Aortic Valve Replacement. A Randomized Study Comparing the Björk-Shiley and Lillehei-Kaster Disc Valves. Transvalvular Regurgitation and Occurrence of Paravalvular Fistulas

Three hundred patients were selected at random in order to compare the Björk-Shiley (B-S) and the Lillehei-Kaster (L-K) valves in the aortic position. The transvalvular regurgitation was evaluated by peroperative flow recordings in 97 cases. The leakage was found to be 7.6% and 7.5% of forward flow...

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