WorksheetsChp 46
Total questions: 77
Worksheet time: 41mins
Venipuncture cannot be done in the medical office but must be performed in an outside laboratory.
True
False
When a physician orders a blood test, the medical assistant draws the patient's blood, ensures proper specimen labeling, and ensures that the blood is stored correctly.
True
False
Veins act as a bridge between capillaries and arteries.
True
False
The heart sends returned blood to the lungs, where oxygen is exhaled and carbon dioxide is inhaled.
True
False
Capillary walls are only one cell thick, so oxygen can pass out of the blood, and waste material can pass into the blood.
True
False
When the body is cool, capillaries dilate to retain heat.
True
False
Point of care testing commonly uses blood drawn from capillaries.
True
False
Veins carry blood toward the heart, and arteries carry blood away from the heart.
True
False
Clinical Laboratory Improvement Amendments (CLIA) set standards to which all laboratories must adhere. These standards include training of personnel and testing and transport of specimens.
True
False
Plasma, the liquid component of blood, is mostly water.
True
False
The formed elements of blood are the red and white blood cells and platelets.
True
False
Hemoglobin in the white blood cells transports oxygen.
True
False
Arteries have one-way valves that prevent the backflow of blood.
True
False
Fibrinogens are minerals found in blood serum.
True
False
The most common capillary puncture site for adults is the palm of the hand.
True
False
Capillary blood collection tubes that contain heparin (to prevent clotting) are identified by a red mark.
True
False
A tourniquet should be left in place for the duration of the blood draw, for at least a minute.
True
False
The most common method of venipuncture is the syringe and needle method.
True
False
Following the Clinical and Laboratory Standards Institute (CLSI) order of draw, blue Vacutainers are drawn first.
True
False
It is appropriate to control the filling of an evacuated blood-collection tube manually.
True
False
The antecubital space is the most commonly used site for venipuncture.
True
FAlse
If a patient shows signs of fainting, first complete the draw, and then have the patient lie down.
True
False
The role of the medical assistant in collecting blood specimens requires knowledge of each of the following EXCEPT ________.
asepsis
basic circulatory anatomy
vascular surgery
phlebotomy equipment
The first step in performing manual capillary puncture is to ________.
assemble the equipment
explain the procedure to the patient
wipe the site of the puncture with alcohol
perform hand hygiene
The last step in performing manual capillary puncture is to ________.
remove the gloves
perform hand hygiene
apply a bandage over clean gauze at the puncture site
record the procedure in the patient's medical record
Red blood cells carry ________ molecules.
plasma
fibrinogen
heparin
hemoglobin
Fibrinogens are ________ involved in clotting.
vitamins
minerals
oxides
proteins
Arteries ________ because of the high pumping pressure they receive from the heart.
stiffen
make a hissing sound
expand
pulsate
The medical assistant performing a venipuncture for a human immunodeficiency virus (HIV) test must ________.
wash hands thoroughly
maintain temperature at a certain level
tell the patient to fast for 8 hours prior
take the blood sample while the patient is lying down
The blood carried in the arteries contains ________.
ammonia
carbon monoxide
oxygen
bile
When the body is cold, the capillaries ________, allowing for less blood flow, which increases the body temperature.
dilate
disintegrate
constrict
explode
Which of the following is NOT one of the three methods of venipuncture?
Vacuum tube method
Caterpillar method
Syringe and needle method
Butterfly method
Vacuum blood tubes come in all of the following sizes, EXCEPT ________.
7 mL
10 mL
15 mL
20 mL
When drawing blood by the Vacutainer method, it is important to fill the tubes in the recommended order. Which one of the following tubes would be filled first?
Lavender
Blue
Red
Yellow
When using the vacuum container method, it is important to use a(n) ________.
small vein
large vein
large artery
areteriole
One drawback to performing the butterfly method is the ________.
cost
mortality rate
pain
availability
Which vein(s) is/are a commonly used site for venipunctures?
Cephalic
Basilic
Median cubital
All of the above
Which of the following sites are commonly used for manual capillary puncture?
Middle finger
Ring finger
Heel of the foot on an infant
All of the above
A patient cannot be forced to undergo a blood draw procedure unless there is ________.
documented evidence that the medical assistant explained the need for the procedure
a signed statement from the physician that the procedure is necessary
a signed court order that specifically overrides the right to refuse to have the procedure done
a state law allowing the health care facility the authority to force the patient to undergo the procedure
If a patient is allergic to latex, a ________ tourniquet can be used.
cotton
paper
rubber
spandex
Needles used for blood draws are ________.
made of copper
hollow
reusable
rounded at the tip
The smaller the gauge number of the venipuncture needle, the ________ the hole within.
flatter
rounder
smaller
larger
The tip of the venipuncture needle is ________.
pointed
beveled
flat
round
General phlebotomy needles are ________ gauge.
12- to 15-
20- to 21-
22- to 25-
25- to 30-
When should venipuncture be avoided?
In patients with syncope
On dry skin
In the antecubital space
On sites with tattoos
The preferred finger for capillary puncture is the ________ of the non-dominant hand.
thumb
pinky finger
index finger
middle or ring finger
Which method of venipuncture is limited in the amount of blood that can be drawn by the size of the equipment used?
Vacuum tube
Syringe and needle
Butterfly
All of the above
Capillary puncture is used for blood tests for all of the following, EXCEPT ________.
glucose levels
cholesterol levels
plasma studies
hematocrit levels
The initials POC stand for ________.
physician on call
phlebotomist on call
patient's overall condition
point of care
It is important to maintain the correct order of draw to ________.
ensure the correct amount of blood is drawn
maintain the drawn blood at the correct temperature
ensure that the tubes are labeled with the name of the correct patient
prevent contamination of a sample with chemicals from another tube
To prevent the backflow of blood, veins are closed by ________.
lumens
arteries
valves
capillaries
________ is the destruction of red blood cells with the release of hemoglobin into the plasma.
Hematocrit
Hemolysis
Hematoma
Hematology
A synonym for fainting or loss of consciousness is ________.
palpate
cannula
hematoma
syncope
When preparing to collect blood from a dialysis patient with a fistula, the phlebotomist must ________.
wait until the dialysis is completed
wait three minutes after dialysis is completed
avoid the fistula site
use a large vein, such as the subclavian
Before inserting the needle, the medical assistant should do all of the following, EXCEPT ________.
make sure the patient understands the procedure
have the patient sit upright for two minutes
ask the patient about allergies and other possible complications
clean the puncture site with an alcohol wipe
There is a higher incidence of injury and contamination when using which venipuncture method?
Sterile syringe and needle method
Vacuum container method
Butterfly needle method
Evacuated tube method
When using laboratory requisition forms to transport specimens, the forms should be ________.
attached to the patient's identification label
filled out with the patient's name and address
completely filled out and attached to the specimen
filled out before the blood is collected
After a lancet is used, it should immediately be placed in a(n) ________ to prevent needlesticks.
biohazard container
trash can
sharps container
any of the above
When responding to a patient with hypoglycemia, the phlebotomist should ________.
get a court order to proceed with the venipuncture
have the patient drink cold water to reduce discomfort
ask the patient about any anticoagulant therapies
give the patient sugar by any means tolerated and call the physician
Venous blood is ________ than arterial blood.
lighter in color
lighter in weight
darker
heavier
Which test requires stat processing?
Hemoglobin
Warfarin level
Calcium
PT INR
The discomfort and swelling from a hematoma with significant swelling formed after a venipuncture can by reduced by ________.
heat
using ibuprofen
cold compress
pressure dressing
Which of the following is NOT a way to make a vein stand out?
Having the patient drink lots of fluids before the procedure
Having the patient gently squeeze a rubber ball
Applying a warm cloth over the site
Applying a cold compress
When performing a venipuncture on a diabetic patient who has not eaten, the medical assistance knows the patient is at risk for ________ and may ________.
a spike in the glucose level of the blood; vomit
dehydration; pass out
insulin shock; convulse
all the above
Patients are required to fast for ________ hours for a glucose tolerance, cholesterol, or lipid level test.
8 to 10
10 to 12
12 to 14
14 to 16
A patient being well-________ is helpful for finding veins.
nourished
rested
hydrated
none of the above
If the wrong tube is used to draw blood for venipuncture, then ________.
it may not be possible to perform a particular test
the phlebotomist must go before the Occupational Safety and Health Administration (OSHA)
the specimen must be relabeled
the blood must be hemolyzed
If the patient does not speak English, and you enlist the help of someone other than the patient to explain the blood draw procedure in the patient's native language, you must have the patient's permission because ________.
the patient's confidential medical information may be disclosed
you cannot verify that the translation is accurate
you can explain the procedure better by speaking slowly and showing examples
the patient may not want an explanation at all
For patients who have bleeding disorders, the medical assistant ________.
may need to apply a pressure dressing after venipuncture
must ensure that the patient takes aspirin before venipuncture
should ask the physician to draw the blood sample
should give the patient a cold compress to constrict the blood vessels
For each tube being filled with blood, the phlebotomist must invert the tube ________.
six to eight times gently
then shake vigorously
to release any excess plasma
for 20 minutes
A beveled needle is cut at a slant and ________.
inserted into the vein facing down
allows blood to flow easily
penetrates the vein easily with minimal damage
inhibits valves from closing when inserted
Failure to obtain blood because the needle was not inserted deeply enough can be remedied by ________.
advancing the needle slightly forward
withdrawing the needle and trying again with a thinner gauge needle
withdrawing the needle and trying again with a thicker gauge needle
withdrawing the needle and reinserting it
Which color Vacutainer tube comes fourth in the order of blood draw?
Yellow
Light blue
Red marbled
Green
Which color Vacutainer tube comes fourth in the order of blood draw?
Green
Lavender
Light green
Pink
A ________-topped Vacutainer is used for cultures on blood or body fluid.
red
yellow
gray
dark blue
What additive does a red-stoppered plastic Vacutainer tube contain?
Lithium heparin
Ethylenediaminetetraacetic acid (EDTA)
Sodium citrate
Clot activator
A glucose tolerance test would require which color Vacutainer tube?
Gray
Red
Light blue
Lavender
