Audio Qbank – Q200 – A 10M with biochemical derangement post-viral illness

 

A 10-year-old boy has had polyuria, polydipsia, and weight loss the past two weeks since recovering from a viral illness. Which of the following sets of findings is most likely in this patient?

 

↑ β-hydroxybutyrate; ↑ Serum osmolality; ↑ Serum Na+; ↑ Anion gap
↑ β-hydroxybutyrate; ↑ Serum osmolality; ↑ Serum Na+; ↓ Anion gap
↑ β-hydroxybutyrate; ↑ Serum osmolality; ↓ Serum Na+; ↑ Anion gap
↑ β-hydroxybutyrate; ↑ Serum osmolality; ↓ Serum Na+; ↓ Anion gap
↑ β-hydroxybutyrate; ↓ Serum osmolality; ↑ Serum Na+; ↑ Anion gap
↑ β-hydroxybutyrate; ↓ Serum osmolality; ↑ Serum Na+; ↓ Anion gap
↑ β-hydroxybutyrate; ↓ Serum osmolality; ↓ Serum Na+; ↑ Anion gap
↑ β-hydroxybutyrate; ↓ Serum osmolality; ↓ Serum Na+; ↓ Anion gap
↓ β-hydroxybutyrate; ↑ Serum osmolality; ↑ Serum Na+; ↑ Anion gap
↓ β-hydroxybutyrate; ↑ Serum osmolality; ↑ Serum Na+; ↓ Anion gap
↓ β-hydroxybutyrate; ↑ Serum osmolality; ↓ Serum Na+; ↑ Anion gap
↓ β-hydroxybutyrate; ↑ Serum osmolality; ↓ Serum Na+; ↓ Anion gap
↓ β-hydroxybutyrate; ↓ Serum osmolality; ↑ Serum Na+; ↑ Anion gap
↓ β-hydroxybutyrate; ↓ Serum osmolality; ↑ Serum Na+; ↓ Anion gap
↓ β-hydroxybutyrate; ↓ Serum osmolality; ↓ Serum Na+; ↑ Anion gap
↓ β-hydroxybutyrate; ↓ Serum osmolality; ↓ Serum Na+; ↓ Anion gap

 

Cut-to-the-chase Answer (0:56):
HY USMLE Answer (5:55):