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ABG Interpretation
 
 

Respiratory Alkalosis

 
 
 
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Overview

    • 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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