Quincke's pulse - definition of Quincke's pulse in the Medical dictionary - by the Free Online Medical Dictionary, Thesaurus and Encyclopedia.

pulse (puls) the rhythmic expansion of an artery that may be felt with the finger.

alternating pulse one with regular alternation of weak and strong beats without changes in cycle length.

anacrotic pulse one in which the ascending limb of the tracing shows a transient drop in amplitude.

bigeminal pulse one in which two beats occur in rapid succession, the groups of two being separated by a longer interval.

cannonball pulse Corrigan's p.

capillary pulse Quincke's p.

catadicrotic pulse one in which the descending limb of the tracing shows two small notches.

Corrigan's pulse jerky pulse with full expansion and sudden collapse.

dicrotic pulse a pulse characterized by two peaks, the second peak occurring in diastole and being an exaggeration of the dicrotic wave.

entoptic pulse a phose occurring with each pulse beat.

hard pulse one characterized by high tension.

jerky pulse one in which the artery is suddenly and markedly distended.

paradoxical pulse one that markedly decreases in size during inhalation, as often occurs in constrictive pericarditis.

pistol-shot pulse Corrigan's p.

plateau pulse one that is slowly rising and sustained.

quadrigeminal pulse one with a pause after every fourth beat.

Quincke's pulse alternate blanching and flushing of the nail bed due to pulsation of subpapillary arteriolar and venous plexuses; seen in aortic insufficiency and other conditions and occasionally in normal persons.

Riegel's pulse one that is smaller during respiration.

thready pulse one that is very fine and scarcely perceptible.

tricrotic pulse one in which the tracing shows three marked expansions in one beat of the artery.

trigeminal pulse one with a pause after every third beat.

vagus pulse a slow pulse.

venous pulse the pulsation over a vein, especially over the right jugular vein.

Normal jugular venous pulse: A, a positive wave due to contraction of the right atrium; C, a positive deflection due to bulging of the tricuspid valve toward the atria at the onset of ventricular contraction; X, a negative deflection due to atrial relaxation; V, a positive deflection due to filling of the right atrium against the closed tricuspid valve during ventricular contraction; Y, a negative deflection due to emptying of the right atrium upon ventricular relaxation.

water-hammer pulse Corrigan's p.

wiry pulse a small, tense pulse.

Quincke's pulse

Capillary pulsation, as shown by alternate reddening and blanching of the nailbed with each heartbeat; it is a sign of arteriolar dilation and aortic insufficiency. Also called Quincke's sign.

Quincke's pulse

Etymology: Heinrich I. Quincke

an abnormal alternate blanching and reddening of the skin or nails that may be observed in several ways, such as by pressing the front edge of the fingernail and watching the blood in the nailbed recede and return. This pulsation is characteristic of aortic insufficiency and other abnormal conditions but may also occur in otherwise normal individuals. Formerly it was thought to be caused by pulsation of the capillaries; it is now known to be caused by pulsation of subpapillary arteriolar and venous plexuses. Also called capillary pulse, Quincke's sign.

Quincke's pulse

Quincke sign Cardiology A sign of aortic regurgitation due to ↑ pulse pressure, characterized by alternating flushing and blanching of the skin, due to pulsating of subpapillary arteriolar and venular plexi; QP is seen in nailbeds, classically in Pts with aortic regurgitation–insufficiency, but may be seen in normal individuals. See Aortic regurgitation.