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Ann Thorac Surg 2003;76:66-73
© 2003 The Society of Thoracic Surgeons
a Department of Cardiothoracic Surgery, St. George’s Hospital, London, United Kingdom
Accepted for publication January 7, 2003.
* Address reprint requests to Dr Murday, Scottish Cardiopulmonary Transplant Unit, Glasgow Royal Infirmary, Alexandra Parade, Glasgow G31 2ER United Kingdom
e-mail: andrew.murday{at}btinternet.com
BACKGROUND: There is a paucity of controlled trials comparing the merits of different heart valve prostheses. In this prospective randomized trial we compared Starr Edwards and St. Jude prostheses in the aortic and mitral positions.
METHODS: Two hundred sixty-seven patients and 122 patients undergoing aortic and mitral valve replacement, respectively, were allocated by minimization to receive either St. Jude or Starr Edwards prostheses. Patients (2 patients were lost to follow-up) were followed up in a special clinic. Event definition, recording, and reporting were in accordance with published guidelines.
RESULTS: There were no demographic differences between patients receiving the two different valve models. With the exception of infective endocarditis, we found no differences in the rates of death or complication between patients receiving a Starr Edwards prosthesis or a St. Jude prosthesis in either position. Neither were there any differences between the two valve models in either position, in terms of symptomatic relief 5 years after surgery.
CONCLUSIONS: We found no differences in rates of complication or of symptomatic improvement between the Starr Edwards and St. Jude valve prostheses in either aortic or mitral position. Left ventricular function had such a marked effect on long-term survival that it overwhelmed any differences that might exist between different prosthetic designs. This confirms that historical comparisons are of limited value in deciding the respective merits of heart valve prostheses. The most reliable method of assessing surgical procedures is through prospective controlled trials.
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