Department of Orthopaedic Surgery, Loma Linda University Medical Center, Loma Linda, CA 92354, USA.
Clin Orthop Relat Res. 2010 Jan;468(1):158-62. doi: 10.1007/s11999-009-0955-y. Epub 2009 Jun 26.
Soft tissue fluid retention is a common problem after arthroscopy, with as much as 2% of patients having complications develop. A fenestrated outflow cannula has been introduced to reduce interstitial swelling. We tested the ability of this outflow cannula design to reduce fluid weight gain. We enrolled 28 patients undergoing shoulder arthroscopy and randomized them into two groups using fenestrated outflow versus conventional cannulae. The conventional group had greater weight gain as a function of the procedure duration than the fenestrated outflow group (slope = 0.542 +/- 1.160 kg/hour versus 0.0144 +/- 0.932 kg/hour). The conventional group also had greater weight gain as a function of fluid volume than the fenestrated outflow group (slope = 0.022 +/- 0.038 kg/L versus 0.002 +/- 0.341 kg/L). Compared with conventional nonoutflow cannulae, fenestrated outflow cannulae with negative pressure reduced weight gain associated with longer arthroscopic surgeries and increased arthroscopic fluid volume.
Level I, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.
软组织液体积聚是关节镜术后的常见问题，多达 2%的患者会出现并发症。一种带孔的流出管已被引入以减少间质肿胀。我们测试了这种流出管设计减少液体重量增加的能力。我们招募了 28 名接受肩关节镜检查的患者，并使用带孔流出管与常规管将他们随机分为两组。常规组的体重增加斜率（0.542 +/- 1.160 kg/hour）大于带孔流出管组（0.0144 +/- 0.932 kg/hour），这与手术时间有关。常规组的体重增加斜率（0.022 +/- 0.038 kg/L）也大于带孔流出管组（0.002 +/- 0.341 kg/L），这与关节镜灌流液量有关。与常规非流出管相比，带负压的带孔流出管可减少与较长关节镜手术和增加关节镜灌流液量相关的体重增加。
I 级，治疗研究。有关证据水平的完整描述，请参见作者指南。
