A third heart sound, or S3, is a low-frequency ... It's best heard when a healthcare provider places the bell of their stethoscope (the small circular part) on a person's chest wall while they ...

The stethoscope has changed little ... through vessels and the mechanical sounds of the heart’s valves. Such sounds are best heard using the bell chest piece, which essentially uses the patient ...

A S3 heart sound should disappear when the diaphragm of the stethoscope is used and should be present while using the bell. The opposite is true for a split S2. Also, the S3 sound is heard best at ...

Precise, ERKA has redefined the term high-end stethoscope. The open bell side allows the physician ... thus ensuring an unmatched sound precision. The point of reference for the physicians.