In DKA, what is the typical arterial blood gas finding?

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Multiple Choice

In DKA, what is the typical arterial blood gas finding?

Explanation:
The main idea here is that diabetic ketoacidosis causes a metabolic acidosis from accumulating ketoacids. In arterial blood gas, you typically see acidemia with a low bicarbonate level, indicating metabolic acidosis, and a high anion gap from the ketoacids entering the circulation. The lungs respond by blowing off CO2, so the PaCO2 is reduced as a sign of respiratory compensation. This pattern—low pH, low bicarbonate, and elevated anion gap—fits with the acid buildup from ketoacids rather than any alkalosis or a normal ABG.

The main idea here is that diabetic ketoacidosis causes a metabolic acidosis from accumulating ketoacids. In arterial blood gas, you typically see acidemia with a low bicarbonate level, indicating metabolic acidosis, and a high anion gap from the ketoacids entering the circulation. The lungs respond by blowing off CO2, so the PaCO2 is reduced as a sign of respiratory compensation. This pattern—low pH, low bicarbonate, and elevated anion gap—fits with the acid buildup from ketoacids rather than any alkalosis or a normal ABG.

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