In a healthy heart, the blood flows smoothly, and the valves are quiet except for that closing snap. However, sometimes doctors hear extra sounds.
S1 occurs at the . It is not a single event but a complex of high-frequency vibrations caused by the sudden closure of the atrioventricular (AV) valves – the mitral valve (left side) and tricuspid valve (right side). what is the lub dub sound
Your heart’s two lower chambers (ventricles) have just filled with blood and are starting to contract to pump that blood out to the body and lungs. In a healthy heart, the blood flows smoothly,
The first sound, referred to by doctors as , is the "lub." It is typically lower in pitch and slightly longer than the second sound. In a healthy heart