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European Journal of Cardio-Thoracic Surgery, Vol 5, 635-640, Copyright © 1991 by European Association for Cardio-thoracic Surgery

ARTICLES

The influence of age on the durability of Carpentier-Edwards biological valves. Thirteen years follow-up

N al-Khaja, A Belboul, M Rashid, A el-Gatit, D Roberts, S Larsson and G William- Olsson
Department of Thoracic and Cardiovascular Surgery, Sahlgrenska Hospital, Gothenburg University, Sweden.

Two hundred and ninety-nine patients received 325 Carpentier-Edwards biological valves from April 1976 to April 1982. Valves were placed in the following positions: 150 aortic (AVR), 120 mitral (MVR), 26 multiple (MR), 2 pulmonary (PR) and 1 tricuspid (TR). The mean age was 54.7 years. The total follow-up time was 2545 patient-years. Patients were divided into different age groups: less than 40, 40-49, 50-59, 60- 69 and greater than 70 years and were followed-up for reoperations and tissue failure. Ninety-three operations were performed in 91 patients (30.5%) for valve related dysfunctions. The main cause of reoperation was primary tissue failure (85%). The respective incidence and risk of reoperation in the different age groups were 51.5% and 5%, 41.5% and 4%, 32% and 3%, 18% and 2.5%, and 0% for greater than 70 years of age. The risk of reoperation decreased significantly with increasing age (P less than 0.05). The respective incidence and risk of tissue failure in the age groups were 43.8% and 4.1%, 35% and 4%, 27.3% and 3.2%, and 17.2%, 2.4% and 0%. The freedom from reoperation and tissue failure was significantly higher in the older patient (greater than 60 years) compared to the younger patients (less than 60 years). The commonest cause of failure in young patients was calcification, while in older patients it was cusp rupture. Comparing aortic and mitral bioprostheses in the different age groups showed no difference between these valves in patients less than 50 years of age.(ABSTRACT TRUNCATED AT 250 WORDS)

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