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Crepitation

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Crepitation refers to situations where noises are produced by the rubbing of parts one against the other, as in:

  • Crepitus, a crunching sensation felt in certain medical problems
  • Rales or crackles, abnormal sounds heard over the lungs with a stethoscope
  • A mechanism of sound production in grasshoppers during flight. Also called "wing snapping".

Fine crepitation lung sounds through the stethoscope examination associated with pneumonia The coarse crepitation sounds associated with pulmonary edema