Tran Huyen A, Merriman Eileen, Baker Ross, Curnow Jennifer, Young Laura, Tan Chee Wee, McRae Simon, Chunilal Sanjeev D
Haemostasis Thrombosis Unit, The Alfred Hospital, Melbourne, Victoria, Australia.
Australian Centre for Blood Diseases, Monash University, Melbourne, Victoria, Australia.
Intern Med J. 2025 Jul;55(7):1174-1183. doi: 10.1111/imj.70103. Epub 2025 May 31.
Direct oral anticoagulants (DOACs) are widely prescribed to prevent and treat venous and arterial thromboembolism, supported by published evidence, and are preferred over warfarin in many guidelines. Although the risk of major bleeding, in particular intracranial haemorrhage (ICH), is decreased with DOACs, gastrointestinal bleeding is increased with some DOACs, and the case fatality rate of bleeding remains high. Therefore, it is important to (i) prescribe DOACs appropriately, (ii) have strategies to manage major bleeding including the use of specific reversal agents and (iii) interrupt and resume DOACs for procedures. The main recommendations are as follows: (i) Select the appropriate dose of DOAC according to indications and consider patient factors to minimise bleeding risks; (ii) DOACs do not require routine laboratory testing; (iii) for life-threatening uncontrollable bleeding, specific agents can be used to reverse the anticoagulant effects of DOACs; and (iv) DOACs can be interrupted for planned procedures without the need for 'bridging' with low-molecular-weight heparin (LMWH). The anticoagulant effects of DOACs can be reversed with specific agents, such as andexanet for apixaban and rivaroxaban and idarucizumab for dabigatran. If not available, pro-haemostatic agents such as prothrombin complex concentrates or activated prothrombin complex concentrates can be considered. DOACs can be interrupted and resumed for procedures without the need for 'bridging' with LMWH.
直接口服抗凝剂(DOACs)被广泛用于预防和治疗静脉及动脉血栓栓塞,有已发表的证据支持,并且在许多指南中比华法林更受青睐。尽管使用DOACs可降低大出血风险,尤其是颅内出血(ICH),但某些DOACs会增加胃肠道出血风险,且出血的病死率仍然很高。因此,重要的是:(i)合理开具DOACs处方;(ii)制定管理大出血的策略,包括使用特定的逆转剂;(iii)针对手术中断并重新开始使用DOACs治疗。主要建议如下:(i)根据适应证选择合适的DOAC剂量,并考虑患者因素以将出血风险降至最低;(ii)DOACs不需要常规实验室检测;(iii)对于危及生命的难以控制的出血,可使用特定药物逆转DOACs的抗凝作用;(iv)DOACs可因计划性手术而中断,无需用低分子量肝素(LMWH)进行“桥接”。DOACs的抗凝作用可用特定药物逆转,如用于阿哌沙班和利伐沙班的andexanet以及用于达比加群的依达赛珠单抗。如果没有这些药物,可考虑使用凝血酶原复合物浓缩剂或活化凝血酶原复合物浓缩剂等促凝血药物。DOACs可因手术而中断并重新开始使用,无需用LMWH进行“桥接”。