Ticagrelor Versus Prasugrel in Acute Coronary Syndrome Patients With High On-Clopidogrel Platelet Reactivity Following Percutaneous Coronary Intervention A Pharmacodynamic Study

被引：169

作者：

Alexopoulos, Dimitrios ^{[1
]}

Galati, Anastasia ^{[1
]}

Xanthopoulou, Ioanna ^{[1
]}

Mavronasiou, Eleni ^{[1
]}

Kassimis, George ^{[1
]}

Theodoropoulos, Konstantinos C. ^{[1
]}

Makris, George ^{[1
]}

Damelou, Anastasia ^{[1
]}

Tsigkas, Grigorios ^{[1
]}

Hahalis, George ^{[1
]}

Davlouros, Periklis ^{[1
]}

机构：

[1] Patras Univ Hosp, Dept Cardiol, Patras 26500, Greece

来源：

JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY | 2012年 / 60卷 / 03期

关键词：

pharmacology; platelet reactivity; platelets; prasugrel; ticagrelor; ASPIRIN-TREATED PATIENTS; HIGH-DOSE CLOPIDOGREL; ARTERY-DISEASE; CARDIOVASCULAR EVENTS; ACHIEVES GREATER; INHIBITION; TRIAL; OUTCOMES; METAANALYSIS; AGGREGATION;

D O I：

10.1016/j.jacc.2012.03.050

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

Objectives The study aimed to compare the antiplatelet action of ticagrelor with prasugrel in acute coronary syndrome (ACS) patients with high on-treatment platelet reactivity (HTPR) while on clopidogrel after percutaneous coronary intervention (PCI). Background Newer P2Y12 inhibitors like prasugrel and ticagrelor provide stronger platelet inhibition compared with clopidogrel. Both agents are efficacious in patients with HTPR while on clopidogrel, but direct comparison between them has not yet been reported. Methods In a prospective, single-center, single-blind study, 44 (of 139 screened, 31.7%) ACS patients with HTPR while on clopidogrel 24 h post-PCI were randomized to either ticagrelor 90 mg twice daily or prasugrel 10 mg once daily for 15 days with a crossover directly to the alternate treatment for another 15 days. HTPR was defined as platelet reactivity units (PRU) >= 235 as assessed by the VerifyNow P2Y12 function assay. Results The primary endpoint of platelet reactivity at the end of the 2 treatment periods was lower for ticagrelor (32.9 PRU, 95% confidence interval [CI]: 18.7 to 47.2) compared with prasugrel (101.3 PRU, 95% CI: 86.8 to 115.7) with a least squares mean difference of -68.3 PRU (95% CI: -88.6 to -48.1; p < 0.001). The secondary endpoint of HTPR rate was 0% for ticagrelor and 2.4% for prasugrel (1 of 42, p = 0.5). No patient exhibited a major bleeding event at either treatment group. Conclusions In patients with ACS exhibiting HTPR while on clopidogrel 24 h post-PCI, ticagrelor produces a significantly higher platelet inhibition compared with prasugrel. (Ticagrelor Versus Prasugrel in Acute Coronary Syndromes After Percutaneous Coronary Intervention; NCT01360437) (J Am Coll Cardiol 2012;60:193-9) (c) 2012 by the American College of Cardiology Foundation

引用

页码：193 / 199

页数：7

共 29 条

[1] Prasugrel overcomes high on-clopidogrel platelet reactivity in chronic coronary artery disease patients more effectively than high dose (150 mg) clopidogrel [J].