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A DOUBLE DOSE OF AORTIC STENOSIS: AN UNUSUAL CASE
André L Antunes1, José Almeida2, Luís Leite3
1Cardiothoracic Surgery Department, Coimbra University Hospital, Coimbra, Portugal; Faculty of Medicine, University of Coimbra, Coimbra, Portugal.
Supravalvular aortic stenosis, a rare congenital heart defect, obstructs blood flow above the aortic valve. Aortic insufficiency is a common associated abnormality, while combined valvular and supravalvular stenosis is exceptionally rare.
Area of Science:
- Cardiology
- Pediatric Cardiology
- Congenital Heart Disease
Background:
- Supravalvular aortic stenosis (SAS) is a rare congenital anomaly, accounting for less than 0.05% of all congenital heart defects.
- It is the least common form of left ventricular outflow tract obstruction, characterized by narrowing of the aortic lumen just above the aortic valve.
Observation:
- Clinical presentation typically occurs within the first few decades of life.
- In most instances, the aortic valve leaflets themselves are morphologically normal.
- Aortic insufficiency is frequently observed, stemming from elevated systolic pressure near the sinotubular junction.
Findings:
- The study highlights the rarity of supravalvular aortic stenosis.
- Aortic insufficiency is noted as a common associated abnormality.
- Concomitant valvular and supravalvular aortic stenosis is exceedingly uncommon, with very few documented cases.
Implications:
- Understanding the distinct features of SAS is crucial for accurate diagnosis and management.
- Recognizing associated abnormalities like aortic insufficiency aids in comprehensive patient care.
- Further research into the rare combination of valvular and supravalvular stenosis may elucidate underlying mechanisms and inform treatment strategies.
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