MDA 180 Chapter 48 Flashcards
Anticoagulant
Substances that prevent clotting
Hemolysis
The rupturing of red blood cells, which releases hemoglobin
Lancet
A small, disposable instrument with a sharp point used to puncture the skin and make a shallow incision; used for capillary puncture
Buffy Coat
The layer between the packed red blood cells and plasma in a centrifuged blood sample; this layer contains the white blood cells and platelets
Butterfly System
Also called the winged fusion collection system. A type of needle used to draw blood from patients with small or fragile veins.
Complete Blood Count
A combination of the following determinations: red blood cell indices and count, white blood cell count, hematocrit, hemoglobin, platelets, and differential blood count.
Venipuncture
The puncture of a vein, usually with a needle, for the purpose of drawing blood
Hematoma
A swelling caused by blood under the skin
Whole Blood
The total volume of plasma and formed elements, or blood in which the elements have not been separated by coagulation or centrifugation
Erythrocyte Sedimentation Rate
The rate at which red blood cells, the heaviest blood component, settle to the bottom of a blood sample