All are features of A-type 1 Except: (A) Renal stones, (B) Fanconi syndrome, (C) No anion gap, (D) Decreased potassium
Answer is B. The typical findings in acquired or inherited forms of classic distal A (type 1 A) include hypokalemia, non-AG metabolic acidosis, low urinary NH4+ excretion (positive UAG, low urine ), and inappropriately high urine pH (pH > 5.5). Most patients have hypocitraturia and hypercalciuria, so nephrolithiasis, nephrocalcinosis, and bone disease are commonReference: Harrison&;s Principles of Internal Medicine; 19th edition; Chapter 66; Acidosis and Alkalosis