Comparing Pressure Injury Incidence Based on Repositioning Intervals and Support Surfaces in Acute Care Settings: A Quasi-Experimental Pragmatic Study

Effectiveness of specialised support surface modes in preventing pressure injuries in intensive care: A systematic review and meta-analysis

BACKGROUND

Patients in intensive care units (ICU) are at an increased risk of pressure injuries. In ICUs, specialised support surfaces are an intervention often used to prevent pressure injuries. This systematic review and meta-analysis aimed to ascertain the effectiveness of different specialised support surface modes for preventing pressure injuries to adult ICU patients.

METHODS

Ovid MEDLINE, Ovid Embase, EBSCO CINAHL, PEDro, Cochrane Library, Clinicaltrials.gov and eligible paper references were searched for appropriate studies. Studies were included if they investigated both dynamic support surface modes low-air-loss (LAL) and alternating pressure (AP), involved adult ICU patients (≥18 years old), and investigated pressure injury incidence. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) and Mixed Methods Appraisal Tool (MMAT) checklists were used for reporting and quality assessment. Risk ratios (RRs) with 95 % Confidence Intervals (CIs) were used to summarise pressure injury incidence. The pooled RR was calculated with the random-effects model using the Mantel-Haenszel method. Further secondary analysis examined length of stay (LoS) and severity of illness.

RESULTS

The four included studies involved 3,308 patients. These studies were heterogeneous in design. When AP surface mode was compared with LAL surface mode, there was no significant difference in the occurrence of pressure injury (8.9 % versus 10.9 %, RR 0.64). Mattress mode also had no direct association with length of stay and severity of illness.

CONCLUSION

This systematic review and meta-analysis found no significant difference in the effectiveness of LAL and AP support surface modes in preventing pressure injuries in adult ICU patients.

IMPLICATIONS FOR CLINICAL PRACTICE

Clinicians should remember that mattresses are just one element within strategies to prevent pressure injuries in ICUs. The equivocal findings of this systematic review highlight the complexity of preventing pressure injuries and underscore the importance of holistic nursing care.

The effect of support surface on the prevention of pressure injury in acute care settings: A multi-center prospective observational study

PURPOSE

This study aimed to analyze if a multi-foam core mattress with a laminated cover can reduce the incidence of pressure injuries, compared to an alternating air mattress overlay among critically ill patients in acute settings.

DESIGN

Prospective observational study.

PARTICIPANTS

and setting: Patients with a Braden scale score ≤16 on intensive care unit admission at five general hospitals in Korea were included in this study between February 2022 and March 2022.

METHODS

One hundred and twenty patients in acute settings were enrolled and categorized into two groups: a multi-form core mattress with a laminated cover group (n = 60) and an alternating air mattress overlay group (n = 60). Data were collected for 7 days by wound care nurses.

RESULTS

Pressure injury developed at a significantly lower rate in the multi-form core mattress with a laminated cover group (n = 4/60, 6.7 %) than in the alternating air mattress overlay group (n = 25/60, 25.0 %) (P = 0.011). Using a multi-foam core mattress with a laminated cover demonstrated a protective effect against pressure injuries (odds ratio 0.123, 95 % confidence interval 0.024-0.620, P = 0.011).

CONCLUSIONS

A multi-foam core mattress with a laminated cover was significantly more effective than an alternating air mattress overlay in preventing pressure injury in critically ill patients.

Movement Patterns of Transient and Prolonged Positioning Events in Nursing Home Residents: Results from the TEAM-UP Trial

OBJECTIVE

To characterize transient and prolonged body position patterns in a large sample of nursing home (NH) residents and describe the variability in movement patterns based on time of occurrence.

METHODS

This study is a descriptive, exploratory analysis of up to 28 days of longitudinal accelerometer data for 1,100 NH residents from the TEAM-UP (Turn Everyone and Move for Ulcer Prevention) clinical trial. Investigators analyzed rates of transient events (TEs; less than 60 seconds) and prolonged events (PEs; 60 seconds or longer) and their interrelationships by nursing shift.

RESULTS

Residents' positions changed for at least 1 minute (PEs) nearly three times per hour. Shorter-duration movements (TEs) occurred almost eight times per hour. Residents' PE rates were highest in shift 2 (3 pm to 11 pm ), when the median duration and maximum lengths of PEs were lowest; the least active time of day was shift 3 (11 pm to 7 am ). Three-quarters of all PEs lasted less than 15 minutes. The rate of TEs within PEs decreased significantly as the duration of PEs increased.

CONCLUSIONS

The NH residents demonstrate complex patterns of movements of both short and prolonged duration while lying and sitting. Findings represent how NH residents naturally move in real-world conditions and provide a new set of metrics to study tissue offloading and its role in pressure injury prevention.

Assessment of Hyperspectral Imaging in Pressure Injury Healing

OBJECTIVE

To analyze the blood oxygen concentrations (StO 2 ) of different stages of pressure injury (PI) tissue using hyperspectral images to serve as a guideline for the treatment and care of PIs.

METHODS

This study used a prospective design. A total of 30 patients with sacral PIs were recruited from the rehabilitation ward of a teaching hospital. The authors used a hyperspectral detector to collect wound images and the Beer-Lambert law to estimate changes in tissue StO 2 in different stages of PI.

RESULTS

The tissue StO 2 of healthy skin and that of stage 1 PI skin were similar, whereas the tissue StO 2 of the wound in stage 2 PIs was significantly higher than that of healthy skin and scabbed tissue (medians, 82.5%, 74.4%, and 68.3%; P < .05). In stage 3 PIs, StO 2 was highest in subcutaneous tissue and adipose tissue (82.5%) and lowest in peripheral scabs (68.35%). The tissue StO 2 was highest in subcutaneous tissue in stage 4 PIs, and this tissue was red in the hyperspectral spectrum. The scab-covered area of unstageable PIs had the lowest StO 2 of all PI tissue types (median, 44.3%).

CONCLUSIONS

Hyperspectral imaging provides physiologic information on wound microcirculation, which can enable better evaluation of healing status. Assessing tissue StO 2 data can provide a clinical index of wound healing.