Questions and Answers
What is the reference range for sodium levels in mEq/L?
Which blood component has a reference range of 0-1 %?
What is the reference range for Glucose levels in mg/dL?
For anticoagulant therapy, what is the target INR range?
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What is the reference range for Band forms in white blood cell counts?
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What is indicated by a CO2 level outside the 22-34 mmol/L range?
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What is a critical value for Blood Urea Nitrogen (BUN) that requires immediate action?
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What is the recommended action for performing blood culture draws?
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What is the reference range for Creatinine in mg/dL?
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Which component has the highest reference range among the basic metabolic panel?
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What is the normal reference range for a WBC Count?
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Which of the following is not a step in the specimen collection process?
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What is the normal range for Hemoglobin (Hgb) levels?
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Which of the following blood component measurements has the highest reference range?
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What does a Red Cell Distribution Width (RDW) measurement of 16% indicate?
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Which step is included in the preparation for imaging studies?
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What is the critical aspect of reporting test results?
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The normal reference range for Mean Corpuscular Volume (MCV) is:
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For which blood component does a reference range of 11.5-15.0% apply?
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Which measurement represents the concentration of hemoglobin in a given volume of packed red cells?
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Study Notes
Learning Objectives
- Describe commonly ordered laboratory and imaging studies.
- Identify normal reference values for laboratory and imaging studies.
- Define critical test results and the necessity of immediate reporting to healthcare providers.
Role of the Nurse
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Specimen Collection:
- Verify the laboratory order.
- Ensure proper patient identification and provide education.
- Maintain hand hygiene throughout the process.
- Collect the necessary sample accurately.
- Label the sample at the bedside to prevent errors.
- Transport the sample promptly to the laboratory.
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Imaging Studies:
- Confirm the imaging order.
- Identify and educate the patient.
- Prepare the patient as required for the specified test.
- Monitor the patient after the test, if necessary.
Laboratory Studies
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Complete Blood Count (CBC) Reference Ranges:
- 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 Hemoglobin (MCH): 27-32 pg
- Mean Corpuscular Hemoglobin Concentration (MCHC): 33-38%
- Red Cell Distribution Width (RDW): 11.5-15.0%
- Platelet Count: 100,000-400,000 mm³
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Differential White Blood Cell Count:
- Neutrophils: 36-71%
- Lymphocytes: 20-50%
- Monocytes: 6-13%
- Eosinophils: 0-6%
- Basophils: 0-1%
- Band forms: 0-1%
-
Basic Metabolic Panel (BMP) 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
Advanced Blood Studies
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Coagulation Studies:
- Prothrombin Time (PT): Reference range of 10-13.1 seconds.
- International Normalized Ratio (INR): Reference range 0.88-1.16; therapeutic range is 2.0-3.0 for anticoagulation therapy and 2.5-3.5 for mechanical heart valves.
- Partial Thromboplastin Time (PTT/aPTT): Reference range 27.5-37.4 seconds; for Heparin therapy, the reference range is 58-99 seconds.
-
Blood Cultures:
- Draw two samples 15 minutes apart for accurate results.
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Description
This quiz focuses on commonly ordered laboratory and imaging studies as covered in Week 7 of the course. Students will learn to identify normal reference values and the importance of critical test results. Prepare to apply these concepts in practical nursing scenarios.
