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Myocarditis Lesson

Virtual Auscultation

patient torso with stethoscope chestpiece

patient position during auscultation
The patient's position is seated.

Lesson

This is a simulation of Myocarditis taken at the apex.

  • 1. The first heart sound is softer than normal because of decreased function of the left ventricle.
  • 2. The second heart sound is normal at the mitral area.
  • 3. There is a third heart sound caused by the failure of the left ventricle.
  • 4. A rectangular, medium-pitched murmur of mild mitral regurgitation is caused by the incomplete closure of the mitral valve leaflets.

In the animated anatomy video, observe the enlarged left ventricle with decreased vigor of contraction. Also notice the regurgitant turbulent flow from the left ventricle into the left atrium which generates the murmur.

Myocarditis is often the result of a viral infection of the myocardium.

Waveform




Heart Sounds Video

Play the animation, taking note of the enlarged left ventricle with decreased vigor of contraction. Observe the regurgitant turbulent flow from the left ventricle into the left atrium which is responsible for the murmur.


Authors and Sources

Authors and Reviewers

Sources

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