You know the sound of your heartbeat: lub-dub, lub-dub. In some people, there's an extra noise that the blood makes as it flows through the heart. It sounds sort of like the noise of water flowing through a hose. This sound is called a murmur. A heart murmur is a swishing sound heard when there is turbulent or abnormal blood flow across the heart valve. Learn about Causes of Heart Murmur, symptoms, treatment, facts, Best Foods for Heart, and more.
