Korotkoff sounds
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Ko·rot·koff sounds
variants:
also Korotkow sounds or Korotkov sounds \ kȯ-ˈrȯt-kȯf-ˌsau̇ndz 
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\Medical Definition of Korotkoff sounds
: arterial sounds heard through a stethoscope applied to the brachial artery distal to the cuff of a sphygmomanometer that change with varying cuff pressure and that are used to determine systolic and diastolic blood pressure
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