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Tetralogy of Fallot Lesson

Virtual Auscultation

patient torso with stethoscope chestpiece

patient position during auscultation
The patient's position is supine.

Lesson

This lesson presents Tetralogy of Fallot, which is a congenital condition often called Blue Baby Syndrome. It is characterized by four abnormalities: - pulmonic stenosis - increased thickening of the right ventricle - a ventricular septal defect - overriding aorta S1 and S2 are normal and unsplit. There is an aortic ejection click in systole. A diamond shaped murmur following the click and ending well before the second heart sound. In the cardiac animation video, observe the turbulent flow from the right ventricle into the pulmonary artery across the stenotic pulmonic valve and turbulent flow from the left ventricle to the right ventricle (the ventricular septal defect). The right ventricular wall is thickened. If you listen at the tricuspid position, you are hearing the ventricular septal defect. If you listen at the pulmonic area, you are hearing the pulmonic stenosis. Both create diamond-shaped systolic murmurs.

Waveform




Heart Sounds Video

Observe turbulent flow from the right ventricle into the pulmonary artery across the stenotic pulmonic valve and turbulent flow from the left ventricle to the right ventricle (the ventricular septal defect). The right ventricular wall is thickened.


Authors and Sources

Authors and Reviewers

Sources

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