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WorksheetsChapter 7 and 8
Total questions: 31
Worksheet time: 14mins
After spinning down a sample, you see that the serum has a reddish tint instead of the expected yellow. Which of the following can explain this observation?
oxidation of the sample
carbon dioxide from cell metabolism
hemoglobin from ruptured RBCs
lipids in a non-fasting sample
While looking for a site to draw blood, you are unable to use a patient’s upper arm. Which site should you next look at?
feet
hands
artery
capillaries
Venipunctures are usually performed in the antecubital area. Which vein is typically the best to draw from?
cephalic
basilic
median cubital
lateral cubital
Which of the following can affect the quality of a blood sample and can be caused by leaving the tourniquet on too long before the blood draw?
hematoma
hemolysis
hemoconcentration
arterial hemorrhage
During a blood draw, blood leaks out of the vein and begins pooling under the skin. This complication is known as which of the following?
hematoma
hemolysis
thrombosis
syncope
Before drawing a patient in isolation a phlebotomist should:
follow all posted precautions.
never enter an isolation room.
work as quickly as possible.
wear two pairs of gloves.
When drawing blood samples, which of the following should be performed first?
clean the site
find the vein
apply the tourniquet
identify the patient
Under which of the following conditions would you avoid a site for venipuncture?
edematous arm
arm with IV
hematoma
all of these
While drawing blood with a vacuum tube, you watch the vein collapse. This is caused by:
the needle being too large for the vein.
blood being draw too quickly from the vein.
the tourniquet being too loose.
rolling view.
When drawing blood from a patient’s hand, which collection system would be most appropriate?
straight needle and syringe
winged infusion set
evacuated tube system
none of these
The first tube is discarded when you are drawing from an indwelling line in order to:
remove tissue fluid.
clean any bacterial contamination.
remove heparin or saline contamination.
make the blood flow faster.
What is the primary source of information when labeling the patient’s sample in the hospital?
patient’s nurse or doctors
patient’s family or guests
name label at the foot of the bed
patient’s verification of information
Which of the following is a reason that can lead to a failed venipuncture?
using an evacuated tube system without a butterfly
locating and selecting the best vein present
using a winged infusion setup and syringe
the bevel pressed against the vein wall
A patient on coagulation therapy will tend to bleed more readily. How long should pressure be kept on a site after a venipuncture if the patient shows minimal clotting?
until bleeding stops
5 minutes
30 minutes
60 minutes
While preparing to draw a patient, you notice an IV in their left arm. Why should this arm be avoided?
poor clot formation and bleeding risks
potential lymphostasis and patient injury
contamination of IV fluid in blood
poor circulation and increased infection risk
Hemolysis has a number of causes. Which of the following is not a cause of hemolysis?
pain felt during blood collection
presence of alcohol on the skin
strong plunger pressure
rough mixing or shaking
While using printed labels, which of the following must you add at the time of collection?
collection date, time, and initials
patient’s room number and DOB
location of blood draw and collection date
patient’s first and last name and DOB
A known diabetic patient passes out during a fasting lab test. Which of the following is the likely cause?
hypoglycemia
lipemic sample
nausea
cardiac arrest
Serum drawn from a patient with severe jaundice is described as which of the following?
icteric serum
jaundice serum
hemolyzed serum
lipemic serum
Your patient has a history of damaged and collapsing veins. Which of the following can increase the odds of a successful blood draw?
using a syringe
using evacuated tube system
capillary collection
none of these
Which of the following items are minimum requirements for sample labeling?
the patient’s complete name, the identification number, date, time of collection, and physician
the patient’s complete name, the identification number, date, time of collection, and collector’s initials
the patient’s complete name and the identification number
the patient’s complete name, date, and time of collection
Which of the following complications can be prevented by reclining the patient?
syncope
hypoglycemia
hematoma
convulsions
Diabetic shock can look like which of the following patient complications.
syncope
convulsions
nerve damage
allergic reaction
Which of the following is the most common patient reaction to a venipuncture?
hematoma
fainting
pain
hyperventilation
Which antecubital vein is considered the best vein for venipuncture?
Medial cubital
Basilic
Cephalic
Brachial
A lavender top tube contains...
Nothing
EDTA
Potassium oxalate
Sodium citrate
What color tube is used to draw a CBC?
Red
Green
Lavender
Light blue
Whole blood is obtained by
using a tube with an anticoagulant
centifuging a clotted blood specimen
using a red-stopper tube
using a tube that does not contain an anticoagulant
What is the additive in the red tube?
EDTA additive
Thixotropic gel
None or clot activator
Sodium Fluoride
What is the additive in the light blue tube?
Sodium Fluoride
Media broth
EDTA additive
Sodium Citrate
What color tube is used to draw a Prothrombin Time
Red
Green
Lavender
Light blue
