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24 Cards in this Set
- Front
- Back
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The anticoagulant used for most hematology studies is EDTA (True or false) |
True |
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Hepatitis B virus can be transmitted by contact with infected blood or other body fluids (True or false) |
True |
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It is acceptable for a blue top tube to be incompletely filled if blood collection is difficult (True or false) |
False |
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OSHA is the federal agency that creates workplace safety regulations (True or false) |
True |
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Lumen |
The open space within a tubular organ or tissue |
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Palpate |
To examine by touch |
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Cephalic vein |
A superficial vein on the thumb side of the arm |
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Vein |
A blood vessel that carries deoxygenated blood from the tissues to the heart |
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Hemoconcentration |
An increase in the cellular elements of the bloof |
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Safety needle system |
Engineering controls for safety |
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Hematoma |
The swelling of tissue around a vessel due to leakage of blood into the tissue |
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Hypodermic needle |
A hollow needle used for injections or for obtaining fluid specimens |
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Types of needles |
* Multisample * Hypodermic * Winged infusion (butterfly) 🦋 |
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Evacuated tube system (ETS) |
Closed system in which blood flows through a needle inserted into a vein and then directly into a collection tube *Prevents exposure to air or outside contaminants |
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Vacuum |
Negative pressure artificially created by pulling air from tube. Designed to draw an exact volume or blood into tube |
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Additive tube |
Substance added to tube Ex.) Anticoagulant |
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Anticoagulant |
Substances that prevent blood from clotting *** TWO methods of preventing clotting: * Precipitating calcium (calcium needs to be present for blood to clot) * Inhibiting (preventing) formation of thrombin *** |
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Type of Anticoagulants |
* Ethylenediaminetetraacetic acid (EDTA) * Citrates * Heparin * Oxalates |
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Special-use anticoagulants |
* acid citrate dextrose (ACD) * Citrate phosphate dextrose (CPD) * Sodium polyanethol sulfonate (SPS) |
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Antiglycolytic agent |
Substance that prevents glycolysis (break down or glucose by blood cells) * Sodium fluoride (most common) * Preserves glucose for up to 3 days and inhibits (prevents) bacteria growth * Used with potassium oxalate (anticoagulant) for rapid response |
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Clot activators |
Substances that enhance coagulation in serum specimen tubes |
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Type of clot activators |
Substance that provide more surface for platelet activation * Glass (silica) particles * Inert clays (Celite) - clotting factors (thrombin) |
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Additive |
Any substance placed within a tube other than the tube stopper or silicone coating, if any. |
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ECHO |
E - EDTA C - Citrate H - Heparin O - Oxalate *Most common anticoagulants* |
