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Evaluation and Comparison of Several Point-of-care Platelet Function Tests in Predicting Clinical Outcomes in Clopidogrel Pre-treated Patients Undergoing Elective PCI.

Stable Angina Pectoris Clinical Trial

Official title:
Do Point-of-care Platelet Function Assays Predict Clinical Outcomes in Clopidogrel Pre-treated Patients Undergoing Elective PCI. (The POPular Study)

Clinical Trial Summary

The purpose of this study is to investigate whether the level of Platelet Inhibition as assessed with five point-of-care platelet function assays correlates with clinical (periprocedural) outcomes such as Acute Myocardial Infarction, death, Target Vessel revascularization and/or stroke in patients undergoing elective PCI.

Clinical Trial Description

Antiplatelet agents—aspirin, thienopyridines, and platelet glycoprotein IIb/IIIa (GpIIb/IIIa) inhibitors—have become cornerstones in the treatment of ischemic heart disease for patients undergoing percutaneous coronary intervention (PCI)1,2. However, several studies have demonstrated with the use of platelet function assays that subgroups of patients receiving either aspirin, clopidogrel, or both fail to produce the anticipated antiplatelet effect3-5. Consequently, terms like "aspirin-resistance" and "clopidogrel resistance" have been introduced in literature.

Light transmittance platelet aggregometry is generally considered to be the gold standard for determining platelet function, but its relevance to in vivo platelet function is questionable and the logistically demands of the method make it impossible to use in daily practice. In addition, aggregation is just one of several important platelet functions. The introduction of several point-of-care assays may be the key to the widespread clinical use of platelet function testing to identify so called anti-platelet therapy low-responders. However, whether these point-of-care platelet function tests provide predictive value (i.e. correlate with clinical outcomes) and the allocation of the "best" or most suitable point-of-care Platelet function assay to determine the level of inhibition of platelet function remains to be established. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00352014
Study type Observational
Source R&D Cardiologie
Contact
Status Completed
Phase
Start date January 2006
Completion date May 2008
View Details
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