Question

While auscultating heart sounds, the nurse hears 'lub-dub-dee' and recognizes that this would be characterized as which heart sound?

1) S1
2) S2
3) S3
4) S4

Answer 1

In a normal, healthy heart, there are only two audible heart sounds: S₁ and S₂. S₁ is the first heart sound and S₂ is the second heart sound. correct option is 2.

Step-by-step explanation:

In a normal, healthy heart, there are only two audible heart sounds: S₁ and S₂. S₁ is the sound created by the closing of the atrioventricular valves during ventricular contraction and is normally described as a "lub," or first heart sound. The second heart sound, S₂, is the sound of the closing of the semilunar valves during ventricular diastole and is described as a "dub."