From the Loyola University Chicago Stritch School of Medicine, Maywood, Illinois.
Albany Medical Center Department of Plastic and Reconstructive Surgery, Albany, New York.
J Patient Saf. 2021 Dec 1;17(8):e1851-e1854. doi: 10.1097/PTS.0000000000000728.
Padded adhesive bandages are frequently used in the inpatient setting for sacral pressure injury prevention, but it is unclear whether they truly decrease interface pressure. We hypothesized such devices reduce sacral peak interface pressure in the supine position, which would be further reduced in 30-degree reclined and upright seated positions.
Study participants rested with their sacrum on a pressure-sensing mat, in 3 positions, for 30 seconds each: (1) sitting upright; (2) supine; and (3) supine against 30-degree wedge. Measurements were made with and without a padded adhesive bandage overlying the sacrum. Age, sex, and body mass index (BMI) were collected. These variables were entered sequentially, in an a priori order to construct a linear mixed-effects model.
Forty healthy adults participated. After controlling for by-subject variation, age, and sex, BMI did not influence peak sacral pressure (P = 0.22), although the effect of body position was significant (P < 0.01). Subsequent addition of padded adhesive dressing was nonsignificant (P = 0.17); sacral peak pressure was similar with a padded adhesive dressing (247.8 ± 147.3 mm Hg) or without (mean ± standard deviation = 229.8 ± 127.7 mm Hg). Lastly, there was no significant interaction between BMI and body position (P = 0.11).
Padded adhesive bandages did not reduce interface pressure in any position. Sacral pressure was highest in the supine position and was not specifically affected by BMI. If padded bandages provide clinically significant reduction in pressure injury incidence, it is not simply through the reduction of interface pressure.
软垫粘性绷带常用于住院环境中预防骶部压力性损伤，但尚不清楚它们是否确实能降低界面压力。我们假设这些装置能降低仰卧位时骶部的峰值界面压力，而在 30 度倾斜卧位和直立坐姿时压力进一步降低。
研究参与者将骶骨放在压力感应垫上，分别在 3 个位置各休息 30 秒：（1）坐直；（2）仰卧；（3）仰卧位靠 30 度楔形垫。在骶骨上覆盖软垫粘性绷带和不覆盖时分别进行测量。记录年龄、性别和体重指数（BMI）。按先验顺序依次输入这些变量，构建线性混合效应模型。
40 名健康成年人参与了研究。在控制个体差异、年龄和性别后，BMI 对骶骨峰值压力没有影响（P=0.22），尽管体位的影响是显著的（P<0.01）。随后加入软垫粘性敷料的影响不显著（P=0.17）；使用和不使用软垫粘性敷料时，骶骨峰值压力相似（分别为 247.8±147.3mmHg 和 229.8±127.7mmHg）。最后，BMI 和体位之间没有显著的交互作用（P=0.11）。
软垫粘性绷带在任何体位都没有降低界面压力。仰卧位时骶部压力最高，BMI 对其没有特殊影响。如果软垫绷带能显著降低压疮的发生率，那么这并不是通过降低界面压力来实现的。
