Pressure Ulcers and Risk Assessment in Severe Burns:

Pressure in the Operating Room: A Potential Contributor to Hospital-Acquired Pressure Injuries

Burn patients are at risk for hospital-acquired pressure injuries (HAPIs). An unexamined factor that may contribute to HAPI development is the effect of pressure from the operating table during surgery. The purpose of this study was to measure pressure on the buttocks and sacral area during burn surgery under general anesthesia (GA). Prospective study of consecutive adult burn patients admitted to an ABA-verified burn center who required surgery under GA between January 06, 2022 and December 08, 2022. We studied only cases that were supine, including those with both legs down (LD), one leg suspended (1LU), or both legs suspended (2LU). Interface pressures on the buttocks and sacral area were measured using a commercial sensor mat. Thousands of individual pressure measurements were integrated to show average and peak pressures over repetitive 10-minute intervals during the entire operation. Recordings were completed in 41 procedures among 28 patients (48.3 ± 16.9 years, % TBSA burn 19.2 ± 17.1, weight 80.2 ± 19.7 kg, BMI 26.7 ± 6.2). Both average pressure (Pave) and peak pressure (Ppeak) increased significantly with greater number of elevated legs (p < .001). During 2LU periods, Ppeak exceeded 100 mmHg for almost half the operative duration. Pave crept steadily upwards over time and had a positive relationship with weight, regardless of leg elevation. Prolonged moderate to high pressures are exerted on the sacral and buttock areas, especially with one or both legs suspended, during burn surgery. These novel observations suggest that pressure from the operating table could contribute to HAPI development.

Clinical Practice Guideline: Early Mobilization and Rehabilitation of Critically Ill Burn Patients

This Clinical Practice Guideline addresses early mobilization and rehabilitation (EMR) of critically ill adult burn patients in an intensive care unit (ICU) setting. We defined EMR as any systematic or protocolized intervention that could include muscle activation, active exercises in bed, active resistance exercises, active side-to-side turning, or mobilization to sitting at the bedside, standing, or walking, including mobilization using assistance with hoists or tilt tables, which was initiated within at least 14 days of injury, while the patient was still in an ICU setting. After developing relevant PICO (Population, Intervention, Comparator, Outcomes) questions, a comprehensive literature search was conducted with the help of a professional medical librarian. Available literature was reviewed and systematically evaluated. Recommendations were formulated through the consensus of a multidisciplinary committee, which included burn nurses, physicians, and rehabilitation therapists, based on the available scientific evidence. No recommendation could be formed on the use of EMR to reduce the duration of mechanical ventilation in the burn ICU, but we conditionally recommend the use of EMR to reduce ICU-acquired weakness in critically ill burn patients. No recommendation could be made regarding EMR's effects on the development of hospital-acquired pressure injuries or disruption or damage to the skin grafts and skin substitutes. We conditionally recommend the use of EMR to reduce delirium in critically ill burn patients in the ICU.

Using Pressure Mapping to Optimize Hospital-Acquired Pressure Injury Prevention Strategies in the Burn Intensive Care Unit

Although prior studies have demonstrated the utility of real-time pressure mapping devices in preventing pressure ulcers, there has been little investigation of their efficacy in burn intensive care unit (BICU) patients, who are at especially high risk for these hospital-acquired injuries. This study retrospectively reviewed clinical records of BICU patients to investigate the utility of pressure mapping data in determining the incidence, predictors, and associated costs of hospital-acquired pressure injuries (HAPIs). Of 122 patients, 57 (47%) were studied prior to implementation of pressure mapping and 65 (53%) were studied after implementation. The HAPI rate was 18% prior to implementation of pressure monitoring, which declined to 8% postimplementation (chi square: P = .10). HAPIs were less likely to be stage 3 or worse in the postimplementation cohort (P < .0001). On multivariable-adjusted regression accounting for known predictors of HAPIs in burn patients, having had at least 12 hours of sustained pressure loading in one area significantly increased odds of developing a pressure injury in that area (odds ratio 1.3, 95% CI 1.0-1.5, P = .04). Patients who developed HAPIs were significantly more likely to have had unsuccessful repositioning efforts in comparison to those who did not (P = .02). Finally, implementation of pressure mapping resulted in significant cost savings-$6750 (standard deviation: $1008) for HAPI-related care prior to implementation, vs $3800 (standard deviation: $923) after implementation, P = .008. In conclusion, the use of real-time pressure mapping decreased the morbidity and costs associated with HAPIs in BICU patients.

Validation of two case definitions to identify pressure ulcers using hospital administrative data

OBJECTIVE

Pressure ulcer development is a quality of care indicator, as pressure ulcers are potentially preventable. Yet pressure ulcer is a leading cause of morbidity, discomfort and additional healthcare costs for inpatients. Methods are lacking for accurate surveillance of pressure ulcer in hospitals to track occurrences and evaluate care improvement strategies. The main study aim was to validate hospital discharge abstract database (DAD) in recording pressure ulcers against nursing consult reports, and to calculate prevalence of pressure ulcers in Alberta, Canada in DAD. We hypothesised that a more inclusive case definition for pressure ulcers would enhance validity of cases identified in administrative data for research and quality improvement purposes.

SETTING

A cohort of patients with pressure ulcers were identified from enterostomal (ET) nursing consult documents at a large university hospital in 2011.

PARTICIPANTS

There were 1217 patients with pressure ulcers in ET nursing documentation that were linked to a corresponding record in DAD to validate DAD for correct and accurate identification of pressure ulcer occurrence, using two case definitions for pressure ulcer.

RESULTS

Using pressure ulcer definition 1 (7 codes), prevalence was 1.4%, and using definition 2 (29 codes), prevalence was 4.2% after adjusting for misclassifications. The results were lower than expected. Definition 1 sensitivity was 27.7% and specificity was 98.8%, while definition 2 sensitivity was 32.8% and specificity was 95.9%. Pressure ulcer in both DAD and ET consultation increased with age, number of comorbidities and length of stay.

CONCLUSION

DAD underestimate pressure ulcer prevalence. Since various codes are used to record pressure ulcers in DAD, the case definition with more codes captures more pressure ulcer cases, and may be useful for monitoring facility trends. However, low sensitivity suggests that this data source may not be accurate for determining overall prevalence, and should be cautiously compared with other prevalence studies.

Defining Unstageable Pressure Ulcers as Full-Thickness Wounds: Are These Wounds Being Misclassified?

PURPOSE

The purpose of this study was to describe the evolution of unstageable pressure ulcers (PUs) over time to determine if their healing trajectory is consistent with full- or partial-thickness wounds.

DESIGN

Retrospective review of electronic medical record and a clinical PU database.

SUBJECTS AND SETTINGS

Patients with hospital-acquired, unstageable PUs were evaluated. Subjects were cared for at a level 1 trauma/burn center and safety net hospital in the Pacific Northwest between November 2007 and March 2011.

METHODS

Electronic medical records and a clinical PU database for 194 unstageable PUs were examined. The PU database is managed by certified wound care nurses; it includes data on all verified hospital-acquired PUs since 2007. The unit of analysis for this study was the individual PU site.

RESULTS

Of the initial 194 unstageable PUs identified, 120 were excluded due to lack of data needed to address research questions. Out of the 74 unstageable PUs that remained in the study, approximately one-third (33.8%) were found to follow a healing trajectory consistent with partial-thickness wounds.

CONCLUSION

Findings indicate that while approximately two-thirds of unstageable PUs demonstrate healing trajectories consistent with full-thickness wounds, slightly more than a third follow a trajectory consistent with partial-thickness wounds. Additional research is needed to clarify the healing trajectories of unstageable PUs and to determine whether the current definition for unstageable PUs is adequate.

Micronutrients after burn injury: a review

Supplementation of micronutrients after burn injury is common practice in order to fight oxidative stress, support the immune system, and optimize wound healing. Assessing micronutrient status after burn injury is difficult because of hemodilution in the resuscitation phase, redistribution of nutrients from the serum to other organs, and decreases in carrier proteins such as albumin. Although there are many preclinical data, there are limited studies in burn patients. Promising research is being conducted on combinations of micronutrients, especially via the intravenous route.