Ventricular Septal Defect Auscultation Reference

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 an ventricular septal defect as heard at the tricuspid position.

Ventricular Septal Defect is a congenital condition associated with abnormal blood flow between the left ventricle and the right ventricle.

During fetal development a wall develops creating a right and left ventricle. In a percentage of individuals a defect in the wall persists allowing blood flow from the left ventricle into the right ventricle. This condition is known as a ventricular septal defect.

The first heart sound is normal. The second heart sound is unsplit.

There is a third heart sound followed by a short diamond shaped diastolic murmur.

A medium pitched murmur fills all of systole.

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

You see turbulent blood flow from the left ventricle into the right ventricle through the up portion of the septum (the systolic murmur).

There is further turbulent flow into the left ventricle from the left atrium causing the diastolic murmur. This is caused by VSD induced increased blood flow across the mitral valve.

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.
Diastole: S3 in patient recordings. Simulated sound includes a brief murmur.

Auscultation Method

maneuver
The recommended patient position is supine
torso
For this sound, use stethoscope's diaphragm The recommended auscultation position for the stethoscope is tricuspid



Relevant Courses

If you wish to review a complete mobile concerning Ventricular Septal Defect 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.

Ventricular Septal Defect Auscultation Reference







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