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ABG Interpretation

Respiratory Alkalosis

February 15th, 2021


  • Primary Abnormality

  • Alkalaemia with decreased PaCO₂.
  • Secondary Response

  • Acute respiratory alkalosis - 2mmol/L [HCO₃] decrease for every 10mmHg PaCO₂ below 40mmHg
  • Chronic respiratory acidosis - 4mmol/L [HCO₃] decrease for every 10mmHg PaCO₂ below 40mmHg
  • Causes of Respiratory Alkalosis

  • Hyperventilation - hypoxia, anxiety, pain, intracranial pathology, pregnancy
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Snapshot: Initialising...