A normal-anion-gap metabolic acidosis occurs in patients with-: (A) Diarrhoea, (B) Diabetic ketoacidosis, (C) Methyl alcohol poisoning, (D) Acute renal failure
Answer is A. Alkali can be lost from the gastrointestinal tract from diarrhea or from the kidneys (renal tubular acidosis, A). In these disorders, reciprocal changes in and result in a normal anion gap (AG). * In pure non-AG acidosis, therefore, the increase in above the normal value approximates the decrease in . 