Stroke:替奈普酶静脉溶栓前逆转达比加群的抗凝作用

2020-07-19 杨中华 脑血管病及重症文献导读

达比加群是预防心房颤动血栓的一种有效且常用的处方药。与维生素K拮抗剂不同,它不需要抗凝监测,而且抗凝作用起效快。

达比加群是预防心房颤动血栓的一种有效且常用的处方药。与维生素K拮抗剂不同,它不需要抗凝监测,而且抗凝作用起效快。伊达鲁珠单抗是一种对达比加群具有高亲和力的单克隆抗体,已被证明能快速和永久地逆转达比加群的抗凝作用。尽管未被逆转的抗凝是溶栓的禁忌证,但有限的文献表明,在急性缺血性卒中患者静脉注射阿替普酶之前使用依达鲁珠单抗是安全的。

替萘普酶是阿替普酶的一种转基因形式,具有更高的纤维蛋白特异性和更长的半衰期,可以单次推注给药。与标准剂量阿替普酶相比,静脉注射替奈普酶(0.25–0.40 mg/kg)可增加颅内大血管闭塞患者的早期再通率,对小卒中患者是安全的。替萘普酶极有可能至少不劣于阿替普酶,尽管确证试验仍在继续。

逆转达比加群抗凝作用后使用替萘普酶静脉溶栓只有一项单病例报道。2020年5月来自新西兰的James Beharry等在 Stroke 上报道了13例发病时服用达比加群的缺血性卒中患者,这些患者给予伊达鲁珠单抗后给予了替奈普酶静脉溶栓治疗。

该研究纳入了13例连续的伊达鲁珠单抗逆转达比加群的抗凝作用后给予替奈普酶静脉溶栓治疗的患者,患者来自于新西兰和澳大利亚的两个中心。

这13例患者中,9例未男性,平均年龄79岁,平均 NIHSS 6分。全部13例患者,房颤是使用达比加群的原因。所有患者的凝血酶凝固时间(thrombin clotting time,TCT)延长(平均未80s)。7例为大血管闭塞,并采取血管内治疗,其中2例(29%)使用了替奈普酶后早期再通,故未进行血管内血栓切除术。脑实质出血和症状性出血转换0例。8例(62%)患者达到了良好功能预后(mRS 0-2)。两例死于大面积梗死。

最终作者认为我们的经验提示对于经过选择的急性缺血性卒中患者,给予替奈普酶之前使用伊达鲁珠单抗逆转达比加群的抗凝作用可能是安全的。需要进一步的研究精确估算其作用以及临床意义的出血风险。

原始出处:James Beharry, Michael J. Waters, Roy Drew, et al. Dabigatran Reversal Before Intravenous Tenecteplase in Acute Ischemic Stroke. Stroke. 2020 Mar 25.

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    2020-07-19 gq1688888

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    2020-07-19 jin321

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Blood:达比加群用于高凝风险儿童预防继发性VTE

中心点:采用达比加群(dabigatran)儿科配方预防继发性VTE的患儿,很少会出现复发性VTE。在使用达比加群进行继发性静脉血栓栓塞的预防时,很少有儿童发生大出血或临床相关的非大出血事件。摘要:本研究是一个开放性的单臂的前瞻性队列试验,也是第一个关于儿童采用达比加群预防继发性静脉血栓栓塞(VTE)预后的3期安全性试验。招募12-18岁(第一层)、2-12岁(第二层)和3个月-2岁(第三层)的采

JAMA Neurol:达比加群vs华法林用于脑静脉血栓患者静脉血栓事件的预防

研究发现,CVT抗凝患者中使用达比加群或华法林后,复发VTEs的风险都很低,而且出血的风险相似,表明达比加群和华法林对预防CVT患者复发性VTEs都是安全和有效的