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Aortic valve stenosis is a crescendo/decrescendo systolic murmur. It is best heard at the right upper sternal border (aortic area). 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.
Aortic stenosis is most commonly caused by age-related progressive calcific aortic valve disease (CAVD) (>50% of cases), with a mean age of 65 to 70 years. CAVD is the build-up of calcium on the cusps of the valve, and this calcification causes hardening and stenosis of the valve. [22]
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). In aortic stenosis, heaving apical impulse is present. The distinguishing feature between these two causes is that bicuspid AS has little or no radiation.
Generally, this is a very rarely heard murmur, even though aortic valve regurgitation is not so rare. Aortic regurgitation, though obvious using echocardiography visualization, usually does not produce an audible murmur. [citation needed] Stenosis of the mitral valve, if severe, also rarely produces an audible, low frequency soft rumbling ...
The presence of a murmur at the apex can be misinterpreted as mitral regurgitation. However, the apical murmur of the Gallavardin phenomenon does not radiate to the left axilla and is accentuated by a slowing of the heart rate (such as a compensatory pause after a premature beat) whereas the mitral regurgitation murmur does not change. [2]
Pulmonary stenosis, atrial septal defect: Venous hum: Infraclavicular throughout the cardiac cycle (right side > left side), diminishes with jugular vein palpation or neck turning PDA: Supraclavicular arterial bruit (Systemic Flow Murmur) Above clavicles: aortic stenosis, bicuspid aortic valve: Peripheral pulmonary stenosis (Pulmonary flow murmur)
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