Inside View of Blood Pressure: The Physiology of Korotkoff Sounds

This video gives a simple overview of how to take blood pressure with a sphygmomanometer and stethoscope and the physiology behind it. It shows basic anatomy involved in blood pressure (brachial artery, radial artery). Clearly demonstrates the pinching of the brachial artery that causes the "thumping" Korotkoff sounds.

Created by Steven Semadeni
Narrated by Joshua Palmer
Featuring Coltin Steele and Jake Foster

Graphics Used:

3D Brachial Artery and blood cells created and animated by Steven Semadeni.

[yousefalhaboob]

Amazing, can't find anyone else that can explain it that well.

[MAAT]

I thought that it had to be an even number?🤔

[billymiles]

I notice on almost all of these videos that the initial thumping sound is loud. When I do a manual test the initial Korotkoff Sound is very, very faint. Your sound seems to begin at Phase 2.