Blood flowing through the heart is usually silent. It is like standing near a river that runs smoothly. You probably will not hear the water moving, know how big the river is or how fast the water moves. A murmur is blood flow that you can hear, just like the rushing water you hear when a river suddenly moves through rapids or over a waterfall. When you have a heart murmur, turbulent blood flow in or near the heart creates extra heart sounds, which can be heard with a stethoscope.
Learn more about heart murmurs by watching this informative video.
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