Smith, G. H., and Chandra, K. (1973). Thorax, 28, 627-630. Massive aortic incompetence associated with the Björk-Shiley prosthesis. Three patients are described. In each, a diseased aortic valve was replaced by a Björk-Shiley valve prosthesis. For different reasons, ventricular fibrillation occurred when the patient was still on cardiopulmonary bypass. In these circumstances, a massive leak occurred through the valve and caused overdistension of the left ventricle.
Subsequent examination of the valves in the laboratory showed that, under the conditions described above, there was a leakage equal in volume to half the forward flow.
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