Chapter 11 Terminology Phlebotomy

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aerobic

microorganisms that prefer or require an oxygen-rich environment for growth.

anaerobic

microorganisms that prefer or require a carbon-dioxide-rich environment for growth.

antecubital

in the inner arm at the bend of the elbow; the most common site for venipuncture.

anticoagulant

an agent that prevents the clotting of blood, such as oxalate citrate, EDTA, or heprin.

bevel

sheared opening ay the anterior end of the needle. Needles should enter the vein with the bevel side of the needle "up" or visible to the lab personnel.

coagulation studies

tests preformed to see how fast and how well the patient is capable of forming a clot.

evacuated tube system

a vacuum tube system for drawing blood by venipuncture. It allows multiple samples to be drawn with a single puncture.

gauge

the diameter of the needle. The smaller the gauge, the larger the diameter.

hemoconcentratration

the increase concentration of red blood cells due to the decreased plasma volume.

hemoglobin

the oxygen-carrying protein of red blood cells.

hemolysis

the breakdown of red blood cells, with the release of hemoglobin into the plasma or serum. In general, hemolyzed specimen are not acceptable for testing.

icteric

jaundiced; characterized by high level of bilirubin. Iceteric serum and plasma appear dark yellow or greenish.

lipemic

having an abnormally high level of fat. Specimens are cloudy or milky in appearance.

median cephalic vein

one of the major veins of the inner arm. It is used frequently in venipuncture.

median cubital vein

a short vein of the inner arm just below the elbow. It is used frequently in venipuncture.

needle holder

also known as hub or adapter; the plastic holder into which the postier end of the needle is secured.

needlestick

the act of puncturing yourself with a used needle.

palpating

touching or feeling.

phlebotomy

blood collection by venipuncture.

plasma

a pale yellowish liquid part of the whole blood.

platelet

a small round or oval disk shaped fragment in human blood that assists in blood clotting.

quantity not sufficient (QNS)

when the amount of the specimen is not adequate and therefor testing cannot be preformed.

serum

the yellowish liquid portion of the blood after the blood has been allowed to clot; it does not contain firbrogen; fibrogen is in the clot.

tourniquet

a constrictor band used to distend veins veins to facilitate venipuncture.

venipuncture

the puncture of a vein for therapeutic purposes or for drawing blood.

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