A heart murmur is a sound that blood makes as it moves through the heart. It may be a sign of some problem in the heart or valve structure. But in most cases, a heart murmur is completely harmless and a normal finding. Sometimes they can be a sign of a more serious issue that needs more testing or treatment. Most children have a heart murmur at some time in their life. It may be the result of a short-term (acute) illness, such as an upper respiratory tract infection, dehydration, or anemia. These murmurs come and go during childhood. They don't affect the child’s health. As the child gets older, the murmurs go away on their own. These are called innocent or functional murmurs.
Home care
Innocent heart murmurs don't need special care or treatment.
Follow-up care
Follow up with your healthcare provider, or as advised. Getting regular checkups can allow your healthcare provider to monitor for anything unusual.
When to seek medical advice
Call your healthcare provider if any of the following occur:
In newborns and babies:
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Trouble feeding
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Doesn't gain weight normally
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Blue legs or feet
In children and teens:
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Tiredness or trouble exercising
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Trouble gaining weight
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Swelling of the legs
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Blue legs or feet
Call 911
Call
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Rapid or difficulty breathing or blue lips
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Chest pains
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Passing out or loss of consciousness
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Complains that their heart is beating fast
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