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  • Title: Clinical experience with the Lillehei-Kaster cardiac valve prosthesis.
    Author: Mitha AS, Matisonn RE, le Roux BT, Chesler E.
    Journal: J Thorac Cardiovasc Surg; 1976 Sep; 72(3):401-7. PubMed ID: 785108.
    Abstract:
    This paper reviews our experience with the Lillehei-Kaster pivoting disc prosthesis in 155 patients with aortic and mitral valve disease. We employed 189 valves during the period 1971 to 1974. The early surgical mortality rates for isolated mitral, isolated aortic, and combined mitral and aortic valve replacements were 9 per cent, 14 per cent, and 3 per cent, respectively. Postoperatively, there was no evidence of significant hemolysis, and the gradients across the prostheses were satisfactory. Clinical evaluation of prosthetic function was made difficult by the infrequency of an opening click and the common occurrence of mid-diastolic murmurs even with minimal gradients. The most disturbing complication, which has led to our abandoning use of this valve, was thrombosis, which occurred in at least 10 per cent of the mitral and 5 per cent of the aortic valves. The cause is thought to be late prosthetic disproportion as the heart shrinks in size.
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