A 68-year-old with new-onset confusion and productive cough. CXR shows right lower lobe consolidation; sodium 122 mmol/L. Likely cause of hyponatraemi...

Question

A 68-year-old with new-onset confusion and productive cough. CXR shows right lower lobe consolidation; sodium 122 mmol/L. Likely cause of hyponatraemia?

Accepted Answer

SIADH secondary to pneumonia

Answer

Primary polydipsia

Answer

Diuretic-induced hyponatraemia

Answer

Adrenal insufficiency

Answer

Hypothyroidism

mrcp part 1 MCQ (SBA): SIADH due to pneumonia

A 68-year-old with new-onset confusion and productive cough. CXR shows right lower lobe consolidation; sodium 122 mmol/L. Likely cause of hyponatraemia?