Lincoln Sign in Aortic Regurgitation Lincoln sign is the medical sign consisting of excessive popliteal artery pulsation due to hemodynamic effects of aortic regurgitation. This sign is associated with Marfan syndrome, in which aortic root dilation and aortic incompetence are common features. #Lincoln #Sign #Aortic #Regurgitation #Insufficiency #PhysicalExam #Video #clinical #cardiology
