Direct comparison of doses did not show evidence of dose dependence for blood pressure-lowering for any of the other thiazides for which RCT data were available : bendrofluazide , chlorthalidone , cyclopenthiazide , metolazone or indapamide .
This is based on an informal indirect comparison of results observed in other Cochrane review s on ACE inhibitors , ARBs and renin inhibitors compared with placebo , which used similar inclusion /exclusion criteria to the present review .Thiazides reduced potassium , increased uric acid and increased total cholesterol and triglycerides .
These effects were dose-related and were least for hydrochlorothiazide .
Chlorthalidone increased serum glucose but the evidence was unclear for other thiazides .
This systematic review shows that hydrochlorothiazide has a dose-related blood pressure-lowering effect .
Thiazides reduced potassium , increased uric acid and increased total cholesterol and triglycerides
BACKGROUND Hypertension is a modifiable cardiovascular risk factor .
Although it is established that low-dose thiazides reduce mortality as well as cardiovascular morbidity , the dose-related effect of thiazides in decreasing blood pressure has not been subject to a rigorous systematic review .
It is not known whether individual drugs within the thiazide diuretic class differ in their blood pressure-lowering effects and adverse effects .
OBJECTIVES To determine the dose-related decrease in systolic and /or diastolic blood pressure due to thiazide diuretics compared with placebo control in the treatment of patients with primary hypertension .
Secondary outcomes included the dose-related adverse events leading to patient withdrawal and adverse biochemical effects on serum potassium , uric acid , creatinine , glucose and lipids .
Long-Term Antihypertensive Efficacy and Safety of the Oral Direct Renin Inhibitor Aliskiren: A 12-Month Randomized, Double-Blind Comparator Trial With Hydrochlorothiazide
Background — Diuretics are recommended as first-line agents for the treatment of hypertension . This r and omized , double-blind , multicenter study assessed the long-term efficacy and safety of the direct renin inhibitor aliskiren in comparison with the diuretic hydrochlorothiazide in patients with essential hypertension . Methods and Results — After a 2- to 4-week placebo run-in , 1124 patients ( mean sitting diastolic blood pressure [ BP ] 95 to 109 mm Hg ) were r and omized to aliskiren 150 mg ( n=459 ) , hydrochlorothiazide 12.5 mg ( n=444 ) , or placebo ( n=221 ) once daily . Forced titration ( to aliskiren 300 mg or hydrochlorothiazide 25 mg ) occurred at week 3 ; at week 6 , patients receiving placebo were reassigned ( 1:1 ratio ) to aliskiren 300 mg or hydrochlorothiazide 25 mg . From week 12 , amlodipine 5 mg was added and titrated to 10 mg from week 18 for patients whose BP remained uncontrolled . Efficacy variables were analyzed for the intent-to-treat population with the use of the last observation carried forward method . BP reductions ( mean sitting systolic BP/mean sitting diastolic BP ) were significantly greater with aliskiren- versus hydrochlorothiazide-based treatment at week 26 ( −20.3/−14.2 versus −18.6/−13.0 mm Hg ; P<0.05 ) and were also greater at week 52 ( −22.1/−16.0 versus −21.2/−15.0 mm Hg ; P<0.05 for mean sitting diastolic BP ) . At the end of the monotherapy period ( week 12 ) , aliskiren 300 mg was superior to hydrochlorothiazide 25 mg in reducing BP ( −17.4/−12.2 versus −14.7/−10.3 mm H ; P<0.001 ) . Adverse event rates were similar with aliskiren- ( 65.2 % ) and hydrochlorothiazide-based therapy ( 61.5 % ) . Hypokalemia was more frequent with hydrochlorothiazide-based therapy than aliskiren-based therapy ( 17.9 % versus 0.9 % ; P<0.0001 ) . Conclusions — Aliskiren treatment , both as monotherapy and with optional addition of amlodipine , provided significantly greater BP reductions than the respective hydrochlorothiazide regimens . Aliskiren-based therapy was well tolerated . Direct renin inhibition with aliskiren therefore represents an effective option for the long-term treatment of essential hypertension
Direct comparison of doses did not show evidence of dose dependence for blood pressure-lowering for any of the other thiazides for which RCT data were available : bendrofluazide , chlorthalidone , cyclopenthiazide , metolazone or indapamide .
This is based on an informal indirect comparison of results observed in other Cochrane review s on ACE inhibitors , ARBs and renin inhibitors compared with placebo , which used similar inclusion /exclusion criteria to the present review .Thiazides reduced potassium , increased uric acid and increased total cholesterol and triglycerides .
These effects were dose-related and were least for hydrochlorothiazide .
Chlorthalidone increased serum glucose but the evidence was unclear for other thiazides .
This systematic review shows that hydrochlorothiazide has a dose-related blood pressure-lowering effect .
Thiazides reduced potassium , increased uric acid and increased total cholesterol and triglycerides
BACKGROUND Hypertension is a modifiable cardiovascular risk factor .
Although it is established that low-dose thiazides reduce mortality as well as cardiovascular morbidity , the dose-related effect of thiazides in decreasing blood pressure has not been subject to a rigorous systematic review .
It is not known whether individual drugs within the thiazide diuretic class differ in their blood pressure-lowering effects and adverse effects .
OBJECTIVES To determine the dose-related decrease in systolic and /or diastolic blood pressure due to thiazide diuretics compared with placebo control in the treatment of patients with primary hypertension .
Secondary outcomes included the dose-related adverse events leading to patient withdrawal and adverse biochemical effects on serum potassium , uric acid , creatinine , glucose and lipids .