A randomised controlled phase II trial to examine the feasibility of using hyper-oxygenated fatty acids (HOFA) to prevent facial pressure injuries from medical devices among adults admitted to intensive care-A research protocol.

One in three patients admitted to intensive care will sustain a pressure injury (PI) from a medical device. These injuries are painful and when on the face, head or neck they can result in permanent disfigurement. Preliminary evidence of the efficacy of hyper-oxygenated fatty acids (HOFAs) to prevent facial pressure injuries from medical devices is promising; however, the feasibility of incorporating HOFAs into current standard care to prevent PI from a medical device of the face, head and neck has not been extensively explored. It is intended that the findings from this phase II feasibility study will inform the design of a larger phase III trial, by addressing two primary aims: (1) to assess the feasibility of incorporating HOFAs into standard care to prevent device-related pressure ulcers of the skin associated with the face, head and neck assess the feasibility and (2) efficacy preliminary effectiveness of HOFA. This feasibility study is an investigator-initiated mixed method study incorporating a multi-centre randomised controlled trial of using HOFAs as an adjunct to standard pressure injury prevention and care, compared with standard care alone to prevent facial, head or neck from medical devices among adults admitted to intensive care. The primary outcome of interest is the incidence of facial, head or neck pressure injuries during the first 14 days in intensive care. Secondary outcomes include PI staging, medical device exposure and intensive care and hospital outcomes. The primary analysis will be undertaken using Cox's Proportional Hazards model, and due to the exploratory nature of this phase II trial, efficacy will be based on a one-sided p-value for superiority set at 0.10. Type I and Type II error rates are set at 20%; therefore, a total sample size of 196 study participants is planned. To explore the feasibility of incorporating HOFA into usual care and to design a larger phase III trial, we will aim to interview between 10 and 20 nurses across participating intensive care unit sites. Pressure injuries of the face, head or neck from medical devices, among adults admitted to intensive care, are considered preventable. This phase II study will investigate the feasibility and efficacy of HOFAs as an adjunct to standard care. Importantly, we aim to inform the development of a larger phase III trial.