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).

References

↑ Samways DW (April 1912). "THE GENESIS OF THE DICROTIC PULSE WAVE". Br Med J 1 (2675): 774–5. doi:10.1136/bmj.1.2675.774. PMC 2344508. PMID 20766095.
↑ http://heart.bmj.com/cgi/content/abstract/56/6/531

Symptoms and signs relating to the cardiovascular system (R00–R03, 785)

Chest pain	Referred pain Angina Aerophagia

Auscultation	Heart sounds Split S2 Third heart sound Fourth heart sound Gallop rhythm Heart murmur Systolic Diastolic Continuous Pericardial friction rub Heart click Bruit carotid

Pulse	Tachycardia Bradycardia Pulsus tardus et parvus Pulsus paradoxus doubled Pulsus bisferiens Dicrotic pulse Pulsus bigeminus Pulsus alternans

Vascular disease	Gangrene

Other	Palpitation Apex beat Cœur en sabot Jugular venous pressure Cannon A waves Hyperaemia

Shock	Cardiogenic Hypovolemic Distributive Septic Neurogenic

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Dicrotic pulse

See also

References