Clot

clot (klot)

1. coagulum; a semisolid mass, as of blood or lymph.

2. coagulate.

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agony clot  a type of antemortem clot formed in the process of dying.

antemortem clot  one formed in the heart or in a large vessel before death but found after death.

blood clot  a coagulum in the bloodstream formed of an aggregation of blood factors, primarily platelets, and fibrin with entrapment of cellular elements.

chicken fat clot  a yellow-appearing blood clot, due to settling out of erythrocytes before clotting.

currant jelly clot  a reddish clot, due to the presence of erythrocytes enmeshed in it.

laminated clot  a blood clot formed by successive deposits, giving it a layered appearance.

passive clot  one formed in the sac of an aneurysm through which the blood has stopped circulating.

plastic clot  one formed from the intima of an artery at the point of ligation, forming a permanent obstruction of the artery.

postmortem clot  one formed in the heart or in a large blood vessel after death.

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clot (klt)

n.

A soft, nonrigid, insoluble mass formed when blood or lymph gels.

v.

To coagulate.

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Clot

A soft, semi-solid mass that forms when blood gels.

Mentioned in: Anticoagulant and Antiplatelet Drugs, Immunologic Therapies

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clot,

n coagulated blood, plasma, or fibrin.

clot, blood,

n a coagulum formed of blood of a semisolidified nature. See also clotting factors.

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clot

1. a semisolidified mass, as of blood or lymph.

2. to form such a mass.

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dilute whole blood clot retraction test

an indirect measure of fibrinolytic activity. Whole blood is diluted with saline, chilled, then warmed. The time for clot retraction, and later clot lysis, is measured.

clot formation

a complex interaction, part of the phenomenon of blood clotting. The process is irreversible but the clot may be dissolved naturally.

clot lysis

the time required for a clot to lyse at 98.6°F (37°C) is a reflection of the plasmin content of the blood. Clot retraction and fibrinogen content of the blood sample are also influential.

clot retraction

the drawing away of a blood clot from a vessel wall, a function of thrombasthenin, released by blood platelets.

clot retraction test

a test for platelet numbers and function. Clotted whole blood should retract away from the sides of a glass tube in 1 to 2 hours.