手术是导致动静脉血栓栓塞的一个重要危险因素，合理的抗凝治疗能够预防血栓形成并改善手术病人的近、远期预后。对目前常用抗凝药物、围手术期预防和治疗血栓栓塞或出血并发症风险效益比进行评估，针对特殊人群、特殊手术等伴有复杂临床情况时的围手术期抗凝管理策略进行探讨。

Preoperative preparation and postoperative treatment of patients used anticoagulant drugs        ZHAO Yu*，YANG Bing. *The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
Corresponding  author ：ZHAO Yu，E-mail：zhaoyu@cta.cq.cn
Abstract    The operation is an important risk factor for leading to arterio-venous thromboembolism. Rational anticoagulant therapy can prevent thrombosis and improve the patient's recent, long-term prognosis. In the article, it explored the assessment of risk-benefit ratio of perioperative prevention and treatment of thromboembolic / bleeding complications as well as perioperative anticoagulation management strategies associated with special groups, special operations and other complex clinical situations.