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Clinical comparison of 27 size sorin and medtronic mitral prostheses
Authors:V Kothari MS  AK Agarwal MS  SK Agarwal MCh  A Agarwal MD  AK Srivastava MCh.
Affiliation:(1) Department of Cardiovascular & Thoracic Surgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Raebareli Road, 226014 Lucknow, India;(2) Department of Cardiology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Raebareli Road, 226014 Lucknow, India;(3) Present address: Department of Cardiovascular & Thoracic Surgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Raebareli Road, 226014 Lucknow, India
Abstract:
Background  This study was aimed to evaluate the merit in clinical and hemodynamic performance of two commonly used tilting disc heart valve prostheses at our center. Methods  Between October 1994 and December 1997, 100 patients who received either Sorin Biomedica (n=50; group I) or Medtronic Hall (N=50; group II) 27 size mitral valve prostheses were included in the study. The two groups were similar with respect to age, sex, body surface area, preoperative rhythm, NYHA class, hemodynamic and operative parameters. Results  The overall early mortality in the entire series was 5.0%. It was not significantly different in the two groups. A cumulative follow-up of 99.83 patient year for group I and 123.83 patient year for group II, revealed late mortality of 6.23% and 6.38% respectively. The valve related events, acturial survival and echocardiographic assessment of trans-valvular gradient demonstrated no significant difference between the two groups. Conclusions  The results of this study 4 years following implantation indicate that the clinical and hemodynamic performance of 27 size Sorin Biomedica and Medtronic Hall were similar. Both the tilting prostheses were in conformity with small mitral annulus particularly in stenotic lesion and in those who had smaller body surface area. The choice of either prostheses entirely depended upon the surgeon’s preference which was linked to other factors such as experience, ease of insertion, availability and cost. Paper presented in the Annual Conference of Indian Association of Cardiovascular and Thoracic Surgeons at Mumbai, India on 8th March 2000.
Keywords:Mitral valve replacement  Heart valve surgery  Heart valve prosthesis
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