Neuro-Ophthalmology & Neuro-Otology
Apr. 05, 2023
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The place of the murmur and its crescendo character are indicated by the position of the light lines just before the first heart sound (S1) and by their increasing length. (Source: Cabot RC. Physical Diagnosis of Diseases of the Chest. Second edition. New York: William Wood and Company, 1903. Public domain.)