Blood Collection Procedures for Geriatric Patients Quiz
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Questions and Answers

What is the recommended gauge size for venipuncture in the geriatric population?

  • 18 gauge
  • 27 gauge
  • 21 gauge (correct)
  • 25 gauge
  • What is the typical range for the needle length used in blood collection tubes for small veins?

  • 1 inch - 2 inches
  • ⅜ inch - ½ inch
  • ½ inch - ¾ inch (correct)
  • 2 inches - 3 inches
  • Which action can lead to the loss of vacuum in a blood collection tube?

  • Using the tube within its expiration date
  • Dropping the tube (correct)
  • Proper storage
  • Manufacturer error
  • What mechanism of action do anticoagulants like Ethylenediaminetetraacetic acid (EDTA) and Citrates use?

    <p>Binding to calcium</p> Signup and view all the answers

    Why is the order of draw crucial in blood collection?

    <p>To prevent bacterial contamination</p> Signup and view all the answers

    What is an essential item worn by phlebotomists during the procedure to maintain asepsis?

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

    What is the main cause of petechiae according to the text?

    <p>Low platelet counts</p> Signup and view all the answers

    What is the primary cause of anemia as described in the text?

    <p>Decrease in hemoglobin levels</p> Signup and view all the answers

    In the context of venipuncture, what is the most common cause of a lipemic sample?

    <p>High fat content in the blood</p> Signup and view all the answers

    Why should the patient be asked about allergies before performing procedures?

    <p>To be cautious of allergic reactions to substances used</p> Signup and view all the answers

    What is the main function of the systemic circulatory system?

    <p>Supplying all cells with oxygen and nutrients</p> Signup and view all the answers

    What causes a sample to be considered icteric according to the text?

    <p>Elevated bilirubin levels in the serum or plasma</p> Signup and view all the answers

    What is the primary factory for the production of blood cells in adults?

    <p>Bone marrow</p> Signup and view all the answers

    Which component of the blood aids in the clotting process?

    <p>Platelets (Thrombocytes)</p> Signup and view all the answers

    What is the life span of a platelet (Thrombocyte) once it is released into the bloodstream?

    <p>9-12 days</p> Signup and view all the answers

    Which component of the formed elements portion of blood lacks a nucleus?

    <p>Erythrocytes (RBC)</p> Signup and view all the answers

    Which part of the blood separates during centrifugation to form a hazy layer?

    <p>Buffy coat</p> Signup and view all the answers

    What is the iron-containing pigment found in red blood cells?

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

    What is the purpose of using anticoagulants in producing plasma samples?

    <p>To prevent the conversion of fibrinogen to fibrin</p> Signup and view all the answers

    What is the function of an instrument that spins blood before centrifuging a sample for serum?

    <p>To prevent clot formation</p> Signup and view all the answers

    Which substance is crucial in the process where prothrombin converts to fibrin during clot formation?

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

    How does the presence of anticoagulants affect the condition of plasma in a blood sample?

    <p>It keeps plasma like how it was in the blood</p> Signup and view all the answers

    What is the main component found in a clot that contains all formed elements intertwined together?

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

    What precaution should a phlebotomist take when drawing blood from a patient with psychiatric disorder?

    <p>Wear additional protective equipment</p> Signup and view all the answers

    Why might a patient with damaged or collapsing veins be more difficult to draw blood from?

    <p>Their veins may be inaccessible due to various reasons</p> Signup and view all the answers

    What is recommended as the best way to obtain blood from a vein that has a tendency to collapse?

    <p>Use a syringe to draw blood</p> Signup and view all the answers

    Why do patients who are resistant often take more time to convince that sample collection is necessary?

    <p>They may not fully understand the importance of the procedure</p> Signup and view all the answers

    Why might it be challenging to feel veins in patients with localized tissue globules under their skin?

    <p>The tissue globules can resemble veins, making it hard to differentiate</p> Signup and view all the answers

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