Nixon J, McElvenny D, Mason S, Brown J, Bond S
Leeds Teaching Hospitals NHS Trust, St James's University Hospital, UK.
Int J Nurs Stud. 1998 Aug;35(4):193-203. doi: 10.1016/s0020-7489(98)00023-6.
Four hundred and forty-six general, vascular and gynaecological surgical patients were recruited to a two centre, double triangular sequential randomised controlled trial to compare the post-operative pressure sore incidence in patients positioned on the standard operating table mattress with those positioned on the dry visco-elastic polymer pad (Action Products Inc.). Two hundred and twenty two patients were randomised to the experimental group and 224 to the standard mattress. The main endpoint failure rate (a pressure sore) was found to be 11% (22/205) for patients allocated to the dry visco-elastic polymer pad and 20% (43/211) for patients allocated to the standard operating table mattress. There was a significant reduction in the odds of developing a pressure sore on the dry visco-elastic polymer pad as compared to the standard, [symbol see text] = 0.46 with 95% confidence interval of (0.26, 0.82), P = 0.010. The adjusted point estimates of the probability of developing a pressure sore on the dry visco-elastic polymer pad and the standard operating table mattress were 0.11 and 0.21 respectively.
446名普通外科、血管外科和妇科手术患者被纳入一项双中心、双三角序贯随机对照试验，以比较使用标准手术台床垫的患者与使用干式粘弹性聚合物垫（Action Products Inc.）的患者术后压疮发生率。222名患者被随机分配至实验组，224名患者被分配至使用标准床垫组。结果发现，分配至干式粘弹性聚合物垫的患者主要终点失败率（压疮）为11%（22/205），分配至标准手术台床垫的患者为20%（43/211）。与标准床垫相比，使用干式粘弹性聚合物垫发生压疮的几率显著降低，[符号见原文]=0.46，95%置信区间为（0.26，0.82），P=0.010。使用干式粘弹性聚合物垫和标准手术台床垫发生压疮概率的校正点估计值分别为0.11和0.21。
