Multiple choice

Which of the following heart sounds is also known as presystolic gallop?

  1. S1

  2. S2

  3. S3

  4. S4

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The rare fourth heart sound when audible in an adult is called a presystolic gallop or atrial gallop. This gallop is produced by the sound of blood being forced into a stiff/hypertrophic ventricle.