Mitral Regurgitation and Aortic Regurgitation Auscultation Reference

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heart lung sounds waveform synthetic

Lesson

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

This is an auscultation example of moderate regurgitation of both the aortic and mitral valves.

The first heart sound is minimally decreased due to minimal closure of the mitral valve leaflets in early systole. The second heart sound is normal.

There is a rectangular murmur which takes up most of systole and a decrescendo murmur which takes up most of diastole. Both murmurs are of moderate intensity.

The combination of the two murmurs creates a to-and-fro sound character.

In the anatomy tab you see an enlarged left atrium and left ventricle.

You see regurgitant turbulent flow into the left atrium from the left ventricle (the systolic murmur) and regurgitant turbulent flow from the aorta into the left ventricular outflow tract (the diastolic murmur).

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: Minimally reduced intensity.
Systole: Rectangular murmur, moderate intensity.
Diastole: Decrescendo murmur, moderate intensity.

Auscultation Method

maneuver
The recommended patient position is sitting leaning forward
torso
For this sound, use stethoscope's diaphragm The recommended auscultation position for the stethoscope is mitral



Relevant Courses

If you wish to review a complete mobile concerning Mitral Regurgitation and Aortic Regurgitation 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 Regurgitation and Aortic Regurgitation Auscultation Reference







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