tubes continued

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  1. which additives cause the least and most interference due to cross over
    heparin is the least and EDTA causes the most problems due to cross over of additive from one tube to another.
  2. what is a requisition
    form on which the test orders are entered
  3. accession is
    the process of recording in the order received. to accession a specimen means to connect it with the paperwork and individual

    (p 229)
  4. patency means
    determine the size, direction, path and depth of the vain
  5. clean the site in
    concentric circles
  6. the needle sheath is
    the needle cap or cover
  7. insertion angle for shallow or deeper veins
    15 degrees for shallow, and 30 for deep veins
  8. angle of entry for butterfly needle
    10-15 degrees
  9. what is reflux?
    blood in tube is in contact with the needle and can go back into the vein if a change in the pressure of the vein occurs. This can cause adverse reactions due to additives

    (p 250)
  10. label the tubes with
    • patients first and last name
    • MRN and DOB
    • Date and time of collection
    • phlebotomist initials
    • other pertinent information like fasting

    (p 252)
  11. how long does it take for a local anesthetic (EMLA) take to work
    1 hour for 5 mm in depth
  12. basal state refers to
    the resting metabolic state (early morning after fasting 12 hours)

  13. hemoconcentration is
    blood components cannot easily leave the bloodstreem and become concentrated in the smaller plasma volume.
  14. lipemia
    abnormally raised lipids in blood
  15. lipemic
    is related to lipemia causing the plasma to appear milky.
  16. diurnal
    happening daily
  17. circadian
    24 hours
  18. why not draw blood from the same side of a patient's body who had a mastectomy?
    the lymph node is typically removed as part of the procedure and drawing blood can cause lymphostasis. (lymphostasis creates errors in tests too).
  19. lymphostasis is
    obstruction or stoppage of normal lymph flow and can result in swelling and infection

    (p 292)
  20. when drawing blood from someone on a heparin or saline lock (catheter or cannula connected to a stopcock/cap)....
    discard the first 5-mL of blood, because it provides access for administering medication and heparin sticks to the tube.

  21. what do you do in a patient IV in both arms, so you can't draw from the arm without it?
    • 1) collect via capillary
    • 2) collect from below the IV

    (p 297)
  22. drawing blood from an indwelling line or central vascular access device (CVAD)
    2 times the dead-space (usually 5 mL) volume of the line or tubing. coagulation tests are avoided on CVAD lines.
  23. symptoms of fainting
    pallor (paleness), perspiration, and hyperventilation, spinning, dizziness, light-headedness, or nausea.

    (p 301)
  24. after faining
    patient must remain in the area for 15 minutes and be asked not to operate machinery for 30 minutes
  25. what do you do if a patient vomits during the procedure
    the procedure must be terminated immediately.
  26. what is probing
    excessive, deep, blind, or lateral redirecting and should never be attempted.

    (p 303)
  27. extreme pain, numbness of the arm, burning or electric-shock sensation or pain that radiates up or down the arm indicates...
    nerve involvement and the needle should be removed. Contact a physician if pain persists
  28. what do you do if a hematoma forms during collection
    discontinue the draw immediately, and put pressure on the site for 2 minutes
  29. exsanguination is
    where more than 10% of the patient's blood volume is removed to the point where life cannot be sustained.
  30. what are the effects of prolonged tourniquet use
    cholesterol levels increase up to 5% after 2 minutes and 15% after 5 minutes

    (p 307)
  31. effects of hand pumping
    increases potassium levels up to 20 %
  32. rupturing of RBC's
    hemolysis or hemolyzed blood makes serum or plasma appear pink.
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tubes continued
2011-08-31 07:17:01

ch 7 and up
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