DEPTH
What is the name of the disposable device used to puncture the skin during a dermal puncture?
What is a butterfly needle also called
Winged infusion set
What is the most commonly used needle gauge for routine adult venipuncture?
21 G
5% - preferred 3%
Prefered cleaning agent prior to venipuncture (NEED % and medical term)
70% isopropyl alcohol
Why should a phlebotomist never use an adult lancet on a premature infant?
The puncture could be too deep, potentially damaging the underlying bone or tissue.
ONE MINUTE
If a patient has small, fragile veins, what needle gauge might you select?
23 gauge
MAX % of total blood that can be removed over a one month period.
10%
Which two fingers are preferred for adult dermal punctures?
Middle and ring finger
2.0 mm
Why should a phlebotomist avoid using a needle that is too small for a routine blood draw?
It can increase the risk of hemolysis and damage to blood cells.
What needle gauge is commonly used for blood donation?
16 - 18 G
Anemia caused by medical tx/procedures - most commonly from frequent or excessive blood draws.
Iatrogenic Anemia
A patient reports a sharp, shooting pain down their arm during venipuncture. What might have happened?
Possible nerve injury. Stop the draw immediately.
Heelstick procedure uses this size lancet (range or single number)
How far above the venipuncture site should the tourniquet generally be placed?
3-4 INCHES
Does a 21-gauge needle have a larger or smaller diameter than a 23-gauge needle?
A larger diameter. The smaller the gauge number, the larger the needle.
Approximately what percentage of whole blood is plasma?
55%
A rare condition that can cause brain damage if left untreated - newborns are tested for this and other metabolic disorders
PKU - PHENYLKETONURIA
What is the maximum recommended puncture depth for an adult finger stick
3.0 mm
What is the vein generally considered the least desirable in the antecubital area? WHY????
Basilic vein, due to its proximity to nerves and arteries.
What type of needle is commonly preferred when drawing blood from an infant or young child with small veins?
23-gauge butterfly needle.
% of students in this class who will pass PBT exam
100%
A patient's hematocrit is 60%. Is this higher or lower than the typical adult reference range, and what could it indicate?
HIGHER - DEHYDRATED??? POLYCYTHEMIA???