Department of Nursing, Daegu Haany University, Gyeongbuk 38610, Korea.
College of Nursing, Hanyang University, Seoul 04763, Korea.
Int J Environ Res Public Health. 2021 Sep 23;18(19):9992. doi: 10.3390/ijerph18199992.
Insufficient research exists for position change intervals to eradicate pressure ulcers. We tried to provide evidence for the position change interval by comparing peak pressure, risk area ratio, and the time to reach 30 mmHg and 60 mmHg, and presented this in detail, according to the angle in the three positions. The study conducted RCTs on a total of 64 healthy adults. For two hours, interface pressure measurements were compared with 30° and 90° tilting at the inclined, 0° and 45° head-of-bed (HOB) elevation at the supine, and 30° and 45° HOB elevation at the Fowler's position. The peak pressure on 30° tilting remained less than 60 mmHg for 2 h, unlike 90° tilting. To reach 60 mmHg took 78.18 min at 30° tilting, within 30 min at the 30° supine, 30° and 45° at the Fowler's position, and 39.55 min at 0° supine. The pressure difference according to the angles was only significant at 30° and 90° tilting, with no difference in the other groups. To prevent pressure ulcers, position changes are required every 2 h in the 30° tilting position, every 1.5 to 2 h at 0° supine, and at least every 1.5 h for all the other positions.
关于体位变换间隔时间能否消除压疮，目前研究尚不充分。我们试图通过比较最大压力、危险区域比以及达到 30mmHg 和 60mmHg 的时间，为体位变换间隔时间提供证据，并根据三个体位的角度详细呈现这些结果。本研究共纳入了 64 名健康成年人，进行了随机对照试验。结果显示，在倾斜 30°和 90°时，仰卧位抬高床头 0°和 45°时，以及 Fowler 位抬高床头 30°和 45°时，与 2 小时的界面压力测量相比，2 小时内 30°倾斜的最大压力始终低于 60mmHg，而 90°倾斜则超过了 60mmHg。在 30°倾斜时，达到 60mmHg 需要 78.18 分钟，而在 30°仰卧位、30°和 45° Fowler 位以及 0°仰卧位，达到 60mmHg 的时间均在 30 分钟以内。仅在 30°和 90°倾斜时，角度之间的压力差有统计学意义，而在其他组中则无差异。为预防压疮，30°倾斜时需要每 2 小时变换体位，0°仰卧位时需要每 1.5-2 小时变换体位，而其他所有体位则至少需要每 1.5 小时变换体位。
