Heart Sounds - AMA Manual of Style

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Heart Sounds 


Harriet S. Meyer

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PRINTED FROM AMA MANUAL OF STYLE ONLINE (www.amamanualofstyle.com). © American Medical Association, 2009. All Rights Reserved. Under the terms of the license agreement, an individual user may print out a PDF of a single chapter of a title in AMA Manual of Style Online for personal use (for details see Privacy Policy). date: 25 November 2015

The 4 heart sounds and 4 components are commonly abbreviated in discussions of cardiac auscultatory findings; numerical subscripts are used.S1 first heart sound  M1 mitral valve component  T1 tricuspid valve component S2 second heart sound  A2 aortic valve component  P2 pulmonic valve component S3 third heart sound S4 fourth heart sound Examples: The presence of an audible S3was consistent with the patient’s ventricular aneurysm. An audible S4 may be due to a variety of cardiac and systemic conditions. Sound names may be written out in full when discussed generically.Third heart sounds are suggestive of congestive heart failure, but an S3gallop

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