Arab Board Clinical Pathology Part 1 Practice Questions - Arab Board Clinical Pathology Part 1 Written Examination (ABHS) Exam

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A 24-year-old woman with type 1 diabetes presents with severe nausea, persistent vomiting, and abdominal pain. Laboratory results are: Na+ 136 mmol/L, K+ 4.8 mmol/L, Cl- 88 mmol/L, HCO3- 16 mmol/L, and arterial blood pH 7.32. Her calculated anion gap is 32 mmol/L. What does calculation of the delta ratio (delta AG / delta HCO3-) indicate regarding her acid-base status?

Pure high anion gap metabolic acidosis without any secondary metabolic disorder Mixed high anion gap metabolic acidosis and normal anion gap metabolic acidosis Mixed high anion gap metabolic acidosis and concurrent metabolic alkalosis Pure respiratory acidosis with appropriate renal compensation

Correct Answer:

Mixed high anion gap metabolic acidosis and concurrent metabolic alkalosis

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