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Long-term results of valve replacement in children suffering from rheumatic heart disease
Insights
Valve replacement surgery in children with severe rheumatic heart disease significantly improves heart function and quality of life. This intervention offers a favorable outcome for pediatric patients with advanced valvular damage.
Area of Science:
- Pediatric Cardiology
- Cardiovascular Surgery
- Rheumatic Heart Disease
Background:
- Rheumatic heart disease (RHD) causes severe cardiac valve pathology in children, particularly in developing nations.
- Unlike developed countries, pediatric RHD often requires intervention beyond mitral stenosis treatment, including valve replacement for hemodynamic instability.
- Early-onset severe valvular disease necessitates surgical consideration in pediatric populations.
Purpose of the Study:
- To evaluate the efficacy of valve replacement surgery in children with severe RHD.
- To assess the long-term outcomes and hemodynamic improvements following cardiac valve replacement in pediatric patients.
- To compare surgical outcomes in developing countries with RHD management in developed nations.
Main Methods:
- Retrospective analysis of 33 children (aged 5-16 years) with severe RHD (NYHA Grade III/IV) undergoing valve replacement.
- Surgical procedures included single, double, or triple valve replacements.
- Patient outcomes were assessed up to 8 years post-surgery, including functional classification and hemodynamic studies.
Main Results:
- Twenty-seven children (82%) experienced significant functional improvement, with 20 reaching NYHA Grade I (normal life) and 3 reaching Grade II.
- Postoperative catheterization confirmed marked hemodynamic improvement, with reduced cardiothoracic ratios.
- Hospital and late mortality rates were observed, with a follow-up period extending up to 8 years.
Conclusions:
- Cardiac valve replacement favorably modifies the natural history of RHD in children with severely damaged valves.
- Valve replacement surgery is a viable and effective treatment for improving hemodynamics and functional status in pediatric RHD patients.
- The study highlights the critical need for surgical intervention in severe pediatric RHD cases, especially in resource-limited settings.
Abstract:
Severe pathological changes in the cardiac valves are often observed at an early age in children in the developing countries. Mitral stenosis is best managed by closed commissurotomy. However, mitral insufficiency, aortic insufficiency and tricuspid lesions may lead to life-threatening hemodynamic effects which necessitate valve replacement. This differs from experience in the developed countries where surgery for rheumatic valvular disease is limited to the adult. Our experience includes 33 children aged 5 to 16 years. Twenty-four children underwent single valve replacement, eight had two valves replaced and one had triple valve replacement. All were classified Grade IV or late Grade III (New York Heart Association). Four children had to be operated on despite known rheumatic activity. Two children in shock and pulmonary edema underwent emergency operation. There were two hospital deaths and eight late deaths. Patients have been followed for up to eight years. Twenty children are now classified as Grade I and lead completely normal lives and the remaining three are classified as Grade II. Postoperative catheterization studies have documented improvement from severe preoperative hemodynamic changes to near normal values at rest after operation. The cardiothoracic ratio has decreased impressively. We conclude that the natural history of rheumatic heart disease in children with severely damaged heart valves is favorably modified by valve replacement.