Multiple choice

Which among the following statements regarding the heart sounds is INCORRECT?

  1. The third heart sound is pathological in children, but physiologic in adults.

  2. The third sound is a result of vibration of ventricular wall and the leaflets of the opened AV valves after rapid inflow of blood.

  3. Turbulent blood flow is a result of stenotic (narrowed) valves or blood vessels.

  4. Heart murmurs are pathological noises that results from abnormal blood flow in the heart or blood vessels.

  5. Heart sounds are a result of beating heart and resultant blood flow.
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A Correct answer
Explanation

Third heart sound is physiologic in children but pathological in adults. The four heart sound is a result of the atrial systole and vibration of the AV valves, due to blood rush during atrial systole. It is inaudible neither in adults nor in children.

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