Friday, September 3, 2010

ANSWERS TO REVIEW QUESTIONS FOR VENIPUNCTURE

ANSWERS TO REVIEW QUESTIONS FOR VENIPUNCTURE

1. What are the precautions observed in venipuncture?

Identify your patient properly.
Avoid hemolysis at all costs because this will cause inaccurate results.
Do not apply the tourniquet longer than necessary.(more than 2 minutes)
Sterilize well in a circular manner to avoid contamination.
Follow the direction of the vein.
Anchor the needle properly to the syringe or adapter before puncturing.
The bevel of your needle should be facing up.
Do not re-use needles to avoid contamination.
Use only sterilized and dry syringes and needles.
Throw all sharps in the sharps container.
Discard your trash properly.
Label your specimen tubes RIGHT AFTER blood collection.
Know the test to be performed before commencing collection.

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2. Discuss some complications encountered in venipuncture. How could you minimize these problems?

Syncope
Edema
Hematoma
HIV
Hepatitis
Thrombophlebitis
Thrombosis
Transfixation

(FOR MINIMIZING PLEASE REFER TO LECTURE NOTES)


3. What are the three methods of blood collection? Give a brief description of each.

Arterial
Capillary
Venipuncture

(REFER TO LECTURE NOTES FOR DESCRIPTIONS)

4. Enumerate the different anticoagulants and the disadvantages and advantages of each.

(REFER TO LECTURE NOTES)

5. What are the disadvantages and advantages of the vacutainer method of blood collection?

You perform multiple collections.
You can collect larger amounts of blood.
You can store the blood.
It is easier to perform.

6. Name the different colors employed in the vacutainer method and their corresponding anticoagulant and specific uses.

Red- no anticoagulant
Blue - citrate
Green -heparin
Lavender - EDTA
Black- oxalates
Gray - fluoride

7. What are the sequence in which tubes are drawn in CC?

RBGLBG

Red, blue, green, lavender, black, gray

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