Then later in diastole, as blood flows systemically through the arterial system, the pressure in the aortic arch decreases, and as the pressure against the aortic valve decreases. Please lessen to the sound file on decrescendo aortic regurgitation. Click on the sound file below. Aortic Regurgitation Sound File. This type of murmur is best heard during physical examination at the right side of the sternum at the 2nd intercostal space, with the diaphragm of the stethoscope.
Aortic regurgitation is characterized as producing a blowing type of murmur sound.
The blowing sound created by this murmur is due to the increase in fluid velocity that occurs as blood is forced to pass the incompetent valve leaflets. A decrescendo murmur is a murmur the starts out with high intensity and decreases over time between the closure of either S2 to S1 or S1 to S2.