Mechanical S2
A mechanical S2 is generated by closure of a prosthetic heart valve (usually in the aortic position). It has a “metallic” quality. Mechanical aortic valves can often be heard with the naked ear.
Patient 1:
This patient has mechanical aortic and mitral valves. Notice the “metallic” sounding S1 and S2.
Mechanical S2
Annotated
Patient 2:
This patient has a mechanical aortic valve. Notice the “metallic” sounding S2.
Mechanical S2
Annotated
Patient 3:
This patient has a mechanical aortic valve. Notice the “metallic” sounding S2. Also notice that S1 is split.
Mechanical S2
Annotated
Patient 4:
This patient has mechanical aortic and mitral valves. Notice that both S1 and S2 are split.
Mechanical S2
Annotated
Patient 5:
This patient has a mechanical aortic valve. Notice the “metallic” sounding S2. Also notice that S1 is split.
Mechanical S2
Annotated
Patient 6:
This patient has a mechanical aortic valve. Notice the “metallic” sounding S2.
Mechanical S2
Patient 7:
This patient has a split S1 (best heard over the left lower sternal border and apex), a mechanical S2, and a split S2 (best heard over the pulmonic area).
Mechanical S2
Annotated
Mechanical S2
Annotated
Mechanical S2
Annotated
Patient 8:
This is a young man with a mechanical aortic valve related to a history of severe aortic regurgitation from a bicuspid aortic valve.