Medical Definition of dicrotic notch
: a secondary upstroke in the descending part of a pulse tracing corresponding to the transient increase in aortic pressure upon closure of the aortic valve
— called also dicrotic wave
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“Dicrotic notch.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/dicrotic%20notch. Accessed 17 Oct. 2021.
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