Copyright © 1990 by the European Society of Cardiology.
© 1990 The European Society of Cardiology
Heart valve replacement with the Björk-Shiley and St Jude Medical prostheses: A randomized comparison in 178 patients
Division of Cardiology, Department of Internal Medicine and Division of Cardiac and Thoracic Surgery, Department of Surgery, University Hospital Basel Switzerland
Received 4 July 1989; revised 2 October 1989; .
Correspondence address: Prof. D. Burckhardt M.D., Division of Cardiology, Department of Internal Medicine, University Hospital, CH-4031 Basel/Switzerland.
Abstract
In 178 patients, a randomized prospective comparison between the 60° spherical disc Björk-Shiley (BS) and the St Jude Medical (SJM) heart valve prostheses was performed. Four-week perioperative mortality was zero in the BS (n = 84) and 4.3% in the SJM group (n = 94). During a mean ( ± SD) follow-up of 52 ± 20 months or 778 patient-years, late cardiac mortality per year was 2.4% in the BS and 2.2% in the SJM group. The yearly thromboembolic rates were 1.4% in the BS and 2.0% in the SJM group. There was no mechanical valve failure or haemolytic anaemia. Paravalvular leaks and major bleeding complications occurred at low rates in both groups (1.1% and2.2% per year in BS; 0.7% and 1.7% per year in SJM). Functional results were similarly good with 96% of patients with BS valves and 95% of patients with SJM prostheses being in NYHA classes I and II, respectively.
We conclude that heart valve replacement with mechanical prostheses can be performed with equally good results using either the Björk-Shiley spherical disc valve or the St Jude Medical bileaflet prosthesis.
Key Words: Valve replacement • St Jude Medical prosthesis • Björk-Shiley prosthesis • randomized comparison • prosthetic heart valve
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