Question

All of the following heart sounds are all indicated of heart disease except:

a. Mitral regurgitation
b. Mitral stenosis
c. Aortic regurgitation
d. S2

Answer 1

S2 is the normal heart sound made by the closure of the semilunar valves and is not indicative of heart disease, whereas mitral regurgitation, mitral stenosis, and aortic regurgitation are abnormal heart sounds that can suggest heart disease.

Step-by-step explanation:

The question is asking which of the listed heart sounds is not indicative of heart disease. The answer is S2, which represents the sound made by the closure of the semilunar valves (aortic and pulmonary valves) during ventricular diastole and is a normal sound in a healthy heart. Mitral regurgitation, mitral stenosis, and aortic regurgitation are all abnormal heart sounds that may indicate heart disease. The first heart sound, S1, corresponds to the closure of atrioventricular valves (mitral and tricuspid valves) during ventricular systole. Therefore, out of the options provided, only S2 is not indicative of heart disease.