Abstract
From 1972 through 1976, 140 patients underwent aortic valve replacement (AVR) with the Lillehei-Kaster (LK) prosthesis and 18 additional patients had AVR plus coronary bypass procedures. Follow- up information was obtained in 98% of the patients. The operative mortality rate was 7.5% and the actuarial 5- year survival rate was, 79%. Two episodes of thromboembolism occurred in 3,645 patient-months. Prosthesis malfunction or significant hemolysis has not occurred. Postoperative catheterization studies revealed a functional valve area of 0.81 cm2 with the 14A prosthesis; all other valve areas were greater than 1.1 cm2. Continued use of the LK aortic valve prosthesis with warfarin anticoagulation is recommended in sizes greater than 14A.
Résumé
Entre 1972 et 1976, 140 malades ont subi un remplacement de valve aortique avec une prothèse de Lillehei-Kaster (LK) et 18 autres un remplacement valvulaire aortique combiné à un bypass coronaire: 98% des cas ont été suivis. La mortalité postopératoire est de 7.5%. La survie actuarielle à 5 ans est de 79%. Il y a eu 2 épisodes de thrombo-embolie sur 3,645 mois/malades. Il n'y a eu ni malfonction de la prothèse, ni hémolyse significative. Le cathétérisme postopératoire montre une surface fonctionnelle de la valve de 0.81 cm2 pour les prothèses 14A et de 1.1 cm2 pour les autres valves. Nous recommandons l'emploi de valves aortiques LK de tailles supérieures à 14A avec anticoagulation par warfarine.
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Dr. Mayer is supported by a National Research Service Award from the National Institute of Health.
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Mayer, J.E., Pyle, R.B., Lindsay, W.G. et al. Five-year experience with Lillehei-kaster prostheses in the aortic position. World J. Surg. 2, 351–356 (1978). https://doi.org/10.1007/BF01561517
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DOI: https://doi.org/10.1007/BF01561517