Hematology 2.1

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Hematology 2.1
2010-03-19 11:54:57
Blood tubes

Unit Test questions
Show Answers:

  1. Name some "Don'ts" on Lab precautions
    • -Recap needles
    • -Remove used needles from disposable syringes by hand
    • -Bend, break, or manipulate used needles
  2. What are the components of Blood?
    • Fluid portion is 55%
    • -Plasma
    • -Serum
  3. Plasma contains what? and what is it used for?
    Fibrinogen used to form clot(fibrin)
  4. What are some reasons for patient isolation?
    • To prevent spread of infection
    • To protect immuno-compromised patient
    • -normal flora of phlebotomist
    • -from nosocomial pathogens
  5. For the Blue Top, what is the formula for adjusting anticoagulant
    • 100-HCT x Sample volume= Citrate
    • 595-HCT
  6. The Green top contains what?
    • Lithium Heparin, prevents coagulation by
    • -interacting w/ anti-thrombin III
    • -inhibiting thrombin
  7. The dilution factor of anticoagulant to blood in the sodium citrate tube is what ratio?
  8. Name 5 types of Patient Isolation?
    • *Strict
    • *Enteric
    • *Wound
    • *Respiratory
    • *Protective
  9. To compensate for the dilution of anticoagulant to blood, the platelet count must be multiplied by what number?
    1.1 (addition of 10% to the intial result)
  10. What are two methods of venipuncture?
    • -Vacutainer
    • -syringe
  11. Name 3 main venipuncture sites .
    • -median cubital (site of choice, anchored, stabilized vein by tissue)
    • -Basilic (tends to roll, located inner portion)
    • -cephalic (located outer portion, skin little tougher)
  12. When checking for Patient Identification what are two important steps you must do?
    Check pts SSN and name
  13. Do not allow the tourniquet to stay on longer than how many minutes?
    1 minute
  14. What happens if you leave the tourniquet longer than 1 min?
    • Hemoconcentration could occur
    • Falsely elevates test result
  15. What should you do if your pt experience the first sign of adverse reaction?
    • D/C blood collection
    • Release tourniquet & remove needle
    • Get pt to a private room
  16. Capilllary collection are used in what situatuions?
    In infants <6 months old
  17. Why would you use capillary collection on infants <6 months old?
    • Dangerous to remove too much blood
    • Has small volume of blood
  18. What is the correct puncture site for neonates/infants?
    The heel
  19. True or False
    You can puncture the curvature of the heel of an infant.
  20. What is the puncture depth for capillary collection of an infant?
    no more than 1.6mm
  21. What reagents and Equipment do you need for a capillary collection?
    • 70% Isopropyl alcohol
    • sterile gauze
    • sterile blood lancets
    • capillary tubes
    • band-aid
  22. What are the steps to collecting capillary blood?
    • Ensure puncture site is warm
    • clean w/ alcohol
    • puncture against grain of skin quickly and firmly
    • wipe away first drop of blood
    • 1ml of blood
  23. What are some comlications you can run into when collecting capillary blood?
    • -tissue juice dilution
    • -platelet clumping
    • (collect platelet sample first)
    • -Painful procedure
    • (be truthful to children)
  24. Strict Isolation protects....
    the phlebotomist
  25. When do you use strict isolation?
    • in contagious dieseases transmitted via:
    • -direct contact
    • -air
  26. What is the purpose of Peripheral Smear?
    • To examine cells under microscope
    • Test is called WBC differential
    • -Different types WBC
    • -RBC morphology
    • -Platelet estimate
  27. Name some Wedge smear Reagents & Equipment?
    • -Two clean glass slides
    • -capillary tubes
    • -EDTA blood sample
  28. Why should you prepare a smears within _hrs?
    • 2 Hours
    • RBC's become macrocytic
    • WBC's & platelets degenerate
  29. What are some good qualities of a good (peripheral) smear?
    • -feathered edge
    • -w/ rainbow appearance
    • -free of holes, ridges & waves
  30. What are some qualities of properly Stained slides?
    • Eosinophils have bright orange granules
    • Basophils have dark blue-black granules