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低分子量肝素血栓预防或剖腹产后没有治疗:试点随机对照试验
Ann M Bruno1, Amanda A Allshouse1, D W Branch1
1Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Utah Health, Salt Lake City, Utah, United States.
American journal of perinatology
|November 25, 2025
概括
这项试点研究发现,由于入学率低,随机分配患者接受低分子量肝素 (LMWH) 或在剖腹产后不进行预防是不可行的. 未来的研究应该探索用于预防分娩后静脉血栓栓塞的替代设计.
科学领域:
- 产科和妇科 产科和妇科
- 药理学 药理学是指药理学的学科.
- 临床试验 临床试验
背景情况:
- 产后静脉血栓塞栓症 (VTE) 是剖腹产 (CD) 后的一个重大风险.
- 药理性血栓预防,例如低分子量肝素 (LMWH),是一种潜在的预防策略.
- 在CD后进行产后VTE预防的个人患者随机化可行性尚未得到充分确立.
研究的目的:
- 评估一项试点随机对照试验 (RCT) 的可行性,该试验将基于体重的LMWH与剖腹产后没有药理性血栓预防进行比较.
- 评估关键可行性指标,包括入学率和留学率.
- 收集关于临床结果的初步数据,如静脉瘤,出血并发症和患者报告的症状.
主要方法:
- 一个单中心,开放标签的试验RCT与18岁以上的个人进行了CD.
- 参与者被随机分配1:1接受基于体重的LMWH14天或没有药理性血栓预防.
- 可行性是通过达到≥35%的入学率和≥85%的保留率来定义的;二级结局包括VTE,伤口血液瘤和出血并发症.
主要成果:
- 在6个月的时间里,694名患者有资格,其中611人接近 (88%) 和64人注册 (10.5%).
- 参与者保留率高达95.3%,但整体入学率没有达到首要可行性目标.
- 预防组之间没有观察到VTE,伤口血液瘤或出血并发症的显著差异.
结论:
- 在这个试点RCT中,由于入学率低,对LMWH或剖腹产后没有药理性血栓预防的个体患者随机化是不可行的.
- 该研究强调了招募产后VTE预防试验的挑战.
- 应考虑替代研究设计,以便在未来的研究中研究产后血栓栓塞预防策略.
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