Hypertension Clinical Trial
Official title:
Effect of Potassium Bicarbonate and Potassium Chloride on Blood Pressure and Markers of Target Organ Damage in Hypertensives
The purpose of this study is to determine the effect of potassium chloride and potassium bicarbonate on blood pressure and also to determine whether increasing potassium intake has beneficial effects on the surrogate markers of target organ damage in cardiovascular disease, as well as on bone health.
Randomised trials have shown that increasing potassium intake lowers blood pressure.
However, most previous trials used potassium chloride. Whereas, potassium in fruits and
vegetables is not a chloride salt, but a mixture of potassium phosphate, sulphate, citrate,
and many organic anions, most of which are precursors of potassium bicarbonate. It is
unclear whether non-chloride salt of potassium has greater or lesser effect on blood
pressure compared to potassium chloride.
Experimental studies in animals and epidemiological studies in humans suggest that a high
potassium intake may have beneficial effects on the cardiovascular system and the kidney,
independent of its effect on blood pressure, and also reduce the risk of osteoporosis.
We propose to carry out a randomised double-blind trial to compare potassium bicarbonate
with potassium chloride looking at their effect on blood pressure, and also to determine
whether these potassium salts have beneficial effects on the cardiovascular system, kidney
and bone health.
Comparisons: potassium chloride vs potassium bicarbonate vs placebo.
;
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Crossover Assignment, Masking: Double-Blind, Primary Purpose: Treatment
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