Question

Hyponatremia occurs when there is loss of sodium through

• A. Excessive perspiration
• B. Vomitting
• C. Diarrhoea
• D. All of the above

Answer 1

The correct option is D All of the above

In hypovolaemic hyponatraemia the extracellular fluid volume is reduced. Causes include excessive gastrointestinal losses and salt-losing nephropathies. Cerebral salt wasting is an occasional cause of hyponatraemia in neurosurgical patients or patients with subarachnoid haemorrhage.

So, the correct answer is 'All of the above'