Objective: To asses the efficacy of hydrochlorothiazide on 24-h blood pressure (BP) control.Methods: Review of all the randomized trials that assessed.

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Presentation transcript:

Objective: To asses the efficacy of hydrochlorothiazide on 24-h blood pressure (BP) control.Methods: Review of all the randomized trials that assessed 24-h BP with hydrochlorothiazide (HCTZ) compared with other antihypertensive drugs. Meta-analysis of: -14 studies of HCTZ dose 12.5 to 25 mg, -5 studies of HCTZ dose 50 mg. No evidence to support the use of hydrochlorothiazide for 24-h blood pressure control 1. Messerli FH et al. J Am Coll Cardiol. 2011;57:

Efficacy of hydrochlorothiazide, assessed by 24-h ABPM 1 Efficacy of hydrochlorothiazide, assessed by 24-h ABPM 1 (Adapted from Messerli FH et al. J Am Coll Cardiol. 2011;57: ) Compared with hydrochlorothiazide (HCTZ) dose 12.5 to 25 mg, P< for other antihypertensive drugs, as assessed by 24-h ambulatory blood pressure (ABP) monitoring. Bars = 95% confidence intervals N = number of studies ACE = angiotensin-converting enzyme ARBs = angiotensin-receptor blockers 1. Messerli FH et al. J Am Coll Cardiol. 2011;57: HCTZ: inferior 24-h BP control N=14 N=5 N=3 N=5 N= BP Reduction (mm Hg) ACE inhibitors ARBsBeta Blockers Calcium Antagonists HCTZ Systolic BP Diastolic BP

“Not all diuretics are equal” HCTZ mg/day does not reduce stroke and heart attack, or death. 2,3 The diuretics shown to reduce cardiovascular morbidity and mortality are chlorthalidone in SHEP and ALLHAT, and indapamide in HYVET, PROGRESS, and ADVANCE 2. Gaciong Z, Symonides B. Expert Opin. Pharmacother. 2010;11: Kaplan NM. Hypertension. 2009;54: Beckett NS, Peters R, Fletcher AE, et al. N Engl J Med. 2008;358: PROGRESS Collaborative Group. Lancet. 2001;358:1033– ADVANCE Collaborative Group. Lancet. 2007;370: Total mortality Fatal or nonfatal stroke Heart failure Fatal stroke -39% -30% -64% -21% Cardiovascular mortality Renal events Total mortality -14% -18% -21% Stroke -43%

The efficacy on 24-h blood pressure control of HCTZ at its usual daily doses, of 12.5 to 25 mg/day is inferior to that of all other antihypertensive drug classes. 1 There are no data showing that HCTZ mg/day reduces heart attack and stroke or death. 2 The authors of the meta-analysis concluded that: CONCLUSIONS 1. Messerli FH et al. J Am Coll Cardiol. 2011;57: Gaciong Z, Symonides B. Expert Opin. Pharmacother. 2010;11: “if a clinical indication calls for a thiazide-type diuretic, chlorthalidone or indapamide remain the drugs of choice”. “if a clinical indication calls for a thiazide-type diuretic, chlorthalidone or indapamide remain the drugs of choice”. 1