A heart murmur is a swishing sound that blood makes as it moves through the heart. In most cases, this abnormality is harmless, and murmurs can come and go throughout childhood.
A heart murmur is a swishing sound that blood makes as it moves through the heart. A heart murmur may mean that there's an abnormality of the heart or valve structure. In most cases, it is completely harmless and a normal finding. Read on to learn more.