INTRODUCTION: An increasing amount of evidence indicates that platelet reactivity, despite a standard anti-thrombotic therapy, is a potential risk factor for recurrent myocardial ischemia in patients with coronary artery disease. We now hypothesize that this condition, measured by collagen-epinephrine (CEPI) or collagen-ADP (CADP) closure times (CT) by Platelet Function Analyzer (PFA-100), may predict the recurrence of coronary events after percutaneous coronary intervention (PCI). MATERIALS AND METHODS: CEPI and CADP-CT were measured 30+/-8 h after PCI in 175 consecutive patients admitted with a diagnosis of stable angina (n=94) or acute coronary syndromes (n=81) and prospectively followed up for a mean period of 6 months. We stratified the patients in accordance to both the CEPI-CT (<or> 190 s), reflecting the intensity of cycloxygenase inhibition by aspirin and the distribution into quartiles for CADP-CT. RESULTS: CEPI-CT<190 s as well as CADP-CT<82 s were associated with a higher rate of clinical recurrence (hazard ratio 8.5, p<0.001 and 22.9, p<0.001, respectively). Multivariate analysis after adjustment for other risk factors confirmed that the lowest CADP-CT quartile significantly correlates with the risk of recurrent coronary events (hazard ratio 36.5, p<0.01), as well as CEPI-CT<190 s (hazard ratio 6.7, p=0.01). CONCLUSIONS: An enhanced platelet function after PCI when measured under high shear rates by PFA-100 is an independent predictor of a worst clinical outcome, even during a short term follow-up and may help in patients risk stratification.
INTRODUCTION: An increasing amount of evidence indicates that platelet reactivity, despite a standard anti-thrombotic therapy, is a potential risk factor for recurrent myocardial ischemia in patients with coronary artery disease. We now hypothesize that this condition, measured by collagen-epinephrine (CEPI) or collagen-ADP (CADP) closure times (CT) by Platelet Function Analyzer (PFA-100), may predict the recurrence of coronary events after percutaneous coronary intervention (PCI). MATERIALS AND METHODS:CEPI and CADP-CT were measured 30+/-8 h after PCI in 175 consecutive patients admitted with a diagnosis of stable angina (n=94) or acute coronary syndromes (n=81) and prospectively followed up for a mean period of 6 months. We stratified the patients in accordance to both the CEPI-CT (<or> 190 s), reflecting the intensity of cycloxygenase inhibition by aspirin and the distribution into quartiles for CADP-CT. RESULTS:CEPI-CT<190 s as well as CADP-CT<82 s were associated with a higher rate of clinical recurrence (hazard ratio 8.5, p<0.001 and 22.9, p<0.001, respectively). Multivariate analysis after adjustment for other risk factors confirmed that the lowest CADP-CT quartile significantly correlates with the risk of recurrent coronary events (hazard ratio 36.5, p<0.01), as well as CEPI-CT<190 s (hazard ratio 6.7, p=0.01). CONCLUSIONS: An enhanced platelet function after PCI when measured under high shear rates by PFA-100 is an independent predictor of a worst clinical outcome, even during a short term follow-up and may help in patients risk stratification.
Authors: Leonard C Edelstein; Elizabeth J Luna; Ian B Gibson; Molly Bray; Ying Jin; Altaf Kondkar; Srikanth Nagalla; Nacima Hadjout-Rabi; Tara C Smith; Daniel Covarrubias; Stephen N Jones; Firdos Ahmad; Moritz Stolla; Xianguo Kong; Zhiyou Fang; Wolfgang Bergmeier; Chad Shaw; Suzanne M Leal; Paul F Bray Journal: Circulation Date: 2012-05-01 Impact factor: 29.690
Authors: Jan Hartinger; Robert Novotny; Jana Bilkova; Tomas Kvasnicka; Petr Mitas; Martin Sima; Jaroslav Hlubocky; Jan Kvasnicka; Ondrej Slanar; Jaroslav Lindner Journal: Med Princ Pract Date: 2018-05-13 Impact factor: 1.927
Authors: Lotte Jacobs; Jan Emmerechts; Chantal Mathieu; Marc F Hoylaerts; Frans Fierens; Peter H Hoet; Benoit Nemery; Tim S Nawrot Journal: Environ Health Perspect Date: 2010-02 Impact factor: 9.031