When a doctor listens to the heart of a person with a heart murmur, they may hear a whooshing, swishing, humming, or rasping sound. This is due to rapid, turbulent blood flow through the heart.

Sometimes, a murmur sounds like a humming sound, which can be faint or loud. It might be temporary or persistent. Heart murmurs may be present at birth or develop later in life during pregnancy, ...

Is a childhood heart murmur something to worry about? Not necessarily, says Dr. Angelo S. Milazzo, a pediatric cardiologist and medical director of Duke Children's Consultative Services of Raleigh. A ...