Cineradiographical significance for diagnosis and treatment of thrombosed Björk-Shiley prosthesis in the aortic position
Nishi, Y.; Aoyagi, S.; Hirano, A.; Tanaka, K.; Yanagi, I.; Shimada, S.; Yanai, T.; Kosuga, K.; Oishi, K.
Nihon Kyobu Geka Gakkai 37(6): 1088-1093
1989
ISSN/ISBN: 0369-4739 PMID: 2809281 Document Number: 343363
In the periods between Febrauary 1973 and December 1987, 377 Bjork-Shiley valve prostheses have been implanted in the aortic position in our institute. The maximum opening angel of the prosthesis have been cineradiographically measured in 30 cases. The maximum opening angel of the convexoconcave valve having an opening angle of 60 degree (CC 60) was measured as 58.8 .+-. 1.9 degree and that of the monostrut valve having an opening angel of 70 degree was 69.4 .+-. 2.1 degree. During this period we have experienced 6 cases of thrombosed Bjork-Shiley prosthesis. They have shown restriction of the opening from 26 to 58.9 degree and restriction of the closing from 9.2 to 41.8 degree. Thrombolytic treatment was successful in case with thrombosed Bjork-Shiley prothesis which showed restriction of the opening angel on coneradiogram. 4 cases with restriction of the closing angel on cinderadiogram were treated operative thrombectomy. Three of them have had uneventful reoperative course in the follow up period of 8 years. We believe that cineradiography is very useful for not only diagnosis but also decision of management for thrombosed Bjork-Shiley prothesis in the aortic position.