HEART SOUND

HEART SOUND

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Classical representation

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Aortic regurgitation (AR) The murmur of aortic regurgitation is a soft, high-pitched, early diastolic decrescendo murmur usually heard best at the third intercostal space on the left (Erb's point) at end expiration while the patient is sitting up and leaning forward. If the aortic regurgitation is due to aortic root disease, the murmur is best heard at the right upper sternal border and not at Erb's point. As aortic regurgitation worsens in severity, the pressure between the left ventricle and the aorta equalize much faster, thus the murmur becomes significantly shorter.