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Late systolic murmur

Late systolic murmur, which can occasionally be heard in mitral regurgitation. The first sound is clear, and an interval separates the first heart sound and the murmur. Such murmurs generally indicate very slight disease of the valve. (Source: Cabot RC. Physical Diagnosis of Diseases of the Chest. Second edition. New York: William Wood and Company, 1903. Public domain.)

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