The Rhythm of Being: A “Lub Lub Dub” Story
The standard heart sound is a binary "ding-dong" or "lub-dub." The "lub-lub-dub" introduces a distinct . lub lub dub heart sound
The first sound, caused by the closing of the mitral and tricuspid valves . It marks the beginning of systole , when the heart's ventricles contract to pump blood out. The Rhythm of Being: A “Lub Lub Dub”
This is the second heart sound, marking the beginning of ventricular relaxation (diastole). It is caused by the closing of the aortic and pulmonary valves . What is the "Lub-Lub-Dub" (S3 Gallop)? lub lub dub heart sound
In a healthy heart, two main sounds are audible through a stethoscope: