Dicrotic pulse

Dicrotic pulse

A dicrotic pulse[1] is a type of pulse characterized by a percussion wave in systole and a prominent dicrotic wave in diastole. Physiologically, the dicrotic wave is the result of reflected waves from the lower extremities and aorta.

Conditions associated with low cardiac output and high systemic vascular resistance can produce a dicrotic pulse.[2] Moreover, conditions associated with low systemic vascular resistance and a compliant aorta (e.g. sepsis) can also produce a dicrotic pulse, although the mechanism is not entirely understood.

In contrast to an anacrotic or bisferiens pulse, the 2 peaks in a dicrotic pulse occur in systole and diastole (as opposed to both occurring in systole).

See also


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  • dicrotic pulse — a pulse whose tracing has two peaks instead of the usual one, the second one coming during diastole as an exaggeration of the dicrotic wave. See also anacrotic p. and catadicrotic p …   Medical dictionary

  • Dicrotic — Di*crot ic, a. [Gr. ? = ? to knock, beat.] (Physiol.) (a) Of or pertaining to dicrotism; as, a dicrotic pulse. (b) Of or pertaining to the second expansion of the artery in the dicrotic pulse; as, the dicrotic wave. [1913 Webster] …   The Collaborative International Dictionary of English

  • dicrotic notch — n 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 * * * a small downward deflection in the arterial pulse or… …   Medical dictionary

  • dicrotic — [dī krät′ik] adj. [< Gr dikrotos, double beating (< di , DI 1 + krotos, rattling noise) + IC] of or having a double pulse beat with each heart beat [a dicrotic artery] dicrotism [dīkrə tiz΄əm] n …   English World dictionary

  • Pulse — The rhythmic dilation of an artery resulting from beating of the heart. It is often measured by feeling the arteries of the wrist. * * * Rhythmic dilation of an artery, produced by the increased volume of blood thrown into the vessel by the… …   Medical dictionary

  • dicrotic wave — the second portion of the arterial pulse or arterial pressure recording after the dicrotic notch, attributed to the reflected impulse of closure of the aortic valves. Called also recoil w …   Medical dictionary

  • dicrotic — adjective Etymology: Greek dikrotos, from di + krotos rattling noise, beat Date: circa 1811 1. of the pulse having a double beat 2. being or relating to the second part of the arterial pulse occurring during diastole of the heart or of an… …   New Collegiate Dictionary

  • dicrotic — Relating to dicrotism. [G. dikrotos, double beating] * * * di·crot·ic ( )dī krät ik adj 1) of the pulse having a double beat (as in certain febrile states in which the heart is overactive and the arterial walls are lacking in tone) compare… …   Medical dictionary

  • dicrotic — dicrotism /duy kreuh tiz euhm/, n. /duy krot ik/, adj. Physiol. having or pertaining to a double beat of the pulse for each beat of the heart. [1700 10; < Gk díkrot(os) double beating (di DI 1 + krótos a clapping, rattling noise) + IC] * * * …   Universalium

  • dicrotic — [dʌɪ krɒtɪk] adjective Medicine denoting a pulse in which a double beat is detectable for each beat of the heart. Origin C19: from Gk dikrotos beating twice + ic …   English new terms dictionary

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