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Korotkoff sounds

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

There are five sounds which are heard as the pressure in the syphgmomanometer cuff is released during the measurement of arterial pressure. These are described as:

  • Korotkoff I is a sharp thud
  • Korotkoff II is a loud blowing sound
  • Korotkoff III is a soft thud
  • Korotkoff IV is a soft blowing sound
  • Korotkoff V is silence

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