Hypertension Clinical Trial
Official title:
Does Aldosterone Cause Hypertension by a Non-Renal Mechanism?
It is well known that Aldosterone (aldo) can cause hypertension (HBP). Since aldo is known to cause the kidney to retain sodium (Na) and Na retention is known to cause HBP, it has been thought that the mechanism by which aldo causes HBP is by Na retention. Recent studies have suggested that aldo has many effects in addition to its ability to cause the kidney to retain Na. To test the hypothesis that aldo can cause HBP in a manner which does not involve Na retention, we plan, in this protocol, to give Eplerenone, a specific aldo antagonist, to patients on dialysis who have HBP. A positive effect of Eplerenone to lower HBP in these patients would support this hypothesis.
Status | Not yet recruiting |
Enrollment | 27 |
Est. completion date | November 2009 |
Est. primary completion date | |
Accepts healthy volunteers | No |
Gender | Both |
Age group | 16 Years to 80 Years |
Eligibility |
Inclusion Criteria: - We will select study participants from adult hemodialysis patients treated thrice weekly at Shaare Zedek Medical Center Dialysis Unit. - Men and women will qualify for the study if they were on hemodialysis therapy for more than 3 months, have an average predialysis plasma potassium concentration less than 5.6 mEq/L at the time of enrollment and have nil or minimal urine output (<500 mL/24 h). - All participating women of childbearing age will have a negative pregnancy test result before entering into the study. Exclusion Criteria: Exclusion criteria will include: - A known allergy to Spironolactone or Eplerenone - Any acute illness; hypotension, defined as a predialysis systolic blood pressure less than 100 mm Hg - Severe hypertension (predialysis systolic blood pressure >180 mm Hg and/or diastolic blood pressure >100 mm Hg) - Decompensated heart failure - Inability to give informed consent; and - Noncompliance. |
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Crossover Assignment, Masking: Double Blind (Subject, Caregiver, Investigator), Primary Purpose: Diagnostic
Country | Name | City | State |
---|---|---|---|
Israel | Shaare Zedek Medical Center | Jerusalem |
Lead Sponsor | Collaborator |
---|---|
Shaare Zedek Medical Center |
Israel,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Significant drop in blood pressure with Eplerenone when compared to placebo. | days |
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