Korotkoff sounds are generated when a blood pressure cuff changes the flow of blood through the artery. These sounds are heard through either a stethoscope or a doppler that is placed distal to the blood pressure cuff.
There are five distinct phases of Korotkoff sounds:
Phase 1: A sharp tapping.
This is the first sound heard as the cuff pressure is released. This sound provides the systolic pressure reading.
Phase 2: A swishing/whooshing sound.
Swishing sounds as the blood flows through blood vessels as the cuff is deflated.
Phase 3: A thump (softer than phase 1).
Intense thumping sounds that are softer than phase 1 as the blood flows through the artery but the cuff pressure is still inflated to occlude flow during diastole.
Phase 4: A softer, blowing, muffled sound that fades.
Softer and muffled sounds as the cuff pressure is released. The change from the thump of phase 3 to the muffled sound of phase 4 is known as the first diastolic reading.
Phase 5: Silence.
Silence that occurs when the cuff pressure is released enough to allow normal blood flow. This is known as the second diastolic reading.
Learn more about blood pressure here: https://www.ausmed.com.au/cpd/articles/how-to-take-blood-pressure
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Is the sound supposed to sound that clear bc from other videos it sounds more like murmurs?
What an assenine thing to have pulsating bass music going in the background, when trying to explain sounds with a bass frequency content that is pulsating. Which millennial thought this was a good idea ? Common sense ?
Stupid !! Pulsating music when trying to explain heatbeat sounds ? Really. Who could possibly think that this makes sense ?
Great Einstein! Mix sounds you want to show with music and beats. Common sense is really uncommon
why the stupid background music!!
There must be somthing wrong because I can't hear the music in my stethoscope during auscultation
Korotkoff sounds can be a bit obtuse at first. Like anything else, you eventually learn to interpret the sounds you hear. I'm now used to my single-sided Littmann Stethoscope. I now prefer it to any of the others. I think I paid some £70-80 for it some 20 or so years ago. Not sure what they cost to buy now? An Accoson Dekamet cost £40.00 back in 1994. I still have mine, replete with it's shut-off valve to stop the mercury sloshing around in the manometer tube. It is in almost new condition.
How helpful is it really to have background music playing when you're trying to hear the difference in the blood pressure sounds? Of all the times I've taken blood pressure by listening with a stethoscope, funny, I have never heard background music playing through this stethoscope!
The background music ruins everything
This video is increasing my blood pressure!