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[Hemodynamics changes in children and adolescents with mitral valve replacement]
Archivos Del Instituto De Cardiologia De Mexico
|September 1, 1976
Summary
Mitral valve replacement in children and adolescents significantly improves hemodynamics, even with severe pulmonary hypertension. Starr-Edwards valves showed consistently beneficial results in this patient group.
Area of Science:
- Cardiovascular Surgery
- Pediatric Cardiology
- Biomedical Engineering
Context:
- Analysis of 106 pediatric and adolescent patients undergoing mitral valve replacement between 1964 and 1974.
- Focus on pre- and post-operative hemodynamic assessments at variable intervals (9 days to 48 months post-surgery).
Purpose:
- To evaluate the long-term hemodynamic changes following mitral valve replacement in pediatric and adolescent populations.
- To assess the efficacy of different valve types, including Starr-Edwards prostheses, in improving hemodynamic parameters.
- To determine if severe pulmonary hypertension and elevated pulmonary resistances are contraindications for surgical intervention.
Summary:
- Mitral valve replacement led to significant reductions in central venous pressure (CVP), systolic pulmonary pressure (SPP), and total pulmonary resistances across all valve types.
- Starr-Edwards valves demonstrated consistently beneficial hemodynamic outcomes compared to other valve types.
- Radiological and electrocardiographic studies are valuable for long-term evaluation, while hemodynamic and clinical improvements correlate closely.
Impact:
- Establishes that severe pulmonary hypertension and elevated pulmonary resistances are not contraindications for mitral valve replacement in pediatric and adolescent patients.
- Highlights the efficacy of valve replacement surgery when indications are appropriate and patient management is optimized.
- Provides evidence for the sustained hemodynamic benefits of mitral valve prostheses in young individuals.