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Heart murmurs are sounds — such as whooshing or swishing — made by rapid, choppy (turbulent) blood flow through the heart. The sounds can be heard with a device called a stethoscope. A typical heartbeat makes two sounds like "lubb-dupp" (sometimes described as "lub-DUP") when the heart valves are closing.
Heart murmurs can be present at birth (congenital) or develop later in life (acquired).
Some heart murmurs are harmless (innocent). An innocent hea...

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Harmless (innocent) heart murmurs usually don't cause any other symptoms.
Symptoms of worrisome heart murmurs depend on the cause. Heart murmur symptoms may include:

A heart murmur is caused by rapid, choppy (turbulent) blood flow through the heart. A heart murmur may happen:
Things that might change blood flow and cause an innocent heart murmur include:
Innocent heart murmurs may go away over time. Sometimes, heart murmurs continue for life without causing serious health problems. Worrisome heart murmurs In children, worrisome murmurs are usually due to a problem with the heart's structure that's present at birth (congenital heart defect)....

Innocent heart murmurs don't usually need treatment. If a fever or an overactive thyroid (hyperthyroidism) causes a murmur, the murmur usually goes away once that condition is treated.
Treatment for a worrisome heart murmur depends on cause. A worrisome heart murmur requires close monitoring by a health care provider. Medications or surgery may be needed. Medications Medications that might be used to treat heart conditions associated with murmurs include:...

There's no known prevention for heart murmurs. But healthy lifestyle changes can improve heart health and prevent some conditions linked to murmurs in adults. Many childhood heart murmurs go away on their own as children grow.

For informational purposes only and not a substitute for professional medical advice, diagnosis, or treatment.

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