Aortic valve regurgitation - Symptoms and causes - Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/aortic-valve-regurgitation/symptoms-causes/syc-20353129
WEBOct 4, 2023 · The aortic valve has flaps, also called cusps or leaflets, that open and close once during each heartbeat. In aortic valve regurgitation, the valve doesn't close properly. This causes blood to leak back into the lower left heart chamber, called the left ventricle. As a result, the chamber holds more blood. trileaflet
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