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A heart murmur is a sound made by blood moving through the chambers
and valves of the heart or through the blood vessels near the heart. The sounds
can be heard through a stethoscope.
Heart murmurs are common in infants and children and are harmless
in most cases. The murmurs usually are not a problem, require no treatment, and
go away on their own. Pregnancy, fever, and some types of anemia can also lead
to temporary heart murmurs. But some adults have harmless heart murmurs that do
not go away.
A heart murmur may sometimes mean there is a more serious problem
with the heart walls or heart valves, such as narrowing or leaking of a heart
valve (stenosis or regurgitation) or an infection of a heart valve
(endocarditis). These problems can cause blood to flow abnormally through the
heart valves or chambers, causing a murmur or other sound that the doctor can
hear with the stethoscope. These conditions require close monitoring and may
Current as of:
February 20, 2015
Rakesh K. Pai, MD, FACC - Cardiology, Electrophysiology & George Philippides, MD - Cardiology & E. Gregory Thompson, MD - Internal Medicine
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