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Patient 1 Patient 2

Cardiology Murmurs

Venous Hum

Often heard in children.
Etiology is thought to be compression of the internal jugular vein by the transverse process of the atlas.
The sound is continuous, loudest in diastole.
Best heard in the neck, in the anterior triangle, on the right side.
Louder when the patient is upright, inspires, or turns away from the stethoscope (to the left).
Quieter when lying down or by turning the head towards the stethoscope or with light pressure on the internal jugular vein.
It can also be heard in adults with high output states, and is of no clinical significance except that it can be mistaken for a PDA or AV fistula.

Patient 2

This is a young and healthy team volunteer who has a venous hum.

Venous Hum

Annotated