Question

A 50-year-old with long-standing hypertension presents with hypokalaemia (K⁺ 3.0 mEq/L) and resistant BP on three agents including a thiazide. Next best test?

Accepted Answer

Plasma aldosterone concentration and renin (aldosterone-renin ratio) after correcting hypokalaemia

Answer

Plasma renin activity only

Answer

Adrenal venous sampling first

Answer

CT abdomen without labs

Answer

24-hour urinary catecholamines

Practice question

A 50-year-old with long-standing hypertension presents with hypokalaemia (K⁺ 3.0 mEq/L) and resistant BP on three agents including a thiazide. Next best test?