Abstract
BackgroundPressure ulcers are a global issue and substantial concern for healthcare systems. Various types of support surfaces that prevent pressure ulcer are available. Data about the effectiveness and cost of static air support surfaces and alternating air pressure mattresses is lacking. ObjectivesTo compare the effectiveness and cost of static air support surfaces versus alternating air pressure support surfaces in a nursing home population at high risk for pressure ulcers. DesignProspective, multicentre, randomised controlled clinical, non-inferiority trial. SettingTwenty-six nursing homes in Flanders, Belgium. ParticipantsA consecutive sample of 308 participants was selected based on the following eligibility criteria: high risk for pressure ulcer and/or with category 1 pressure ulcer, being bedbound and/or chair bound, aged > 65 years, and use of an alternating air pressure mattress. MethodsThe participants were allocated to the intervention group (n = 154) using static air support surfaces and the control group (n = 154) using alternating air pressure support surfaces. The main outcome measures were cumulative incidence and incidence density of the participants developing a new category II–IV pressure ulcer within a 14-day observation period, time to develop a new pressure ulcer, and purchase costs of the support surfaces. ResultsThe intention-to-treat analysis revealed a significantly lower incidence of category II–IV pressure ulcer in the intervention group (n = 8/154, 5.2%) than in the control group (n = 18/154, 11.7%) (p = 0.04). The median time to develop a pressure ulcer was significantly longer in the intervention group (10.5 days, interquartile range [IQR]: 1–14) than in the control group (5.4 days, [IQR]: 1–12; p = 0.05). The probability to remain pressure ulcer free differed significantly between the two study groups (log-rank X² = 4.051, df = 1, p = 0.04). The overall cost of the mattress was lower in the intervention group than in the control group. ConclusionsA static air mattress was significantly more effective than an alternating air pressure mattress in preventing pressure ulcer in a high-risk nursing home population. Considering multiple lifespans and purchase costs, static air mattresses were more cost-effective than alternating air pressure mattresses.
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