NEET PG / USMLE – MCQ 49

An 18-year-old female athlete reports easy fatigability and weakness. Physical examination shows no abnormalities. Laboratory studies show:
Serum
Na+ 141 mEq/L
Cl− 85 mEq/L
K+ 2.1 mEq/L
HCO3− 35 mEq/L
Urine
Na+ 80 mEq/24 h
K+ 170 mEq/24 h
Which of the following is the most likely diagnosis?
(A) Aldosterone deficiency
(B) Anxiety reaction with hyperventilation
(C) Diabetic ketoacidosis
(D) Ingestion of anabolic steroids
(E) Surreptitious use of diuretics

Correct answer : (E) Surreptitious use of diuretics