Ventricular Septal Defect Page

Ventricular Septal Defect Heart Sounds

Below there is a simulated 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 addition to the simulated heart sound we have included a recording of a patient.

Supine

Diaphragm

Patient Normal Speed

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Patient Half Speed

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Simulated Full Speed

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