For someone confined to bed, prevent pressure injuries with an appropriate support surface, regular repositioning and daily skin checks
Older hip-fracture patients with pressure injuries before surgery had roughly 20% higher 30-day mortality odds. Powered air surfaces reduced new pressure injuries by about 60% in pooled comparisons; a trial that reliably implemented repositioning reported about 70% fewer. Avoid prolonged prone positioning. Check sacrum/tailbone, heels, hips, shoulders and back daily, and seek nursing/medical advice that day for redness that does not blanch with pressure.
What it takes
Powered alternating-pressure home mattresses start at a few hundred RMB in China. Repositioning takes minutes, but a two-to-three-hour routine including nights is difficult for one caregiver alone.
What you may gain
Among 19,520 US hip-fracture surgical patients in NSQIP 2016–2019, preoperative pressure ulcers were associated with higher adjusted 30-day mortality, reported as OR 1.2, a 21% odds increase, P=0.004. Associations also included DVT OR 1.59, pneumonia 1.39, unplanned readmission 1.43 and 0.4 extra hospital days. A cohort of 324 hospitalized older adults, mean age 86, followed for a median 18 months found pressure ulcers independently associated with mortality, HR 1.500, 95% CI 1.059–2.126, P=0.020, after other measured factors were considered. A network meta-analysis of 65 randomized trials found powered active-air surfaces versus standard hospital surfaces reduced pressure-ulcer incidence, RR 0.42 (0.29–0.63), moderate certainty; powered hybrid-air surfaces had RR 0.22 (0.07–0.66). A 2026 Cochrane review of 11 trials and 4,462 participants found two-hour versus four-hour turning uncertain, RR 1.05 (0.79–1.39), very low certainty; other intervals were similarly uncertain. In a 1,226-patient ICU trial, wearable sensors with real-time visual reminders improved implementation of two-hour repositioning and reduced pressure injuries versus usual care, RR 0.28 (0.10–0.75), moderate certainty. A 116-person trial found more injuries prone than supine, RR 4.55 (2.31–8.98).
Context & considerations
Grade B for three reasons: mortality studies show association, not proof that prevention lowers mortality; repositioning-interval trials are very uncertain; and stronger mattress evidence concerns hospital surfaces, with home use an extrapolation. Daily checks of bony areas for nonblanching redness are standard nursing practice without a separate citation here. See long-term care coverage, sudden one-leg swelling, and prolonged immobility after major injury.
Research & references
Porter SB, Pla R, Chow JH, et al. (2022). Preoperative Pressure Ulcers, Mortality, and Complications in Older Hip Fracture Surgery Patients. JAAOS Global Research & Reviews, 6(11). https://doi.org/10.5435/JAAOSGlobal-D-22-00117; Ottaviani S, Rondanina E, Longo E, et al. (2026). Impact of pressure ulcers and frailty on long-term mortality: a prospective cohort study of hospitalized older adults. European Geriatric Medicine, 17(2), 665-672. https://doi.org/10.1007/s41999-025-01331-8; Shi C, Dumville JC, Cullum N (2018). Support surfaces for pressure ulcer prevention: A network meta-analysis. PLoS ONE, 13(2), e0192707. https://doi.org/10.1371/journal.pone.0192707; Latimer SL, Chaboyer WP, Probst S, et al. (2026). Repositioning for pressure injury prevention in adults. Cochrane Database of Systematic Reviews, 6, CD009958. https://doi.org/10.1002/14651858.CD009958.pub4