Effects of Potassium Salts on Blood Pressure and Target Organ Damage
Recruitment status was: Recruiting
|Study Design:||Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Crossover Assignment
Primary Purpose: Treatment
|Official Title:||Effect of Potassium Bicarbonate and Potassium Chloride on Blood Pressure and Markers of Target Organ Damage in Hypertensives|
- Blood pressure and markers of target organ damage and bone health at 4 weeks of potassium supplementation.
- Comparisons among different treatments in blood pressure and markers of target organ damage and bone health.
|Study Start Date:||January 2005|
|Estimated Study Completion Date:||March 2008|
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.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00160368
|St. George's University of London,|
|London, United Kingdom, SW17 0RE|
|Principal Investigator:||Graham A MacGregor, MD||St George's, University of London|