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A 40-year-old member asked:

What are the causes mitral stenosis ?

2 doctor answers5 doctors weighed in
Dr. Mark Stern
Cardiology 46 years experience
Rheumaic fever: Usually repeated strep infections as a child lead to rheumatic fever which can scar the heart and make the valve thickened and hard to open.
Dr. Liviu Klein
Cardiology 23 years experience
Infections: Most common cause, although rare these days in the westernized world, is rheumatic fever (due to strep infectipns) in young age, which leads to scarring of the valve over time with narrowing - stenosis. Other infections (endocarditis) can lead to mitral stenosis as well.

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A 48-year-old member asked:

How is it that mitral stenosis causes dyspnea?

2 doctor answers6 doctors weighed in
Dr. Calvin Weisberger
Cardiology 51 years experience
Mitral stenosis: Ms is like a door that doen't open enough to let the blood out of the lungs. This engorgemnt of the lungs causes increased work of breathing and decreased oxygen exchange.
A 40-year-old member asked:

Could you tell me why mitral stenosis causes dyspnea?

1 doctor answer1 doctor weighed in
Dr. Steven Neish
Pediatric Cardiology 38 years experience
Multiple causes: Dyspnea is difficult breathing. Ms causes this in multiple ways. Increased lung water (back up into the lungs.) dilated left atrium compressing the left main stem bronchus. Decreased cardiac output (and o2 delivery) leading to a sensation of needing to breathe harder. Atrial arrhythmias leading to decreased cardiac output and increased water in the lungs. Each person has variable contribution.
A 36-year-old member asked:

What is mitral stenosis?

3 doctor answers6 doctors weighed in
Dr. Alan Levine
Pediatrics 34 years experience
Narrowing : Mitral stenosis is a narrowing of the valve that controls the flow of blood from the left atrium to the left ventricle of the heart. This can have many causes and, depending upon the severity of the stenosis, may or may not cause symptoms. This must be followed, because the degree of stenosis can increase over time and require replacement.

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Last updated May 20, 2015
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