A patient presents with hyperchloremic metabolic acidosis. Which of the following is the most likely cause?

A Diarrhea
B Renal tubular acidosis ✓
C Lactic acidosis
D Ethylene glycol poisoning

Explanation

Hyperchloremic metabolic acidosis is often caused by renal tubular acidosis, which is characterized by a defect in the kidney's ability to reabsorb bicarbonate or secrete hydrogen ions.

Source

Harrison's Principles of Internal Medicine
Electrolytes and Acid-Base Balance Acid-Base Disorders Metabolic Acidosis Hard MEDICAL Confidence: medium