Question

A 72-year-old man with small cell lung cancer is found to have serum Na 125 mmol/L and inappropriately high urine osmolality. He is euvolaemic. Which management is recommended first-line for SIADH?

Accepted Answer

Fluid restriction

Answer

IV hypertonic saline

Answer

Tolvaptan (vasopressin receptor antagonist)

Answer

Furosemide

Answer

Oral salt tablets

Practice question

A 72-year-old man with small cell lung cancer is found to have serum Na 125 mmol/L and inappropriately high urine osmolality. He is euvolaemic. Which management is recommended first-line for SIADH?