Abstract 11907: Choice of Antihypertensive Combination Therapy Based on Daily Salt Intake

Introduction: To achieve strict blood pressure control, combination therapy with multiple antihypertensive agents, including angiotensin receptor blockers (ARBs) are recommended. Recently, various ARB combination pills have been developed, including ARBs combined with thiazide diuretics (TZs) and calcium channel blockers (CCBs). However, it has yet to be determined which drug class, the TZs or the CCBs, is more efficacious as add-on therapy to ARBs in controlling hypertension. Hypothesis: This study was designed to test our hypothesis that the combination treatment with ARB/TZ would be better in hypertensive patients with high salt diet intake to lower blood pressure, compared to that with ARB/CCB. Methods: Hypertensive patients who failed to reach blood pressure goals despite treatment with ARBs alone were randomly assigned to receive either ARB/TZ or ARB/CCB combination therapy. Estimated daily sodium intake was calculated from spot urine values of sodium and creatinine. Blood pressure was measured at b...