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Chapter 46 Terms
| Term | Definition |
|---|---|
| Additive | a substance added in small amounts, such as a chemical within a test tube |
| Antecubital Space | the inner-elbow area |
| Anticoagulant | a chemical that prevents blood from clotting and keeps it in its liquid form |
| Arteries | blood vessels that carry oxygenated blood away from the heart and to the cells |
| Basilic Veins | large veins of the hands and forearms |
| Beveled | cut at an angle; the beveled end of a needle is the opening that comes to a point |
| Blood Transfer Device | a device that allows blood to be transferred from one device to another, such as from a syringe to a vacutainer |
| Butterfly Needle | a small, winged needle used for fragile veins or intravenous infusion |
| Cannula | a small tube inserted into the body |
| Capillaries | delicate blood vessels that serve as bridges between the arteries and veins and allow for the exchange of gas, through their thin walls, between the blood and cells |
| Capillary Puncture | to penetrate the skin for the purpose of collecting capillary blood; typically performed on the middle and ring fingers |
| Cephalic Veins | veins on the outer sides of the arms |
| Constrict | to shrink or become smaller |
| Dilate | to swell or become larger |
| Evacuated Tube | a tube with a vacuum suction that pulls in the exact amount of blood needed during venipuncture; also called a vacuum container |
| Gauge | size of the needle circumference; the smaller the gauge, the larger the needle |
| Hematoma | bruise formed by a collection of blood in the tissues beneath the skin |
| Hemoglobin(Hgb) | iron-containing pigment of red blood cells that carries oxygen from the lungs throughout the body |
| Hemolysis | the rupture of red blood cells, often occurring because of trauma from poor venipuncture techniques |
| Heparin | a chemical substance that prevents blood from clotting |
| Laboratory Requisition Form | a form that is used to order a laboratory test; provides essential information about the patient, billing and coding, and tests ordered |
| Lumen | the hollow space inside of a needle |
| Palpate | to touch or feel |
| Phlebotomy | the process of entering a vein by incision or puncture, to collect blood for testing; also called venipuncture |
| Phlebotomy Technician | a phlebotomist who has passed a credentialing exam |
| Plasma | fluid portion of the blood; watery portion of the blood that contains blood cells |
| Platelets | smallest cells in blood, formed in the red bone marrow; main function is to assist in the clotting of blood for wound healing; also called thrombocytes |
| Point of Care (POC) Testing | testing at the patient’s side or in the medical office setting |
| Red Cells | blood cells responsible for carrying hemoglobin, to transport oxygen and carbon dioxide; erythrocytes |
| Serum | the liquid portion of blood that remains after clotting has occurred; includes plasma without fibrinogen |
| Syncope | fainting |
| Syringe | a tubular device with a plunger at one end and a needle at the other; used for drawing blood, removing fluid, or administering medications |
| Tourniquet | a device used to halt the flow of blood; typically a long ribbon of rubber or latex that is tied around the arm during phlebotomy |
| Vacuum Container | a tube with a vacuum suction that pulls in the exact amount of blood needed during venipuncture; also called an evacuated tube |
| Veins | blood vessels that carry blood away from the cells and toward the heart |
| Venipuncture | the process of cutting into or puncturing a vein, typically for the purpose of collecting blood samples for testing; also called phlebotomy |
| White Cells | cells of the immune system that circulate in the blood; leukocytes |
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jeiby_garcia