Submit request or call to make an appointment.
Subaortic stenosis is a blockage or narrowing at the outlet of the left ventricle, just below the aortic valve. That makes it hard for the left ventricle to pump blood to the body.
Subaortic stenosis can cause two main problems for the heart:
The specialists at Norton Children’s Heart Institute, affiliated with the UofL School of Medicine — the leading providers of pediatric heart care in Louisville and Southern Indiana — can help your child with subaortic stenosis.
The board-certified and fellowship-trained specialists at Norton Children’s Heart Institute have the skills and experience to provide a pinpoint diagnosis and develop a customized treatment plan for you and your child.
Norton Children’s has a network of outreach diagnostic and treatment services throughout Kentucky and Southern Indiana.
Doctors sometimes hear a heart murmur — a specific “whooshing” sound — because of the uneven blood flow through the narrowed area. More tests might reveal subaortic stenosis.
When the narrowing is severe, the child may have these symptoms:
We don’t know what causes subaortic stenosis in children. A family history of congenital heart defects might be a factor, but little is known about a specific cause.
A pediatric cardiologist will perform tests to diagnose subaortic stenosis:
Subaortic stenosis in children is treated with open heart surgery that involves removing the subaortic membrane.
It’s possible that some of the membrane may be left behind, although it is unusual for that to cause any blockage. Most patients who undergo a subaortic resection go home three or four days after surgery.