Medically reviewed by Jeffrey S. Lander, MD The first heart sound, or S1, is the "lub" of a normal heartbeat. It's a ...

Medically reviewed by Rafle Fernandez, MD A third heart sound, or S3, is a low-frequency, extra heart sound that may be heard ...

Sudden cardiac arrest and death occur among competitive and recreational athletes across the entire spectrum of age, sex, and ...

The global electrophysiology market is expected to grow significantly, reaching an estimated value of USD 9,078.4 million by ...