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In this video, we look at the pressure changes taking place in the heart during the cardiac cycle. I show you how to interpret the graphs showing pressure changes in the left atrium, left ventricle and aorta. I also discuss how these pressure changes lead to valves opening and closing.

Image credits:
Wiggers diagram
https://commons.wikimedia.org/wiki/Fi...
DanielChangMD revised original work of DestinyQx, CC BYSA 2.5 https://creativecommons.org/licenses/..., via Wikimedia Commons