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Renal Optimization Strategies Evaluation in Acute Heart Failure

2014-08-27 03:13:21 | BioPortfolio

Summary

The purpose of this study is to determine the benefits and safety of intravenous administration of low dose nesiritide or low dose dopamine in patients with congestive heart failure and kidney dysfunction.

Description

Acute heart failure (AHF) is the most common cause of hospital admission in patients over age 65, accounting for 1,000,000 admissions, over 6 million hospital days, and $12 billion in costs annually. The prognosis of patients admitted with AHF is dismal, with a 20-30% readmission rate and a 20-30% mortality rate within six months after admission. Recent studies have established the prognostic importance of renal function in patients with heart failure. In patients who are hospitalized with decompensated congestive heart failure, worsening renal function is also associated with worse outcome, Various studies have estimated that 25-30% of patients hospitalized for decompensated CHF have worsening of renal function leading to prolonged hospitalization, increased morbidity and mortality. Although there are no FDA approved renal adjuvant therapies for AHF, several novel adjuvant therapies for use in AHF are being investigated in randomized clinical trials. Additionally, there are currently available strategies, with the potential for improving renal function in AHF such as low dose dopamine and low dose nesiritide. However, these strategies have not been investigated.

Participation in this study will last 6 months. All potential participants will undergo initial screening, which wil include a medical history, physical exam, blood draws, measurements of fluid intake and output, and questionnaires. The same evaluations and procedures will be repeated at various points during the study. Eligible participants will be randomly assigned to receive low dose nesiritide or placebo with optimal diuretic dosing or low dose dopamine or placebo with optimal diuretic dosing.

Follow-up assessments will occur at Baseline, 24 hours, 48 hours, 72 hours, day 7 or discharge, day 60 and 6 months. Follow-up assessments will include medical history, physical exam, blood draws, measurements of fluid intake and output, questionnaires and questions about medications and changes in health.

Study Design

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

Conditions

Acute Heart Failure

Intervention

Placebo plus optimal diuretic dosing, Nesiritide, Dopamine

Location

Morehouse School of Medicine
Atlanta
Georgia
United States
30310

Status

Not yet recruiting

Source

National Heart, Lung, and Blood Institute (NHLBI)

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:13:21-0400

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Medical and Biotech [MESH] Definitions

Drugs that bind to but do not activate DOPAMINE RECEPTORS, thereby blocking the actions of dopamine or exogenous agonists. Many drugs used in the treatment of psychotic disorders (ANTIPSYCHOTIC AGENTS) are dopamine antagonists, although their therapeutic effects may be due to long-term adjustments of the brain rather than to the acute effects of blocking dopamine receptors. Dopamine antagonists have been used for several other clinical purposes including as ANTIEMETICS, in the treatment of Tourette syndrome, and for hiccup. Dopamine receptor blockade is associated with NEUROLEPTIC MALIGNANT SYNDROME.

The naturally occurring form of DIHYDROXYPHENYLALANINE and the immediate precursor of DOPAMINE. Unlike dopamine itself, it can be taken orally and crosses the blood-brain barrier. It is rapidly taken up by dopaminergic neurons and converted to DOPAMINE. It is used for the treatment of PARKINSONIAN DISORDERS and is usually given with agents that inhibit its conversion to dopamine outside of the central nervous system.

Any drugs that are used for their effects on dopamine receptors, on the life cycle of dopamine, or on the survival of dopaminergic neurons.

A subtype of dopamine D1 receptors that has higher affinity for DOPAMINE and differentially couples to GTP-BINDING PROTEINS.

One of the catecholamine NEUROTRANSMITTERS in the brain. It is derived from TYROSINE and is the precursor to NOREPINEPHRINE and EPINEPHRINE. Dopamine is a major transmitter in the extrapyramidal system of the brain, and important in regulating movement. A family of receptors (RECEPTORS, DOPAMINE) mediate its action.

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