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Management of Dengue Infection

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How can ABG results guide oxygen therapy?

How can ABG results guide oxygen therapy?

ABG results are instrumental in tailoring oxygen therapy to meet the patient’s needs effectively without causing harm:

  • Determining Need for Oxygen: A low PaO2 (<60 mmHg) on ABG confirms hypoxemia, indicating the necessity of supplemental oxygen.
  • Avoiding Hyperoxia: ABG ensures that oxygen therapy does not cause hyperoxia (PaO2 >100 mmHg), which can lead to oxygen toxicity, especially in patients with chronic obstructive pulmonary disease (COPD).
  • Optimizing FiO2 Levels: In mechanically ventilated patients, ABG guides adjustments to the fraction of inspired oxygen (FiO2) to maintain target PaO2 levels without excessive oxygen administration.
  • Assessing Oxygenation Index: Parameters like PaO2/FiO2 ratio from ABG help evaluate the severity of hypoxemia and monitor the effectiveness of interventions.
  • Identifying Complications: ABG can reveal issues like carbon dioxide retention during oxygen therapy in patients with COPD, ensuring timely adjustments.

Regular ABG monitoring ensures oxygen therapy remains safe, effective, and aligned with the patient’s changing physiological status.


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