NEJM:延长利伐沙班预防DVT的持续时间

2018-10-05 杨中华 脑血管病及重症文献导读

因急性内科疾病主要的患者,比如心衰、呼吸功能不全、卒中和感染或炎性疾病,处于静脉血栓栓塞的高风险之中。已经被证实的危险评分还包括一些额外的因素,比如缺乏运动、老年、癌症、以前静脉血栓栓塞事件以及D2聚体升高,这些评分有利于识别那一些患者濒临症状性静脉血栓栓塞风险之中。


因急性内科疾病主要的患者,比如心衰、呼吸功能不全、卒中感染或炎性疾病,处于静脉血栓栓塞的高风险之中。已经被证实的危险评分还包括一些额外的因素,比如缺乏运动、老年、癌症、以前静脉血栓栓塞事件以及D2聚体升高,这些评分有利于识别那一些患者濒临症状性静脉血栓栓塞风险之中。

预防性抗凝能够降低50 - 60%在院静脉血栓栓塞,但是依据当前指南这些患者出院后很少继续抗凝治疗。出院后6周仍然存在症状性静脉血栓栓塞(包括致死性肺栓塞)的风险。不过,延长预防抗凝时间的研究显示这种方法增加严重出血的风险,并且其获益主要源于无症状深静脉血栓形成的风险。因此,2018年9月来自美国的Alex C. Spyropoulos等在NEJM上公布了MARINER试验结果,目的在于探讨对于处于静脉血栓栓塞风险的内科住院患者,出院时给予45天利伐沙班的疗效。

MARINER为随机,双盲,安慰剂对照,多国参与的临床试验。纳入的标准主要包括:年龄>=40岁,已经住院至少3天且不超过10天,符合以下一项标准:心衰合并左室射血分数<=45%,急性呼吸功能不全或COPD加重,急性缺血性卒中,或急性感染或炎性疾病,包括风湿性疾病。同时,这些纳入的患者还需要具备一些额为的静脉血栓栓塞的危险因素比如改良IMPROVE危险评分>=4分,或2分或3分加D2具体超过正常值2倍以上。纳入的患者在本次住院期间必须接受了LMWH或肝素以预防血栓。排除标准包括存在抗凝或双抗的适应症,活动性癌(active cancer),最近出血的病史(3个月内)或出血高风险,或其他利伐沙班的禁忌症。

纳入的患者随机按照1:1的比例接受利伐沙班或安慰剂治疗。出院当天或第二天进行随机,按照国家和肌酐清除率(>=30和<50ml /min或>= 50 ml/min)进行分层随机。

利伐沙班的使用方法:肌酐清除率>= 50 ml/min者,利伐沙班10 mg,每天一次;肌酐清除率>=30和<50ml /min者,利伐沙班7.5 mg,每天一次。服用利伐沙班的疗程为45天(因为以前的研究显示大约75%的出院后静脉血栓栓塞事件发生在出院后45天内)。

主要有效性复合终点为任何症状性静脉血栓栓塞(比如腿深静脉血栓形成或非致死性肺栓塞)或静脉血栓栓塞相关死亡(比如肺栓塞所致死亡或不能排除肺栓塞引起的死亡)。

该研究共随机了12024例患者,12019例进行了ITT分析。利伐沙班和安慰剂组的主要有效性终点发生率分别为0.83%和1.1%( HR, 0.76; 95% CI, 0.52 to 1.09; P = 0.14)。利伐沙班组和安慰剂组症状性非致死性静脉血栓栓塞(事先预设二级终点)发生率分别为0.18%和0.42% (HR, 0.44; 95% CI, 0.22 to 0.89)。两组严重出血发生率分别为0.28%和0.15% (HR, 1.88; 95% CI, 0.84 to 4.23)。

最终作者认为与安慰剂相比,内科住院患者出院后给予45天利伐沙班与较低风险的症状性静脉血栓栓塞和静脉血栓栓塞相关死亡无关。严重出血发生率低。

原始出处:

AC Spyropoulos ,et al.Rivaroxaban for Thromboprophylaxis after Hospitalization for Medical Illness.N Engl J Med. 2018 Sep 20;379(12):1118-1127. doi: 10.1056/NEJMoa1805090. Epub 2018 Aug 26.

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    2022-09-18 ms8000000609249056

    谢谢分享。

    0

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    2020-07-21 lovetcm

    #深静脉血栓#低危人群无需用药

    0

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    2019-06-27 amy0558
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    2018-10-07 zhwj
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    2018-10-05 天地飞扬

    了解一下,谢谢分享!

    0

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欧洲批准:利伐沙班联合阿司匹林可用于冠心病和外周动脉疾病二级预防

近日,欧洲委员会(EC)批准利伐沙班(2.5 mg,每日两次)联合阿司匹林(75~100 mg,每日一次)用于预防高危的冠心病或有症状的外周动脉疾病患者的血栓事件。

J Am Coll Cardiol:利伐沙班致命性或不可逆性出血和缺血性事件知多少

发表在《J Am Coll Cardiol》的一项研究,调查了急性冠状动脉综合征患者(ACS)中利伐沙班的致命性或不可逆性出血和缺血性事件。

J Am Coll Cardiol:亚洲房颤患者标准和低剂量利伐沙班之争 谁更胜一筹?

房颤(AF)与卒中风险增加5倍相关。华法林可有效预防AF患者的卒中,但其使用受到食物和药物相互作用、频繁监测、剂量调整及出血风险的限制。与其他种族群体相比,亚洲人群使用华法林的出血风险更高,尤其是颅内出血,可能导致亚洲人群中华法林使用不足的发生率较高,特别是在非维生素K拮抗剂口服抗凝药(NOAC)时代来临之前。