Problem: Pulmonary Valve Stenosis
What is pulmonary valve stenosis?
肺动脉瓣狭窄, also called PS, is caused by a narrowing of the pulmonary valve opening. PS restricts blood flow from the lower right chamber (ventricle) to the pulmonary arteries, which deliver blood to the lungs. It’s most commonly the result of a congenital heart defect. However, rarely PS can develop as a result of infections such as rheumatic fever (PDF)(link opens in new window) or carcinoid syndrome.
Watch a valve stenosis animation.
Who's at risk for pulmonary stenosis?
肺动脉瓣狭窄, which is rare among adults, is usually caused by a birth defect, also called a congenital heart defect. Moderate to severe PS is most often diagnosed during childhood due to the loud heart murmur associated with the condition.
What are the symptoms?
If PS is mild, there probably won't be any noticeable symptoms. If it's moderate or severe, you may experience some of the following:
- 心杂音
- Low tolerance for exercise
- 乏力
- 晕倒
- 呼吸急促（气促）
- Chest pain or palpitations
What are the treatments 和 probable outcomes?
Treatment is needed when the pressure in the right ventricle is high (whether or not there are symptoms). High pressure in the ventricle can lead to enlargement of the heart 和 心脏衰竭.
Ongoing follow-up care
People with mild pulmonary stenosis can often maintain heart function without getting worse. However, depending on the severity of the stenosis, the valve may be 修理 or 取代 by surgery, or by a minimally invasive procedure.
