Risk factors and prevention among patients with hospital-acquired and pre-existing pressure ulcers in an acute care hospital

Aims and objectives.  This study aimed to describe and identify risk factors associated with hospital‐acquired pressure ulcers among adults in an acute care hospital compared with patients with pre‐existing pressure ulcers present on admission. A further aim was to identify the preventive measures performed with both groups respectively. Background.  Pressure ulcers occur most often in older and immobile persons with severe acute illness and neurological deficits. However, few studies have addressed risk factors that are associated with hospital‐acquired pressure ulcers compared with patients with pre‐existing pressure ulcers. Design.  A point prevalence study with a cross‐sectional survey design was conducted at a Swedish university hospital. Method.  Data on 535 patients were recorded using a modified version of the protocol developed and tested by the European Pressure Ulcer Advisory Panel, including the Braden scale for risk assessment. Results.  The prevalence of pressure ulcers was 27% (95% confidence interval, 23–31%). Higher age and a total Braden score below 17 were significantly associated with the presence of pressure ulcers. Among individual risk factors higher age, limited activity level and friction and shear while seated or lying down were associated with hospital‐acquired pressure ulcers, whereas only higher age and friction and shear were associated with the presence of pressure ulcers in the overall sample. There was an overall sparse use of preventive measures to relieve pressure. Conclusion.  The findings of the present study revealed that pressure ulcers and the insufficient use of preventive measure to relieve pressure is still a problem in acute care settings. A continued focus must be placed on staff training in identifying patients at risk for pressure ulcers development. Relevance to clinical practice.  Increasing the ability to identify patients who are at risk for pressure ulcer development can assist in preventing unnecessary complications and suffering as well as reduce costs.     

Predicting pressure ulcers: cases missed using a new clinical prediction rule

AIM: The aim of this paper is to report a study describing patients with pressure ulcers that were incorrectly classified as 'not at risk' by the prediction rule and comparing them with patients who were correctly classified as 'not at risk'. BACKGROUND: Patients admitted to hospital are at risk of developing pressure ulcers. Although the majority of pressure ulcers can be predicted using a recently developed prediction rule, up to 30% of patients with pressure ulcers may still be misclassified. METHODS: Between January 1999 and June 2000 a prospective cohort study was conducted in two large hospitals in the Netherlands. Patients admitted to neurology, internal, surgical, and elder care wards for more than 5 days were included (n = 1229), and were examined weekly. Information on potential prognostic determinants for pressure ulcers mentioned in the literature was recorded. Outcome was defined as occurrence of a pressure ulcer grade 2 or worse during hospital admission. RESULTS: Patients who developed pressure ulcers experienced more problems with 'friction and shear' and underwent surgery more often and longer. Also, they were more often admitted because of malignant conditions. CONCLUSION: We found no specific characteristics that clearly distinguished patients with pressure ulcers that were incorrectly classified as 'not at risk' by the prediction rule from patients who were correctly classified as 'not at risk'. It appears difficult to improve further on the prediction of pressure ulcers using available clinical information.     

Collecting pressure ulcer prevention and management outcomes: 1

This article, the first of two parts, presents the argument that a combination of efficacy and effectiveness is required to assess fully the impact of interventions such as pressure-redistributing beds and mattresses. The methodology adopted within a multinational, multicentre, prospective, non-randomized cohort study, designed to record the occurrence and characteristics of patients vulnerable to, or with, established pressure ulcers, is described. General demographic data and the characteristics of the pressure ulcers experienced by the 2507 UK subjects recruited to the study across four UK hospitals between July 1996 and May 1998 are presented, with pressure ulcers affecting 218 subjects of whom 100 presented with ulcers on admission to hospital. Fourteen subjects developed severe ulcers, while a further 24 were admitted with full-thickness pressure ulcers. The second part of this article will report further details of the characteristics of the UK sample. Future articles will consider the subjects examined in greater detail and will also discuss the combination of this dataset with similar data collected in the USA.     

Do pressure ulcers influence length of hospital stay in surgical cardiothoracic patients? A prospective evaluation

Aim and objective. The aim and objective of this study was to determine whether the occurrence of pressure ulcers following cardiothoracic surgery increases the length of hospitalisation. Background. Literature suggests that a pressure ulcer extends the length of hospital stay. The impact of pressure ulcers on length of hospital stay after cardiothoracic surgery is yet undetermined. Design. Prospective follow‐up study. Methods. Two hundred and four patients admitted for elective cardiothoracic surgery and with an intensive care unit stay of >48 hours were included in a prospective cohort study. The course of the skin condition in relation to pressure ulcers was monitored during their stay in a teaching hospital. Length of hospital stay was compared between the group with and without pressure ulcers. Results. Hospital stay for cardiothoracic patients with and without pressure ulcers did not differ significantly (p = 0·23). Patients that developed pressure ulcers had a median hospital stay of 13 days (interquartile range: 9–19) vs. 12 days (interquartile range: 7–15) for patients without pressure ulcers. However, we observed that length of stay in the intensive care unit was significantly (p = 0·005) longer for patients with pressure ulcers. This was not associated with the occurrence of complications. However, the occurrence of pressure ulcers was significantly correlated with length of intensive care support in postoperative care. Conclusion. Non‐complicated pressure ulcers in postsurgery patients do not significantly increase the length of total hospital stay. Relevance to clinical practice. Health professionals need to recognise that patients who have undergone major surgery (such as cardiothoracic surgery) are prone to develop pressure ulcers. Despite the fact that pressure ulcers do not necessarily extend hospital stay, monitoring the skin condition remains of crucial importance for prevention and early detection as well as treatment of pressure ulcers and to minimise patient discomfort. Moreover, as pressure ulcers often originate in the operating room, prevention in the operating room should receive more attention.     

Healing times of pedal ulcers in diabetic immunosuppressed patients after transplantation.

OBJECTIVE: To compare the healing time of neuropathic plantar ulcers treated by total-contact casting (TCC) in diabetic, immunosuppressed patients after organ transplantation with the healing time of plantar ulcers in control nonimmunosuppressed patients. DESIGN: A case-control design with the control group matched for age, race, sex, body dimensions (height, weight, and body mass index), presence of sensory neuropathy, foot deformity presence and location, and pedal ulcer area and depth. SETTING: An outpatient physical therapy clinic in a regional tertiary-care hospital and academic medical center. PARTICIPANTS: Nine patients with chronic diabetes mellitus and a previous organ transplantation who were currently receiving lifelong immunosuppressive drug therapy were treated for a neuropathic plantar ulcer by means of TCC. Fourteen group-matched control subjects with diabetes mellitus and a plantar ulcer but who had never had an organ transplantation and were not taking immunosuppressive agents were also studied. INTERVENTIONS: TCC with partial weight-bearing using an assistive device until ulcers healed. MAIN OUTCOME MEASURE: Healing time was defined as the number of days in the total-contact cast until the skin completely closed. RESULTS: All diabetic foot ulcers healed with casting. Immunosuppressed/transplanted patients healed in a mean time of 111 +/- 25 days; ulcers of control subjects healed in 47 +/- 18 days (p < .05). All patients returned to ambulation using prescribed therapeutic footwear. None of the patients required a lower extremity amputation throughout the follow-up period. CONCLUSIONS: TCC is a highly effective and rapid method of healing neuropathic pedal ulcers in diabetic immunosuppressed/transplantation patients, although it may take several weeks longer than it would for patients who were not immunocompromised.     

Nontraumatic spinal cord injury rehabilitation: pressure ulcer patterns, prediction, and impact

OBJECTIVE: To investigate the characteristics, predictors, and consequences of pressure ulcers in patients with nontraumatic spinal cord injury (SCI). DESIGN: Retrospective, 3-year, case series. SETTING: Tertiary medical unit specializing in SCI rehabilitation. PARTICIPANTS: Consecutive sample of 134 adult inpatient referrals with nontraumatic SCI. Patients requiring initial rehabilitation or readmission were included. INTERVENTION: Chart review. MAIN OUTCOME MEASURES: Primary outcome measures were presence of pressure ulcers on admission to rehabilitation, incidence of new pressure ulcers developing during hospitalization, and any complications attributable to pressure ulcers during inpatient rehabilitation. Secondary objectives were to examine the predictability of risk factors for pressure ulcers, to assess the usefulness of a model previously developed for predicting pressure ulcers in patients with chronic SCI, and to estimate the effect of pressure ulcers on rehabilitation of nontraumatic SCI. RESULTS: Prevalence of pressure ulcers among admissions was 31.3% (n=42). Only 2.2% (n=3) of patients developed a new pressure ulcer after admission. The length of stay (LOS) of patients admitted with a pressure ulcer was significantly longer than that of those without a pressure ulcer (geometric mean, 62.3 d for pressure ulcer vs 28.2 d for no pressure ulcer, P=.0001). Many previously identified risk factors for pressure ulcers in SCI patients did not apply to our nontraumatic SCI patients. It is estimated that the inpatient LOS for those patients with a significant pressure ulcer was increased by 42 days. CONCLUSIONS: Pressure ulcers are a common complication for people with nontraumatic SCI who are admitted for rehabilitation, and they have a significant impact on LOS.     

Relation between pressure, friction and pressure ulcer categories: a secondary data analysis of hospital patients using CHAID methods

Background

According to the latest pressure ulcer definition provided by the EPUAP and NPUAP pressure and shear are named as factors causing pressure ulcers. Empirical evidence suggests that pressure forces in combination with shear seem to be primarily responsible for deeper tissue injuries leading to category III or IV pressure ulcers. Superficial frictional forces seem to cause skin lesion resembling category II pressure ulcers.

Objectives

The objective of this study was to explore the empirical relationships between friction forces and category II pressure ulcers and between pressure forces and categories III and IV pressure ulcers.

Design

A secondary analysis of data from six German annual hospital pressure point prevalence studies.

Settings

161 Hospitals of all specialties and categories throughout Germany.

Participants

28,299 Adult hospital patients. The average age was 65.4 (SD 17.0) years. Female participation was 55.0%.

Methods

For the classification of the sample regarding pressure ulcers as a dependent variable and the Braden scale items as predictor variables, Chi-square Automatic Interaction Detection (CHAID) for modelling classification trees, controlled for age, has been used. CHAID analysis was performed for category II pressure ulcers and categories III/IV pressure ulcers separately.

Results

7.5% (95% CI 7.2–7.8) of the hospital patients had “Friction & Shear” problems according to the respective Braden sale item. 5.4% (95% CI 5.1–5.6) were “Completely immobile” according to the Braden scale item “Mobility”. The category “Problem” of the item “Friction & Shear” was the strongest predictor for category II pressure ulcers. Categories III/IV prevalence was 1.9%. Compared to all other Braden scale items there was the strongest association between being completely immobile and deeper categories III/IV pressure ulcers.

Conclusions

Based on a large sample of patients from multiple centres throughout Germany results indicate, that there is a strong relationship between friction forces and superficial skin lesions and between pressure forces and deeper categories III and IV PUs. This indicates that there might be different aetiologies causing different wounds. Given, that both superficial and deep ulcers have different aetiologies the validity of the current PU definition and classification is questionable, because ulcers due to maceration and excoriation are excluded from this classification system.     

Use of Pressure Offloading Devices in Diabetic Foot Ulcers: Do we practice what we preach?

OBJECTIVE—Pressure mitigation is crucial for the healing of plantar diabetic foot ulcers. We therefore discuss characteristics and considerations associated with the use of offloading devices.RESEARCH DESIGN AND METHODS—A diabetic foot ulcer management survey was sent to foot clinics in all 50 states and the District of Columbia in 2005. A total of 901 geographically diverse centers responded. The survey recorded information regarding usage frequency and characteristics of assessment and treatment of diabetic foot ulcers in each center.RESULTS—Of the 895 respondents who treat diabetic foot ulcers, shoe modifications (41.2%, P < 0.03) were the most common form of pressure mitigation, whereas total contact casts were used by only 1.7% of the centers.CONCLUSIONS—This study reports the usage and characteristics of offloading devices in the care of diabetic foot ulcers in a broadly distributed geographic sample. Less than 2% of specialists use what has been termed the “gold standard” (total contact cast) for treating the majority of diabetic foot ulcers.In the treatment of diabetic foot ulcers, pressure modulation, commonly referred to as “offloading,” is most successful when pressure is mitigated at an area of high vertical or shear stress (1). Common methods to offload the foot include bed rest, wheel chair, crutch-assisted gait, total contact casts, felted foam, half shoes, therapeutic shoes, and removable cast walkers (2). Although it is well known that pressure mitigation through offloading devices is crucial for the healing of plantar diabetic foot ulcers, there are, to the best of our knowledge, no reports in the literature that describe the characteristics and considerations associated with the use of pressure mitigation devices in a broad geographically diverse sample of specialists. Therefore, the purpose of this study was to describe the characteristics and considerations associated with the use of offloading devices in foot clinics in the U.S.     

压疮小组在临床压疮管理中的运行及效果

目的探讨压疮小组在临床压疮管理中的运行及效果。方法以压疮小组成立前2011年的压疮高危和院外带入压疮患者共145例为A组,采用传统防治压疮的方法;以压疮小组成立后2012年的压疮高危和院外带人压疮患者共199例为B组和2013年的压疮高危和院外带入压疮患者共380例为c组,由压疮小组制定压疮预防与治疗方案并监督实施;各护理单元推荐1名临床护士作为科室压疮督导员,共30人,成立压疮小组后进行统一培训与管理。比较压疮小组成立前后患者住院期间难免压疮发生率、院外带入压疮治愈率及压疮督导员的压疮相关知识水平。结果A、B、C组难免压疮发生率分别为76．20％、17．02％、14．61％,带人压疮治愈率分别为54．84％、86．84％、87．97％,B、C组与A组比较,差异均有统计学意义（P〈0．01）。护士压疮相关知识水平明显提高（P〈0．001）。结论成立压疮小组使临床压疮管理更具科学性和客观性,能有效降低压疮发生,提高护理质量,保障患者安全。     

Clinical Use of Interface Pressure to Predict Pressure Ulcer Development: A Systematic Review

ABSTRACT

Pressure ulcers are a large problem in subjects who use a wheelchair for their mobility. These ulcers originate beneath the bony prominences of the pelvis and progress outward as a consequence of prolonged pressure. Interface pressure is used clinically to predict and prevent pressure ulcers. However, the relation between interface pressure and the development of pressure ulcers is not clear. A systematic review was performed to address the research question of whether interface pressure can be used to predict the development of pressure ulcers or to determine the prognosis of an ulcer once developed. Seven studies were identified that measured interface pressure and used the development or healing of pressure ulcers as an outcome measure. There appears to be a weak qualitative relation between interface pressure and the development of pressure ulcers. However, no conclusive clinical threshold for the interface pressure can be given. This, combined with the influence of individual characteristics, the low internal validity of interface pressure measurement for the prediction of pressure ulcers, and an incongruent relation between pressure magnitude and duration, results in the fact that no quantification of the predictive or prognostic value of interface pressure can be given.     

Pressure ulcers in veterans with spinal cord injury: a retrospective study

Pressure ulcers are a major complication of spinal cord injury (SCI) and have a significant effect on general health and quality of life. The objectives of this retrospective chart review were to determine prevalence, duration, and severity of pressure ulcers in veterans with SCI and to identify predictors of (1) outcome in terms of healing without surgery, not healing, or referral for surgery; (2) number of visits veterans made to the SCI outpatient clinic or received from home care services for pressure ulcer treatment; and (3) number of hospital admissions and days hospitalized for pressure ulcer treatment. From a sampling frame of 553 veterans on the Houston Veterans Affairs Medical Center SCI roster, 215 (39%) were reported to have visited the clinic or received home care for pressure ulcers (ICD-9 code 707.0 = decubitus, any site) during the 3 years studied (1997, 1998, and 1999). From this sample, 102 veterans met the inclusion criteria for further analyses, 56% of whom had paraplegia. The duration of ulcers varied greatly from 1 week to the entire 3-year time-frame. Overall, Stage IV pressure ulcers were the most prevalent as the worst ulcer documented. Number and severity of ulcers predicted outcome and healthcare utilization. This study illustrates the magnitude of the pressure ulcer problem among veterans with SCI living in the community. Reducing the prevalence of pressure ulcers among veterans with SCI will have a significant impact on the Department of Veterans Affairs' financial and social resources. Innovative approaches are needed to reduce pressure ulcer risk in veterans with SCI.     

Pressure ulcer prevalence in intensive care patients: a cross-sectional study

Background  Pressure ulcers are a potential complication for intensive care patients and their prevention is a major issue in nursing care. Therefore, this study aims to assess pressure ulcer prevalence in intensive care patients, patients' characteristics and preventive measures related to pressure ulcer prevalence in intensive care patients and to determine the most common body sites of pressure ulcers.
Method  The research design was a cross-sectional study. The sample consisted of 1760 patients (298 in 2002, 408 in 2003, 453 in 2004, 368 in 2005 and 233 participants in 2006) from surgical, medical and interdisciplinary intensive care.
Results  The results revealed a mean prevalence rate of ±30% from 2002 to 2005 while it considerably decreased down to 16.2% in 2006. Half of the pressure ulcers were of grade 1. Furthermore, a significant relation was found between the presence of pressure ulcers and age ( P  ≤ 0.022), Braden score ( P  ≤ 0.01) and bowel incontinence ( P  ≤ 0.01).
Conclusion  It is crucial to select appropriate and applicable preventive material/devices and nursing care measures. Moreover, factors related to the presence of pressure ulcers should be taken into consideration in order to prevent development of further pressure ulcers.     

A study of a pathway to reduce pressure ulcers for patients with a hip fracture

Due to an ageing population the numbers of patients with hip fractures are increasing. They often suffer from concomitant diseases and are therefore prone to be affected by complications such as pressure ulcers. The prevention of pressure ulcers among patients with a hip fracture is crucial. The aim of this study was to improve the quality of care and patient safety in patients with a hip fracture. A new evidence based clinical pathway was introduced to prevent hospital acquired pressure ulcers. Furthermore, the purpose was to bring attention to pressure ulcer prevention and to facilitate changes in clinical practice to improve quality of care and patient safety. A total of 478 patients with a hip fracture were consecutively included between April 2003 and March 2004. The new evidence based clinical pathway was introduced on October 1st 2003. The results from the first 210 patients in the control group and the last 210 patients in the intervention group are presented in this article. In the intervention group, hospital acquired pressure ulcers decreased by 50% (p < 0.007). It is possible to reduce the development of hospital acquired pressure ulcers among elderly patients with a hip fracture even though it is not possible to eliminate the effect of factors such as increased age and the patients’ medical status which are often the two main risk factors.     

Incidence of pressure ulcers in a neurologic intensive care unit

OBJECTIVES: To determine the risk factors for pressure ulceration in an intensive care setting, to evaluate the Braden scale as a predictor of pressure ulcer risk in critically ill patients, and to determine whether pressure ulcers are likely to occur early in the hospital stay. DESIGN: Cohort study of patients with no preexisting ulcers with a 3-month enrollment period. SETTING: The neurologic intensive care unit and the neurologic intermediate unit at a primary care/referral hospital with a level I trauma center. PATIENTS: A total of 186 patients entered the study. INTERVENTION: Within 12 hrs of admittance, initial assessment, photographs, and Braden score were completed. Patients were re-examined every 4 days or at discharge from the unit, whichever came first. MAIN OUTCOME MEASURES: Determining risk factors for pressure ulcers, performing detailed statistical analyses, and testing the usefulness of the Braden score as a predictor of pressure ulcer risk. RESULTS: Twenty-three of 186 patients developed at least one pressure ulcer (incidence = 12.4%) after an average stay of 6.4 days. The Braden scale, which measures six characteristics of skin condition and patient status, proved to be a primary predictor of ulcer development. No ulcers developed in the 69 patients whose Braden score was 16 or higher. The likelihood of developing a pressure sore was predicted mathematically from the Braden score. However, being underweight was a significant and distinct factor in pressure ulcer development. CONCLUSIONS: Pressure ulcers may develop within the first week of hospitalization in the intensive care unit. Patients at risk have Braden scores of < or = 16 and are more likely to be underweight. These results suggest that aggressive preventive care should be focused on those patients with Braden scores of < or = 13 and/or a low body mass index at admission.     

The prevalence and incidence of pressure ulcers in hospitalised patients in the Netherlands: a prospective inception cohort study

BACKGROUND: Pressure ulcers frequently occur in hospitalised patients. The prevalence of pressure ulcers grade 2 or worse varies from 3% to 12% in hospitalised patients. Incidence figures are not frequently reported. While incidence and prevalence are both measures of disease frequency, they provide different perspectives on pressure ulcers. OBJECTIVES: To describe the incidence rate and prevalence of pressure ulcers in hospitalised patients. DESIGN: Prospective inception cohort study. SETTING: Two large hospitals, one general (530-beds) and one teaching (1042-beds), in The Netherlands. PARTICIPANTS: A non-selected, though not strictly random, sample of 1536 patients was eligible for inclusion in the study. One thousand four hundred and thirty one patients (93.2%) consented to participate. Eventually, 1229 patients (80%) had a complete follow-up. The sample consisted of patients admitted to the surgical, internal, neurological and geriatric wards for more than 5 days between January 1999 and June 2000. METHODS: Follow-up once a week until pressure ulcer occurrence, discharge or length of stay over 12 weeks. MAIN OUTCOME MEASURES: Occurrence of a pressure ulcer grade 2 or worse during admission to hospital, according to the classification of the European Pressure Ulcer Advisory Panel. RESULTS: One hundred and thirty four patients developed 172 pressure ulcers during follow-up. The overall weekly incidence rate was 0.06 per week (95% confidence interval 0.05-0.07 per week). Highest rates were observed for surgical patients and lowest for geriatric and neurologic patients (0.08 and 0.02, respectively). The week specific prevalence varied between 12.8% and 20.3%. CONCLUSIONS: Among patients hospitalised for more than 5 days overall one may expect 6% per week to develop pressure ulcers. It would appear that any preventive measures can only be effective if taken timely. Accordingly, preventive measures should be considered early, because pressure ulcers were observed already within the first week of admission.