When someone opens the door and enters a hospital room, wearing a stethoscope is a telltale sign that they're a clinician.

S1 is the first heart sound that doctors can hear using a stethoscope. The vibrations that occur when the mitral and tricuspid valves in the heart close produce the S1 sound. There are two common ...

We may soon be able to diagnose cardiac problems at home using ordinary smartphones to record the sounds of our heart beating. An app that lets people record their heart sounds has been found to make ...