Phlebotomy Needles and Tubes
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Questions and Answers

What is the purpose of the sleeve on a multisample needle?

  • To cover the second tip of the needle when not in use
  • To protect the patient's skin from the needle
  • To prevent blood from leaking onto the adapter or tube holder (correct)
  • To ensure the needle remains sterile during the procedure

    • What is a key advantage of using a syringe over a multisample needle for venipuncture?

  • Syringes are less likely to collapse the vein during blood collection
  • Syringes provide a larger sample volume compared to evacuated tubes
  • Syringes allow for a more controlled and gentle vacuum, which is better for fragile veins (correct)
  • Syringes are easier to use and require less skill from the phlebotomist

    • What is the most common size of syringe needle used for venipuncture?

  • 21 gauge, 1 inch long (correct)
  • 20 gauge, 1.5 inch long
  • 22 gauge, 1 inch long
  • 25 gauge, 5/8 inch long

    • What is the purpose of the double-ended needle used in venipuncture?

    <p>To enable the needle to penetrate both the patient's skin and the rubber cap of the collection tube</p> Signup and view all the answers

    What is the purpose of the needle remaining in the patient's vein while one tube is replaced with another?

    <p>To allow for the collection of multiple samples without additional venipunctures</p> Signup and view all the answers

    Which of the following is NOT a recommended practice when inspecting a new needle package?

    <p>Open the package and test the sharpness of the needle on your finger</p> Signup and view all the answers

    What is the primary function of the bevel on a phlebotomy needle?

    <p>It prevents the needle from coring out a plug of tissue</p> Signup and view all the answers

    Which factor should NOT influence the choice of needle length for venipuncture?

    <p>The patient's body mass index (BMI)</p> Signup and view all the answers

    What is the purpose of the hub on a phlebotomy needle?

    <p>It connects the needle to the evacuated collection tube</p> Signup and view all the answers

    Which term refers to the hollow interior of a phlebotomy needle?

    <p>Lumen</p> Signup and view all the answers

    What is the primary purpose of the OSHA directive issued in November 2000?

    <p>To increase the use of safety devices to reduce the number of sharps injuries</p> Signup and view all the answers

    Which of the following needle safety features is described in the text?

    <p>Needles with automatic needle retraction</p> Signup and view all the answers

    Which healthcare worker is most at risk for accidental needle sticks?

    <p>Phlebotomists</p> Signup and view all the answers

    What is the purpose of the Vacutainer Push Button Blood Collection Set described in the text?

    <p>To automatically retract the needle from the vein after blood collection</p> Signup and view all the answers

    What is the estimated number of accidental needle sticks that occur per day nationwide?

    <p>1000</p> Signup and view all the answers

    What is the primary purpose of a winged infusion set or butterfly needle?

    <p>To collect blood samples from small or fragile veins</p> Signup and view all the answers

    What is a key feature of many modern butterfly needles?

    <p>They are designed with a built-in safety shield or sheath</p> Signup and view all the answers

    Which gauge is commonly used for butterfly needles?

    <p>23 gauge</p> Signup and view all the answers

    What is the recommended method for disposing of used butterfly needles?

    <p>Place them in a puncture-resistant sharps container</p> Signup and view all the answers

    How can a butterfly needle be connected to an evacuated collection tube?

    <p>Using a Luer adapter or connector</p> Signup and view all the answers

    What is the primary reason needles must be disposed of immediately after use?

    <p>To avoid accidental needle sticks</p> Signup and view all the answers

    Which of the following is a requirement for a biohazard disposal container?

    <p>The container must be leak-proof and puncture-resistant</p> Signup and view all the answers

    What is the purpose of the prescribed order of draw when collecting multiple blood samples?

    <p>To minimize the effects of contamination among the tubes</p> Signup and view all the answers

    Which of the following is a key consideration when selecting a needle for a venipuncture procedure?

    <p>The size of the patient's vein</p> Signup and view all the answers

    What is the primary purpose of a needle adapter or tube holder in a phlebotomy tray?

    <p>To attach the needle to the evacuated collection tube</p> Signup and view all the answers

    What does the gauge of a needle describe?

    <p>The diameter of the needle's lumen</p> Signup and view all the answers

    In phlebotomy, why might some phlebotomists prefer a shorter needle?

    <p>It makes patients less uneasy</p> Signup and view all the answers

    Why are larger-diameter needles like 21 to 22 gauge used in phlebotomy?

    <p>They deliver blood more quickly</p> Signup and view all the answers

    What is a disadvantage of using smaller-gauge needles like 23 gauge in phlebotomy?

    <p>They result in hemolyzed blood cells</p> Signup and view all the answers

    Why is learning the most appropriate gauge for each clinical situation important for a phlebotomist?

    <p>To prevent damage to tissue during collection</p> Signup and view all the answers

    What is the primary purpose of using a needle adapter during venipuncture?

    <p>To provide a stable connection between the needle and evacuated tube</p> Signup and view all the answers

    Why is it important to choose the correct size of needle adapter for the evacuated tube being used?

    <p>To accommodate tubes of different diameters and maintain a secure fit</p> Signup and view all the answers

    What feature on the needle adapter indicates how far the evacuated tube can be advanced without losing its vacuum?

    <p>The tube advancement mark</p> Signup and view all the answers

    Which statement about evacuated collection tubes is true?

    <p>They are color-coded for easy identification</p> Signup and view all the answers

    What is the purpose of using a multisample needle during venipuncture?

    <p>To allow for the collection of multiple samples from a single venipuncture</p> Signup and view all the answers

    Which of the following statements about needle adapters is false?

    <p>They are opaque to prevent light exposure during collection</p> Signup and view all the answers

    What is a potential advantage of using a winged infusion set during venipuncture?

    <p>It reduces the risk of needle stick injuries</p> Signup and view all the answers

    Which of the following is not a feature of a multisample needle?

    <p>It is color-coded for easy identification</p> Signup and view all the answers

    What is the purpose of the tube advancement mark on a needle adapter?

    <p>To prevent the tube from being pushed too far into the adapter</p> Signup and view all the answers

    Which statement about evacuated collection tubes is false?

    <p>They are all the same size, regardless of the manufacturer</p> Signup and view all the answers

    What is the primary advantage of using a syringe over a multisample needle for venipuncture?

    <p>Syringes allow for a more controlled and gentle vacuum, which is better for fragile veins.</p> Signup and view all the answers

    What is the primary purpose of the retractable rubber sleeve on a multisample needle?

    <p>To cover the second tip of the needle when it is not inserted into a tube.</p> Signup and view all the answers

    What is the most common size of syringe needle used for venipuncture, according to the text?

    <p>22 gauge, 1 inch long</p> Signup and view all the answers

    What is the primary purpose of the needle adapter or tube holder in a phlebotomy tray?

    <p>To provide a secure connection between the needle and the collection tube.</p> Signup and view all the answers

    What is the main function of the double-ended needle used in venipuncture?

    <p>To allow for the collection of multiple blood samples without changing needles.</p> Signup and view all the answers

    What is the primary purpose of the tube advancement mark on a needle adapter?

    <p>To indicate the maximum depth the evacuated tube should be inserted.</p> Signup and view all the answers

    What is the primary reason that needles must be disposed of immediately after use in phlebotomy?

    <p>To comply with OSHA regulations for sharps disposal.</p> Signup and view all the answers

    What antiseptic should not be used routinely due to its interference with some chemistry test results?

    <p>Povidone-iodine solution</p> Signup and view all the answers

    Why is using cotton balls instead of gauze not recommended for stopping bleeding after drawing blood?

    <p>They can get trapped in the clot and tear it when pulled off the puncture site.</p> Signup and view all the answers

    Why should Chlorhexidine gluconate not be used on infants younger than 2 months?

    <p>The infants' skin is too delicate for this antiseptic.</p> Signup and view all the answers

    What is the primary danger of fanning or blowing on a puncture site to speed drying?

    <p>It introduces more bacteria to the site.</p> Signup and view all the answers

    What makes Coban a good alternative for patients with sensitive or fragile skin?

    <p>It sticks only to itself, not to skin.</p> Signup and view all the answers

    What is the primary reason for not using Chlorhexidine gluconate on patients sensitive to iodine?

    <p>Patients sensitive to iodine may have adverse reactions to Chlorhexidine.</p> Signup and view all the answers

    Why should you not fan or blow on a site to speed drying after drawing blood?

    <p>It may increase the risk of contamination.</p> Signup and view all the answers

    What is the primary purpose of using a blood pressure cuff as a tourniquet during phlebotomy?

    <p>To temporarily increase blood flow and make veins more visible</p> Signup and view all the answers

    What is the purpose of using a device that shines a bright light through the patient's skin during phlebotomy?

    <p>To make the veins visible as dark lines within the tissue</p> Signup and view all the answers

    Which statement about antiseptics and disinfectants is true?

    <p>Antiseptics are used to clean living tissue, while disinfectants are used to clean surfaces</p> Signup and view all the answers

    What is the most commonly used antiseptic for cleaning the patient's skin before venipuncture?

    <p>70% isopropyl alcohol (rubbing alcohol)</p> Signup and view all the answers

    What property does isopropyl alcohol have that makes it effective as an antiseptic?

    <p>It is bacteriostatic, meaning it inhibits the growth or reproduction of bacteria</p> Signup and view all the answers

    For maximal effectiveness, how long should the antiseptic be left in contact with the skin before venipuncture?

    <p>30 to 60 seconds</p> Signup and view all the answers

    What is the purpose of using an antiseptic to clean the patient's skin before venipuncture?

    <p>To prevent contamination by normal skin bacteria</p> Signup and view all the answers

    What organization published the document 'Procedures for the collection of diagnostic blood specimens by venipuncture'?

    <p>Clinical and Laboratory Standards Institute</p> Signup and view all the answers

    Which publication discusses the safety of chlorhexidine gluconate used for skin antisepsis in preterm infants?

    <p>J Perinatol</p> Signup and view all the answers

    In the context of blood specimen collection, what does CLSI stand for?

    <p>Clinical and Laboratory Standards Institute</p> Signup and view all the answers

    Which document discusses the tubes and additives for venous and capillary blood specimen collection?

    <p>Clinical and Laboratory Standards Institute</p> Signup and view all the answers

    Which publication includes a comparison of four antiseptic preparations for skin in the prevention of contamination of percutaneously drawn blood cultures?

    <p>J Clin Microbiol</p> Signup and view all the answers

    What is the subject of the document with the code GP41-A6 (formerly H03-A6)?

    <p>Procedures for the collection of diagnostic blood specimens by venipuncture</p> Signup and view all the answers

    Which organization holds the copyright to documents related to blood specimen collection?

    <p>Elsevier Inc</p> Signup and view all the answers

    'Safety of chlorhexidine gluconate used for skin antisepsis in the preterm infant' was published in which journal?

    <p>J Perinatol</p> Signup and view all the answers

    'Comparison of four antiseptic preparations for skin in the prevention of contamination of percutaneously drawn blood cultures' is a study published in which year?

    <p>'Comparison of four antiseptic preparations for skin in the prevention of contamination of percutaneously drawn blood cultures'</p> Signup and view all the answers

    Why are lavender-topped tubes drawn near the end of the blood collection process?

    <p>To prevent falsely high calcium readings.</p> Signup and view all the answers

    Which tube should be drawn first according to the order discussed in the text?

    <p>Red-gray (gold BD Hemogard) tube</p> Signup and view all the answers

    Why is the gray-topped tube usually drawn last in blood collection?

    <p>To minimize falsely high potassium measurements.</p> Signup and view all the answers

    What is the purpose of drawing green tubes after red-gray and gold-topped tubes?

    <p>To minimize interference with EDTA-containing tubes.</p> Signup and view all the answers

    Why may some healthcare institutions allow drawing the glass red-topped tube after the sterile tube?

    <p>To minimize interference with EDTA-containing tubes.</p> Signup and view all the answers

    In what way does the heparin in green tubes differ from EDTA?

    <p>It is less likely to interfere with EDTA-containing tubes.</p> Signup and view all the answers

    Why should sodium fluoride be avoided in blood collection for electrolyte analysis?

    <p>It may damage cell membranes.</p> Signup and view all the answers

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