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It sometimes radiates to the carotid arteries. In mild aortic stenosis, the crescendo-decrescendo is early peaking. Whereas in severe aortic stenosis, the crescendo is late-peaking. In severe cases, obliteration of the S2 heart sound may occur. Stenosis of Bicuspid aortic valve is like the aortic valve stenosis heart murmur. But, one may hear a ...
The second heart sound, or S 2, forms the "dub" of "lub-dub" and is composed of components A 2 (aortic valve closure) and P 2 (pulmonary valve closure). Normally A 2 precedes P 2 especially during inspiration where a split of S 2 can be heard.
The second heart sound (A 2) tends to become decreased and softer as the aortic stenosis becomes more severe. [24] This is a result of the increasing calcification of the valve preventing it from "snapping" shut and producing a sharp, loud sound.
With newer, non-invasive imaging techniques, the origin of other, so-called adventitial sounds or heart clicks has been appreciated. These are short, high-pitched sounds. [citation needed] The mitral valve in cases of mitral stenosis may open with an opening snap [1] [2] on the beginning of diastole.
It is described as the dissociation between the noisy and musical components of the systolic murmur heard in aortic stenosis. The harsh noisy component is best heard at the upper right sternal border radiating to the neck due to the high velocity jet in the ascending aorta .
**Valvular aortic stenosis can produce a harsh, or even a musical murmur over the right second intercostal space which radiates into the neck over the two carotid arteries. The most common cause of AS (Aortic stenosis) is calcified valves due to aging. The second most common cause is congenital bicuspid aortic valves (normal valve is tricuspid).
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