JACC:粉碎普拉格雷片治疗接受PPCI的STEMI患者更有效

2016-04-26 MedSci MedSci原创

口服P2Y12受体拮抗剂诱导的血小板抑制作用在接受急诊经皮冠状动脉介入治疗(PPCI)的ST段抬高心肌梗死(STEMI)患者中被延迟,这可能是由于吸收受损影响药物的药代动力学(PK)和药效学(PD)。药片碾碎已被建议应用于该手术中,会达到更有利的PK/PD效果。迄今为止,还没有研究调查粉碎普拉格雷对于PK/PD的影响。本研究旨在确定,在STEMI患者接受PPCI过程中,粉碎的普拉格雷与整片药物相比

口服P2Y12受体拮抗剂诱导的血小板抑制作用在接受急诊经皮冠状动脉介入治疗(PPCI)的ST段抬高心肌梗死(STEMI)患者中被延迟,这可能是由于吸收受损影响药物的药代动力学(PK)和药效学(PD)。药片碾碎已被建议应用于该手术中,会达到更有利的PK/PD效果。迄今为止,还没有研究调查粉碎普拉格雷对于PK/PD的影响。

本研究旨在确定,在STEMI患者接受PPCI过程中,粉碎的普拉格雷与整片药物相比,是否会产生更有利的药物生物利用度和血小板抑制作用。

该前瞻性,随机,开放性研究评估了接受PPCI(n=52)的STEMI患者,采用普拉格雷60毫克负荷剂量(LD)整片或粉碎片治疗。PK/PD分析均在7个时间点进行。PD效果通过P2Y12反应单位和血小板反应性指数测量,PK通过普拉格雷活性代谢物的血浆水平进行检测。

与整片药物相比,粉碎的普拉格雷会在LD后30分钟减少P2Y12反应单位,并在LD后1,2(164 vs 95;最小二乘平均差=68;95%可信区间:10〜126;主要终点)和4小时持续。显著差异在LD后6h不再存在。同时调查结果显示了血小板反应性指数。因此,粉碎普拉格雷片治疗会降低较高的治疗时血小板反应率。PK分析显示,与整片普拉格雷相比,粉碎的普拉格雷吸收会快>3倍。

在进行PPCI的STEMI患者中,与整片普拉格雷相比,粉碎普拉格雷会有更快的药物吸收,因此,会有更迅速和有效的抗血小板作用。

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    2016-07-21 hbwxf
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    2017-01-15 longqijun256
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