Chapter 7-9 Flashcards
When performing a venipuncture procedure, what position should the bevel of the needle be pointed at?
Bevel up
What should a phlebotomist do if the information on an inpatient’s ID bracelet is not identical to the information on the phlebotomy test requisition and labels?
Cannot draw the sample until ID issue is required
What should the phlebotomist tell the patient to make the vein become more prominent during initial step of venipuncture procedure?
Make a fist
After cleaning the venipuncture site with alcohol, the phlebotomist should?
Allow it to air dry on its own
While performing a venipuncture using a 10 ML to the vein suddenly collapsed. To prevent this the phlebotomist should?
Use the 5 ML evacuated tube
What tube is used for coagulation test?
Light blue
After drawing a six-year-old child on a bed with pushed down bed rails, the phlebotomist should do what?
Return the rail to the upright position
What tube contains no additive (plain)?
Red
This condition might happen after repeated venipuncture on the same vein?
Phlebitis
Give the proper order of draw in the given routine laboratory tests: CBC, cholesterol, triglycerides, glucose
Red, lavender, gray
After centrifuging a tube with anticoagulant, what substance will be forced at the bottom of the tube?
Red blood cells
Blood collection tubes are labeled when?
Immediately after specimen collection
If a patient adamantly refuses to have blood drawn, you should?
Notify the patient’s nurse or physician
When doing dermal stick procedure which blood collection should you do first?
Smear
When the patient’s arm is swollen with excess fluids, this condition is called what?
Edema
What is the additive in the gray tube?
Potassium oxalate
What will rise to the top of an unclotted blood sample?
Plasma
What is the purpose of the rubber sleeve end of the Vacutainer needle?
Prevents seepage of blood into the adapter (hub) to be able to draw multiple tubes
After an accidental needlestick, what should you do first?
Clean the area with alcohol/antibacterial soap immediately
A winged infusion set is typically used for what?
Difficult and hand veins
How many times may a needle be used before discarding it?
1
How long should a tourniquet be left on the arm without changing any laboratory results?
60 seconds
You are in the process of collecting a specimen by venipuncture. You hear a hissing sound and the blood flow stops. What has most likely happened?
The tube has lost its vacuum
What is the initial step when performing a venipuncture procedure?
Identify the patient
EDTA prevents coagulation by what ?
Binding calcium
Tubes with gray stoppers are used for what?
Glucose tolerance test (GTT)
At the middle of a venipuncture procedure, what should you do if the puncture site starts to swell?
Release the tourniquet, dispose needle and immediately apply pressure
What causes evacuated tubes to fill with blood automatically?
Tube vacuum
What is the action of sodium citrate additive when used in coagulation studies?
It binds to calcium to prevent the clotting process
What laboratory test will be mostly affected if you failed to invert the tube properly?
CBC
Which vein is often the only one that can be palpated in an obese patient?
Cephalic
What tube should you use for serum createnine clearance test?
Red
How do you cleanse the puncture site while doing a circular motion?
From the center to the periphery
What is the most critical error a phlebotomist can make?
Misidentifying a patient specimen
What type of alcohol is used for routine venipuncture?
70% isopropyl alcohol
At what angle should a venipuncture needle penetrate the skin?
15 to 30 degrees
When a lipid panel is ordered, what is required for the patient to do so that it can give better results for the physician to interpret?
Draw the blood after fasting for at least 10 hours
An equipment created to provide access for dialysis and is a permanent fusion of artery and vein?
Fistula (arteriovenous shunt)
An increase in the ratio of formed elements to plasma is called what?
Hemoconcentration
Mass of blood that can be caused by blood leaking from a blood vessel during or following venipuncture
Hematoma
While performing venipuncture you see a good flow of blood entering the first tube. What should you do next?
Tell patient to open his/her hand
It is not a good idea to collect a CBC specimen from a screaming infant because what?
White blood count may be falsely elevated
You have no choice but to draw a specimen from a site with hematoma. Where should you obtain the specimen?
Distal to the hematoma
Tiny, non raised red spots that appear on the patient’s skin when tourniquet is applied
Petichiae
What is the purpose of glass particles in the serum separator tubes?
Accelerate coagulation
