How do we explain the appearance of De Musset's sign in aortic regurgitation?THanks
In aortic regurgitation, blood flows back from the aorta into the left ventricle in diastole To maintain cardiac output the stroke volume of the left ventricle has to increase This results in a large to and fro movement of blood from the left venticle into the systemic circulation and back This to and fro movement results in the peripheral signs that occur in aortic regurgitation They are De Musset's sign - head nodding in time with the hearbeat Muller's sign - pulsation of the uvula Quincke's - pulsation of the vessels in the nail bed Corrigan's sign - carotid pulsation Pistol shot femoral or femoral thud- snapping open of the femoral artery in systole Duroziez's murmur - diastolic bruit over the femoral artery
