Copyright © 1990 by the European Society of Cardiology.
© 1990 The European Society of Cardiology
Long-term performance of Star-Edwards silastic ball valves and St Jude Medical bi-leaflet valves
A comparative and analysis of implantations during 1980-86 for aortic stenosis
Department of Thoracic & Cordiovascular Surgery Aarhus, Denmark
*Cardiology, Skejby Sygehus, Aarhus University Hospital Aarhus, Denmark
Received 30 March 1989; revised 13 June 1989; .
Correspondence Ole Lund, M.D., Department of Thoracic & Cardiovascular Surgery, Skejby Sygehus, Aarhus University Hospital, DK-8200 Aarhus N. Denmark
Abstract
Long-term performance of Starr-Edwards silastic ball (SESB, n = 168) and St Jude Medical bi-leaflet (SJMB, n = 93) valves in patients who were alive 30 days after implantation (1980–86) for aortic stenosis was compared. Mean follow-up was 3–0 years (0–1–7–9 years). The SESB and SJMB groups differed as regards female gender (18% vs 47%, P<00001), NYHA classes III–1V (59% vs 72%, P<0005), coronary artery disease (CAD, 32% vs 62%, P<0-01) in patients with coronary arteriography (n = 82 andn = 55, respectively) , and prosthetic cumulus diameter (26 ±1 vs23±2 mm, P < 00001). Five-year survival ± SE in SESB vs SJMB patients was: total population, 89±3% vs 80±6% (NS); coronary arteriography population, no CAD,90±4% vs 100% (NS), and with CAD, 71 ±11% vs60±13% (NS; P = 001 for CAD). Five-year event-free survival±SE in SESB vs SJMB patients was 95 2% vs 97 ±2% (NS) for thromboembolism, 95±2% vs 89±4% (NS)for coumadin-relatedhaemorrhage, 98± 1% vs 99± 1% (NS)for endocarditis, 98±1% vs 94±5% (NS) for paravalvular leak, 88±3% vs 79±6% (NS) for all valve-related complications, and 98 ±1% vs95±4% (NS) for prosthesis replacement. Thrombotic occlusion or structural failure were not observed. No patients without CAD experienced thromboembolic events. Cox regression analyses (in both total population and coronary arteriography population) of survival as well as the various complications revealed that the type of prosthesis did not have predictive influence. CAD was an independent risk factor for thromboembolism, haemorrhage, and all valve-related complications. Previous systemic hypertension was independently predictive of haemorrhage. The SESB and SJMB pros theses showed comparable and acceptable long-term performance. Only patient-related variables, notably CAD, influenced late results. The proven durability and relatively low price of the SESB valves together with the excellent haemodynamic performance of even small-sized SJMB valves should be considered in the light of the present results
Key Words: Starr-Edwards silastic ball valve • St Jude Medical valve • heart valve prosthesis • aortic stenosis • long-term survival • prosthesis-related complications • coronary artery disease • Cox regression analysis
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