Today’s case presented by Dr. Neharika Khurana was an elderly male with a history of tobacco use who presented with subacute/chronic cough, unintentional weight loss, night sweats, and hyponatremia.

Our general approach to hyponatremia:

*Diuretics create a high urine sodium regardless of volume status unless severe dehydration is present

*If renal disease or intracranial pathology (cerebral salt wasting syndrome) is present, urine sodium may be high when the volume status is actually low