Low biochemical nutritional parameters in acutely ill hospitalized elderly patients with and without stage III to IV pressure ulcers

Aetiology, risk factors and treatment of typical and atypical pressure ulcers in patients with traumatic brain injury: A narrative review

Pressure ulcers are one of the leading complications in bedridden patients that result in multiple burdens on healthcare systems and patients (11 billion dollars/year). The prevalence of pressure ulcers in traumatic brain injury patients is 1.5-fold compared with the other bedridden patients. Moreover, critical traumatic brain injury patients who are admitted to the intensive care unit experience severe pressure ulcers and further complications. The motor/sensory disabilities and low supplementation and oxygenation to the pressured side were the main mechanisms of the typical pressure ulcers. Intellectual evaluation is the first essential step to prevent the development of pressure ulcers in high-risk patients. Till now, different scales, including Injury Scale Score and Braden Scale Score, have been provided to assess the pressure ulcer. Since low stages of pressure ulcers heal rapidly, traumatic brain injury patients require a periodical assessment to prevent further developments timely. Alongside different procedures provided to prevent and treat any pressure ulcer, traumatic brain injury patients required additional specific protections. For the first line, fast and efficient rehabilitation repairs motor/sensory disabilities and decreases the chance of pressure ulcer. Our review indicated that pressure ulcer in traumatic brain injury had several complex mechanisms that demand special care. Therefore, further studies are required to address these mechanisms and prevent their progression to typical and atypical pressure ulcers.

Demographic and clinical characteristics of patients with zinc deficiency: analysis of a nationwide Japanese medical claims database

Zinc deficiency, affecting more than 2 billion people globally, poses a significant public health burden due to its numerous unfavorable effects, such as impaired immune function, taste and smell disorders, pneumonia, growth retardation, visual impairment, and skin disorders. Despite its critical role, extensive large-scale studies investigating the correlation between patient characteristics and zinc deficiency still need to be completed. We conducted a retrospective, cross-sectional observational study using a nationwide Japanese claims database from January 2019 to December 2021. The study population included 13,100 patients with available serum zinc concentration data, excluding individuals under 20 and those assessed for zinc concentrations after being prescribed zinc-containing medication. Significant associations with zinc deficiency were noted among older adults, males, and inpatients. Multivariate analysis, adjusting for age and sex, indicated significant associations with comorbidities, including pneumonitis due to solids and liquids with an adjusted Odds Ratio (aOR) of 2.959; decubitus ulcer and pressure area (aOR 2.403), sarcopenia (aOR 2.217), COVID-19 (aOR 1.889), and chronic kidney disease (aOR 1.835). Significant association with medications, including spironolactone (aOR 2.523), systemic antibacterials (aOR 2.419), furosemide (aOR 2.138), antianemic preparations (aOR 2.027), and thyroid hormones (aOR 1.864) were also found. These results may aid clinicians in identifying patients at risk of zinc deficiency, potentially improving care outcomes.

Biomarkers for the early detection of pressure injury: A systematic review and meta-analysis

BACKGROUND

Pressure injury imposes a significant burden for patients and healthcare systems and the majority of pressure injuries are preventable. The early identification of pressure injury is critical for its prevention. As an objective measure, biomarkers have preliminarily shown the potential to identify individuals at risk for developing pressure injury before it is visually observed to occur. However, these results have not been synthesized.

OBJECTIVE

To assess and synthesise the predictive effect of different biomarkers in the early detection of pressure injury formation.

DESIGN

A systematic review and meta-analysis.

DATA SOURCES

PubMed, EMBASE, CINAHL Complete and the Cochrane Library were comprehensively searched for articles up to June 2021. No restrictions were applied to study design type, language, country, race or date of publication.

REVIEW METHODS

Two reviewers independently extracted data from all original eligible studies using a specified data extraction form, resolved disagreements through discussion and the involvement of an additional reviewer. Methodological quality of all included studies was independently appraised by two authors with the Joanna Briggs Institute (JBI) Critical Appraisal Checklist and the Newcastle-Ottawa Quality Assessment Scale (NOS). Heterogeneity of each study was estimated using the I² statistic, and the data was synthesized using StataSE15.

RESULTS

Eight observational studies involving 10595 participants were included. The overall pooled area under curve (AUC) and the 95% confidence intervals (CIs) of Serum albumin (Alb) was 0.66(0.62-0.70), and the Serum haemoglobin (Hb) was 0.67(0.60-0.74). The AUC and 95% CI of C-reactive protein (CRP) was 0.62(0.50-0.74), Braden score was 0.56 (0.429-0.691), Waterlow score was 0.729(0.654-0.803), Alb with Waterlow was 0.741(0.694-0.787), and the combination of Hb, CRP, Alb, Age and Gender was 0.79(0.682-0.898). Besides, the chemokine interferon-γ-induced protein of 10kd/CXCL10, cytokine interferon-α, tumor necrosis factor-alpha (TNF-α), granulocyte-macrophage colony-stimulating factor (GM-CSF), interleukin-15 (IL-15) and combination of creatine kinase (CK), myoglobin (Mb), heart-type fatty acid binding protein (H-FABP) and CRP may prove potential for detecting pressure injury.

CONCLUSION

The findings suggest the combination of Hb, CRP, Alb, Age and Gender is superior to other biomarkers. However, the predictive effect of biomarkers needs to be confirmed by more researches and patient-level data.

Immune Function Is Impaired With a Mini Nutritional Assessment Score Indicative of Malnutrition in Nursing Home Elders With Pressure Ulcers

BACKGROUND

Malnutrition is prevalent in elders with pressure ulcers and is associated with increased morbidity and mortality. This study compared nutritional status, assessed by the Mini Nutrition Assessment (MNA), to immune function in nursing home elders with pressure ulcers.

METHODS

Nutritional status was assessed in nursing home residents (>65 years) with a stage II or more severe pressure ulcer. Subjects were classified as well nourished, at risk of malnutrition, or malnourished according to MNA score. Blood was drawn to assess whole blood mitogen-induced lymphocyte proliferation and neutrophil respiratory burst. Delayed-type hypersensitivity to 3 antigens was measured. MNA status was compared with immune parameters using the Kruskall-Wallis test.

RESULTS

Of the 24 subjects (23 men, 1 woman) who completed the study protocol, only 4 (17%) were classified as well nourished, whereas 7 (29%) were at risk and 13 (54%) were malnourished according to MNA score. Whole blood lymphocyte proliferation was significantly lower in the malnourished vs at risk subjects with both pokeweed (median [25th, 75th percentile], 0.6 [0.3, 0.9] vs 1.8 [1.2, 2.1] disintegrations per minute [dpm]/cell, p < .05); and concanavalin A (1.7 [0.9, 2.0] vs 2.8 [2.6, 3.9] dpm/cell, p < .05) mitogens. Neutrophil respiratory burst normalized to a young control was significantly lower in malnourished subjects vs well-nourished subjects (0.8 [0.5, 0.9] vs 1.4 [1.0, 1.7], p < .05). Total induration to 3 skin-test antigens was 13.4 +/- 4.6, 3.5 +/- 2.6, and 3.8 +/- 1.8 (mean +/- SEM) for well-nourished, at risk, and malnourished, respectively (p = .059).

CONCLUSIONS

Immune function is impaired with an MNA score indicative of malnutrition in nursing home elders with pressure ulcers.

A nutritional formula enriched with arginine, zinc, and antioxidants for the healing of pressure ulcers: a randomized trial

BACKGROUND

Trials on specific nutritional supplements for the treatment of pressure ulcers (PUs) have been small, inconsistent in their formulations, or unsuccessful in controlling for total supplement calorie or protein content.

OBJECTIVE

To evaluate whether supplementation with arginine, zinc, and antioxidants within a high-calorie, high-protein formula improves PU healing.

DESIGN

Multicenter, randomized, controlled, blinded trial. (ClinicalTrials.gov: NCT01107197).

SETTING

Long-term care and home care services.

PATIENTS

200 adult malnourished patients with stage II, III, and IV PUs.

INTERVENTIONS

An energy-dense, protein-rich oral formula enriched with arginine, zinc, and antioxidants (400 mL/d) or an equal volume of an isocaloric, isonitrogenous formula for 8 weeks.

MEASUREMENTS

The primary end point was the percentage of change in PU area at 8 weeks. Secondary end points included complete healing, reduction in the PU area of 40% or greater, incidence of wound infections, the total number of dressings at 8 weeks, and the percentage of change in area at 4 weeks.

RESULTS

Supplementation with the enriched formula (n = 101) resulted in a greater reduction in PU area (mean reduction, 60.9% [95% CI, 54.3% to 67.5%]) than with the control formula (n = 99) (45.2% [CI, 38.4% to 52.0%]) (adjusted mean difference, 18.7% [CI, 5.7% to 31.8%]; P = 0.017). A more frequent reduction in area of 40% or greater at 8 weeks was also seen (odds ratio, 1.98 [CI, 1.12 to 3.48]; P = 0.018). No difference was found in terms of the other secondary end points.

LIMITATION

Participation was restricted to patients who were malnourished, were able to drink oral supplements, and were living in long-term care institutions or receiving home care services.

CONCLUSION

Among malnourished patients with PU, 8 weeks of supplementation with an oral nutritional formula enriched with arginine, zinc, and antioxidants improved PU healing.

PRIMARY FUNDING SOURCE

Azienda Ospedaliera Universitaria Maggiore della Carità.

Micronutrient Needs of the Elderly

Older adults are becoming a significant percentage of the world's population. A multitude of factors, from the normal aging process to the progression of chronic disease, influence the nutrition needs of this very diverse group of people. Appropriate micronutrient intake is of particular importance but is often suboptimal. Here we review the available data regarding micronutrient needs and the consequences of deficiencies in the ever growing aged population.

Nutrition-related status and granulation tissue colour of pressure ulcers evaluated by digital image analysis in older patients

OBJECTIVE

Granulation tissue colour may be an indicator for nutritional assessment in pressure ulcer (PU) care. This study evaluated the relationship between nutritional status, anaemia and diabetes, and granulation tissue colour of PUs by colour analysis of digital photographs in the clinical setting.

METHOD

The cross-sectional study included 42 older patients with 51 full-thickness PUs from 10 institutions. Patient demographics, wound status, nutritional status and dietary intakes were obtained from medical charts. From a wound image, the granulation red index was processed by computer software and the proportion of pixels exceeding the threshold intensity of 80 for the granulation tissue surface (%GRI80) was calculated.

RESULTS

Haemoglobin levels were positively associated with %GRI80 levels (p=0.007) in the crude model, but not in the adjusted model (p=0.260). The interaction term between diabetes and protein intake was significantly associated with %GRI80 levels in the adjusted models (p=0.010). At protein intakes of 0.95 g/kg or higher, diabetic wounds exhibited lower %GRI80 levels than non-diabetic wounds (p=0.002). At protein intakes of less than 0.95 g/kg, %GRI80 levels did not differ between diabetic and non-diabetic patients (p=0.247). Protein intakes of 0.95 g/kg or higher were associated with higher %GRI80 levels in non-diabetic patients (p=0.015), but not in diabetic patients (p=0.127).

CONCLUSION

Granulation tissue colour, evaluated by the objective and quantitative analysis of digital photography, is related to haemoglobin level, diabetes and dietary intakes in clinical settings.

Pressure ulcer in patients with severe traumatic brain injury: significant factors and association with neurological outcome

AIMS AND OBJECTIVES

To assess the factors associated with development of pressure ulcer in patients with severe traumatic brain injury (TBI) and study its prognostic significance with respect to neurological outcome at three months.

BACKGROUND

Patients with severe TBI are prone to develop pressure ulcer due to various factors, which have never been studied in detail.

DESIGN

Prospective longitudinal study.

METHODS

Eighty-nine patients of TBI in age group 20-60 years admitted with Glasgow Coma Scale (GCS) 4-8 without serious systemic disorder were enrolled for the study. Patient characteristics, haemoglobin, serum albumin levels at admission and their weekly changes till 21 days were noted along with daily assessment for presence of pressure ulcer. Mortality was assessed at 21 days and neurological outcome at three months through telephonic interview.

RESULTS

Of 89 patients studied, pressure ulcer was observed in 6 (7%) and 14 (16%) at the end of two and three weeks, respectively. Pressure ulcer in univariate analysis was significantly associated with poorer GCS (p = 0·05), delayed enteral feeding (p = 0·005) and fall in haemoglobin at two weeks (p = 0·005). Only the latter two were found significant in multivariate analysis. Age, gender, surgical intervention, tracheostomy, prolonged fever and change in albumin had no significant association with pressure ulcer development. Presence of pressure ulcer was significantly associated with mortality at 21 days (p = 0·006) and unfavourable neurological outcome at three months (p = 0·01).

CONCLUSIONS

The significant factors influencing pressure ulcer development in patients with TBI were delayed enteral feeding and fall in haemoglobin. Pressure ulcer had significant association with mortality at 21 days and recovery status at three months.

RELEVANCE TO CLINICAL PRACTICE

Early nutritional supplementation and monitoring of haemoglobin should be an important part of nursing care interventions for patients at increased risk of developing pressure ulcer.

Estimation of protein loss from wound fluid in older patients with severe pressure ulcers

OBJECTIVE

Protein loss from wound fluid is usually recognized as one of the factors contributing to the deterioration of the nutritional status in older patients with severe pressure ulcers. We quantified the protein loss owing to pressure ulcers and investigated associations with wound-related factors and nutritional status.

METHODS

This cross-sectional study included 25 patients (>or=60 y) from 10 institutions, with full-thickness pressure ulcers. Wound fluid was collected once after accumulating beneath a film dressing. The amount of protein loss per day was estimated by the volume of wound fluid per hour and the total protein concentration in the wound fluid. Wound evaluations and nutritional assessments were performed. Correlations between variables were obtained using Spearman's rank correlation.

RESULTS

The median age of the patients was 79 y (range 61-100), and median body mass index was 19.6 kg/m(2) (12.2-24.9). The median amount of protein loss was 0.2g/d (0.04-2.1), which corresponded to 0.01 g x kg(-1) x d(-1) (<0.01-0.04) and 0.6% (0.1-13.8) of protein intake. Four wounds characterized as infected or surgically debrided lost 1.5-2.1g of protein per day, which was substantially higher than other wounds lost. Protein loss was correlated with wound severity including area, depth, the wound severity score, and infectious markers (all Ps<0.05), but not with body mass index or arm muscle circumference (P>0.05).

CONCLUSION

The amount of protein loss could be small and thus may not be related directly to nutritional status, although it increased as the wound became more severe.

A new predictive indicator for development of pressure ulcers in bedridden patients based on common laboratory tests results

Background:

Various scales have been devised to predict development of pressure ulcers on the basis of clinical and laboratory data, such as the Braden Scale (Braden score), which is used to monitor activity and skin conditions of bedridden patients. However, none of these scales facilitates clinically reliable prediction.

Aims:

To develop a clinical laboratory data-based predictive equation for the development of pressure ulcers.

Methods:

Subjects were 149 hospitalised patients with respiratory disorders who were monitored for the development of pressure ulcers over a 3-month period. The proportional hazards model (Cox regression) was used to analyse the results of 12 basic laboratory tests on the day of hospitalisation in comparison with Braden score.

Results:

Pressure ulcers developed in 38 patients within the study period. A Cox regression model consisting solely of Braden scale items showed that none of these items contributed to significantly predicting pressure ulcers. Rather, a combination of haemoglobin (Hb), C-reactive protein (CRP), albumin (Alb), age, and gender produced the best model for prediction. Using the set of explanatory variables, we created a new indicator based on a multiple logistic regression equation. The new indicator showed high sensitivity (0.73) and specificity (0.70), and its diagnostic power was higher than that of Alb, Hb, CRP, or the Braden score alone.

Conclusions:

The new indicator may become a more useful clinical tool for predicting presser ulcers than Braden score. The new indicator warrants verification studies to facilitate its clinical implementation in the future.

Zinc in wound healing: theoretical, experimental, and clinical aspects

Zinc is an essential trace element in the human body and its importance in health and disease is appreciated. It serves as a cofactor in numerous transcription factors and enzyme systems including zinc-dependent matrix metalloproteinases that augment autodebridement and keratinocyte migration during wound repair. Zinc confers resistance to epithelial apoptosis through cytoprotection against reactive oxygen species and bacterial toxins possibly through antioxidant activity of the cysteine-rich metallothioneins. Zinc deficiency of hereditary or dietary cause can lead to pathological changes and delayed wound healing. Oral zinc supplementation may be beneficial in treating zinc-deficient leg ulcer patients, but its therapeutic place in surgical patients needs further clarification. Topical administration of zinc appears to be superior to oral therapy due to its action in reducing superinfections and necrotic material via enhanced local defense systems and collagenolytic activity, and the sustained release of zinc ions that stimulates epithelialization of wounds in normozincemic individuals. Zinc oxide in paste bandages (Unna boot) protects and soothes inflamed peri-ulcer skin. Zinc is transported through the skin from these formulations, although the systemic effects seem insignificant. We present here the first comprehensive account of zinc in wound management in relation to current concepts of wound bed preparation and the wound-healing cascade. This review article suggests that topical zinc therapy is underappreciated even though clinical evidence emphasizes its importance in autodebridement, anti-infective action, and promotion of epithelialization.

Resting Energy Expenditure and Body Composition in Bedridden Institutionalized Elderly Women With Advanced-Stage Pressure Sores

BACKGROUND

Our study investigated nutritional status, body composition, and resting energy expenditure (REE) in elderly patients with advanced-stage pressure sores (PS), in addition to researching any hypermetabolic condition and its relationship with PS size.

METHODS

The study involved 52 institutionalized bedridden elderly women (aged 83.7 +/- 6.3 years), divided into two groups: 23 with advanced-stage (stage 3 and 4) PS and 29 without PS. Albumin, prealbumin, and retinol-binding protein were measured in all patients, and fat-free mass (FFM) and fat mass (FM) were obtained by dual-energy x-ray absorptiometry (DEXA). REE was measured by indirect calorimetry and predicted with the Harris-Benedict formula. PS area and volume were also measured.

RESULTS

The elderly women with and without PS were comparable in age, FFM, and FM. Mean albumin, prealbumin, and retinol-binding protein values were lower in cases with PS. Unadjusted mean REE was significantly higher in patients with PS (1212.3 +/- 236.7 vs 1085.5 +/- 161.3 kcal/d; p <.05), even after adjusting for FFM or expressed per kilogram of body weight (25.8 +/- 6.7 vs 21.1 +/- 4.0 kcal/d/kg; p <.01). Hypermetabolism, i.e., a measured REE > 110% of the predicted REE, was seen in 74% of patients with PS and 38% of controls. The difference between measured and predicted REE (DeltaREE) correlated with PS volume (r = 0.58; p <.01), but not with area.

CONCLUSION

Advanced-stage PS in elderly women are associated with a hypermetabolic state that is influenced by the volume of the PS.

Mini nutritional assessment and screening scores are associated with nutritional indicators in elderly people with pressure ulcers

OBJECTIVE

To determine the association between the Mini Nutritional Assessment (MNA) or MNA Screening Form and standard indicators of nutritional status in male elders with pressure ulcers.

DESIGN

Cross-sectional study. MNA and MNA Screening Form scores were related to nutritional indicators using the Pearson correlation.

SUBJECTS/SETTING

Residents (79+/-1 years, N=23 men) of Veterans Affairs medical center nursing home care units with stage I to IV pressure ulcers were enrolled.

MAIN OUTCOME MEASURES

Correlation coefficients were obtained from correlations between the MNA or MNA Screening Form scores and biochemical and anthropometric indices of nutritional status or measures of body composition normalized for height by dividing by height in meters(2).

RESULTS

Hemoglobin (106+/-4 g/L; r=0.43, P=.0409, mean, standard error of the mean, Pearson's r, P value), hematocrit (0.32+/-0.01; r=0.44, P=.0358), body mass index (23.1+/-1.0; r=0.66, P=.0006), calf circumference (30.4+/-1.1 cm; r=0.46, P=.0286), fat-free mass index (18.3+/-0; r=0.60, P=.0063), body cell mass index (8.3+/-0.5; r=0.64, P=.0033), and fat mass index (3.7+/-0.4; r=0.50, P=.0275) positively correlated with MNA score. Serum albumin (31+/-1 g/L) and prealbumin (180+/-17 mg/L) did not correlate with MNA, but prealbumin inversely correlated with erythrocyte sedimentation rate (r=-0.52, P=.0134), a marker of inflammation. The inverse correlation between albumin and erythrocyte sedimentation rate approached statistical significance (r=-0.42, P=.0542). The MNA Screening Form showed similar correlations or lack of correlations observed with the MNA with the exception of hemoglobin and hematocrit.

CONCLUSIONS

The MNA and MNA Screening Form provide advantages over using visceral proteins in screening and assessing nutritional status of elderly people with pressure ulcers.

No correlation between mini-nutritional assessment (short form) scale and clinical outcomes in 73 elderly patients admitted for hip fracture

BACKGROUND AND AIMS

Malnutrition in general and protein deficiency in particular, both upon admission and during the recovery period, may adversely influence the clinical outcome after hip fracture. This study investigates the relationship between nutritional status measured by the Mini-Nutritional Assessment short form (MNA-SF) and biological markers in elderly hip-fractured patients.

METHODS

A prospective study in a university hospital. The MNA-SF nutritional scale and laboratory values (serum albumin, cholesterol, total lymphocyte count) were assessed within three days after hip fracture surgery.

RESULTS

Seventy-three patients were included: 61 (84%) were women and 12 men. Mean age was 81.5+/-7.1 years. Inhospital mortality was 10%. The mean MNA-SF score was 11+/-0.5 (range 3-14); according to these values, 39 patients (53%) were at risk of malnutrition. MNA-SF scores were not significantly correlated to patients' laboratory values. Fourteen episodes of nosocomial infection were diagnosed in 11 patients, and 6 patients developed pressure ulcers during hospitalization.

CONCLUSIONS

MNA-SF test scale values reflect a clinical process in post-operative hip-fractured patients which is different from serum albumin, cholesterol or lymphocyte count.

The effectiveness of oral nutritional supplementation in the healing of pressure ulcers

OBJECTIVE

To investigate the effectiveness of an oral nutritional supplement that is rich in protein and enriched with arginine, vitamin C and zinc on the healing of pressure ulcers.

METHOD

Thirty-nine patients with grade III or IV pressure ulcers were enrolled into this open intervention study. Subjects received an oral nutritional supplement daily for three weeks. Wound area and the wound condition of the ulcers were assessed weekly.

RESULTS

After three weeks of supplementation, median wound area reduced significantly (p < 0.001) from 23.6 cm2 (1.6-176.6 cm2) to 19.2 cm2 (1.2-132.7 cm2), a reduction of 29%. Median healing of wound area was 0.34 cm2 per day, taking approximately two days to heal 1 cm2. Within three weeks the amount of exudate in infected ulcers (p = 0.012) and the incidence of necrotic tissue (p = 0.001) reduced significantly.

CONCLUSION

Nutritional intervention in the form of a specific oral nutritional supplement resulted in a significant reduction in wound area and an improvement in wound condition in patients with grade III and IV pressure ulcers within three weeks.

Nutritional assessment in the hospitalized patient

PURPOSE OF REVIEW

Malnutrition is highly prevalent in hospitalized patients. Despite this, it is not routinely assessed in most hospitals worldwide. One of the reasons that might explain this fact is that there is no gold-standard nutritional assessment tool, and much has been written advocating this or that technique. The main topic of this review is discussion of the advantages and disadvantages of each of the available tools.

RECENT FINDINGS

Several studies have recently reinforced the relationship between poor nutritional status and higher incidences of complications, mortality, length of hospital stay and costs. Therefore, it is of the utmost importance to be able to diagnose malnutrition early.

SUMMARY

The evaluation of nutritional status is a broad topic that encompasses several clinical variables. In order to be ideal, the method should be able to predict patient outcome, should be able to be performed by most care-givers, should be inexpensive, and should not be time-consuming. Unfortunately, most nutritional assessment instruments were published with insufficient details regarding their intended use and method of derivation, and with an inadequate assessment of their effectiveness. Therefore, health professionals should be critical when defining which instrument should be adopted by an institution, and several factors should be taken into consideration.