438509102815. [DOI] [PubMed] [Google Scholar]
- Björk V. O. The optimal opening angle of the Björk-Shiley tilting disc valve prosthesis. Scand J Thorac Cardiovasc Surg. 1981;15(3):223–227. doi: 10.3109/14017438109100577. [DOI] [PubMed] [Google Scholar]
- Lindblom D., Björk V. O., Semb B. K. Mechanical failure of the Björk-Shiley valve. Incidence, clinical presentation, and management. J Thorac Cardiovasc Surg. 1986 Nov;92(5):894–907. [PubMed] [Google Scholar]
- Ostermeyer J., Horstkotte D., Bennett J., Huysmans H., Lindblom D., Olin C., Orinius E., Semb G. The Björk-Shiley 70 degree convexo-concave prosthesis strut fracture problem (present state of information). Thorac Cardiovasc Surg. 1987 Apr;35(2):71–77. doi: 10.1055/s-2007-1020200. [DOI] [PubMed] [Google Scholar]
- Thulin L. I., Bain W. H., Huysmans H. H., van Ingen G., Prieto I., Basile F., Lindblom D. A., Olin C. L. Heart valve replacement with the Björk-Shiley Monostrut valve: early results of a multicenter clinical investigation. Ann Thorac Surg. 1988 Feb;45(2):164–170. doi: 10.1016/s0003-4975(10)62430-7. [DOI] [PubMed] [Google Scholar]