Clinical Trial: Phase II Study of the Pathophysiology and Treatment With Enalapril and Polystyrene Sulfonate for Pseudohypoaldosteronism, Type I

Study Status: Completed
Recruit Status: Completed
Study Type: Interventional

Official Title:

Brief Summary:

OBJECTIVES: I. Establish the sodium and potassium intake that will maintain a normovolemic state in a patient with pseudohypoaldosteronism.

II. Determine the effect of extracellular fluid volume and serum potassium manipulations on exercise tolerance, cardiac function, and endurance.

III. Investigate pharmacologic methods of limiting excretion of sodium in urine and sweat.

Detailed Summary:

PROTOCOL OUTLINE: Sodium and potassium intake resulting in normalization of serum electrolytes and markers of extracellular volume are determined at baseline. A trial diet is then prescribed, with adjustments made to achieve a steady state with normal serum electrolytes. Exercise tolerance and muscle function are evaluated at steady state.

Sodium and potassium are sequentially manipulated with diet, enalapril, and polystyrene sulfonate. Exercise tolerance is evaluated during each diet period.

A treatment plan to maintain electrolyte balance is developed. The patient is followed monthly for 3 to 6 months, then every 3 months for up to 3 years.

Sponsor: National Center for Research Resources (NCRR)

Current Primary Outcome:

Original Primary Outcome:

Current Secondary Outcome:

Original Secondary Outcome:

Information By: Office of Rare Diseases (ORD)

Dates:
Date Received: October 18, 1999
Date Started: December 1992
Date Completion:
Last Updated: June 23, 2005
Last Verified: May 2000