Bumetanide Versus Furosemide in Heart Failure

Status Withdrawn

Clinical Trial Summary

Patients with NYHA FC II-III heart failure will be randomized in a cross-over fashion to 8 weeks of bumetanide versus furosemide therapy (equipotent dose), to test whether bumetanide therapy has a superior effect on insulin resistance compared to furosemide. Patients will be subject to a frequently sampled intravenous glucose tolerance test (FSIGT) with minimal model (MINMOD) analysis to assess insulin resistance and to a 6-minute walk test (6MWT) to assess functional capacity; patient recruitment and retention success, as well as medication adherence, will also be assessed.

Clinical Trial Description

Insulin resistance is common in patients with heart failure (HF) and is associated with a worse functional capacity and more severe symptoms of heart failure. The majority of HF patients take furosemide on at least a daily basis for symptom relief. Bumetanide is a loop diuretic with a similar therapeutic diuretic effect to furosemide. There is evidence from observational and small comparative trials that bumetanide has a significantly less deleterious effect on indirect measures of insulin resistance compared with furosemide. However, a formal comparison between the 2 drugs using rigorous measures of insulin resistance has never been conducted in patients with HF. If bumetanide can be demonstrated to have a similar diuretic and a superior (less deleterious) effect on insulin resistance in patients with HF, the potential exists for bumetanide to have a significantly reduced morbidity in patients with heart failure compared to furosemide. In order to prepare for such a study, the variance of the MINMOD-derived insulin resistance from the FSIGT (26), in this group of patient needs to be determined along with the feasibility of conducting such a study. Functional capacity will be determined by duplicate 6-minute walk tests. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Crossover Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00372762
Study type	Interventional
Source	Lawson Health Research Institute
Contact
Status	Withdrawn
Phase	Phase 3
Start date	January 2011
Completion date	June 2013

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.