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Supravalvular congenital mitral stenosis
Fernando Moraes1, Cleuza Lapa, Cristina Ventura
1Instituto do Coração de Pernambuco, Real Hospital Português, Recife, PE.
Abstract:
Congenital supravalvular mitral stenosis is a rare malformation characterized by the presence of a shelf-like fibrous membrane, with 1 or 2 small orifices, covering and obstructing the mitral valve. The membrane is positioned closely to the mitral valve (and sometimes it is attached to it); therefore, a preoperative diagnosis is inevitably difficult, even with the use of biplane echocardiography. Two patients with supravalvular mitral stenosis aged 3 years and 3 months are described. In 1 patient, a preoperative diagnosis was made, and both successfully underwent correction.
Insights
Congenital supravalvular mitral stenosis, a rare heart defect, involves a membrane obstructing the mitral valve. Early diagnosis and surgical correction offer successful outcomes for affected children.
Area of Science:
- Cardiology
- Pediatric Cardiology
- Congenital Heart Disease
Background:
- Congenital supravalvular mitral stenosis is a rare cardiac malformation.
- It presents as a shelf-like fibrous membrane obstructing the mitral valve with small orifices.
- Preoperative diagnosis is challenging due to the membrane's proximity to the mitral valve.
Observation:
- The study describes two pediatric patients diagnosed with congenital supravalvular mitral stenosis.
- Both patients were 3 years and 3 months old at the time of presentation.
- One patient received a preoperative diagnosis, facilitating timely intervention.
Findings:
- The fibrous membrane characteristic of supravalvular mitral stenosis can be difficult to diagnose preoperatively.
- Despite diagnostic challenges, surgical correction can be successfully performed.
- Early diagnosis in one case led to successful surgical intervention.
Implications:
- Accurate and timely diagnosis of congenital supravalvular mitral stenosis is crucial for effective treatment.
- Surgical correction is a viable option for managing this rare condition in children.
- Further research may improve diagnostic accuracy and treatment strategies for supravalvular mitral stenosis.