Characteristics of primary hyperaldosteronism – Physiology MCQ

Primary hyperaldosteronism is characterised by?
A. Peripheral oedema
B. Rise in plasma potassium
C. Metabolic acidosis
D. Decrease in sodium content of sweat

Correct answer : D. Decrease in sodium content of sweat

• Primary hyperaldosteronism is characterised by absence of peripheral oedema, metabolic alkalosis and marked fall in plasma potassium levels.
• There is rise in plasma sodium, but decrease in sodium content of sweat, saliva and GI secretions.

Ref: Textbook of Physiology, A K Jain, 3rd edition, Volume 2, page 743.