Aortic Regurgitation Heart Sound

E-VEDA 8

Aortic regurgitation (AR) is incompetency of the aortic valve causing backflow from the aorta into the left ventricle during diastole. Causes include valvular degeneration and aortic root dilation (with or without a bicuspid valve), rheumatic fever, endocarditis, myxomatous degeneration, aortic root dissection, and connective tissue (eg, Marfan syndrome) or rheumatologic disorders. Symptoms include exertional dyspnea, orthopnea, paroxysmal nocturnal dyspnea, palpitations, and chest pain.