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The Third Heart Sound.


Silverman ME.


In: Walker HK, Hall WD, Hurst JW, editors.


Clinical Methods: The History, Physical, and Laboratory Examinations. 3rd edition. Boston: Butterworths; 1990. Chapter 24.


The third heart sound (S3) is a low-frequency, brief vibration occurring in early diastole at the end of the rapid diastolic filling period of the right or left ventricle (Figure 24.1) Synonymous terms include: ventricular gallop, early diastolic gallop, ventricular filling sound, and protodiastolic gallop. The term gallop was first used in 1847 by Jean-Baptiste Bouillaud to describe the cadence of the three heart sounds occurring in rapid succession. The best description of a third heart sound was provided by Pierre Carl Potain, a pupil of Bouillaud, who stated:

Copyright © 1990, Butterworth Publishers, a division of Reed Publishing.

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