Diagnosing Fasting Metabolic Ketoacidosis: Role of Arterial Blood Gas Analysis

Arterial blood gas (ABG) analysis is the diagnostic standard for fasting metabolic ketoacidosis. ABG measures pH, PaCO₂, PaO₂, and bicarbonate (HCO₃⁻). In fasting ketoacidosis, findings include decreased pH, decreased PaCO₂ (respiratory compensation), decreased HCO₃⁻, and elevated PaO₂.

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