Heart sounds are one tool providers use to assess heart health. Learn about systolic, diastolic, and S1 to S4 heart sounds in ...

Have you ever experienced lying down after a long day and being kept awake by the unsettling sound of a loudly beating heart ... annoying bass that's "just too loud" and interferes with normal ...

Sound familiar? If you listen to your heart beat, you'll hear two sounds. These "lub" and "DUB" sounds are made by the heart valves as they open and close. See the valves in action.