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Mitral Stenosis - Moderate

This is an example of moderate mitral stenosis which is most commonly due to rheumatic heart disease. The first heart sound is increased in intensity due to moderate thickening of the mitral valve leaflets. The second heart sound is normal and unsplit Systole is silent. There is an opening snap 75 milliseconds into diastole. As mitral stenosis becomes more severe, the opening snap will occur earlier in diastole. The opening snap is followed by a diamond shaped low frequency murmur. Use the bell of the stethoscope to hear this murmur. There is a second murmur in late diastole due to contraction of the left atrium. In the animation you can see the turbulent blood flow from the left atrium into the left ventricle. You can see the moderately thickened mitral valve leaflets and the moderately enlarged left atrium. The excursion of the mitral valve leaflets is moderately decreased.

Auscultation Sounds

auscultation sound from lesson
waveform

Patient Recording

patient heart or lung sound
Mitral Stenosis - Moderate

Patient Recording - Half Speed

patient heart or lung sound
Mitral Stenosis - Moderate

Position

Patient position
The patient's position should be supine left side down.

Listening Tips

S1:Increased intensity
Diastole:Opening snap followed by diamond shaped, low-pitched murmur

Waveform (Phonocardiogram)



Observe Cardiac Animation

In this animation observe the turbulent blood flow from the left atrium into the left ventricle. You can see the moderately thickened mitral valve leaflets and the moderately enlarged left atrium. The excursion of the mitral valve leaflets is moderately decreased.
Authors and Sources

Authors and Reviewers


Sources

Return to Reference Guide Index Page
Mitral Stenosis - Moderate | Lessons with Audio and Video | #97


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