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A review of environmental hazards associated with in-patient falls.

Slips, trips and falls present the greatest risk to in-patients in terms of exposure (frequency of occurrence) but only present a low severity risk in terms of mortality. The risk factors have been categorized as intrinsic (individual to the patient, e.g. visual impairment, balance problems and medicine use) or extrinsic (environmental). Many recommendations have been made concerning the management of environmental hazards but, of these, only beds rails have supporting research evidence. Other recommendations include patient assessment, footwear, flooring, lighting, staffing levels and bed alarms. However, three systematic reviews and the current narrative review have all failed to find research evaluating the benefits of these recommendations. The most robust evidence relates to the use of bed rails. This research suggests that bed rails not only fail to reduce the frequency of falls, but may also exacerbate the severity of injury. As Maslow's Hierarchy of Needs model has been used as a framework for nursing models of care, it was chosen as the basis for the development of an environmental hazard assessment model. The environmental hazards are revisited using this model in order to take an ergonomic or patient-centred approach for risk assessment.

Accidental Falls↗

Environment influences functional outcome of cerebral infarction in rats.

BACKGROUND AND PURPOSE: The purpose of this study was to determine whether preoperative and postoperative enrichment of the environment can enhance the functional outcome after cerebral infarction in rats. METHODS: The right middle cerebral artery was ligated in adult spontaneously hypertensive male rats, and the functional outcome was studied for 12 weeks after the operation. Three groups were compared: A, rats kept in individual cages before and after the operation (n = 9); B, rats kept in individual cages before the operation but transferred to an enriched environment after the operation (n = 10); and C, rats kept in an enriched environment all the time (n = 12). The enriched environment consisted of a large cage with opportunities for various activities, but rats were not forced to do any particular tasks. RESULTS: Rats kept in an enriched environment (groups B and C) performed significantly better than rats in group A in a leg-placement test, beam walking, walking on a rotating pole, and climbing. The infarct size and thalamic atrophy did not differ among the groups. CONCLUSIONS: The laboratory environment is important for the functional outcome in brain ischemia. We hypothesize that an enriched environment may stimulate mechanisms that enhance brain plasticity after focal brain ischemia.

Animals↗

Designing a mental health center to replace a county hospital.

An architectural team worked closely with a county building committee and the administrative staff of a Wisconsin county hospital to design a new active-treatment facility. The goals included changing the hospital's negative image in the community, fostering a close relationship between all programs and all groups of users, and encouraging inpatients to make the best possible use of various treatment areas. Planning was interrupted by a community-wide controversy over the location, and the facility was eventually built on a compromise site. The new facility, a community mental health center serving two counties, has an open, split-level design accommodating six inpatient programs and a day hospital. An informal evaluation of the environment was made a year after the center was occupied.

Community Mental Health Services↗

Vitamin G: effects of green space on health, well-being, and social safety.

BACKGROUND: Looking out on and being in the green elements of the landscape around us seem to affect health, well-being and feelings of social safety. This article discusses the design of a research program on the effects of green space in the living environment on health, well-being and social safety. METHODS/DESIGN: The program consists of three projects at three different scales: at a macro scale using data on the Netherlands as a whole, at an intermediate scale looking into the specific effect of green space in the urban environment, and at micro scale investigating the effects of allotment gardens. The projects are observational studies, combining existing data on land use and health interview survey data, and collecting new data through questionnaires and interviews. Multilevel analysis and GIS techniques will be used to analyze the data. DISCUSSION: Previous (experimental) research in environmental psychology has shown that a natural environment has a positive effect on well-being through restoration of stress and attentional fatigue. Descriptive epidemiological research has shown a positive relationship between the amount of green space in the living environment and physical and mental health and longevity. The program has three aims. First, to document the relationship between the amount and type of green space in people's living environment and their health, well-being, and feelings of safety. Second, to investigate the mechanisms behind this relationship. Mechanisms relate to exposure (leading to stress reduction and attention restoration), healthy behavior and social integration, and selection. Third, to translate the results into policy on the crossroads of spatial planning, public health, and safety. Strong points of our program are: we study several interrelated dependent variables, in different ordinary settings (as opposed to experimental or extreme settings), focusing on different target groups, using appropriate multilevel methods.

Attention↗

Reliability and validity of two instruments designed to assess the walking and bicycling suitability of sidewalks and roads.

PURPOSE: Public health professionals hypothesize that when community environments provide suitable walking and bicycling conditions, community members will be more active. Measurement indicators and assessment instruments are needed to evaluate suitability. This study determined the reliability and validity of two instruments to assess the suitability of sidewalks for walking and roads for bicycling. METHODS: Two data collectors used walking and bicycling suitability assessment instruments to collect data on 31 road segments. In addition, three transportation experts used a 7-point Likert response system to subjectively evaluate walking and bicycling conditions for the same segments. Intraclass correlations determined the reliability of each assessment instrument and the reliability of the Likert response system. Pearson correlations (research staff assessments with expert assessments) were calculated to determine the criterion-related validity of the suitability measures. RESULTS: Intercoder reliability (intraclass) correlations for the walking and bicycling assessment instruments were r = .79 and .90, respectively. Intercoder reliability of the experts' Likert response system was r = .73 for the walking form and r = .77 for the bicycling form. Criterion-related validity (Pearson) correlations for the walking and bicycling assessment instruments were r = .58 and .62, respectively. CONCLUSION: Although some variables have lower reliability and validity than is ideal, the walking and bicycling suitability assessment instruments appear promising as instruments for community members and professionals to systematically assess key aspects of the physical environment.

Bicycling↗

The relationship between patient behaviour and environmental quality for the dementing.

BACKGROUND: The quality of long-term hospital care for demented patients has never been studied in relation to the behaviour of the residents, although this relationship has been studied for other patient groups and in other settings. METHOD: Five aspects of environmental quality were assessed using a rating scale package. Seven wards with a range of quality were selected and patient behaviour categorized and recorded using a direct observation method. RESULTS: Comparative analyses revealed that institutional ward practices were associated with abnormal motor activity and inappropriate behaviour. In addition, social/recreational provision was associated with increased social behaviour and less time spent doing nothing, although high levels of provision were also associated with abnormal motor activity and inappropriate behaviour. Inappropriate behaviour also appeared to be related to a lack of provision of reality orientation cues and to better quality of ward condition. Space availability was not associated with any behavioural patterns. CONCLUSIONS: Some aspects of the environment are associated with patterns of behaviour. There is a need for further research both in this setting and in non-hospital settings.

Aged↗

Recruitment of benthic organisms onto a planned artificial reef: shifts in community structure one decade post-deployment.

Most artificial reef (AR) studies have examined the early colonization stages of benthic communities, while only a few have monitored the development of AR communities beyond the initial successional phases and evaluated the time scale needed for such development. In addition, despite the proliferation of AR studies, comparative studies between artificial and natural reefs (NRs) are scarce. We present here the monitoring results of initial (1-2 year) and progressed (10 year) stages of the developing benthic communities of a purpose-planned AR submerged at Eilat, Israel (Red Sea), and compare them to its adjacent NR. Visual surveys of macro-invertebrates were conducted on the initial stages and coral communities were characterized at the progressed stage, using belt transects. The results demonstrate a distinct shift in species composition of the AR communities along the monitoring periods: from a soft coral dominated community, comprised mainly of Dendronephthya hemprichi, in initial developmental stages of up to two years post-deployment, to a community dominated by the sponge Crella cyatophora at year 10. Distinct differences in coral species count, living cover and diversity were found between the AR and its neighboring NR. We estimate the time frame required to develop a progressed diverse AR community to be well over a decade, even in tropical ecosystems. The factors shaping the species composition of purpose-designed ARs in a coral reef environment, including structural design, spatial orientation, depth and age, are discussed.

Animals↗

Immunogenicity of heme complexes of peptides designed to mimic the heme environment of myoglobin and hemoglobin.

In the preceding paper (Protein J. 25, pages 37-49, 2005), we reported the preparation and oxygen-binding properties of peptides that form stable complexes with heme mimic. The design of the peptides was based on the natural environment of the heme group in myoglobin (Mb) and in the alpha- and beta-subunits of human adult hemoglobin (Hb). In the present work, the heme-peptides were each administered into mice, either as emulsions in adjuvant (both for injections and boosters) or intravenously as solutions in phosphate-buffered saline. Antibody (Ab) responses, monitored up to 14 weeks after the first administration, showed that when the heme-peptides were injected with adjuvant they stimulated Ab responses against the immunizing peptide, which in most cases bound to the correlate protein (Mb or Hb). However these heme-peptides were non-immunogenic when administered in PBS intravenously. It is concluded that heme-peptides:(a) would not trigger an adverse immune response if used for transfusion purposes.

Adjuvants, Immunologic↗

Traumatic brain injury: designing and implementing a population-based follow-up system.

Craig Hospital and the Colorado Department of Public Health and Environment began designing a population-based follow-up system for persons with traumatic brain injury (TBI) in 1994. With funding from the Centers for Disease Control and Prevention, the Colorado TBI Follow-up System addresses the issue, "What happens to persons with TBI after they are discharged from the hospital?" Two methods of data collection are used, medical record review and annual telephone surveys to gather long-term outcomes. The design calls for following all persons hospitalized with severe TBI (defined as any person with inpatient rehabilitation and/or with an Abbreviated Injury Scale [AIS] score for the head of 3 or greater) and a 20% random sample of persons hospitalized with less severe TBI. An expert panel was used to select variables for retrospective abstracting and prospective interviewing. Information obtained from medical records includes data verifying eligibility, diagnoses, radiological results, circumstances of injury, and severity of injury, as well as demographic data. The interview instrument includes questions and scales related to health status, disability, handicap, quality of life, and service utilization. Both methods of data collection have been pilot-tested and are now used routinely in the Colorado TBI Follow-up System.

Brain Injuries↗

Containment system for the preparation of vitrified-hydrated virus specimens.

A guillotine-type quick freezing device and a bio-hazard containment box have been designed, constructed, and used to prepare vitrified-hydrated specimens of viruses in their native environment. Special design considerations include the preservation of the specimen in its natural state in vitrified ice, prevention of virus aerosols escape, and control of the potentially explosive air-coolant vapor mixtures.

Containment of Biohazards↗

Analysing and developing object-oriented medical applications with HELIOS.

The HELIOS project promotes systematic reuse of existing software in a valuable methodological context. In order to reach this goal, the Analysis and Design Development Environment (ADDE) has been realized as a HELIOS component. This component includes the Analysis and Design sub-component (ADT), which supports the Rumbaugh's object-oriented methodology and the Insertion Retrieval Tool (IRT), which implements the reuse. The ADT sub-component enhances the quality of software development permitting a correct analysis, and design and a satisfactory documentation. The IRT Tool is dedicated to reuse by retrieving parts of existing applications (retrieve) and by qualifying elements just created or updated (insertion). A faceted system adapted to the medical domain allows an efficient search among the object database. Both tools contribute to reducing the cost of software development. This paper presents the design and the implementation of these tools in the HELIOS framework.

Database Management Systems↗