Syringe Systems

Question 1

Syringe system

Answer 1

Consist of hypodermic needle and syringe with luter lock

Question 2

Syringe

Answer 2

Has cylindrical barrel and plunger
-rod like device within barrel that gently pulls back and fills syringe with blood
-syringe needle usually 21-23 gauge, 1-1.5 inches long, with attached re-sheathing device
-blood from syringe transferred to ETS tube using syringe transfer device
—placed on syringe after needle removed
-when filling tubes: must hold syringe transfer device vertically pointing downward to prevent contamination

Question 3

Winged infusion

Answer 3

Blood collection set consist of 0.5-0.75 inch needle with plastic extension connected to 5-12 inch tubing

• tubing can be attached to syringe or evacuated tube holder
• smaller needle sizes use with caution-can cause hemolysis
• first draw from butterfly should be discarded, will cause air in tubing causing first evacuated tube to be under filled

Question 4

Tourniquets

Answer 4

Elastic band wrapped around arm, restrict flow of blood.

• cause vein to expand to make it easier to puncture
• should not be used more than 1 minute
• single-use or multi-use
• multi-use should be disinfected
• used to locate and identify difficult veins

Question 5

Vein viewer

Answer 5

Vein locating device use transillumination to identify vein under skin

• light projected on skin, hemoglobin in blood absorb light, making veins appear darker than surrounding tissues
• use when veins are difficult to identify or locate