Chapter 53 Assisting in Phlebotomy – Flashcards
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It is important to shake a Vacutainer tube after collecting a blood sample so that the sample and additive are properly mixed
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False
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YOu notice patient is developing petechiae during blood draw. This typically means patient has a bleeding disorder
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False
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Which of the following Vacutainer tubes is routinely used for hematology testing?
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A. Lavender topped
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No anticoagulants are found in which of the following tubes?
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B. Red topped
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Which type of tube should be used to collect blood specimens during glucose tolerance test
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C. Gray topped
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____ is an anticoagulant that prevents platelets from clumping and preserves the apperance of blood cells for microscopic preparation
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C. Ethylenediamine tetraacetic acid (EDTA)
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The slant at the open end of a needle used for venipuncture is called
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B. bevel
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The needle size most commonly used for adult venipuncture is ___ gauge.
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D. 21
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The needle size most commonly used by blood bank for donations is ___ gauge
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A. 16
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The needle size most commonly used in infants and the elderly is ___ gauge
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B. 23
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Plasma could be retrieved from
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D. B and C (SST red-gray tube, PST green-gray tube)
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A tourniquet is used during the phlebotomy procedure to
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D. B and C (prevent venous flow out of the site, cause the vein to bulge)
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A tourniquet should remain tied on a patients arm no longer than
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D. 1 minute
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Without a clot activator, whole blood typically clots in ___ minutes
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C. 30 to 60
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Thixotropic gel, found in SST red-gray marbled-topped Vacutainer tube is
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D. less dense than red blood cells but more dense than serum
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The ___ is part of the venipuncture needle that fits into syringe or Vacutainer adapter
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C. Hub
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Proper order for venous blood specimen for hematology
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C. Light blue, red, lavender
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You are required to collect a venous sample for typical hematology test, the complete blood count
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E. lavender-topped tube
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A syringe is preferred over a Vacutainer collection device when
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A. patients veins are fragile
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Leaving a tourniquet tied on a patients arm for longer than the recommended time results in
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B. hemoconcentration
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Before a routine venipuncture or capillary puncture, the site typically is cleaned with
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A. isopropyl alcohol
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In a routine venipuncture, the angle at which the needle enters the arm should be ___ degrees
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C. 15
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During a routine venipuncture, when should the phlebotomist request that the patient "make a fist"
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A. after applying the tourniquet and before inserting the needle
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During a routine venipucture, when should the phlebotomist request that the patient "release the fist"?
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C. when blood enters the first tube being drawn
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When is the correct time to remove the tourniquet during a routine venipuncture?
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B. as the last tube to be drawn begins to fill
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Which veins can be used to routine venipuncture?
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D. all of the above (medial cephalic, medial basilic, supplementary cephalic)
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A winged infusion set is also known as
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C. butterfly needle
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A needle-stick is more likely to occur if
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A. an attempt is made to recap a needle
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why should a tourniquet not be tied too tightly?
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D. all of the above (impedes arterial blood flow, restricts venous blood return, results in poor venous distention)
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A hematoma can be caused by
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D. all of the above
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Blood obtained via capillary puncture can be collected
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E. all of the above
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The device used for dermal puncture is
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B. lancet
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The most common phlebotomy site in adults is
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C. veins in the antecubital space
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The proper procedure to collecting serum specimen is
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E. B and D (allow specimen to cloth, use red or marbled top tube)
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Which is the most correct method for performing capillary puncture?
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C. Wipe away the first drop of blood and then collect the sample
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You are performing capillary puncture on patient and having difficulty collecting adequate sample. Which is acceptable method to encourage blood flow from site
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D. gently rub finger along side
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The clear part of whole blood contains clotting agents
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A. plasma
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Capillary blood samples may be collected at following sites except
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A. antecubital space
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Which is proper technique for performing venipucture
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A. needle bevel is faced up, needle is inserted at 15 degree angle
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The color of the tube top for collecting coagulation test
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B. light blue
