Condition Basics
What is mitral valve stenosis?
Mitral valve stenosis is a heart problem in which the mitral valve becomes stiff and doesn't open as wide as it should. This forces your heart to work harder to pump blood through the valve, which can weaken the heart and cause other problems.
What causes it?
Nearly all cases of mitral valve stenosis are caused by rheumatic fever. This fever results from an untreated strep infection, often strep throat. But many people who have mitral valve stenosis don't realize that they had rheumatic fever. Less common causes include other health conditions and calcium buildup on the mitral valve.
What are the symptoms?
Symptoms may not appear until you've had mitral valve stenosis for many years. An early symptom is shortness of breath when you're active. Later in the disease, you may feel short of breath even when you're resting. You may also feel tired and weak.
How is it diagnosed?
If you have mitral valve stenosis, your doctor may hear a heart murmur during a routine checkup. A test called an echocardiogram is used to find out for sure. You may also have an electrocardiogram, a chest X-ray, or other tests.
How is mitral valve stenosis treated?
Your doctor will check your heart regularly. Your doctor will recommend a heart-healthy lifestyle. You may take medicine to help treat or prevent other problems that can happen. If you have symptoms or severe stenosis, you may have a procedure to stretch the valve open or surgery to repair or replace the valve.
