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Heart sounds. A. Normal. S1, first heart sound; S2, second heart sound; A2, aortic component of the second heart sound; P2, pulmonic component of the second.

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Presentation on theme: "Heart sounds. A. Normal. S1, first heart sound; S2, second heart sound; A2, aortic component of the second heart sound; P2, pulmonic component of the second."— Presentation transcript:

1 Heart sounds. A. Normal. S1, first heart sound; S2, second heart sound; A2, aortic component of the second heart sound; P2, pulmonic component of the second heart sound. B. Atrial septal defect with fixed splitting of S2. C. Physiologic but wide splitting of S2 with right bundle branch block (RBBB). PA, pulmonary artery. D. Reversed or paradoxical splitting of S2 with left bundle branch block (LBBB). E. Narrow splitting of S2 with pulmonary hypertension. (From NO Fowler: Diagnosis of Heart Disease. New York, Springer-Verlag, 1991, p 31.) Source: Physical Examination of the Cardiovascular System, Harrison's Principles of Internal Medicine, 19e Citation: Kasper D, Fauci A, Hauser S, Longo D, Jameson J, Loscalzo J. Harrison's Principles of Internal Medicine, 19e; 2015 Available at: Accessed: November 11, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved

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