标准与高剂量皮格勒基于皮肤冠状动脉干预后血小板功能测试:GRAVITAS随机试验
Matthew J Price1, Peter B Berger, Paul S Teirstein
1Scripps Clinic, La Jolla, California, USA. price.matthew@scrippshealth.org
JAMA
|March 17, 2011
概括
高剂量的克洛皮多格勒在皮肤冠状动脉干预 (PCI) 后高治疗反应率的患者中没有减少心血管事件. 对于这些患者,建议使用标准剂量的克洛皮多格勒.
科学领域:
- 心脏病学 心脏病学
- 药理学 药理学是指药理学的学科.
- 干预心脏病学 干预心脏病学
背景情况:
- 高血小板反应性是皮肤冠状动脉干预 (PCI) 后心血管事件的危险因素.
- 管理高治疗反应性的最佳治疗策略仍未确定.
研究的目的:
- 为了比较高剂量与标准剂量克洛皮多格雷尔的疗效.
- 为了评估PCI后高治疗反应率的患者的结果.
主要方法:
- 使用VerifyNow测定对血栓形成和安全 (GRAVITAS) 试验的测量响应性随机选择了2214名患者.
- 患者接受高剂量 (每日600毫克,每天150毫克) 或标准剂量 (每天75毫克) 克洛皮多格雷尔6个月.
- 主要终点:6个月内心血管死亡,心肌梗塞或支架血栓形成的发生率.
主要成果:
- 在高剂量和标准剂量皮多格勒组之间的初级终点没有显著差异 (2.3%对2.3%;HR,1.01;P = .97).
- 严重或中度出血率在两组之间是相似的 (1.4%对2.3%;HR,0.59;P = .10).
- 高剂量的克洛皮多格勒在30天内显著降低了高治疗反应率 (40%与62%相比;P<.001).
结论:
- 高剂量的克洛皮多格勒并没有改善PCI后高治疗反应率的患者的临床结果.
- 标准剂量的克洛皮多格勒适用于PCI后具有高治疗反应率的患者,使用药物释放支架.
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