Related Experiment Videos
Long-term relative survival after primary heart valve replacement
E Ståhle1, P Kvidal, S O Nyström
1Department of Thoracic and Cardiovascular Surgery, University Hospital, Uppsala, Sweden.
Summary
Primary heart valve replacement survival is influenced by factors like age and symptoms. Patients over 70 or with mild symptoms show survival rates similar to the general population.
Area of Science:
- Cardiovascular Surgery
- Outcomes Research
Background:
- Optimal timing for primary heart valve replacement remains a critical clinical question.
- Understanding long-term survival and excess mortality post-valve replacement is essential for patient management.
Purpose of the Study:
- To analyze early and late survival after primary heart valve replacement.
- To evaluate excess mortality in heart valve replacement patients compared to the general population.
Main Methods:
- Survival analysis of 2365 patients undergoing first-time heart valve replacement.
- Comparison of observed survival with expected survival from the Swedish general population, stratified by demographics and time.
- Utilized Cox proportional hazards model for multivariate analysis of late survival factors.
Main Results:
- Early mortality rates varied: 5.9% (aortic), 10.4% (mitral), 10.6% (combined).
- 10-year relative survival rates (excluding early deaths) were 84% (aortic), 68.5% (mitral), and 80.9% (combined).
- Factors influencing late survival included concomitant coronary artery bypass grafting (CABG), NYHA class, atrial fibrillation, aortic regurgitation, and age.
Conclusions:
- Relative survival rates offer a different perspective on subgroup differences compared to observed rates.
- Patients aged >= 70 or with mild/no symptoms undergoing aortic or mitral valve replacement demonstrated survival comparable to the general Swedish population for extended periods.