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管理肺栓塞:从出现到延伸治疗。

Managing pulmonary embolism from presentation to extended treatment.

机构信息

Department of Haematological Medicine, King's College Hospital, London, UK.

Department of Haematological Medicine, King's College Hospital, London, UK.

出版信息

Thromb Res. 2014 Feb;133(2):139-48. doi: 10.1016/j.thromres.2013.09.040. Epub 2013 Oct 14.

Abstract

Pulmonary embolism (PE) remains a major healthcare problem. PE presents with a variety of non-specific symptoms, and confirmation of diagnosis involves the use of clinical risk scores, scanning techniques and laboratory tests. Treatment choice is informed by the risk of sudden death, with high-risk patients recommended to receive thrombolytic therapy or thrombectomy. Patients with less severe presentations are given anticoagulant therapy, traditionally with parenteral heparins in the acute phase of treatment, transitioning to oral vitamin K antagonists (VKAs). The limitations of these agents and the introduction of non-VKA oral anticoagulants challenge this paradigm. To date, clinical studies of four non-VKA oral anticoagulants to treat acute thrombosis have been published, and rivaroxaban is now approved for treatment and prevention of PE (and deep vein thrombosis). Rivaroxaban and apixaban alone, and dabigatran and edoxaban after parenteral anticoagulant induction, were non-inferior to enoxaparin/VKA for the prevention of recurrent venous thromboembolism; the risk of major bleeding was similar with dabigatran and edoxaban and significantly reduced with rivaroxaban and apixaban. Patients with an initial PE are recommended to receive continued anticoagulation for 3 months or longer, depending on individual risk factors, and studies of non-VKA oral anticoagulants have shown a continued benefit for up to 2 years, without a significantly increased risk of major bleeding. Given that the non-VKA oral anticoagulants are given at fixed doses without the need for routine coagulation monitoring, their adoption is likely to ease the burden on both PE patients and healthcare practitioners when longer-term or extended anticoagulation is warranted.

摘要

肺栓塞(PE)仍然是一个主要的医疗保健问题。PE 表现出多种非特异性症状,确诊需要使用临床风险评分、扫描技术和实验室检查。治疗选择取决于突然死亡的风险,高危患者建议接受溶栓治疗或血栓切除术。症状较轻的患者给予抗凝治疗,传统上在治疗的急性期给予静脉内肝素,然后转为口服维生素 K 拮抗剂(VKA)。这些药物的局限性以及非 VKA 口服抗凝剂的引入挑战了这一模式。迄今为止,已有四项非 VKA 口服抗凝剂治疗急性血栓形成的临床研究发表,利伐沙班现已获准用于治疗和预防 PE(和深静脉血栓形成)。利伐沙班和阿哌沙班单独使用,以及在给予静脉内抗凝剂诱导后使用达比加群酯和依度沙班,在预防复发性静脉血栓栓塞方面与依诺肝素/VKA 无差异;达比加群酯和依度沙班的大出血风险与 VKA 相似,而利伐沙班和阿哌沙班的大出血风险显著降低。建议初始患有 PE 的患者根据个体危险因素继续抗凝治疗 3 个月或更长时间,非 VKA 口服抗凝剂的研究表明,最长可达 2 年的持续获益,而大出血风险没有显著增加。鉴于非 VKA 口服抗凝剂以固定剂量给药,无需常规凝血监测,因此在需要长期或延长抗凝治疗时,它们的采用可能会减轻 PE 患者和医疗保健从业者的负担。

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