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Gallop rhythm

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Title: Gallop rhythm  
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Subject: Fourth heart sound, Third heart sound, Gallop (disambiguation), Cardiovascular examination, Pierre Potain
Collection: Cardiology
Publisher: World Heritage Encyclopedia

Gallop rhythm

Gallop rhythm
Classification and external resources
ICD-9-CM 427.9, 785.3

A gallop rhythm refers to a (usually abnormal) rhythm of the heart on auscultation.[1] It includes three or four sounds, thus resembling the sounds of a gallop.

The normal heart rhythm contains two audible heart sounds called S1 and S2 that give the well-known "lub-dub" rhythm; they are caused by the closing of valves in the heart.

A gallop rhythm contains another sound, called S3 or S4, dependent upon where in the cycle this added sound comes.

It can also contain both of these sounds forming a quadruple gallop, and in situations of very fast heart rate can produce a summation gallop where S3 and S4 occur so close as to be indistinguishable.

Associated conditions

Gallop rhythms may be heard in young or athletic people, but may also be a sign of serious cardiac problems like heart failure as well as pulmonary edema.


  1. ^ Tavel ME (November 1996). "The appearance of gallop rhythm after exercise stress testing". Clin Cardiol 19 (11): 887–91.  

External links

  • - suitable for non-medical people, but requires some knowledge of medical terms
  • - requires knowledge of medical terms
  • - American Heart Assoc., Gallop Rhythm of the Heart
  • Kuo PT, Schnabel TG, Blakemore WS, Whereat AF (1957). "Diastolic gallop sounds, the mechanism of production". J. Clin. Invest. 36 (7): 1035–42.  
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