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  • Title: Combining renin-angiotensin-aldosterone system blockade with diuretic therapy for treatment of hypertension.
    Author: Motwani JG.
    Journal: J Renin Angiotensin Aldosterone Syst; 2002 Jun; 3(2):72-8. PubMed ID: 12228846.
    Abstract:
    The rationale for using angiotensin-converting enzyme inhibitors (ACE-I) or angiotensin receptor blockers (ARBs) in combination with thiazide diuretic therapy has centred formerly around antihypertensive synergy and counter-balancing adverse metabolic effects, particularly on potassium homeostasis. However, two recent landmark clinical trials that included high-risk hypertensive patients have now provided an evidence base for this form of combination therapy by demonstrating the efficacy of perindopril/indapamide and losartan/ hydrochlorothiazide in reducing vascular morbidity and mortality, a proportion of the benefit being unaccounted for by blood pressure reduction alone. Several unresolved issues remain concerning class effects versus specific drug effects, optimal dosing, potential differences in efficacy between ACE-I and ARBs, whether elderly mild hypertensives benefit from this form of combination therapy, and the possibility that the optimal regimen may be a triple combination of ACE-I, ARB and thiazide diuretic. These issues will be resolved by ongoing and future major endpoint trials in hypertension.
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