Interpreting Arterial Blood Gas Results
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Questions and Answers

What is the patient's primary acid-base disorder?

  • Metabolic alkalosis
  • Respiratory alkalosis
  • Metabolic acidosis
  • Respiratory acidosis (correct)

    • What is the patient's oxygenation status?

  • Hyperoxemic
  • Euoxemic
  • Hypoxemic (correct)
  • Normoxemic

    • What is the patient's PaCO2 compared to the normal range?

  • Within the normal range
  • Slightly above the normal range
  • Below the normal range
  • Significantly above the normal range (correct)

    • What is the patient's pH compared to the normal range?

    <p>Slightly below the normal range</p> Signup and view all the answers

    What is the patient's base excess compared to the normal range?

    <p>Within the normal range</p> Signup and view all the answers

    Study Notes

    Patient Overview

    • 63-year-old female admitted with shortness of breath.
    • Patient appearance: drowsy and on supplemental oxygen (10L via mask).

    Arterial Blood Gas (ABG) Results

    • PaO2: 7.0 kPa (below normal range of 11-13 kPa).

      • Corresponding value: 52.5 mmHg (normal range is 82.5-97.5 mmHg).
      • Indicates severe hypoxemia.

    • pH: 7.29 (acidic, below normal range of 7.35-7.45).

      • Suggests acidemia.

    • PaCO2: 9.1 kPa (elevated, normal range is 4.7-6.0 kPa).

      • Corresponding value: 68.2 mmHg (normal range is 35.2-45 mmHg).
      • Indicates hypercapnia, potentially leading to respiratory acidosis.

    • HCO3–: 26 mEq/L (within normal range of 22-26 mEq/L).

      • Suggests that metabolic compensation is likely occurring but is not sufficient.

    • Base excess: +1 (slightly positive, normal range is -2 to +2).

      • Indicates a slight metabolic alkalosis or compensation response.

    Clinical Implications

    • The combination of hypoxemia, acidemia, and hypercapnia points towards a respiratory failure scenario.
    • Drowsiness may indicate significant hypoxia or hypercapnia affecting the central nervous system.
    • Immediate assessment and intervention are critical to restore gas exchange and improve oxygenation.

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    Description

    A 63-year-old female patient is admitted with shortness of breath. Analyze the arterial blood gas results to determine the patient's condition. Identify the possible causes and diagnose the patient's condition.

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