Test Findings
 

Acidaemia

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Overview

  • A pH <7.35 is indicative of acidaemia; this may be due to a primary metabolic or respiratory acidosis.
    • Causes of Acidaemia

    • Metabolic acidosis - acid ingestion, lactic acidosis, ketoacidosis, renal failure, renal tubular acidosis, diarrhoea
    • Respiratory acidosis - hypoventilation or dead space ventilation
    • Interpretation

    • Reduced HCO₃ ± reduced PaCO₂ - suggests metabolic acidosis
    • Elevated PaCO₂ ± elevated HCO₃  - suggests respiratory acidosis
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