Mitral Stenosis - Moderate Auscultation Reference

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heart lung sounds waveform patient normal speed
heart lung sounds waveform patient half speed
heart lung sounds waveform synthetic

Lesson

For heart sounds listen to the synthetic sound while reviewing this lesson.

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 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.

The waveform(s) seen above are a chart of sound amplitude (loudness) on the vertical axis against time on the horizontal axis.


Listening Tips

A summary of the key aspects of this heart or lung sound.
S1: Increased intensity.
Diastole: Opening snap followed by diamond shaped, low pitched murmur.

Auscultation Method

maneuver
The recommended patient position is supine left side down
torso
For this sound, use stethoscope's bell The recommended auscultation position for the stethoscope is mitral



Relevant Courses

If you wish to review a complete mobile concerning Mitral Stenosis - Moderate Auscultation Reference and related heart sounds, the modules(s) listed below may be useful. Each lesson includes text that explains the auscultatory sound and its clinical significance. The lesson also includes an audio track for playback. A waveform provides a great way to visualize the sounds. Finally, we also include an animation video. For heart sounds, the video illustrates heart muscle and valve movements along with blood flow. For lung sounds, the primary source of the sounds can be seen. Each module also includes a quiz.

Mitral Stenosis - Moderate Auscultation Reference







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