Evaluation of the Björk-Shiley Prosthetic Valve by Echocardiography
Echocardiography is currently being used in many institutions to aid in the evaluation of prosthetic valve function. Articles have been published regarding echocardiographic evaluation of the Beall disc valve and the Starr-Edwards and Cutter ball varieties, but very little is available in the literature concerning studies performed on the til ting-disc valve. We have conducted studies in vivo and in vitro to determine the feasibility of ultrasonic visualization and assessment of the motion of a tilting-disc (Björk-Shiley) prosthetic valve in both the mitral and aortic positions.
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