Acid–Base Disorders — Advanced

A patient has Na 140, Cl 100, HCO3 12 mEq/L, and albumin 4.0 g/dL. Which interpretation is most accurate?

A patient with diabetic ketoacidosis has Na 140, Cl 90, and HCO3 10 mEq/L. What does the delta ratio most strongly suggest?

For a patient with metabolic acidosis and HCO3 of 10 mEq/L, Winter’s expected PCO2 is approximately 23 ± 2 mmHg. The measured PCO2 is 38 mmHg. What is the best interpretation?

A patient has severe metabolic alkalosis, urine chloride 8 mEq/L, and a history of repeated vomiting. Which mechanism and treatment are most appropriate?

A malnourished patient with short-bowel syndrome develops episodic confusion and high-anion-gap metabolic acidosis after carbohydrate intake. Which metabolite is most likely responsible?

A patient using large amounts of toluene-containing solvent develops hypokalemic hyperchloremic metabolic acidosis with a positive urine anion gap and hippuric acid in urine. Which renal lesion is most likely?

A patient with suspected proximal renal tubular acidosis has a plasma bicarbonate of 14 mEq/L and urine pH 5.0. Which statement is most accurate?

A patient presents after salicylate overdose with pH 7.45, PCO2 20 mmHg, and HCO3 14 mEq/L. Which acid–base disorder is most likely?

A patient receiving massive transfusion develops worsening metabolic acidosis, rising total calcium, and impaired citrate metabolism in severe liver failure. Which mechanism best explains the acid–base disturbance?

A patient with persistent hyperchloremic metabolic acidosis has urine pH 6.5, positive urine anion gap, and no diarrhea. Which diagnosis is most likely?