Ch. 31 PHLEBOTOMY
Which of the following techniques can be used to prevent a vein from rolling? A.) Applying firm pressure below and to the side of the vein B.) Applying the tourniquet tightly C.) Inserting the needle at a 10-degree angle D.) Inserting the needle 1/2 inch below the puncture site
A.) Applying firm pressure below and to the side of the vein
When performing a capillary puncture, the finger should NOT be squeezed, to avoid A.) Diluting the blood sample with tissue fluid B.) Excessive bleeding around the puncture site C.) Exposure of the medical assistant to bloodborne pathogens D.) Bruising of the patient's finger
A.) Diluting the blood sample with tissue fluid
If a fibrin clot formed in the serum layer of a blood specimen, it would A.) Interfere with adequate serum collection B.) Result in hemolysis of the blood cells C.) Cause evaporation of the serum D.) Lead to inaccurate test results
A.) Interfere with adequate serum collection
When collecting a blood specimen using the vacuum tube method of venipuncture, venous reflux is prevented by? A.) Keeping the patient's arm in a downward position. B.) Inserting the needle at a 15-degree angle to the patient's arm. C.) Filling the evacuated tube to the exhaustion of the vacuum. D.) Removing the tourniquet before withdrawing the needle from the patient's arm.
A.) Keeping the patient's arm in a downward position.
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? A.) Laboratory Directory B.) Manufacturer's instructions of the test system C.) Physician's Desk Reference D.) Medical Dictionary
A.) Laboratory Directory
All of the following tubes can be used to collect serum except. A.) Lavender-stoppered B.) Red/gray-stoppered SST C.) Gold-Stoppered Hemogard SST D.) Red-stoppered
A.) Lavender-stoppered
The purpose of applying a tourniquet when performing venipuncture is to? A.) Make the patient's veins more visible and easier to palpate. B.) Prevent hemolysis of the blood specimen. C.) Make the procedure more comfortable for the patient. D.) Make it easier to insert the needle.
A.) Make the patient's veins more visible and easier to palpate.
You are performing a venipuncture, and the patient becomes dizzy and is about to faint. Your first priority in this situation should be to A.) Protect the patient from injury B.) Place the patient in a reclining position C.) Protect the blood specimen from hemolysis D.) Obtain the patient's consent for treatment
A.) Protect the patient from injury
Which of the following indicates the correct order of draw for the vacuum tube method of venipuncture? A.) Red, green, lavender, gray B.) Red, lavender, gray, green C.) Lavender, red, gray, green D.) Red, gray, lavender, green
A.) Red, green, lavender, gray
What position should be used for a venipuncture if a patient appears nervous or has fainted in the past from a venipuncture? A.) Semi-Fowler B.) Prone C.) Sims D.) Sitting
A.) Semi-Fowler
What may occur if an angle of less than 15 degrees is used to perform the venipuncture? A.) The needle may enter the skin above the vein and not puncture it. B.) The needle may go completely through the vein C.) The vein may collapse D.) The needle may penetrate a tendon.
A.) The needle may enter the skin above the vein and not puncture it.
Whole blood is obtained by A.) Using a tube containing an anticoagulant B.) Centrifuging a clotted blood specimen C.) Using a red-stoppered tube D.) Using a tube that does not contain an anticoagulant
A.) Using a tube containing an anticoagulant
Which of the following is another name for the butterfly method of venipuncture? A.) Winged infusion method B.) Syringe method C.) Luer adapter method D.) Z-track method
A.) Winged infusion method
After drawing a blood specimen for an electrolyte profile, the next step is to A.) Centrifuge the specimen for 10 minutes B.) Allow the specimen to stand in an upright position for 30-45 minutes C.) Pipet the serum and place it in a transfer tube D.) Place the tube in the refrigerator
B.) Allow the specimen to stand in an upright position for 30-45 minutes
An evacuated tube with a lavender stopper contains A.) Heparin B.) EDTA C.) Nothing D.) Potassium oxalate E.) Sodium citrate
B.) EDTA
Hemolysis of a blood specimen results in A.) Collection of an insufficient quantity of blood B.) Inaccurate test results C.) A contaminated specimen D.) Exposure of the medical assistant to bloodborne pathogens
B.) Inaccurate test results
What color stopper tube is used to collect a blood specimen for a complete blood cell count (CBC)? A.) Red B.) Lavender C.) Gray D.) Green E.) Light blue
B.) Lavender
Which of the following results in patient discomfort during the venipuncture procedure? A.) Allowing the alcohol to dry before making the puncture B.) Moving the needle after it has been inserted into the vein C.) Using the flange to change from one tube to another D.) Removing the needle at the same angle as insertion
B.) Moving the needle after it has been inserted into the vein
What may occur if a fingertip puncture is made that is deeper than 3.1 mm? A.) Damage to nerves in the finger B.) Penetration of the bone C.) Inaccurate test results D.) Excessive bleeding
B.) Penetration of the bone
On standing, a blood specimen to which an anticoagulant has NOT been added separates into A.) Plasma and blood cells B.) Serum and blood cells C.) Plasma, buffy coat, and blood cells D.) Serum, buffy coat, and blood cells
B.) Serum and blood cells
On palpation, a scarred vein feels A.) Elastic and pliable B.) Stiff and hard C.) Soft and pliable D.) Swollen
B.) Stiff and hard
Which of the following may result in hemolysis of the blood specimen? A.) Storing evacuated tubes at room temperature B.) Using a needle with a small lumen to collect the specimen C.) Allowing the evacuated tube to fill to the exhaustion of the vacuum D.) Removing the needle before removing the tourniquet E.) All of the above
B.) Using a needle with a small lumen to collect the specimen
Which of the following represents an error in technique when selecting a vein for venipuncture? A.) Examining the antecubital veins of both arms B.) Using the thumb to palpate the vein C.) Determining the size and depth of the vein D.) Tracing the path of the vein
B.) Using the thumb to palpate the vein
If you think a vein selected for venipuncture may collapse, you should A.) use an 18-gauge needle to collect the specimen B.) use the butterfly method to perform the venipuncture C.) Fill the tube only one-half full with blood D.) Insert the needle slowly into the vein
B.) use the butterfly method to perform the venipuncture
You need to collect a venous blood specimen from a patient to run an FBG. Which of the following would be an inappropriate statement to make to the patient during this procedure? A.) "Which arm was used in the past to draw a blood from you?" B.) "Please do not move during this procedure." C.) "This procedure will not hurt." D.) When did you last eat or drink?"
C.) "This procedure will not hurt."
Which of the following gauge needles is used most often to perform a routine venipuncture using the vacuum tube method? A.) 16 G B.) 18 G C.) 21 G D.) 25 G
C.) 21 G
Your physician has requested an electrolyte profile on a patient. The laboratory directory indicates this test requires 4 mL of serum. Which of the following tubes should be used to collect the specimen? A.) A 4-mL SST B.) A 7-mL SST C.) A 10-mL SST D.) A 4-mL Lavender-stoppered tube E.) A 7-mL Lavender-stoppered tube
C.) A 10-mL SST
Which of the following is the proper method for identifying a patient before performing a venipuncture? A.) State the patient's full name and DOB and ask the patient to verify this information. B.) Ask the patient to state his or her full name and date of last visit. C.) Ask the patient to state his or her full name and DOB. D.) Ask the patient for two forms of written identifications.
C.) Ask the patient to state his or her full name and DOB.
What may occur if the needle is removed from the arm before removing the tourniquet A.) The patient may experience pain. B.) The blood specimen may become hemolyzed. C.) Bleeding may occur around the puncture site. D.) The evacuated tube may not fill completely. E.) All of the above.
C.) Bleeding may occur around the puncture site.
How is serum obtained? A.) From whole blood that has been centrifuge B.) By using a tube containing an anticoagulant C.) From Clotted blood that has been centrifuge D.) From whole blood that has been left standing
C.) From Clotted blood that has been centrifuge
Which of the following should be performed if an evacuated tube contains a clot activator? A.) Push the posterior needle through the tube stopper before puncturing the vein. B.) Fill the tube only half-full with blood. C.) Gently invert the tube five times after drawing it. D.) Centrifuge the tube immediately after drawing it.
C.) Gently invert the tube five times after drawing it.
During the venipuncture procedure, a sudden swelling occurs in the area around the puncture site. You should A.) Apply pressure to the area with an antiseptic wipe B.) Continue with the venipuncture C.) Immediately remove the tourniquet and then the needle D.) Call 911
C.) Immediately remove the tourniquet and then the needle
An evacuated tube with a red stopper contains A.) Heparin B.) EDTA C.) Nothing D.) Potassium oxalate E.) Sodium citrate
C.) Nothing
On standing, a blood specimen to which an anticoagulant has been added separates into A.) Plasma and blood cells B.) Serum and blood cells C.) Plasma, buffy coat, and blood cells D.) Serum, buffy coat, and blood cells
C.) Plasma, buffy coat, and blood cells
Which of the following is NOT a method for performing venipuncture? A.) Butterfly method B.) Syringe method C.) Retractable lancet method D.) Vacuum tube method
C.) Retractable lancet method
which of the following represents an error in technique when working with evacuated tubes? A.) Using a computer bar code label to identify the tube B.) Filling tubes to the exhaustion of the vacuum C.) Shaking a tube containing an anticoagulant after drawing it D.) Removing the last tube from the plastic holder before removing the needle.
C.) Shaking a tube containing an anticoagulant after drawing it
What may occur if an outdated evacuated tube is used to collect the blood specimen? A.) The specimen may become hemolyzed. B.) The tube may crack. C.) The tube may no longer have a vacuum. D.) The test results may be inaccurate.
C.) The tube may no longer have a vacuum.
Phlebotomy includes which of the following? A.) Skin punctures B.) Arterial punctures C.) Venipuncture D.) All of the above
D.) All of the above
The size of the evacuated tube you choose to obtain a venous blood specimen depends on the A.) size of the patient's veins B.) Patient's clinical diagnosis C.) Color of the evacuated tube stopper D.) Amount of specimen required for the test
D.) Amount of specimen required for the test
All of the following are guidelines that should be followed when assembling equipment and supplies for a venipuncture except? A.) Check each blood tube for damage. B.) Do not substitute one blood tube for another. C.) Check the expiration date of the blood tubes. D.) Laber each blood tube with one unique patient identifier.
D.) Laber each blood tube with one unique patient identifier.
Which of the following sites can be used to make a skin puncture on an adult? A.) Earlobe B.) Lateral part of the index fingertip C.) Tip of the little finger D.) Lateral part of the third fingertip
D.) Lateral part of the third fingertip
All of the following are correct techniques for applying a tourniquet except. A.) Placing the tourniquet 3-4 inches above the bend in the elbow. B.) Asking the patient to clench his or her fist. C.) Applying the tourniquet so that it is snug, but not tight. D.) Leaving the tourniquet on for at least 3 minutes before drawing the specimen.
D.) Leaving the tourniquet on for at least 3 minutes before drawing the specimen.
Which of the following antecubital veins is considered the best vein to use for a venipuncture? A.) Basilic vein B.) Cephalic vein C.) Brachial vein D.) Median cubital vein
D.) Median cubital vein
An individual who collects blood specimens is known as a(n) A.) Vampire B.) Venipuncturist C.) Optometrist D.) Phlebotomist
D.) Phlebotosmist
When performing a venipuncture, which of the following techniques represents a violation of the OSHA standard? A.) Applying the tourniquet 1 inch above the bend in the elbow B.) Using a small-gauge needle to collect the specimen C.) Not labeling the blood tube D.) Removing the plastic holder from the needle for reuse
D.) Removing the plastic holder from the needle for reuse
Which of the following veins is most likely to collapse when performing a venipuncture? A.) Veins that roll B.) Scarred veins C.) Sclerosed veins D.) Small veins
D.) Small veins
Which of the following represents an error in technique when obtaining a capillary blood specimen? A.) Warming the patient's finger by massaging it B.) Allowing the antiseptic to dry before making the puncture C.) Making the puncture perpendicular to the lines of the fingerprint D.) Using the first drop if blood for the test
D.) Using the first drop if blood for the test
Which of the following are characteristics of the brachial artery (located in the antecubital space)? A.) Pulsates when palpated B.) Has a more elastic and thicker wall than a vein C.) If punctured, blood is bright red in color D.) If punctured, patient feels more than usual amount of pain E.) All of the above
E.) All of the above
Which of the following is found in the serum of blood? A.) Glucose B.) Hormones C.) Chloride D.) Antibodies E.) All of the above
E.) All of the above
Which of the following may occur if a tourniquet is applied too tightly? A.) It may be uncomfortable for the patient. B.) Inaccurate test results may occur. C.) The arterial blood flow may be obstructed. D.) The venous blood flow may be obstructed. E.) All of the above
E.) All of the above
Why should the veins of the hand be used only as a last resort when performing a venipuncture? A.) The 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. E.) All of the above.
E.) All of the above.
Which of the following should NOT be used as a venipuncture site? A.) Scarred skin B.) Bruised skin C.) An area that is painful to the patient D.) Burned skin E.) All of the following
E.) All of the following
What color stopper tube is used to collect a blood specimen for a prothrombin time test? A.) Red B.) Lavender C.) Gray D.) Green E.) Light blue
E.) Light blue
