King's College Hospital NHS Foundation Trust, Denmark Hill, London, United Kingdom.
Hematology Am Soc Hematol Educ Program. 2021 Dec 10;2021(1):485-491. doi: 10.1182/hematology.2021000283.
The combination of frequently abnormal hemostatic markers and catastrophic bleeding as seen with variceal hemorrhage has contributed to the longstanding misperception that chronic liver disease (CLD) constitutes a bleeding diathesis. Laboratory studies of hemostasis in liver disease consistently challenge this with global coagulation assays incorporating activation of the protein C pathway demonstrating rebalanced hemostasis. It is now recognized that bleeding in CLD is predominantly secondary to portal hypertension (rather than a coagulopathy) and additionally that these patients are at increased risk of venous thrombosis, particularly in the portal venous system. This narrative review describes the current understanding of hemostasis in liver disease, as well as the periprocedural management of hemostasis and anticoagulation for management of venous thromboembolism in patients with CLD.
静脉曲张出血时频繁出现异常的止血标志物和灾难性出血,这导致了长期以来的误解,即慢性肝病 (CLD) 构成出血倾向。对肝病中止血的实验室研究通过包含蛋白 C 途径激活的整体凝血检测始终对此提出质疑,表明止血重新达到平衡。现在人们认识到,CLD 中的出血主要是继发于门静脉高压(而不是凝血障碍),此外这些患者发生静脉血栓的风险增加,特别是在门静脉系统中。本叙述性综述描述了目前对肝病中止血的理解,以及围手术期止血和抗凝管理,以治疗 CLD 患者的静脉血栓栓塞症。