Dock's murmur

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Overview
Dock's murmur is an early diastolic murmur that heard in some patients with left anterior descending artery stenosis. The murmur is not widespread like that of aortic regurgitation and is heard best at the left second or third intercostal space, a little lateral to the left sternal border

The murmur may be long or short. It is caused by turbulent flow across the coronary artery stenosis and usually indicates moderately severe stenosis.

A coronary artery bypass surgery can eliminate the murmur.

Additional Reading

 * Moss and Adams' Heart Disease in Infants, Children, and Adolescents Hugh D. Allen, Arthur J. Moss, David J. Driscoll, Forrest H. Adams, Timothy F. Feltes, Robert E. Shaddy, 2007 ISBN 0781786843
 * Hurst's the Heart, Fuster V, 12th ed. 2008, ISBN 978-0-07-149928-6
 * Willerson JT, Cardiovascular Medicine, 3rd ed., 2007, ISBN 978-1-84628-188-4