- The metric system is frequently utilized in the medical field. The volume of a liquid is measured in terms of:
Your answer:
meters
ounces
liters
degrees celsius
- Military time is frequently used in the medical field to reduce clerical errors due to illegible handwriting. A sample is to be collected at 1830. Select the appropriate clock time this indicates:
Your answer:
6:30 pm
6:30 am
5:30 am
5:30 pm
- There are three components in the chain of infection associated with nosocomial infections. The component which involves objects in the environment colonized with microorgamisms is:
Your answer:
source
mode of resistance
mode of transmission
susceptible host
- The isolation techniques now recommended by the CDC which collapses isolation catergories into a single set of 3 categories is known as:
Your answer:
universal precautions
standard precautions
contact isolation
body substance isolation (BSI)
- A healthcare worker has an accidental needle stick exposure. Which of the following test MUST be performed on the employee and, if known, the source patient:
Your answer:
hepatitis B
HIV
hepatitis B, HIV and RPR
hepatitis B and HIV
- Which of the following capillary tubes have no additive:
Your answer:
puple ring
blue ring
red ring
green ring
- Which of the followng is the most appropriate site for performing a capillary puncture on an 11 month old infant who is walking:
Your answer:
great toe
ear lobe
heel
finger
- When performing a capillary puncture the first drop of blood must be wiped away because:
Your answer:
it contains too must arterial blood
it is contaminated with tissue fluids
it is contaminated with alcohol
it may be too cold
- The correct site for performing a heelstick puncture is:
Your answer:
plantar surface on the big toe side of the heel
arch area
calcaneous bone
posterior curvature of the heel
- The gauge of the winged infusing set (butterfly needle) is:
Your answer:
21
25
23
19
- Which of the following patients would be the most appropriate candidate for blood collection using a butterfly needle:
Your answer:
14 year old who is scared of the blood collection procedure
newborn
45 year old with normal veins
65 year old with fragile veins
- Which of the following may cause hemolysis when performing a venipuncture?
Your answer:
applying strong pressure when pulling back on plunger of a syringe
drawing from a site with a hematoma
a stick where the technician probed with the needle to find the vein
all of the above
- Which of the following are appropriate sites for a venipuncture?
Your answer:
a vein located in the antecubital area that is not visible but is easily palpated. No pulse is noted.
a vein located on the back of the hand that is resilient and moves when palpated.
a vein located in the antecubital area on the same side as a mastectomy performed several years previously
a and b only
- The maximum time a tourniquet may be tied before hemoconcentration may adversly effect test results is:
Your answer:
4-5 minutes
2-3 minutes
1-2 minutes
3-4 minutes
- Which of the following can adversly affect the validity of the laboratory test results?
Your answer:
sample handling, processing and storage
patient identification
the time of the last dose of a medication
all of the above
- In performing venipuncture, a hematoma forms. Correct statements regarding this phenomenon include all of the following EXCEPT:
Your answer:
if another venipuncture site is unavailable, draw distally from the hematoma
remove the needle before removing the tourniquet to prevent hematoma formation
the hematoma forms when blood leaks from the vein into surrounding tissues
if a venipuncture area begins to swell, stop drawing blood
- While performing a venipuncture, the blood suddenly stops flowing into a vacutainer tube. The best corrective action is to:
Your answer:
have the patient open and close his/her hand slowly
pull back slightly on the holder
rotate the needle holder clockwise 1/4 turn
take the tube off and replace with a new tube
- Identify the correct order of draw or transfer when obtaining a sample for a PT, PTT, and Factor VII only:
Your answer:
Gel separator tube (black/red stopper), then NaCitrate (blue stopper)
NaCitrate tube (blue stopper) only
Plain, non-additive (red stopper), then NaCitrate (blue stopper)
EDTA tube (lavender stopper), then NaCitrate) blue stopper)
- Which of the following techniques help prevent hemolysis of the blood sample when performing a skin puncture?
Your answer:
after cleaning the site with alcohol, ensure the site is dried thoroughly
allow the free flowing blood to form a drop and touch the collection tube to the drop
gently mix the micro-collection tubes containing anticoagulant
all of the above
- Always insert the needle bevel ______________
Your answer:
down
up
sideways
all of the above
- Which of the following procedures is NOT done to obtain blood if a problem occurs during collection.
Your answer:
loosen the tourniquet
reposition the needle
try another vacutainer tube
use an IV line
- When drawing blood you should always follow universal ___________
Your answer:
precautions
suggestions
laws
mandates
- Needles are used once and _________________
Your answer:
given to the patient
discarded in a biohazard sharps container
returned to the manufacturer for sharpening and sterilization
discarded in the trash
- The tourniquet is applied ____________ the site.
Your answer:
above
directly over
beneath
all of the above
- _____ gauge needles are commonly used for drawing blood
Your answer:
10
18
21
30
- A student in a hurry does not wait for the site cleaned with antiseptic to dry before probing the site about 8 times with too small a needle before finally managing to get blood by using a syringe and drawing back forcefully on the plunger. What specimen artfact is probably present as a result:
Your answer:
clotting
increase in creatine kinase
hemolysis
elevation in WBC count
- Venipuncture at sites with each of the following could affect test results EXCEPT:
Your answer:
in the region of a hematoma
above an IV line
at a mastectomy site
near a tattoo
- The greatest real or potential hazard to the patient when performing venipuncture is caused by failure to:.
Your answer:
use the correct vacutainer tube
wear gloves
properly identify the patient
prevent hematoma formation
- Which of the following procedures is NOT part of universal precautions when performing a venipuncture.
Your answer:
do not recap, break, or resheath needles
change gloves between each patient
inform the patient of your HIV status
wear a lab coat or gown
- Which of the following groups of health care providers has the highest rate of needlestick injury:
Your answer:
laboratory technicians
medical students
physicians
nurses
- An example of a susceptible host is
Your answer:
a diabetic patient
an infant
an elderly patient
all of the above
- According to Universal Precautions
Your answer:
all body fluids are considered infected with bloodborne pathogens
one must wear gloves and take other precautions only if visible blood is present
a and b
all blood is considered infected with HIV and HBV
- The three most dangerous types of infections found in medical waste are
Your answer:
hepatitis B and hepatitis C
HIV
rocky mountain spotted fever and escherichia coli
a and b
- The rational for pointing the hands downward during the handwashing procedure is:
Your answer:
friction assists in removing organisms and dirt
running water is not sufficient to remove dirt particles under the nails
sinks are considered contaminated
water will not run back up the arms for further contamination
- The body's barrier to infection is:
Your answer:
all of the above
acid with the gastrointestinal system
the skin
mucous membranes
- If a patient states that they have a history of fainting during venipuncture
Your answer:
they should never have their blood drawn
they should be placed in a position where they cannot hurt themselves
make cetain they are seated in a chair
they can never be outpatients but must be admitted to the hospital before venipuncture
- Excessive bleeding after venipuncture may be due to
Your answer:
anticoagulation medications
applying the tourniquet too tightly
fainting during the procedure
seizures
- Common causes of hematomas that form during a venipuncture include
Your answer:
excessive probing with the needle
the needle is only partially in the vein
the needle has penetrated all the way through the vein
a and b
- Bandages should remain on the venipuncture site for a minimum of:
Your answer:
30 minutes
1 hour
5 minutes
15 minutes
- Collapsed veins are common in the elderly due to:
Your answer:
placing the tourniquet on too tightly
anticoagulation medication
loss of elasticity in the wall of the vein
using a large bore needle
- Petecchiae are usually found:
Your answer:
under the tourniquet
on the front of the arm
at the site of the venipuncture
under the bandage
- Needles are sterile until
Your answer:
the plastic sleeve is removed
the needle is inserted into the patient's arm
the seal is broken
it is wiped with alcohol
- A sharp's container is identified by its bright _____ color
Your answer:
blue
green
brown
red
- The most common antiseptic used in venipuncture is
Your answer:
EMLA
betadine
70% isopropyanol
iodine
- The following conditions should prevent a site from being selected for venipuncture
Your answer:
edema
hematoma
scarring
all of the above
- What is necessary for an infection to occur?
Your answer:
pathogenic organism
portal of entry and exit
menas of transmission and susceptible host
all of the above
- Blindly probing with the needle to find a vein is not recommended because
Your answer:
it is painful
nerve damage may occur
the vein may be damaged
all of the above
- If you are unsuccessful on the first attempt to obtain blood via venipuncture, the normal procedure is to:
Your answer:
call the patient's doctor
call another technician
tell the nurse
try again
- All of the following are signs that a patient may faint during a venipuncture EXCEPT:
Your answer:
sneezing uncontrollably
feeling light-headed
suddenly turning pale
complaining of feeling nauseous
- The most commonly encountered allergy that you should be concerned with is:
Your answer:
antiseptics
adhesive
evacuated tubes
latex gloves