Plasma renin activity and aldosterone concentration are not altered by the novel calcium channel antagonist, azelnidipine, in hypertensive patients.

Objective: In hypertensive patients, primary aldosteronism (PA) is the most prevalent type of secondary hypertension, and screening for PA has become very important. Calcium channel blockers (CCB) are widely used to treat hypertension, but most CCBs stimulate plasma renin activity (PRA) and increase plasma aldosterone concentration (PAC), both of which are used in the screening for PA. The aim of this study was to determine whether the newly introduced CCB, azelnidipine, affects PRA and PAC.