Proteolytic Enzyme Induction Within the Human Myocardial Interstitium

Status Completed

Clinical Trial Summary

A robust release of endothelin-1-1 (ET) with subsequent ETA subtype receptor (ET-AR) activation occurs in patients following cardiac surgery requiring cardiopulmonary bypass (CPB). Increased ET-AR activation has been identified in patients with poor left ventricular (LV) function (reduced ejection fraction; EF). Accordingly, this study tested the hypothesis that a selective ET-AR antagonist (ET-ARA) administered peri-operatively would favorably affect post-CPB hemodynamic profiles in patients with a pre-existing poor LVEF.

Clinical Trial Description

Patients with a reduced LVEF were prospectively randomized, in a blinded fashion, at the time of elective coronary revascularization and/or valve replacement requiring CPB, to infusion of the highly-selective and potent ET-ARA, sitaxsentan at 1 or 2 mg/kg (IV bolus) or vehicle (saline). Infusion of the ET-ARA/vehicle was performed immediately prior to separation from CPB and again at 12 hrs post-CPB. ET and hemodynamic measurements were performed at baseline, at separation from CPB (Time 0) and at 0.5, 6, 12, 24 hrs post-CPB. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00744211
Study type	Interventional
Source	VA Office of Research and Development
Contact
Status	Completed
Phase	N/A
Start date	July 2008
Completion date	April 2013

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