The first heart sound is usually slightly louder than the second when auscultating at the mitral valve (apex).
The first heart sound is much louder than the second heart sound in this case. A thickened but still movable mitral valve is generating this particular sound. Look at the anatomy video to see the thickened mitral valve leaflets.
Loud first heart sounds can also be observed in patients with thin chests.
Listen
The patient's position is supine.
Visualize
Observe
Notice the thickened mitral valve leaflets.
The first heart sound is much louder than the second heart sound. This can be produced by a thickened, but still mobile, mitral valve.
