lab class final Flashcards
how should a patients arm be positioned for a blood draw?
arm slightly bent at the elbow (antecubital fossa)
What veins are used for blood draw?
median cubital
cephalic
basilic
what is another name for the inner elbow?
antecubital fossa
where should you place the tourniquet?
2-3 (or 3-4 inches) fingers above the puncture site
what is the maximum amount of time the tourniquet should be left on?
one minute
what is the first thing you do prior to drawing blood?
Gather materials, wash hands, verify patient information
why would someone use a butterfly needle?
for small fragile veins
why would someone use a syringe and needle system to draw blood?
it puts less pressure on a vein
why do you let the alcohol dry before inserting a needle?
- prevents contaminating the sample
- allows the alcohol to kill bacteria
- prevents pain to the patient
what angle do you insert the needle?
30 degrees
what is the most common vein used for blood draw?
median cubital
what is the order of draw?
Yellow
Light blue
Red
Tiger top
Green
Lavender
Gray
Royal blue
what is the additive for the yellow tube?
- SPS (anticoagulant)
- ACD (anticoagulant)
what is the additive for the light blue tube?
sodium citrate (anticoagulant)
what is the additive for the red tube?
clot activator
