3 years old. Systolic murmur.
Which alterations do you recognize?
A – Hypertrophic cardiomyopathy
B – Aortic valve stenosis
C – Subaortic membrane
D – Supravalvular mitral membrane
Right answer is C: Subaortic membrane
Subaortic membrane is a rare disorder seen in infants. In most cases, there is a membrane (usually muscular) just below the aortic valve, which causes a fixed obstruction to the blood flow across the left ventricular outflow tract.
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