Venous Blood Collection / Venipuncture (M)
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What are the originating Greek words of the term ‘phlebotomy’?
1) phlebo 2) tomia
What is the meaning of the Greek word phlebo?
vein
What is the meaning of the Greek word tomia?
cutting off
What are the principles of phlebotomy?
1) Describes the procedure of inserting a needle into a vein, to be able to collect blood 2) It is one of the most commonly performed procedures w/c, carried out skillfully, carefully, and accurately 3) will provide high quality blood sxs w/out causing discomfort to pt
What is the importance of preanalytical phase?
The ability of a lab to deliver pt results w/ of highest QUALITY and RELIABILITY starts w/ their preanalytical phase
What phase is the most crucial (or most important) in phlebotomy?
Preanalytical phase
What are the types of venipuncture?
1) Syringe method 2) ETS / Vacuette method
What is the other term for syringe method?
Open system
What is the other term for ets / vacuette method?
Closed system
What are the characteristics (or circumstances that may occur) of syringe method?
1) Time and labor intensive 2) Requires manual transfer of specimen to sample tubes 3) Prone to higher risk exposure to sx and accident due to manipulation 4) Inaccurate blood to additive ratio
What are the characteristics (or circumstances that may occur) of vacuette method?
1) Most rapid method to draw multiple sxs 2) It draws blood into the tubes at a safe speed, reducing the risk of direct exposure to blood 3) Dilution of the blood to additive is more accurate
What are the characteristics that makes a vein optimal for venipuncture?
1) Well-supported by muscle and connective tissue 2) Large and prominent 3) Easily visible 4) Easy to palpate 5) Elastic quality or bouncy 6) Soft
What are the stages (or steps) to locate a vein?
1) Visual inspection 2) Palpation
What is the principle of visual inspection of vein?
The scrutiny of the veins in both arms is essential prior to choosing a vein
What are the purposes of palpation?
1) Determines the loc and condition of the veins 2) Determines the size, depth, and direction of veins 3) Distinguishes veins from arteries
What is the preferred area for venipuncture?
Veins of the antecubital fossa
What are the veins in the antecubital fossa?
1) Median cubital vein 2) Cephalic vein 3) Basilic vein
What is the importance (or purpose) of dorsal hand veins?
These veins are used if the antecubital fossa is unavailable
What should be used for venipuncture in dorsal hand veins?
Use of blood collection set (butterfly winged infusion set)
Why is butterfly winged infusion set recommended for use to dorsal hand veins for venipuncture?
Because these veins are small fragile veins
What are the other terms for butterfly winged infusion set (syringe?)?
Safety Blood Collection / Infusion set
What is the purpose (or importance) of veins of the foot?
These veins are the last resort for blood collection after the arm and hand veins have been determined unsuitable
What are the veins present in the foot?
1) Great Saphenous Vein 2) Lesser Saphenous Vein 3) Dorsal Venous Arch
What are the sites to avoid in venipuncture?
1) Feet or ankles 2) IV transfusion line 3) Mastectomy 4) Hematomas or edematous sites 5) Wrists 6) Arteries 7) Fistula or shunt