Department of Orthopaedics, National Cheng Kung University Medical Center, Tainan, Taiwan.
J Arthroplasty. 2010 Dec;25(8):1240-5. doi: 10.1016/j.arth.2009.08.013. Epub 2009 Oct 17.
Drainage-clamping methods are thought to be effective in reducing blood loss after total knee arthroplasty (TKA). We conducted a systematic review to examine if these methods were effective without increasing the risk of complications. After a comprehensive search, 6 randomized controlled trials involving 603 knees and comparing clamping drainage and the immediate release of the drain after elective TKA were included in this analysis. The results demonstrated that drainage clamping could decrease the volume of drainage, but only clamping for no less than 4 hours could reduce the true blood loss. There was no significant difference between the 2 groups regarding blood transfusion, postoperative range of motion, incidence of thromboembolic events, and wound complications. The current evidence cannot confirm the advantage of clamping drainage after TKA.
夹闭引流法被认为可以有效减少全膝关节置换术后（TKA）的出血量。我们进行了一项系统评价，以研究在不增加并发症风险的情况下这些方法是否有效。经过全面检索，纳入了 6 项涉及 603 个膝关节的随机对照试验，比较了夹闭引流与 TKA 后立即拔管。结果表明，夹闭引流可以减少引流量，但只有夹闭不少于 4 小时才能减少真正的失血量。两组之间在输血、术后活动范围、血栓栓塞事件发生率和伤口并发症方面无显著差异。目前的证据不能证实 TKA 后夹闭引流的优势。
