Chpt 31 Exam
You need to collect a venous blood specimen from a patient to run FBG. Which of the following would be an inappropriate statement to make to the patient during the procedure
"The procedure will not hurt"
What does the term multisample needle mean?
(C)The needle has a retractable rubber sleeve that covers one end of the needle when a blood collecting tube is not attached.
Which of the following may occur if a tourniquet is applied too tightly
- it may be uncomfortable for the patient - inaccurate tests results may occur - the arterial blood flow may be obstructed - the venous blood flow may be obstructed
Which of the following are characteristics of the brachial artery (located in the antecubital space)
-Pulsates when palpate done - has a more elastic and thicker wall than a vein - if punctured, blood is bright red in color - the hand veins are more susceptible to collapsing ALL THE ABOVE!
Which of the following should NOT be used as a venipuncture site
-Scared skin-Bruised skin-An area is painful to the patient-Burned Skin ALL THE ABOVE!
At what angle should the venipuncture needle be inserted?
15-30 degrees
Which of the following Gauge needles is used most often to perform a routine venipuncture using the vacuum tube method
21 G
Which of the following is the most common size of butterfly needle?
23G
How far from the puncture site should the tourniquet be placed?
3-4 inches above the puncture site
For maximum effectiveness, an antiseptic should be left in contact with the skin for how long?
30-60 seconds
Completely filling a light blue tube will maintain what ratio?
9 parts blood and 1 part sodium citrate.
Your physician has requested an electrolyte profile on a patient. The laboratory directly indicates this test requires 4 ML of serum. Which of the following tubes should be used to collect the specimen
A 10-ML SST
Which of the following tubes should be drawn first?
A. Blood culture tube B. lavender C. Light blue D. Red Ans: Blood culture tube
Which of the following tubes should be drawn first?
A. Green B. Lavender C. Gray D. Red Ans: Red
Which of the following tubes should be drawn first?
A. Green B. Lavender C. Light Blue D. Red Ans: Light blue
After drawing a blood specimen t for an electrolyte profile, the next step is to
Allow the specimen to stand in an upright position for 30-45 min
The size of the evacuated tube choose to obtain a venous blood specimen depends on the
Amount of specimen required for the test
Which of the following techniques can be used to prevent a vein from rolling
Applying firm pressure below and to the the site of the vein
Which of the following is the proper method for identifying a patient before performing a venipuncture
Ask the patient to state his or her full and DOB
If a blood test requires a fasting specimen, what is the best way to verify that the patient is fasting?
Ask the patient when the last time was that he had anything to eat or drink
Which of the veins should be avoided to reduce chances of nerve damage?
Basilic
How should a needle be inserted for venipuncture?
Bevel up, in a smooth quick motion
What may occur if the needle is removed from the arm before removing the tourniquet
Bleeding may occur around the puncture site
Myelo
Bone marrow
Lysis
Break down
Which of the following veins is the most common second choice when the median cubital vein is not appropriate for withdrawing a blood sample?
Cephalic vein
Stasis
Control, stop
When performing a capillary puncture, the finger should NOT be squeezed , to avoid
Diluting the blood sample with tissue fluid
How is serum obtained
From clotted blood that has been centrifuged
Which of the following should be performed if an evacuated tube contains a clot activator
Gently invent the tube five times after drawing it
Which of the following is found in the serum
Glucose Hormones Chloride Antibodies
Which of the following may cause a hematoma?
Going through the back side of the vein when inserting the needle
If the needle is withdrawn before the tourniquet is removed, what is likely to occur?
Hematoma
What is the term for a collection of blood under the skin at the site of a venipuncture?
Hematoma
What is the term for an increase in the ratio of formed elements to plasma
Hemoconcentration
During the venipuncture procedure, a sudden swelling occurs in the are
Immediately remove the tourniquet and then the needle
Hemolysis of a blood specimen results in
Inaccurate test results
Otomy
Incision
phlebotomy
Incision of a vein for the removal of blood ; the collection of blood
Itis
Inflammation of
If a fibrin clot formed in the serum layer of a blood specimen, it would
Interfere with adequate serum collection
When collecting a blood specimen using the vacuum tube method of venipuncture, venous reflux is prevented by
Keeping the patients arm In a downward position
Which of the following is NOT a guideline that should be followed when assembling equipment and supplies for a venipuncture
Label each blood tube with one unique patient identifier
When collecting a venous blood specimen to be transported to an outside laboratory for testing, which of the following should be consulted for information on collecting and handling requirements
Laboratory directory
Which of the following sited can be used to make a skin puncture on an adult
Lateral part of the third fingertip
What color tube is used to collect a blood specimen for a CBC
Lavender
Which of true following evacuated tubes cannot be used to collect serum
Lavender - stoppered
Which of the following is NOT a correct technique for applying a tourniquet
Leaving the tourniquet on for at least 3 min before drawing the specimen
What color stopper tube is used to collect a blood specimen for prothrombin time test
Light Blue
The purpose of applying a tourniquet when performing venipuncture is to
Make the patients veins more visible and easier to palpate
Which of the following antecubital veins I'd considered the best veins to use for a venipuncture
Median Cubital Vein
Which of the following results in patient discomfort during the venipuncture procedure
Moving the needle after it has been inserted into the vein
An evacuated tube with a red stopper contains
Nothing (remember none for glass and clot activator in plastic)
What is the single most important step of the blood collection procedure?
Patient identification
What may occur if a finger puncture is made that is deeper than 3.1 mm
Penetration of the bone
Ous
Pertaining to
What is the term for the small red spots on the skin that are caused by a tightly tied tourniquet?
Petechiae
An individual who collects blood specimens is known as
Phlebotomist
On Standing, a blood specimen to which an anticoagulant has been added separates into
Plasma, Buffy coat, and blood cells
You are performing a venipuncture, and the patient becomes dizzy and is about to faint. Your first priority in this situation should be to
Protect the patient from injury
Which of the following indicates the correct order of draw for the vacuum tube method of venipuncture
RED , Green, Lavender, Gray
How should bleeding be stopped at a venipuncture site?
Remove the needle and apply pressure to gauze over the site
When performing a venipuncture l, which of the following techniques represents a violation of the OSHA standard ?
Removing the plastic holder from the needle for reuse
Which of the following is NOT a method for performing venipuncture
Retractable lancet method
What is the term used to describe a vein that is hardened due to repeated venipunctures, chemotherapy, or disease?
Sclerosed
In which of the following choices are the steps in the correct order
Select equipment, identify patient, collect specimen, stop bleeding, label tubes
What position should be used for a venipuncture if a patient appears nervous or has fainted in the past from a venipuncture
Semi-Fowler
Which of the following represents an error in technique when working with evacuated tubes
Shaking a tube containing an anticoagulant after drawing it
Which of the following veins is most likely to collapse when performing a venipuncture
Small veins
On palpitation, a scarred vein feels
Stiff and hard
What is the medical term for fainting
Syncope
hemolysis
The breakdown of cells
Plasma
The liquid part of the blood consisting of clear, straw-colored fluid that comprises approximately 55% of the blood volume
What may occur if an angle of less than 15 degrees is used to perform the venipuncture
The needle may enter the skin above the vein And not puncture it
Antecubital space
The space located at the front of the elbow
While having a blood sample collected, the patient complains of pain and tingling in the fingers. What is likely the cause ?
The tourniquet is too tight or has been on too long.
Hemoconcentration can occur in which of the following situations?
The tourniquet was left on for 2 minutes
Which may occur if an outdated evacuated tube is used to collect the blood specimen
The tube may no longer have a vacuum
Oma
Tumor or swelling
If you think a vein selected for venipuncture may collapse, you should
Use the butterfly method to perform the venipuncture
Whole blood is obtained by
Using a tube containing an anticoagulant
Which of the following represents an error in technique when obtaining a capillary blood specimen
Using the first drop of blood for the test
Which of the following represents an error in technique when selecting a vein
Using the thumb to palpate the vein
Phlebo
Vein
When should the tourniquet be removed?
While the first tube is filling
Which of the following is another name for the butterfly method of venipuncture?
Winged infusion method
What is the "Order of draw"?
Yellow- Sodium (SPS)-(8-10) Light blue- Sodium citrate-(3-4) Red- None/Clot activator-(0-5) Tiger top- Serum Separator Tube-(5) Gold- Serum Separator Tube-(0-5) Green- Heparin-(8-10) Lavender- EDTA-(8-10) Royal blue- None/EDTA-(8-10) Gray- Sodium fluoride & potassium oxalate-(8-10)
Evacuated tube
a closed glass or plastic tube that contains a premeasured vacuum
Phlebotomist
a health care professional trained in the collection of blood specimens
anticoagulant
a substance that inhibits blood clotting
Hematoma
a swelling or mass of coagulated blood caused by a break in a blood vessel
why should the veins of the hands be used as a venipuncture site only as a last resort?
a. They have a tendency to roll b. They are more difficult to stick c. The procedure is more uncomfortable for the patient d. The hand veins are more susceptible to collapsing. ALL THE ABOVE
Anti
against
Which vein lies on top of the brachial artery?
basilic vein
Ante-
before
Hemato
blood
Osteo
bone
The anticoagulant EDTA works by binding which substance needed for blood clotting?
calcium
Chondro
cartilage
A tube containing thixotropic gel could be used to collect blood for which of the following tests?
chemistry screen
All of the following are reasons for specimen rejection except for what?
collection from the wrong vein
The procedure for the proper disposal of used needled includes
discarding safety needles/collection device as intact unit
Shaking a tube rather than gently inverting it can have what effect on the blood?
hemolysis
Which anticoagulant is used for blood gas determinations?
heparin
osteochondritits
inflammation of the bone and cartilage
What color tube should be collected for coagulation studies?
light blue
Selection of equipment for venipuncture depends on all of the following except?
maximum volume of blood required
What is the appropriate equipment selection when performing venipuncture on fragile, easy-to-collapse veins?
needle and syringe set up
Serum
plasma from which the clotting factor fibrinogen has been removed
Venipuncture
puncture of a vein
Which of the following is the only tube that does not need to be inverted to mix after drawing?
red glass
Which anticoagulant is used for coagulation studies?
sodium citrate
Venous reflux
the backflow of blood (from an evacuated tube) into the patient's vein
Plasma functions in
transporting electrolytes needed by the cells nutrients needed by the tissues picks up wastes from the tissues transports antibodies, enzymes and hormones
Which of the following may result in hemolysis of the blood specimen
using a needle with a small lumen to collect the specimen
