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Aortic Regurgitation
source: Merck Manual
year: 2016
authors: Guy P. Armstrong
summary/abstract: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. Signs include widened pulse pressure and an early diastolic murmur. Diagnosis is by physical examination and echocardiography. Treatment is surgical aortic valve replacement or repair. Percutaneous valve replacement is being evaluated.
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