Exam

S3 Heart Sound

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S3 Heart Sound, S3 Gallop, S3 Gallup Rhythm, Third Heart Sound

  • Signs
  1. S1, S2, S3 sound like "Ken-tuck-y" (lub-dub-dub)
  • Technique
  1. Best heard in left lateral decubitus position
  • Causes
  1. Normal
    1. Age under 40 years
    2. Third Trimester of pregnancy
  2. Left or Right Ventricle Volume Overload
    1. Mitral Regurgitation
    2. Tricuspid Regurgitation
    3. Congestive Heart Failure
  • Resources
  1. University of Michigan Heart Sound and Murmur Library
    1. http://www.med.umich.edu/lrc/psb/heartsounds/