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The purpose of DIME is to evaluate the safety (i.e. new onset of diabetes and other metabolic adverse events), efficacy and cost-effectiveness of antihypertensive treatment with low dose diuretics. The researchers' hypothesis is that use of low dose thiazide diuretics is metabolically safe when used with other appropriate antihypertensives, effective in reduction of blood pressure and cheaper than treatment without diuretics. Therefore, this study is an equivalence trial.
There has been substantial evidence from clinical trials to support the rationale of use of thiazide diuretics in patients with essential hypertension. Diuretics may be more effective in reduction of blood pressure in Japanese patients than Caucasian because of higher salt intake. Moreover, given a large number of hypertensive population here, diuretics may be the most cost-effective antihypertensive agent. Japanese physicians, however, tend to avoid diuretics even in elderly hypertensive patients because of much concern over metabolic adverse events including new onset diabetes, which is deemed to increase cardiovascular risk. Although it is unlikely that use of low dose (12.5 mg of HCTZ or less) diuretics is associated with metabolic adverse events when they are given with any other appropriate antihypertensive agents (e.g. Ca antagonist, ACE inhibitor, ARB, K sparing diuretics) other than β-blockers, the researchers have to confirm the safety of low dose diuretics in terms of new onset diabetes in Japanese, who are assumed to be "diabetes prone" based upon thrifty gene hypothesis.
Allocation: Randomized, Control: Active Control, Endpoint Classification: Safety Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Prevention
Thiazide diuretics, No diuretics
University of the Ryukyus
Published on BioPortfolio: 2014-08-27T03:52:27-0400
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Drugs used in the treatment of acute or chronic vascular HYPERTENSION regardless of pharmacological mechanism. Among the antihypertensive agents are DIURETICS; (especially DIURETICS, THIAZIDE); ADRENERGIC BETA-ANTAGONISTS; ADRENERGIC ALPHA-ANTAGONISTS; ANGIOTENSIN-CONVERTING ENZYME INHIBITORS; CALCIUM CHANNEL BLOCKERS; GANGLIONIC BLOCKERS; and VASODILATOR AGENTS.
A subclass of diuretics that limits the secretion of POTASSIUM into the URINE.
Na-Cl cotransporter in the convoluted segments of the DISTAL KIDNEY TUBULE. It mediates active reabsorption of sodium and chloride and is inhibited by THIAZIDE DIURETICS.
Compounds that increase urine volume by increasing the amount of osmotically active solute in the urine. Osmotic diuretics also increase the osmolarity of plasma.
Agents that promote the excretion of urine through their effects on kidney function.
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