scholarly journals IMPACT OF CLOPIDOGREL ON-TREATMENT PLATELET REACTIVITY ON STENT THROMBOSIS AFTER PERCUTANEOUS CORONARY INTERVENTION: RESULTS FROM A COLLABORATIVE META-ANALYSIS OF INDIVIDUAL PARTICIPANT DATA

2011 ◽  
Vol 57 (14) ◽  
pp. E1632 ◽  
Author(s):  
Somjot Brar ◽  
Jurrien ten Berg ◽  
Rossella Marcucci ◽  
Matthew J. Price ◽  
Marco Valgimigli ◽  
...  
Keyword(s):  
Percutaneous Coronary Intervention ◽  
Stent Thrombosis ◽  
Platelet Reactivity ◽  
Meta Analysis ◽  
Coronary Intervention ◽  
Individual Participant Data ◽  
Percutaneous Coronary ◽  
Individual Participant

scholarly journals Everolimus-Eluting versus Paclitaxel-Eluting Stents in Percutaneous Coronary Intervention: Meta-Analysis of Randomized Trials

Thrombosis ◽  
2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Ashraf Alazzoni ◽  
Ayman Al-Saleh ◽  
Sanjit S. Jolly
Keyword(s):  
Percutaneous Coronary Intervention ◽  
Stent Thrombosis ◽  
Randomized Trials ◽  
Meta Analysis ◽  
Coronary Intervention ◽  
Target Vessel ◽  
Late Stent Thrombosis ◽  
Very Late Stent Thrombosis ◽  
Target Vessel Revascularization ◽  
Percutaneous Coronary

Background. Individual randomized trials have suggested that everolimus-eluting stents may have improved clinical outcomes compared to paclitaxel-eluting stents, but individual trials are underpowered to examine outcomes such as mortality and very late stent thrombosis. Methods. Medline, Cochrane, and conference proceedings were searched for randomized trials comparing everolimus versus paclitaxel-eluting stents for percutaneous coronary intervention. Results. 6792 patients were included from 4 randomized controlled trials. Stent thrombosis was reduced with everolimus stents versus paclitaxel stents (0.7% versus 2.3%; OR: 0.32; CI: 0.20–0.51; P<0.00001). The reductions in stent thrombosis were observed in (i) early stent thrombosis (within 30 days) (0.2% versus 0.9%; OR: 0.24; P=0.0005), (ii) late (day 31–365) (0.2% versus 0.6%; OR: 0.32; P=0.01), and (iii) very late stent thrombosis (>365 days) (0.2% versus 0.8%; OR: 0.34; P=0.009). The rates of cardiovascular mortality were 1.2% in everolimus group and 1.6% in paclitaxel group (OR: 0.85; P=0.43). Patients receiving everolimus-eluting stents had significantly lower myocardial infarction events and target vessel revascularization as compared to paclitaxel-eluting stents. Interpretation. Everolimus compared to paclitaxel-eluting stents reduced the incidence of early, late, and very late stent thrombosis as well as target vessel revascularization.

Early stent thrombosis with bivalirudin in patients undergoing percutaneous coronary intervention

2015 ◽  
Vol 113 (05) ◽  
pp. 1010-1020 ◽  
Author(s):  
Raffaele Piccolo ◽  
Chiara De Biase ◽  
Carolina D’Anna ◽  
Bruno Trimarco ◽  
Federico Piscione ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Percutaneous Coronary Intervention ◽  
Stent Thrombosis ◽  
Major Bleeding ◽  
Meta Analysis ◽  
Academic Research ◽  
Coronary Intervention ◽  
Bleeding Events ◽  
Percutaneous Coronary ◽  
Research Consortium

SummaryAlthough bivalirudin has been shown to reduce bleeding events in patients undergoing percutaneous coronary intervention, residual concerns remain about a possible higher risk of early (within 30 days) stent thrombosis (ST). Therefore, we performed a meta-analysis of randomised trials reporting ST events with bivalirudin compared to other antithrombotic therapies (heparins ± glycoprotein IIb/IIIa inhibitors). A systematic literature search of electronic resources was performed through May, 2014. The primary endpoint was definite early ST, according to Academic Research Consortium criteria. Secondary endpoints included: all-cause death, myocardial infarction and major bleeding. A total of 11 trials, including 16,415 patients, were accrued. Compared to other regimens, bivalirudin significantly increased the risk of early ST (odds ratio [OR]=1.80; 95 % confidence interval [CI], 1.28 2.52; p=0.0007) and reduced the risk of major bleeding (OR [95 %CI]=0.64 [0.51 0.82], p=0.0003), with a comparable risk of mortality or myocardial infarction. The higher risk of early ST was mainly attributable to acute (OR [95 % CI] =4.33 [2.33 8.05], p < 0.001) than subacute (OR [95 % CI] =0.89 [0.53 1.50], p =0.67) ST events (p for interaction < 0.001). Non-fatal myocardial infarction was the most common presentation (83 %) of early ST events, while death occurred infrequently (about 5 %). In conclusion, in patients undergoing PCI, bivalirudin compared to heparins is associated with a higher risk of early ST, which is mainly related to more frequent acute events. Further studies are required to evaluate alternative strategies to mitigate this risk, without hampering the benefits derived from the reduction in bleeding events with bivalirudin.

scholarly journals Effect of CYP3A4*22 and PPAR-α Genetic Variants on Platelet Reactivity in Patients Treated with Clopidogrel and Lipid-Lowering Drugs Undergoing Elective Percutaneous Coronary Intervention

Genes ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 1068
Author(s):  
Thomas Bergmeijer ◽  
Alfi Yasmina ◽  
Gerrit Vos ◽  
Paul Janssen ◽  
Christian Hackeng ◽  
...  
Keyword(s):  
Percutaneous Coronary Intervention ◽  
Genetic Variants ◽  
Platelet Reactivity ◽  
Meta Analysis ◽  
Statistical Significance ◽  
Coronary Intervention ◽  
Lipid Lowering ◽  
Study Cohort ◽  
Elective Percutaneous Coronary Intervention ◽  
Percutaneous Coronary

This study aims to determine whether genetic variants that influence CYP3A4 expression are associated with platelet reactivity in clopidogrel-treated patients undergoing elective percutaneous coronary intervention (PCI), and to evaluate the influence of statin/fibrate co-medication on these associations. A study cohort was used containing 1124 consecutive elective PCI patients in whom CYP3A4*22 and PPAR-α (G209A and A208G) SNPs were genotyped and the VerifyNow P2Y12 platelet reactivity test was performed. Minor allele frequencies were 0.4% for CYP3A4*22/*22, 6.8% for PPAR-α G209A AA, and 7.0% for PPAR-α A208G GG. CYP3A4*22 was not associated with platelet reactivity. The PPAR-α genetic variants were significantly associated with platelet reactivity (G209A AA: −24.6 PRU [−44.7, −4.6], p = 0.016; A208G GG: −24.6 PRU [−44.3, −4.8], p = 0.015). Validation of these PPAR-α results in two external cohorts, containing 716 and 882 patients, respectively, showed the same direction of effect, although not statistically significant. Subsequently, meta-analysis of all three cohorts showed statistical significance of both variants in statin/fibrate users (p = 0.04 for PPAR-a G209A and p = 0.03 for A208G), with no difference in statin/fibrate non-users. In conclusion, PPAR-α G209A and A208G were associated with lower platelet reactivity in patients undergoing elective PCI who were treated with clopidogrel and statin/fibrate co-medication. Further research is necessary to confirm these findings.

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