The S3 heart sound is essentially blood rushing into a specific chamber. Learn how this sound correlates to congestive heart ...

during the heart cycle. Two of them, the classic first and second sounds, are heard on any living person. A third heart sound may be heard during early diastole in many young persons after the ...

The S1 heart sound is two of your heart valves closing. It's the first sound doctors can hear with a stethoscope. Learn what ...