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 ...

An S4 heart sound is a low-pitched sound that occurs toward the end of the diastole. In some cases, an underlying health condition, often one affecting the left ventricle, may cause the S4 heart sound ...

Heart sounds are produced from a specific cardiac event such as closure of a valve or tensing of a chordae tendineae. Many pathologic cardiac conditions can be diagnosed by auscultation of the heart ...

WASHINGTON — As deals struck by health care behemoths go, this was one of the stranger ones. On one side, you had a medical device giant, with a phalanx of PR professionals carefully guarding the ...

I heard the sound in my sleep. At first it was a part of my dream, but as I started to wake up, I realized it was actually coming from somewhere in the house. I listened closely trying to place it and ...

One of the most common sounds in the modern world is the beep. From microwaves and cellphones to computers and backing-up trucks, this high-pitched alert pings us from every direction. But how is it ...