Denoting a pulse in which a double beat is detectable for each beat of the heart.
- As with the arterial pressure wave, a normal pulse volume tracing has a brisk upstroke and a dicrotic notch.
- The balloon should begin inflation on the dicrotic notch which represents the beginning of diastole.
- The precise mechanism for a dicrotic pulse in the last group is not clear; it is more frequently observed in patients with pump failure postoperatively.
Early 19th century: from Greek dikrotos 'beating twice' + -ic.
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