Case Study

The final patient is a 23-year-old woman who was admitted 6 hours ago for diabetic ketoacidosis. With appropriate therapy, her hyperglycemia has improved and her serum ketones are improving. Because she continues to feel poorly, repeat blood work is obtained. Studies show a pH of 7.15, PaCC>2 of 15 mm Hg (2 kPa), HCO3 of 5 mEq/L (mmol/L), sodium concentration of 140 mEq/L (mmol/L), and chloride concentration of 110 mEq/L (mmol/L).

What is the primary acid-base disorder?

Is there a mixed disorder?

Given the clinical history, what is the most likely explanation for the ABG findings? Table 28-3 Mnemonics for the Differential Diagnoses of Metabolic Acidosis

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