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NEJM:急性缺血性脑卒中,低剂量阿替普酶的治疗效果并不差于标准剂量

2016-05-10 sunshine译 MedSci原创

NEJM:急性缺血性脑卒中,低剂量阿替普酶的治疗效果并不差于标准剂量的治疗效果使用低于标准剂量的阿替普酶对急性缺血性脑卒中进行溶栓治疗可以改善脑出血的结局,还可降低脑出血的风险。采用2*2准因子开放标签设计,随机分配了3310名符合溶栓治疗的患者(中位年龄为67岁; 63%为亚洲人),分别接受低剂量的阿替普酶治疗(0.6 mg/kg)和标准剂量治疗(0.9 mg/kg);随机分组是在患者急性缺血性

使用低于标准剂量的阿替普酶对急性缺血性脑卒中进行溶栓治疗可以改善脑出血的结局,还可降低脑出血的风险。

采用2*2准因子开放标签设计,随机分配了3310名符合溶栓治疗的患者(中位年龄为67岁; 63%为亚洲人),分别接受低剂量的阿替普酶治疗(0.6 mg/kg)和标准剂量治疗(0.9 mg/kg);随机分组是在患者急性缺血性脑卒中发作4.5小时内进行的。

本研究的主要目的是为了探究在主要结果方面(90天死亡或残疾)上,低剂量治疗的效果是否会劣于标准剂量的治疗效果。结果根据改良Rankin量表的得分进行确定。其次是为了确定在症状性脑出血上低剂量治疗是否会优于标准剂量治疗,以及在改良Rankin量表评分的顺序分析上低剂量治疗是否劣于标准剂量。试验包括的935名患者还随机分为强化或指南推荐的血压控制组。

结果发现,低剂量组1607名参与者中共有855名(53.2%)患者出现了主要研究结果,标准剂量组1599名参与者中共有817名(51.1%)发生了主要研究结果。改良Rankin量表评分的顺序分析中低剂量的阿替普酶并不劣于标准剂量。低剂量组1%的参与者发生主要症状性脑出血,而标准剂量组2.1%的参与者发生了主要症状性脑出血;治疗7天内,低剂量组0.5%的参与者死亡,而标准剂量组1.5%的参与者死亡。两组患者在90天死亡率上并没有显着差异(分别为8.5%和10.3%)。

总而言之,本试验主要纳入了亚洲急性缺血性脑卒中患者,研究结果显示低剂量阿替普酶的治疗效果在90天死亡和残疾方面并不劣于标准剂量。而且低剂量阿替普酶治疗后症状性脑出血的发生率很小。

原始出处:

Craig S. Anderson, Thompson Robinson, et al., Low-Dose versus Standard-Dose Intravenous Alteplase in Acute Ischemic Stroke. May 10, 2016DOI: 10.1056/NEJMoa1515510.

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