What is Pulmonary Stenosis?
Pulmonary stenosis is when the valve between the heart and lungs is too tight. This valve helps blood move from the heart to the lungs. If it’s narrow, blood flow is blocked—putting extra strain on the heart and potentially increasing the risk of heart failure.
Most people are born with this problem. It’s a congenital heart defect. It can range from mild to severe.
What Causes It?
Most cases start before birth. The valve doesn’t form right. Rarely, it happens later from injury or infection.
You might hear about it in babies. This is called pulmonary stenosis in newborns. But some don’t find out until adulthood.
Common Symptoms
Mild cases may have no symptoms. In others, the heart can’t pump blood well. That causes problems.
Symptoms of pulmonary stenosis:
A doctor may hear a murmur during a checkup. That often leads to testing.

How It’s Found
Doctors use a few tests to check the valve. These show how tight it is and how well the heart is working.
Tests may include:
These help decide if you need treatment now or just follow-up care.
This is where BaleDoneen can help.
We check for hidden risks and valve problems early. Our tests and team help you avoid future heart issues. If you’ve been told you have a murmur or valve change, we can help guide your care.
Types of Pulmonary Stenosis
There are different types based on where the valve is tight:
- At the valve: pulmonary valve stenosis
- Below the valve
- Above the valve
- In the lung branches
Your doctor will tell you which kind you have.
How It’s Treated
Treatment for pulmonary stenosis depends on how tight the valve is.
Options include:
Most people do well after care. Many return to daily life with no limits.
What to Expect Long-Term
Pulmonary stenosis life expectancy is good if the problem is treated. Mild pulmonary stenosis in adults may never need treatment. But follow-up is still important.








