Pt preparation
What is most common patient preparation instruction before blood test?
Fasting
Which needle system uses a tube with a vacuum to collect blood?
Evacuated needle system
What are the four blood componets?
Plasma, Whte cells, Red cells, and Platelets.
What is the preferred vein for venipuncture?
Median cubital vein
To begin the producure anchor the vein by grasping the skin firmily about how many inches ?
2-3 inches
How long does a pt need to fast before the blood test?
12-hour fast
Which needle system is best for patients with small or fragile veins?
Butterfly system
What are the white cells responsible for?
What are the two alternative veins if the median cubital vein cannot be used?
Cephalic and basilic veins
The standard insertion angle for a typical arm venipuncture is this range.
15 to 30 degrees.
If phlebotomy chair is not available what should you have pt do?
Make a fist with the opposite hand place it behind elbow of the arm being used for the procedure
What is the hollow space inside a needle that allows blood to pass through?
Lumen
What blood components help stoop bleeding by forming clots?
Platelets.
How far above the draw site should the tourniquet be placed?
3-4 inches.
What type of alcohol concentration is used on the disinfectant pads for skin preparation?
70% isopropyl alcohol
A patient becomes very distressed during a blood draw. What should the MA do?
Stop the procedure if necessary and address the patient’s
Why is a syringe needle system useful when drawing blood?
It allows the phlebotomist to control the amount of suction
The liquid portain of the blood obtained after centrifuging. What component is this?
Plasma
How long should a tourniquet stay on?
No longer than 1 minute.
Which two body locations are typically used to perform a capillary puncture?
A fingertip or a heel
If Pt reports that they often faint while having their blood drawn, what anatomical position should they be in?
Semi-fowler's or supine
A patient has small, fragile veins and is likely to bruise easily. Which collection system would be the most appropriate, and why?
Butterfly system, because it uses a smaller, more stable needle and can cause less trauma or bruising.
Blood obtained in a tube that does NOT contain an anticogulant is called?
Clotted blood.
What can happen if a tourniquet is left on too long?
Hemoconcentration.
What equipment should be used immediately after needle removal to dispose of it safely
A biohazard sharps container