A 49-year-old bodybuilder undergoes a physical prior to a competition. Serum biochemistry is as follows: Na+ 131 mEq/L; K+ 4.6 mEq/L; plasma osmolality 255 mOsmol/kg; urine osmolality 200 mOsmol/kg. What’s the diagnosis?
Diabetes insipidus
Diabetes mellitus type I
Diabetes mellitus type II
Polydipsia
Surreptitious use of diuretics
—
Cut-to-the-chase Answer (0:57):
—
HY USMLE Answer (4:03):
