Roy Niloy, Smith Matthew, Anwar Mohammed, Elsworth Christopher
Royal Oldham Hospital, Oldham, Lancashire, United Kingdom.
Acta Orthop Belg. 2006 Jan;72(1):34-8.
Total knee arthroplasty is sometimes associated with major post-operative bleeding, often requiring transfusion. A prospective, randomised study was undertaken to assess the effect on post-operative bleeding of delaying release of the clamp on the suction drains. One hundred patients were allocated into two groups: Group A- immediate release of drain following release of tourniquet, and Group B- delayed release of the drain clamp by one hour. There was a statistically significant reduction (p = < 0.001) in postoperative bleeding between group A (1050 ml; 95%CI 728 - 1172 ml) compared to group B (732 ml; 95% CI 620- 845 ml). Average drop in corrected haemoglobin and postoperative transfusion requirement were also less in the delayed group. The results show that delaying release of the drains by one hour reduces postoperative blood loss and transfusion requirement following total knee arthroplasty.
全膝关节置换术有时会伴有严重的术后出血，常常需要输血。一项前瞻性随机研究旨在评估延迟松开吸引引流管夹对术后出血的影响。100名患者被分为两组：A组——止血带松开后立即松开引流管，B组——将引流管夹延迟1小时松开。与B组（732毫升；95%可信区间620 - 845毫升）相比，A组（1050毫升；95%可信区间728 - 1172毫升）术后出血有统计学显著减少（p = < 0.001）。延迟组校正血红蛋白的平均下降和术后输血需求也较少。结果表明，全膝关节置换术后将引流管松开延迟1小时可减少术后失血量和输血需求。
