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Pulmonary hypertension
Gender differences in the long-term outcomes after valve replacement surgery
  1. A Kulik1,
  2. B-K Lam1,
  3. F D Rubens1,
  4. P J Hendry1,
  5. R G Masters1,
  6. W Goldstein1,
  7. P Bédard1,
  8. T G Mesana1,
  9. M Ruel1,2
  1. 1
    Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, Canada
  2. 2
    Department of Epidemiology, University of Ottawa, Ottawa, Ontario, Canada
  1. Dr Marc Ruel, University of Ottawa Heart Institute, 40 Ruskin Street, Suite 3403, Ottawa, Ontario, Canada K1Y 4W7; mruel{at}ottawaheart.ca

Abstract

Objective: To compare the long-term outcomes in women and men after valve replacement surgery.

Design: Observational study.

Setting: Postoperative aortic valve replacement (AVR) or mitral valve replacement (MVR).

Patients: 3118 patients (1261 women, 1857 men) who underwent AVR or MVR between 1976 and 2006 (2255 AVR, 863 MVR), with mean follow-up of 5.6 (4.5) years.

Main outcome measures: The independent effect of gender on the risk of long-term complications (reoperation, stroke and death) after valve replacement surgery using multivariate actuarial methods.

Results: After implantation of an aortic valve bioprosthesis, women had a significantly lower rate of reoperation compared to men (comorbidity-adjusted hazard ratio (HR) 0.4; 95% confidence intervals (CI) 0.2 to 0.9). In contrast, if an aortic mechanical prosthesis had been implanted, women were more at risk for late stroke compared to men (HR 1.7; CI 1.1 to 2.7). After adjustment for age and co-morbidities, women had significantly better long-term survival compared to men after bioprosthetic AVR (HR 0.5; CI 0.3 to 0.6), but there was no survival difference between genders after mechanical AVR. Trends existed towards better survival for women after bioprosthetic MVR (HR 0.6; CI 0.4 to 1.0) and mechanical MVR (HR 0.8; CI 0.5 to 1.1).

Conclusion: The long-term outcomes after valve replacement surgery differ between women and men. Although women have more late strokes after valve replacement, they undergo fewer reoperations and have better overall long-term survival compared to men.

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Footnotes

  • Competing interests: None.

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