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Randomized Comparison of Abciximab Plus Heparin With Bivalirudin in Acute Coronary Syndrome

2014-08-27 03:42:41 | BioPortfolio

Summary

The purpose of this study is to determine which of these anti-clotting medications, abciximab plus unfractionated heparin or bivalirudin, is more effective to prevent thrombotic and bleeding complications in patients suffering from a heart attack and undergoing coronary intervention.

Description

Non-ST elevation myocardial infarction (NSTEMI) is associated with an increased risk of death and is a major reason for hospital admissions. Most frequently, the sequence of events that leads to NSTEMI is characterized by a disrupted atherosclerotic plaque, platelet activation and aggregation, thrombus formation and microembolizations. Patients with NSTEMI are treated with an early invasive strategy and there is intensive work in progress to define the optimal antithrombotic therapy to be used in adjunct to percutaneous coronary intervention (PCI) in these patients. Bivalirudin, a direct thrombin inhibitor, and the glycoprotein IIb/IIIa inhibitor (GPI) abciximab have been in the focus of recent trials in patients with acute coronary syndrome (ACS). In a recent randomized, open-label trial (ACUITY trial), patients with the suspicion of ACS on the basis of the type of anginal symptoms, ST-segment displacement, elevated biomarkers or several risk indicators were randomized to receive bivalirudin alone with bail-out GPIs, bivalirudin plus GPIs, or heparin/low-molecular weight heparin plus a GPI. The GPIs most frequently used were eptifibatide and tirofiban. Abciximab was given in only < 9% of the cases. In another randomized, double-blind, placebo-controlled trial (ISAR-REACT-2) including ACS patients undergoing PCI, abciximab was administered in cath lab and was associated with a significant reduction of ischemic events in patients with NSTEMI, and did not lead to a measurable increase in major bleeding complications. However, it is not known whether abciximab is also superior to bivalirudin in patients with NSTEMI. We designed this study to assess whether abciximab added to unfractionated heparin is superior to bivalirudin in patients with NSTEMI.

Study Design

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

Conditions

Myocardial Infarction

Intervention

Abciximab + UFH, Bivalirudin, Heparin

Location

Herz-Zentrum Bad Krozingen
Bad Krozingen
Germany
79189

Status

Recruiting

Source

Deutsches Herzzentrum Muenchen

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:42:41-0400

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Medical and Biotech [MESH] Definitions

MYOCARDIAL INFARCTION in which the anterior wall of the heart is involved. Anterior wall myocardial infarction is often caused by occlusion of the left anterior descending coronary artery. It can be categorized as anteroseptal or anterolateral wall myocardial infarction.

A myocardial infarction that does not produce elevations in the ST segments of the ELECTROCARDIOGRAM. ST segment elevation of the ECG is often used in determining the treatment protocol (see also ST Elevation Myocardial Infarction).

A clinical syndrome defined by MYOCARDIAL ISCHEMIA symptoms; persistent elevation in the ST segments of the ELECTROCARDIOGRAM; and release of BIOMARKERS of myocardial NECROSIS (e.g., elevated TROPONIN levels). ST segment elevation in the ECG is often used in determining the treatment protocol (see also NON-ST ELEVATION MYOCARDIAL INFARCTION).

MYOCARDIAL INFARCTION in which the inferior wall of the heart is involved. It is often caused by occlusion of the right coronary artery.

Laceration or tearing of cardiac tissues appearing after MYOCARDIAL INFARCTION.

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