Definition Aortic insufficiency (AI) or regurgitation (AR) may be acute or chronic in nature. Infective endocarditis involving the aortic valve, trauma to the aortic valve and acute aortic dissection are well-described causes of acute AR. The etiologies of chronic AR include connective tissue diseases such as Marfan syndrome and Ehlers-Danlos syndrome, bicuspid aortic valve, and […]