Laboratory & Imaging Studies Week 7
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Questions and Answers

What is the normal range for Hemoglobin (Hgb) levels in adults?

  • 10-14 g/dL
  • 12-18 g/dL (correct)
  • 14-20 g/dL
  • 15-25 g/dL

    • Which of the following is not a part of the specimen collection role of the nurse?

  • Verify the order
  • Transport the sample to the lab
  • Label the sample at the bedside
  • Monitor the patient post-test (correct)

    • Why is it important to report critical test results immediately to a provider?

  • They typically require further testing.
  • They may change the patient's medication.
  • They indicate potential life-threatening conditions. (correct)
  • They are usually errors that need correction.

    • What is the reference range for White Blood Cell Count (WBC)?

    <p>5,000-10,000 mm3</p> Signup and view all the answers

    What is the purpose of patient education prior to specimen collection?

    <p>To help alleviate anxiety and ensure cooperation.</p> Signup and view all the answers

    What is the reference range for Platelet Count?

    <p>100,000-400,000 mm3</p> Signup and view all the answers

    Which of the following components is NOT included in a Complete Blood Count (CBC)?

    <p>Vitamin D levels</p> Signup and view all the answers

    What is the purpose of hand hygiene during specimen collection?

    <p>To reduce the risk of infection.</p> Signup and view all the answers

    What is the reference range for Potassium in mEq/L?

    <p>3.5-5.0</p> Signup and view all the answers

    Which blood component has a reference range of 0-1%?

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

    What is the critical value range for INR in patients undergoing anticoagulant therapy?

    <p>2.0-3.0</p> Signup and view all the answers

    What is the reference range for Blood Urea Nitrogen (BUN) in mg/dL?

    <p>8.0-20</p> Signup and view all the answers

    What is the reference range for Partial Thromboplastin Time (PTT/aPTT) in seconds?

    <p>27.5-37.4</p> Signup and view all the answers

    Which component is monitored in heparin therapy with a reference range of 58-99 seconds?

    <p>Partial Thromboplastin Time (PTT/aPTT)</p> Signup and view all the answers

    Which of the following components in a Complete Metabolic Panel (CMP) does not measure electrolytes?

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

    What is the reference range for sodium in mEq/L?

    <p>135-145</p> Signup and view all the answers

    Study Notes

    Learning Objectives

    • Ability to describe commonly ordered laboratory and imaging studies
    • Knowledge of normal reference values for these studies
    • Understanding of critical test results and the importance of immediate reporting

    Role of the Nurse

    • Specimen Collection:

      • Verify orders, ensure accurate patient identification, and educate patients
      • Practice proper hand hygiene during sample collection
      • Label samples at the bedside to prevent errors
      • Transport collected samples to the laboratory

    • Imaging Studies:

      • Confirm orders and patient identification
      • Prepare patients as necessary for tests
      • Monitor patients post-examination as required

    Laboratory Studies

    • Blood Studies Overview:
      • Commonly performed laboratory tests include Complete Blood Count (CBC) and Basic Metabolic Panel (BMP)

    Complete Blood Count (CBC)

    • Components and Reference Values:
      • WBC Count: 5,000-10,000 mm³
      • Hemoglobin (Hgb): 12-18 g/dL
      • Hematocrit (Hct): 40-50%
      • RBC Count: 4.2-5.9 million mm³
      • Mean Corpuscular Volume (MCV): 80-94 fl
      • Mean Corpuscular Hgb (MCH): 27-32 pg
      • Mean Corpuscular Hgb Concentration (MCHC): 33-38%
      • Red Cell Distribution Width (RDW): 11.5-15.0%
      • Platelet Count: 100,000-400,000 mm³

    Differential Count

    • Neutrophils: 36-71%
    • Lymphocytes: 20-50%
    • Monocytes: 6-13%
    • Eosinophils: 0-6%
    • Basophils: 0-1%
    • Band Forms: 0-1%

    Basic Metabolic Panel (BMP)

    • Components and Reference Ranges:
      • Sodium: 135-145 mEq/L
      • Potassium: 3.5-5.0 mEq/L
      • Calcium: 4.5-5.1 mg/dL
      • Chloride: 97-107 mEq/L
      • CO2: 22-34 mmol/L
      • Glucose: 60-100 mg/dL
      • Blood Urea Nitrogen (BUN): 8.0-20 mg/dL
      • Creatinine: 0.7-1.4 mg/dL

    Complete Metabolic Panel (CMP)

    • Contains 14 components, including those in the BMP

    Coagulation Studies

    • Prothrombin Time (PT): Reference range 10-13.1 seconds
    • International Normalized Ratio (INR):
      • Normal range 0.88-1.16
      • 2.0-3.0 for patients on anticoagulant therapy
      • 2.5-3.5 for patients with mechanical heart valves
    • Partial Thromboplastin Time (PTT/aPTT): Reference range 27.5-37.4 seconds; Heparin therapy monitoring reference range 58-99 seconds

    Blood Cultures

    • Important to collect the first sample, followed by additional samples 15 minutes apart

    Critical Values

    • Certain laboratory results require immediate action and should be reported without delay to ensure appropriate patient care

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    Related Documents

    N5400 Labs_Images_2024 [自動儲存].pptx

    Description

    This quiz focuses on the essential laboratory and imaging studies typically ordered in clinical practice. It covers reference values, critical test results, and the role of nurses in specimen collection. Test your knowledge and understanding of these vital concepts in healthcare.

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