Blood Collection Exam 1 Flashcards
Phlebotomy
blood collection; cutting into a vein
how many layers are there in veins?
3 layers
def of veins
have valves and carry blood back to the heart
how many layers do arteries have?
3 layers
def of arteries
carry blood away from the heart
how many layers do capillaries have?
1 layer
def of capillaries
carries mix of arterial and venous blood and is where exchange of materials w/ tissues takes place (microscopic blood vessels)
3 most common veins in the antecubital space area..
- median cubital vein
- cephalic vein
- basilic vein
order of choices for the veins
- median cubital vein
- cephalic vein
- basilic vein
where is the median cubital vein?
middle of arm
where is the cephalic vein?
runs on the thumb side
may move
where is the basilic vein?
little finger side
least well anchored
near brachial artery
risk of puncturing the artery
Positions for patients when performing blood collection methods
semi-reclining position preferred
OR
sitting in phlebotomy chair
antecubital space
the area in front of the elbow
palpate/palpating
gently touching/pressing down on area to feel texture, size & consistency
requisiton
generated by physicians orders
what information is on a requisition?
- Patient name
- ID number
- DOB
- tests ordered
- physician ordering
- date/time of collection
- time of test
proper way to identify a patient before performing phlebotomy
name & date of birth
most serious laboratory error a phlebotomist can make…
misidentification of the patient
fasting
nothing to eat/drink 12-14 hours before procedure
when should you label blood specimens?
right after you perform phlebotomy
capillary action
process by which blood flows freely into a capillary tube in microcollection procedures
lancet
capillary puncture device
osteomyelitis
inflammation of the bone caused by bacterial infection
