clot retraction

retraction /re·trac·tion/ (-trak´shun) the act of drawing back, or condition of being drawn back.

---

clot retraction  the drawing away of a blood clot from the wall of a vessel, a stage of wound healing caused by contraction of platelets.

---

clot retraction,

the shrinking of a semisolid mass formed by the coagulation of blood, lymph, or other fluid. A normal standing blood clot is completely retracted in about 24 hours, although the time depends on such factors as the number of platelets in the clot.

---

clot

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

2. to form such a mass.

---

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.

---

retraction

the act of drawing back, or condition of being drawn back.

---

clot retraction

see clot retraction.