Barriers to Advance Care Planning in Older Adults With Dementia, Their Families and Healthcare Professionals: An Umbrella Review of Qualitative Evidence

This umbrella review aimed to examine and synthesize qualitative studies that explored the barriers and facilitators of advance care planning for persons with dementia, their families, and their healthcare professionals and caregivers. The modified umbrella review approach developed by the Joanna Briggs Institute was followed. Five major English databases were searched. Four reviews based on 38 primary qualitative studies were included. The methodological quality of the included reviews was moderate to high. The synthesis yielded 16 descriptive themes and five analytical themes: making the wishes/preferences of persons with dementia visible; constructive collaboration based on stakeholders having positive relationships; emotional chaos in facing end-of-life substitute decision-making; initiating the advance care planning process; and preparedness and commitment of healthcare providers to advance care planning. Comprehensive and workable strategies are required to overcome complex and interrelated barriers involving not only healthcare professionals but also organizational and systemic challenges.

Patient characteristics of, and remedial interventions for, complaints and medico-legal claims against doctors: a rapid review of the literature

BACKGROUND

It is uncertain if patient's characteristics are associated with complaints and claims against doctors. Additionally, evidence for the effectiveness of remedial interventions on rates of complaints and claims against doctors has not been synthesised.

METHODS

We conducted a rapid review of recent literature to answer: Question 1 "What are the common characteristics and circumstances of patients who are most likely to complain or bring a claim about the care they have received from a doctor?" and Question 2 "What initiatives or interventions have been shown to be effective at reducing complaints and claims about the care patients have received from a doctor?". We used a systematic search (most recently in July 2023) of PubMed, Scopus, Web of Science and grey literature. Studies were screened against inclusion criteria and critically appraised in duplicate using standard tools. Results were summarised using narrative synthesis.

RESULTS

From 8079 search results, we reviewed the full text of 250 studies. We included 25 studies: seven for Question 1 (6 comparative studies with controls and one systematic review) and 18 studies for Question 2 (14 uncontrolled pre-post studies, 2 comparative studies with controls and 2 systematic reviews). Most studies were set in hospitals across a mix of medical specialties. Other than for patients with mental health conditions (two studies), no other patient characteristics demonstrated either a strong or consistent effect on the rate of complaints or claims against their treating doctors. Risk management programs (6 studies), and communication and resolution programs (5 studies) were the most studied of 6 intervention types. Evidence for reducing complaints and medico-legal claims, costs or premiums and more timely management was apparent for both types of programs. Only 1 to 3 studies were included for peer programs, medical remediation, shared decision-making, simulation training and continuing professional development, with few generalisable results.

CONCLUSION

Few patient characteristics can be reliably related to the likelihood of medico-legal complaints or claims. There is some evidence that interventions can reduce the number and costs of claims, the number of complaints, and the timeliness of claims. However, across both questions, the strength of the evidence is very weak and is based on only a few studies or study designs that are highly prone to bias.

What are the experiences of team members involved in root cause analysis? A qualitative study

BACKGROUND

Conducting root cause analysis (RCA) is complex and challenging. The aim of this study was to better understand the experiences of RCA team members and how they value their involvement in the RCA to inform future recruitment, conduct and implementation of RCA findings into clinical practice.

METHODS

The study was set in a health network in Adelaide, South Australia. A qualitative exploratory descriptive approach was undertaken to provide an in-depth understanding of team member's experience in participating in an RCA. Eight of 27 RCA team members who conducted RCAs in the preceding 3-year period were included in one of three semi-structured focus groups. Thematic analysis was used to synthesise the transcribed data into themes.

RESULTS

We derived four major themes: Experiences and perceptions of the RCA team, Limitations of RCA recommendations, Facilitators and barriers to conducting an RCA, and Supporting colleagues involved in the adverse event. Participants' mixed experience of RCAs ranged from enjoyment and the perception of worth and value to concerns about workload and lack of impact. Legislative privilege protecting RCAs from disclosure was both a facilitator and a barrier. Concern and a desire to better support their colleagues was widely reported.

CONCLUSIONS

Clinicians perceived value in reviewing significant adverse events. Improvements can be made in sharing learnings to make effective improvements in health care. We have proposed a process to better support interviewees and strengthen post interview follow up.

Comparing rates of adverse events detected in incident reporting and the Global Trigger Tool: a systematic review

Many hospitals continue to use incident reporting systems (IRSs) as their primary patient safety data source. The information IRSs collect on the frequency of harm to patients [adverse events (AEs)] is generally of poor quality, and some incident types (e.g. diagnostic errors) are under-reported. Other methods of collecting patient safety information using medical record review, such as the Global Trigger Tool (GTT), have been developed. The aim of this study was to undertake a systematic review to empirically quantify the gap between the percentage of AEs detected using the GTT to those that are also detected via IRSs. The review was conducted in adherence to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. Studies published in English, which collected AE data using the GTT and IRSs, were included. In total, 14 studies met the inclusion criteria. All studies were undertaken in hospitals and were published between 2006 and 2022. The studies were conducted in six countries, mainly in the USA (nine studies). Studies reviewed 22 589 medical records using the GTT across 107 institutions finding 7166 AEs. The percentage of AEs detected using the GTT that were also detected in corresponding IRSs ranged from 0% to 37.4% with an average of 7.0% (SD 9.1; median 3.9 and IQR 5.2). Twelve of the fourteen studies found <10% of the AEs detected using the GTT were also found in corresponding IRSs. The >10-fold gap between the detection rates of the GTT and IRSs is strong evidence that the rate of AEs collected in IRSs in hospitals should not be used to measure or as a proxy for the level of safety of a hospital. IRSs should be recognized for their strengths which are to detect rare, serious, and new incident types and to enable analysis of contributing and contextual factors to develop preventive and corrective strategies. Health systems should use multiple patient safety data sources to prioritize interventions and promote a cycle of action and improvement based on data rather than merely just collecting and analysing information.

Issues and complexities in safety culture assessment in healthcare

The concept of safety culture in healthcare-a culture that enables staff and patients to be free from harm-is characterized by complexity, multifacetedness, and indefinability. Over the years, disparate and unclear definitions have resulted in a proliferation of measurement tools, with lack of consensus on how safety culture can be best measured and improved. A growing challenge is also achieving sufficient response rates, due to "survey fatigue," with the need for survey optimisation never being more acute. In this paper, we discuss key challenges and complexities in safety culture assessment relating to definition, tools, dimensionality and response rates. The aim is to prompt critical reflection on these issues and point to possible solutions and areas for future research.

Economic evaluation of a medical ambulatory care service using a single group interrupted time-series design

RATIONALE

Increasing demand for hospital services can lead to overcrowding and delays in treatment, poorer outcomes and a high cost-burden. The medical ambulatory care service (MACS) provides out of hospital patient care, including diagnostic and therapeutic interventions for patients that require urgent attention, but which can be safely administered in the ambulatory environment. The programme is yet to be rigorously evaluated.

AIMS/OBJECTIVES

The aim of this study is to evaluate the impact of the MACS programme on emergency department (ED) presentations, hospital admissions, length-of-stay and health service costs from a health system perspective.

METHOD

We used a single group interrupted time series methodology with a multiple baseline approach to analyse the impact of the MACS clinic on ED presentations, hospital admissions, length-of-stay and cost outcomes for general practitioners (GP)-referred, ED-referred and ward-referred patients under two counterfactual scenarios: an increasing trend in health utilization based on preperiod predictions or a stabilization of utilization rates.

RESULTS

The time trend of hospital utilization differed after attending MACS for all three referral groups. The time trend for the GP-referred group declined significantly by 0.36 ED presentations per 100 patients per 30 days [95% confidence interval (CI): -0.52 to -0.2], while inpatient length of stay declined significantly by 1.56 and 3.70 days, respectively, per 100 ED-referred and ward-referred patients per 30 days (95% CI: -2.51 to -0.57 and -5.71 to -1.69, respectively). Under two different counterfactual scenarios, the predicted net savings for MACS across three patient groups were $78,685 (95% CI: $54,807-$102,563) and $547,639 (95% CI: $503,990-$591,287) per 100 patients over 18 months.

CONCLUSION

MACS was found to be cost-effective for GP and ward-referred groups, but the expected impact for ED-referred patients is sensitive to assumptions. Expansion of the service for GP-referred patients is expected to reduce hospitalizations the most and generate the largest net cost savings.

Missed nursing care, nurse staffing levels and patient safety outcomes in low-income country acute care settings: An observational study

AIMS

The aim of this study was to measure the level of missed nursing care and determine its relationship with nurse staffing and patient safety outcomes in acute care settings in Ethiopia.

BACKGROUND

Missed nursing care in hospitals increases the likelihood of patient adverse events, complications, disability and death. However, little is known about the level of missed nursing care and its impact on patient outcomes in low-income countries.

METHODS

An observational study was conducted comprising of a survey of nurses at two time points (n = 74 and 80, respectively) and a medical record review of 517 patients in four units across two hospitals between September 2018 and March 2019.

RESULTS

The level of missed nursing care in the study units was very high. The hospital type and hours nurses worked during the last week were significantly associated with missed nursing care. A unit increase in missed nursing care score increased the incidence of adverse patient outcomes by 10%.

CONCLUSION

There was a higher level of missed nursing care in the study units compared with similar studies from high-income countries. Higher level of missed nursing care was significantly associated with higher incidence of adverse patient safety outcomes.

Protein prescription and delivery practices in critically ill adults: A survey of Australian and New Zealand intensive care dietitians

BACKGROUND

Protein provision is thought to be integral to attenuating muscle wasting in critical illness, yet patients receive half of that prescribed. As international guidelines lack definitive evidence to support recommendations, understanding clinicians' views relating to protein practices is of importance.

OBJECTIVES

The objective of this study was to describe Australia and New Zealand intensive care unit (ICU) dietitians' protein prescription and perceived delivery practices in critically ill adults, including common barriers and associations between ICU clinical experience and protein prescriptions for different clinical conditions.

METHODS

A 42-item descriptive quantitative survey of Australian and New Zealand intensive care dietitians was disseminated through nutrition and ICU society e-mailing lists. Data were collected on respondent demographics and reported protein practices including questions related to a multitrauma case study. Data were analysed using descriptive and content analysis and reported as n (%). Fisher's exact tests were used to compare experience and protein prescriptions.

RESULTS

Of the 67 responses received (one excluded due to >50% missing data), more than 80% of respondents stated they would prescribe 1.2-1.5 g protein/kg bodyweight/day for most critically ill patients, most commonly using European Society of Clinical Nutrition and Metabolism (ESPEN) guidelines to support prescriptions (n = 61/66, 92%). Most respondents (n = 49/66, 74%) thought their practice achieved 61-80% of protein prescriptions, with frequently reported barriers including fasting periods (n = 59/66, 89%), avoiding energy overfeeding (n = 50/66, 76%), and gastrointestinal intolerance (n = 47/66, 71%). No associations between years of ICU experience and protein prescriptions for 14 of the 15 predefined clinical conditions were present.

CONCLUSIONS

Australian and New Zealand ICU dietitians use international guidelines to inform protein prescriptions of 1.2-1.5 g/kg/day for most clinical conditions, and protein prescriptions do not appear to be influenced by years of ICU experience. Key perceived barriers to protein delivery including avoidance of energy overfeeding and gastrointestinal intolerance could be explored to improve protein adequacy.

An exposé of Frappellian Motion

Contrary to the well-recognised role of an abstract in helping to summarise the main points of the following article, this abstract takes its influence from Peter B. Frappell ('Frapps') and, therefore, is distracted from its key purpose. While the abstract was supposed to discuss the serious phenomenon of 'Frappellian Motion' (FM), someone just passed along some gossip that is heaps more exciting, so "let's go grab a beer and I'll talk at you".

Home infusions of natalizumab for people with multiple sclerosis: a pilot randomised crossover trial

Objective

The delivery of healthcare at home has expanded to intravenous infusions of monoclonal antibodies. A recently developed model of care for home infusions of natalizumab for people with relapsing‐remitting multiple sclerosis was evaluated. This pilot study of home infusions of natalizumab and usual care (attendance in a hospital out‐patients’ clinic) compared safety, feasibility, patient satisfaction, effectiveness and costs.

Methods

In this randomised AB/BA crossover trial, 37 adults were randomised to usual care (n = 19) or home infusions (n = 18). After three infusions, patients crossed over to the alternate treatment for another three infusions. Patient safety outcomes and adherence, satisfaction, quality of life, disability and costs were compared.

Results

No adverse events were recorded from 207 infusions from 35 patients across both home and clinic infusions. There was no difference in adherence (p = 0.71) and infection rates (p = 0.84) between home and clinic settings. Satisfaction with “convenience” of home infusions was significantly greater (p = 0.008) but there were no differences in quality of life measures. Excluding pharmacy, costs were A$74 lower per infusion at home, including A$16 of patients” out‐of‐pocket costs.

Interpretation

There were no differences in safety and effectiveness between clinic and home infusions of natalizumab. The home infusions were shown to be feasible, more convenient and less expensive than usual care. Larger scale studies are required to verify these preliminary findings, particularly around safety and management of hypersensitivity adverse events in the home setting and for equivalence of clinical outcomes.

Impact of nurse staffing on patient and nurse workforce outcomes in acute care settings in low- and middle-income countries: a systematic review

OBJECTIVE

The objective of this review was to determine the effect of nurse staffing on patient and nurse workforce outcomes in acute care settings within low- and middle-income countries.

INTRODUCTION

Health care systems in low- and middle-income countries experience a high proportion of the global burden of disease, which is aggravated by several health care constraints. The high rates of both communicable and non-communicable diseases, low numbers in the workforce, poor distribution of qualified professionals, and constraints in medical supplies and resources make the provision of quality health care challenging in low- and middle-income countries. Health care systems in low- and middle-income countries, however, are still expected to address universal health care access and provide high-quality health care. Systematic reviews examining nurse staffing and its effect on patient and nurse workforce outcomes are largely from the perspective of high-income countries. There is a need to understand the evidence on nurse staffing and its impact in the context of low- and middle-income countries.

INCLUSION CRITERIA

Empirical studies that addressed acute care nurse staffing levels, such as nurse-to-patient ratio or nurses' qualifications, experience, and skill mix, and their influence on patient and nurse workforce outcomes were included in the review. Studies conducted in a low- or middle-income country were included. Outcomes must have been measured objectively using validated tools.

METHODS

Studies published until July 2019 were identified from CINAHL, PubMed, Scopus, Embase, PsycINFO, Cochrane Library, Web of Science, and ProQuest Dissertations and Theses. The JBI approach to critical appraisal, study selection, data extraction, and data synthesis was used for this review. Narrative synthesis was conducted due to high heterogeneity of included studies. The level of evidence was determined using GRADEpro.

RESULTS

Twenty-seven studies were included in this review and the level of evidence was low, mainly due to the design of included studies. Low nurse-to-patient ratio or high nurse workload was associated with higher rates of in-hospital mortality, hospital-acquired infection, medication errors, falls, and abandonment of treatment. Findings on the effect of nurse staffing on length of hospital stay and incidence of pressure ulcers were inconsistent. Extended work hours, less experience, and working night or weekend shifts all significantly increased medication errors. Higher nurse workload was linked to higher levels of nurses' burnout, needlestick and sharps injuries, intent to leave, and absenteeism.

CONCLUSIONS

Lower nurse-to-patient ratios and higher nurse workload are linked to in-hospital mortality, hospital-acquired infections, and medication errors among patients, and high levels of burnout, needlestick and sharps injuries, absenteeism, and intention to leave their job among nurses in low- and middle-income countries. The results of this review show similarities with the evidence from high-income countries regarding poor outcomes for patients and nurses. These findings should be considered in light of the lower nurse-to-patient ratios in most low- and middle-income countries.

SYSTEMATIC REVIEW REGISTRATION NUMBER

PROSPERO CRD42018119428.

Commonly Used Screening Instruments to Identify Frailty Among Community-Dwelling Older People in a General Practice (Primary Care) Setting: A Study of Diagnostic Test Accuracy

BACKGROUND

Rapid frailty screening remains problematic in primary care. The diagnostic test accuracy (DTA) of several screening instruments has not been sufficiently established. We evaluated the DTA of several screening instruments against two reference standards: Fried's Frailty Phenotype [FP] and the Adelaide Frailty Index [AFI]), a self-reported questionnaire.

METHODS

DTA study within three general practices in South Australia. We randomly recruited 243 general practice patients aged 75+ years. Eligible participants were 75+ years, proficient in English and community-dwelling. We excluded those who were receiving palliative care, hospitalized or living in a residential care facility.We calculated sensitivity, specificity, predictive values, likelihood ratios, Youden Index and area under the curve (AUC) for: Edmonton Frail Scale [EFS], FRAIL Scale Questionnaire [FQ], Gait Speed Test [GST], Groningen Frailty Indicator [GFI], Kihon Checklist [KC], Polypharmacy [POLY], PRISMA-7 [P7], Reported Edmonton Frail Scale [REFS], Self-Rated Health [SRH] and Timed Up and Go [TUG]) against FP [3+ criteria] and AFI [>0.21].

RESULTS

We obtained valid data for 228 participants, with missing scores for index tests multiply imputed. Frailty prevalence was 17.5% frail, 56.6% prefrail [FP], and 48.7% frail, 29.0% prefrail [AFI]. Of the index tests KC (Se: 85.0% [70.2-94.3]; Sp: 73.4% [66.5-79.6]) and REFS (Se: 87.5% [73.2-95.8]; Sp: 75.5% [68.8-81.5]), both against FP, showed sufficient diagnostic accuracy according to our prespecified criteria.

CONCLUSIONS

Two screening instruments-the KC and REFS, show the most promise for wider implementation within general practice, enabling a personalized approach to care for older people with frailty.

Nurse staffing models in medical-surgical units of acute care settings: A cross-sectional study

BACKGROUND

Nurse staffing models have been developed across different countries to address nursing shortages and improve quality of nursing care. However, there is no published study that describes nurse staffing models in Ethiopian hospitals.

AIMS

To describe the existing staffing models for nursing practice in acute care units of two hospitals (one public and one private) in Ethiopia.

METHODS

A cross-sectional study was conducted from July to December 2018. A self-administered questionnaire was used to collect data such as shift patterns, hours worked, and number of patients cared for per shift. Unit-level data on nurse staffing were collected using a checklist developed specifically for this study.

RESULTS

Fifty-nine percent (59.9%) of participants reported that they worked six or seven days per week. On average, they worked 50 hours per week and 12% working over 60 hours per week. The number of patients they provided care for during their last shift ranged from four to 45 with an average of 13 patients.

CONCLUSION

This study demonstrates that nurses working in acute care settings in Ethiopia are typically working more than 40 hours per week and caring for many patients per shift, which has the potential to impact patient safety.

Diagnostic test accuracy of self-reported screening instruments in identifying frailty in community-dwelling older people: A systematic review

Against a backdrop of aging populations worldwide, it has become increasingly important to identify frailty screening instruments suitable for community settings. Self-reported and/or administered instruments might offer significant simplicity and efficiency advantages over clinician-administered instruments, but their comparative diagnostic test accuracy has yet to be systematically examined. The aim of this systematic review was to determine the diagnostic test accuracy of self-reported and/or self-administered frailty screening instruments against two widely accepted frailty reference standards (the frailty phenotype and the Frailty Index) within community-dwelling older adult populations. We carried out a systematic search of the Embase, CINAHL, MEDLINE, PubMed, Web of Science, PEDro, PsycINFO, ProQuest Dissertations, Open Grey and GreyLit databases up to April 2017 (with an updated search carried out over May-July 2018) to identify studies reporting comparison of self-reported and/or self-administered frailty screening instruments against an appropriate reference standard, with a minimum sensitivity threshold of 80% and specificity threshold of 60%. We identified 24 studies that met our selection criteria. Four self-reported screening instruments across three studies met minimum sensitivity and specificity thresholds. However, in most cases, study design considerations limited the reliability and generalizability of the results. Additionally, meta-analysis was not carried out, because no more than three studies were available for any of the unique combinations of index tests and reference standards. Although the present study has shown that a number of self-reported frailty screening instruments reported sensitivity and specificity within a desirable range for community application, additional diagnostic test accuracy studies are required. Geriatr Gerontol Int 2020; 20: 14-24.

Effectiveness of exercise interventions on physical function in community-dwelling frail older people: an umbrella review of systematic reviews

OBJECTIVES

This umbrella review aimed to determine the effectiveness of exercise interventions, alone or in combination with other interventions, in improving physical function in community-dwelling older people identified as pre-frail or frail.

INTRODUCTION

Exercise is said to have a positive impact on muscle mass and strength which improves physical function and hence is beneficial for the treatment of frailty. Several systematic reviews discuss the effects of exercise interventions on physical function parameters, such as strength, mobility, gait, balance and physical performance, and indicate that multi-component exercise, including resistance, aerobic, balance and flexibility training, appears to be the best way in which to improve physical function parameters in frail older people. However, there is still uncertainty as to which exercise characteristics (type, frequency, intensity, duration and combinations) are the most effective and sustainable over the long-term.

INCLUSION CRITERIA

Participants were adults, 60 years or over, living in the community and identified as pre-frail or frail. Quantitative systematic reviews, with or without meta-analysis that examined the effectiveness of exercise interventions of any form, duration, frequency and intensity, alone or in combination with other interventions designed to alter physical function parameters in frail older people, were considered. The quantitative outcome measures were physical function, including muscular strength, gait, balance, mobility and physical performance.

METHODS

An iterative search strategy for ten bibliometric databases and gray literature was developed. Critical appraisal of seven systematic reviews was conducted independently by two reviewers using a standard Joanna Briggs Institute tool. Data was extracted independently by two reviewers using a standard Joanna Briggs Institute data extraction tool and summarized using a narrative synthesis approach.

RESULTS

Seven systematic reviews were included in this umbrella review, with a total of 58 relevant randomized controlled trials and 6927 participants. Five systematic reviews examined the effects of exercise only, while two systematic reviews reported on exercise in combination with a nutritional approach, including protein supplementations, as well as fruit and dairy products. The average exercise frequency was 2-3 times per week (mean 3.0 ± 1.5 times per week; range 1-7 weekly) for 10-90 minutes per session (mean of 52.0 ± 16.5 mins) and a total duration of 5-72 weeks with the majority lasting a minimum of 2.5 months (mean 22.7 ± 17.7 weeks). Multi-component exercise interventions can currently be recommended for pre-frail and frail older adults to improve muscular strength, gait speed, balance and physical performance, including resistance, aerobic, balance and flexibility tasks. Resistance training alone also appeared to be beneficial, in particular for improving muscular strength, gait speed and physical performance. Other types of exercise were not sufficiently studied and their effectiveness is yet to be established.

CONCLUSIONS

Interventions for pre-frail and frail older adults should include multi-component exercises, including in particular resistance training, as well as aerobic, balance and flexibility tasks. Future research should adopt a consistent definition of frailty and investigate the effects of other types of exercise alone or in combination with nutritional interventions so that more specific recommendations can be made.

Clinical protocols for adults with acute abdominal pain in Australian emergency departments

RATIONALE, AIMS AND OBJECTIVES

Patients with acute abdominal pain are a common presentation in hospital emergency departments; however, international studies have demonstrated that hospitals often lack clinical protocols to guide care. This study aimed to investigate whether Australian hospital emergency departments have acute abdominal pain clinical protocols, identify hospital-level predictors of the presence of these clinical protocols, and assess the quality of protocols.

METHODS

A survey was sent to all Australian hospitals with emergency departments, collecting data on hospital characteristics and the presence of acute abdominal pain clinical protocols. Participating hospitals (n = 73, 26% response rate) were also asked to provide a copy of these protocols. The quality of these protocols was assessed using Appraisal of Guidelines for REsearch & Evaluation (AGREE) II.

RESULTS

Slightly more than half (n = 40) of the hospitals surveyed had acute abdominal pain clinical protocols, while 16 had a general pain protocol. In binomial logistic regression, two independent variables were related to the presence of a protocol, geographic region (P = 0.008) and advanced practice nurses/nurse practitioners' presence on staff (P = 0.024). The mean score for the overall quality assessment of these protocols was 4.2 on a seven-point Likert scale; in terms of the six domains of quality, "Clarity of presentation" and "Scope and purpose" were highest. The overall quality of clinical protocols increased with remoteness, χ² (3) = 8.341, P = 0.039, and was lower in hospitals with medical staff on site (U = 2.5, P = 0.007).

CONCLUSION

There is a documented standard for pain management of acute abdominal pain in about three quarters of participating Australian emergency departments. The use and quality of clinical protocols is influenced by the physical location of hospitals and staff and skill mix of clinicians.

Hospital nurse-staffing models and patient- and staff-related outcomes

BACKGROUND

Nurses comprise the largest component of the health workforce worldwide and numerous models of workforce allocation and profile have been implemented. These include changes in skill mix, grade mix or qualification mix, staff-allocation models, staffing levels, nursing shifts, or nurses' work patterns. This is the first update of our review published in 2011.

OBJECTIVES

The purpose of this review was to explore the effect of hospital nurse-staffing models on patient and staff-related outcomes in the hospital setting, specifically to identify which staffing model(s) are associated with: 1) better outcomes for patients, 2) better staff-related outcomes, and, 3) the impact of staffing model(s) on cost outcomes.

SEARCH METHODS

CENTRAL, MEDLINE, Embase, two other databases and two trials registers were searched on 22 March 2018 together with reference checking, citation searching and contact with study authors to identify additional studies.

SELECTION CRITERIA

We included randomised trials, non-randomised trials, controlled before-after studies and interrupted-time-series or repeated-measures studies of interventions relating to hospital nurse-staffing models. Participants were patients and nursing staff working in hospital settings. We included any objective reported measure of patient-, staff-related, or economic outcome. The most important outcomes included in this review were: nursing-staff turnover, patient mortality, patient readmissions, patient attendances at the emergency department (ED), length of stay, patients with pressure ulcers, and costs.

DATA COLLECTION AND ANALYSIS

We worked independently in pairs to extract data from each potentially relevant study and to assess risk of bias and the certainty of the evidence.

MAIN RESULTS

We included 19 studies, 17 of which were included in the analysis and eight of which we identified for this update. We identified four types of interventions relating to hospital nurse-staffing models:- introduction of advanced or specialist nurses to the nursing workforce;- introduction of nursing assistive personnel to the hospital workforce;- primary nursing; and- staffing models.The studies were conducted in the USA, the Netherlands, UK, Australia, and Canada and included patients with cancer, asthma, diabetes and chronic illness, on medical, acute care, intensive care and long-stay psychiatric units. The risk of bias across studies was high, with limitations mainly related to blinding of patients and personnel, allocation concealment, sequence generation, and blinding of outcome assessment.The addition of advanced or specialist nurses to hospital nurse staffing may lead to little or no difference in patient mortality (3 studies, 1358 participants). It is uncertain whether this intervention reduces patient readmissions (7 studies, 2995 participants), patient attendances at the ED (6 studies, 2274 participants), length of stay (3 studies, 907 participants), number of patients with pressure ulcers (1 study, 753 participants), or costs (3 studies, 617 participants), as we assessed the evidence for these outcomes as being of very low certainty. It is uncertain whether adding nursing assistive personnel to the hospital workforce reduces costs (1 study, 6769 participants), as we assessed the evidence for this outcome to be of very low certainty. It is uncertain whether primary nursing (3 studies, > 464 participants) or staffing models (1 study, 647 participants) reduces nursing-staff turnover, or if primary nursing (2 studies, > 138 participants) reduces costs, as we assessed the evidence for these outcomes to be of very low certainty.

AUTHORS' CONCLUSIONS

The findings of this review should be treated with caution due to the limited amount and quality of the published research that was included. We have most confidence in our finding that the introduction of advanced or specialist nurses may lead to little or no difference in one patient outcome (i.e. mortality) with greater uncertainty about other patient outcomes (i.e. readmissions, ED attendance, length of stay and pressure ulcer rates). The evidence is of insufficient certainty to draw conclusions about the effectiveness of other types of interventions, including new nurse-staffing models and introduction of nursing assistive personnel, on patient, staff and cost outcomes. Although it has been seven years since the original review was published, the certainty of the evidence about hospital nurse staffing still remains very low.

Impact of nurse staffing on patient and nurse workforce outcomes in acute care settings in low- and middle-income countries: a systematic review protocol

REVIEW QUESTION/OBJECTIVE

The objective of this review is to demonstrate the effect of nurse staffing on patient and nurse workforce outcomes in acute care settings in low- and middle-income countries.

Health behaviours of Australian men and the likelihood of attending a dedicated men's health service

Background

Redesigning primary health services may enhance timely and effective uptake by men. The primary aim of this study was to assess the likelihood of Australian men attending a dedicated men’s health service (DMHS). The further aims were to better understand the reasons for their preferences and determine how health behaviours influence likelihood.

Methods

A survey on health service use and preferences, health help-seeking behaviours, and the likelihood of attending a DMHS was administered by telephone to 1506 randomly selected men (median age 56 years, range 19–95). Likelihood of attending a DMHS was rated using a single item Likert scale where 0 was not at all likely and 10 highly likely. Respondents were classified by age (< or > = 65 years) and health status. Principal component analyses were used to define health behaviours, specifically help-seeking and delay/avoidance regarding visiting a doctor. Multivariable linear and logistic regression analyses were used to examine predictors of likelihood of attending a DMHS.

Results

The mean likelihood of attending a DMHS was 5.8 (SD 3.3, median 6, moderate likelihood) and 21%, 26% and 23% of men rated likelihood as moderate, high and very high respectively. Being happy with their existing doctor was the most common reason (52%) for being less likely to attend a DMHS. In unadjusted analyses, younger men reported being more likely to attend a DMHS (p < 0.001) with older-sick men reporting being least likely (p < 0.001). Younger men were more likely than older men to score higher on delay/avoidance and were more likely to self-monitor. In the full model, men with current health concerns (p ≤ 0.01), who scored higher on delay/avoidance (p ≤ 0.0006), who were more likely to be information-seekers (p < 0.0001) and/or were motivated to change their health (p ≤ 0.0001) reported a higher likelihood of attending a DMHS irrespective of age and health status.

Conclusions

Seventy percent of men reported a moderate or higher likelihood of attending a DMHS. As young healthy men are more likely than older men to display health behaviours that are associated with a higher likelihood of attending a DHMS, such as delay/avoidance, marketing a DMHS to such men may be of value.

Electronic supplementary material

The online version of this article (10.1186/s12889-018-5992-6) contains supplementary material, which is available to authorized users.

Diagnostic test accuracy of self-reported frailty screening instruments in identifying community-dwelling older people at risk of frailty and pre-frailty: a systematic review protocol

REVIEW QUESTION/OBJECTIVE

The question of this systematic review is: What is the diagnostic test accuracy of self-reported frailty screening instruments among community-dwelling older people against any of the following reference standard tests: the frailty phenotype, frailty index and comprehensive geriatric assessment?

Nutritional interventions for optimizing healthy body composition in older adults in the community: an umbrella review of systematic reviews

BACKGROUND

Optimizing body composition for healthy aging in the community is a significant challenge. There are a number of potential interventions available for older people to support both weight gain (for those who are underweight) and weight loss (for overweight or obese people). While the benefits of weight gain for underweight people are generally clearly defined, the value of weight loss in overweight or obese people is less clear, particularly for older people.

OBJECTIVES

This umbrella review aimed to measure the effectiveness of nutritional interventions for optimizing healthy body composition in older adults living in the community and to explore theirqualitative perceptions.

INCLUSION CRITERIA TYPES OF PARTICIPANTS

The participants were older adults, 60 years of age or older, living in the community.

TYPES OF INTERVENTIONS

The review examinedsix types of nutritional interventions: (i) dietary programs, (ii) nutritional supplements, (iii) meal replacements, (iv) food groups, (v) food delivery support and eating behavior, and (vi) nutritional counselling or education.

TYPES OF STUDIES

This umbrella review considered any quantitative systematic reviews and meta-analyses of effectiveness, or qualitative systematic reviews, or a combination (i.e. comprehensive reviews).

TYPES OF OUTCOMES

The quantitative outcome measures of body composition were: (i) nutritional status (e.g. proportion of overweight or underweight patients); (ii) fat mass (kg), (iii) lean mass or muscle mass (kg), (iv) weight (kg) or BMI (kg/m), (v) bone mass (kg) or bone measures such as bone mineral density, and (vi) hydration status.

PHENOMENA OF INTEREST

The phenomena of interestwere the qualitative perceptions and experiences of participants.

SEARCH STRATEGY

We developed an iterative search strategy for nine bibliometric databases and gray literature.

METHODOLOGICAL QUALITY

Critical appraisal of 13 studies was conducted independently in pairs using standard Joanna Briggs Institute tools. Six medium quality and seven high quality studies were identified.

DATA EXTRACTION

Data was extracted independently in pairs from all 13 included studies using the standard Joanna Briggs Institute data extraction tool.

DATA SUMMARY

Only quantitative studies of effectiveness were included. The strength of evidence assessing the effectiveness of interventionswas graded using a traffic light system (green, amber, red). An overall assessment of the quality of the evidence for each comparison was undertaken.

RESULTS

More systematic reviews investigating weight gain than those investigating weight loss were included. Studies onweight gain showed improved body composition for oral nutritional supplements on its own, for oral nutritional supplements in combination with resistance exercise training, and for oral nutritional supplements in combination with nutrition counselling. Studies on weight loss showed that diet in combination with exercise, diet in combination with exercise and nutrition counselling, and nutrition counselling on its own all can lead to reduced weight in older people. The outcomes of lean mass and weight/BMI were responsive to nutritional interventions, but fat mass did not vary. There were no qualitative reviews identified.

CONCLUSIONS

Although effective interventions for weight gain and weight loss to optimize body composition of older people in the community were identified,making long term, clinically relevant changes in body composition is difficult. Multiple interventions are more effective than single interventions.

Morphological, functional and neurological outcomes of craniectomy versus cranial vault remodeling for isolated nonsyndromic synostosis of the sagittal suture: a systematic review

BACKGROUND

Craniosynostosis is a condition characterized by the premature closure of one or more of the cranial vault sutures. It can occur alone or in association with other congenital defects and may be part of a syndrome. The sagittal suture is most commonly affected, comprising 40-60% of cases. Premature fusion of the sagittal suture can cause scaphocephaly due to compensatory anterior-posterior growth of the skull. This is morphologically considered as a narrow elongated skull with a decreased cephalic index, and is diagnosed clinically and/or radiologically. Both the indications for surgery and the techniques used have varied with time and location. Surgical techniques have evolved, from limited craniectomy to calvarial remodeling. In recent times a return to craniectomy methods has occurred with the more recent introduction of endoscopic methods.

OBJECTIVES

The objectives of this review were to identify and synthesize the best available evidence on the morphological, functional and neurological outcomes of craniectomy compared to cranial vault remodeling.

INCLUSION CRITERIA

This review considered studies of infants with primary isolated sagittal synostosis operated on or before the mean age of 24 months. The intervention of interest was local craniectomy and this was compared to cranial vault remodeling. Morphological (primary), functional and neurological (secondary) outcomes were included. Mortality, complications and aesthetic outcome were included as tertiary outcomes.

METHODS

A comprehensive search was undertaken across major databases. The retrieved studies were assessed by two independent reviewers for methodological validity prior to inclusion. Data was then extracted and, where possible, pooled in statistical meta-analysis. For descriptive studies, where statistical pooling was not possible, the findings are presented in narrative form.

RESULTS

Search and retrieval: Based on critical appraisal, 27 studies were considered to be suitable for this review. These studies were all descriptive in nature. Meta-analysis was only possible for the primary morphological outcome (post-operative cephalic index).Morphological (cephalic index):At one year follow-up, post-operatively remodeling offers an advantage over craniectomy (Z = 4.16, P<0.0001)Morphological:Improvements of the cephalic index to varying degrees were seen in patients receiving either procedure and there is not enough evidence to suggest that either treatment group had greater improvement over the other.Functional and neurological:Although their global scores may be comparable to an age-matched population, patients with sagittal synostosis who have undergone a surgical repair of any type may have discrepancies in specific domains and may be at risk of developing learning disorders. There is insufficient primary research with inter-procedure comparisons of preoperative and postoperative cognitive and neurological outcomes.Tertiary outcomes:There is not enough evidence to comment on mortality or postoperative infection in either treatment group. Patients undergoing cranial vault remodeling have a higher rate of transfusion compared to those undergoing craniectomy; however, it is likely that this difference relates to elective transfusion based on hospital-specific protocols. It remains unknown whether there is an inherently higher need for transfusion in patients undergoing remodeling procedures. Delaying surgery however may increase the risk of raised intracranial pressure (ICP) and its associated complications. Whilst there is no evidence for raised ICP post-craniectomy, a few studies have shown raised ICP in patients post-remodeling. There is not enough evidence to establish a relationship between both procedures and raised ICP. Aesthetic outcome appears to be "better" in patients who undergo remodeling; however, there is little rigorous evidence to support this hypothesis.

CONCLUSIONS

Conclusions were drawn from both the meta-analysis and the narrative results.When comparing the mean change in cephalic index one year after surgery, remodeling was shown to be superior to limited craniectomy in patients with isolated synostosis of the sagittal suture. However both procedures were seen to give improvements at short, medium and longer term time points. Improvements in cephalic index may be sustained, deteriorate or improve over time; based on the current data neither procedure offers a clear long-term advantage over the other. Longer follow-up is required to compare outcomes at different time points.Patients who have surgery (any type) for isolated sagittal synostosis may have deficiencies in different subdomains at later school-age testing, whilst maintaining an age-appropriate global intelligence quotient (IQ) and school performance. There is no evidence to suggest that surgery of either type imparts any benefit in terms of functional or neurological outcomes.There is no evidence to suggest that surgery of either type imparts any benefit in terms of functional or neurological outcomes. While school performance and general IQ may be comparable to age-matched controls, patients with sagittal synostosis who have undergone surgical repair of any type may be at risk of deficiencies in sub-areas of testing and be at risk of learning disorders.There is insufficient evidence regarding mortality, infection, postoperative ICP and aesthetic outcome. While transfusion rates were greater in the remodeling group, this may be due to higher rates of elective transfusion.The inconclusive findings indicate an ongoing need for higher quality primary research comparing the morphological and functional outcomes of craniectomy and cranial vault remodeling in primary sagittal synostosis. Outcomes should be measured in both the short and long term.

Patient safety problems from healthcare information technology in medical imaging

Health information technology (HIT) systems have been deployed extensively by healthcare organizations and promoted as a panacea to many of the challenges faced by medical imaging departments, particularly with respect to workflow, efficiency and diagnostic accuracy. This report describes how inadequate planning, integration, training and testing of HIT can impact on patient safety and result in patient harm.

Knowledge translation in health care: a concept analysis

BACKGROUND

Although knowledge translation is one of the most widely used concepts in health and medical literature, there is a sense of ambiguity and confusion over its definition. The aim of this paper is to clarify the characteristics of KT. This will assist the theoretical development of it and shape its implementation into the health care system Methods: Walker and Avant's framework was used to analyze the concept and the related literature published between 2000 and 2010 was reviewed. A total of 112 papers were analyzed.

RESULTS

Review of the literature showed that "KT is a process" and "implementing refined knowledge into a participatory context through a set of challenging activities" are the characteristics of KT. Moreover, to occur successfully, KT needs some necessary antecedents like an integrated source of knowledge, a receptive context, and preparedness. The main consequence of successful process is a change in four fields of healthcare, i.e. quality of patient care, professional practice, health system, and community. In addition, this study revealed some empirical referents which are helpful to evaluate the process.

CONCLUSION

By aiming to portray a clear picture of KT, we highlighted its attributes, antecedents, consequences and empirical referents. Identifying the characteristics of this concept may resolve the existing ambiguities in its definition and boundaries thereby facilitate distinction from similar concepts. In addition, these findings can be used as a knowledge infrastructure for developing the KT-related models, theories, or tools.

The prevention and reduction of weight loss in an acute tertiary care setting: protocol for a pragmatic stepped wedge randomised cluster trial (the PRoWL project)

Background

Malnutrition, with accompanying weight loss, is an unnecessary risk in hospitalised persons and often remains poorly recognised and managed. The study aims to evaluate a hospital-wide multifaceted intervention co-facilitated by clinical nurses and dietitians addressing the nutritional care of patients, particularly those at risk of malnutrition. Using the best available evidence on reducing and preventing unplanned weight loss, the intervention (introducing universal nutritional screening; the provision of oral nutritional supplements; and providing red trays and additional support for patients in need of feeding) will be introduced by local ward teams in a phased way in a large tertiary acute care hospital.

Methods/Design

A pragmatic stepped wedge randomised cluster trial with repeated cross section design will be conducted. The unit of randomisation is the ward, with allocation by a random numbers table. Four groups of wards (n = 6 for three groups, n = 7 for one group) will be randomly allocated to each intervention time point over the trial. Two trained local facilitators (a nurse and dietitian for each group) will introduce the intervention. The primary outcome measure is change in patient’s body weight, secondary patient outcomes are: length of stay, all-cause mortality, discharge destinations, readmission rates and ED presentations. Patient outcomes will be measured on one ward per group, with 20 patients measured per ward per time period by an unblinded researcher. Including baseline, measurements will be conducted at five time periods. Staff perspectives on the context of care will be measured with the Alberta Context Tool.

Discussion

Unplanned and unwanted weight loss in hospital is common. Despite the evidence and growing concern about hospital nutrition there are very few evaluations of system-wide nutritional implementation programs. This project will test the implementation of a nutritional intervention across one hospital system using a staged approach, which will allow sequential rolling out of facilitation and project support. This project is one of the first evidence implementation projects to use the stepped wedge design in acute care and we will therefore be testing the appropriateness of the stepped wedge design to evaluate such interventions.

Trial registration

ACTRN12611000020987

Failures in transition: learning from incidents relating to clinical handover in acute care

The appropriate handover of patients, whereby responsibility and accountability of care is transferred between healthcare providers, is a critical component of quality healthcare delivery. This paper examines data from recent incidents relating to clinical handover in acute care settings, in order to provide a basis for the design and implementation of preventive and corrective strategies. A sample of incidents (n = 459) relating to clinical handover was extracted from an Australian health service's incident reporting system using a manual search function. Incident narratives were subjected to classification according to the system safety and quality concepts of failure type, error type, and failure detection mechanism. The most prevalent failure types associated with clinical handover were those relating to the transfer of patients without adequate handover 28.8% (n = 132), omissions of critical information about the patient's condition 19.2% (n = 88), and omissions of critical information about the patient's care plan during the handover process 14.2% (n = 65). The most prevalent failure detection mechanisms were those of expectation mismatch 35.7% (n = 174), clinical mismatch 26.9% (n = 127), and mismatch with other documentation 24.0% (n = 117). The findings suggest the need for a structured approach to handover with a recording of standardized sets of information to ensure that critical components are not omitted. Limitations of existing reporting processes are also highlighted.

Mapping the limits of safety reporting systems in health care--what lessons can we actually learn?

OBJECTIVES

To assess the utility of Australian health care incident reporting systems and determine the depth of information available within a typical system.

DESIGN AND SETTING

Incidents relating to patient misidentification occurring between 2004 and 2008 were selected from a sample extracted from a number of Australian health services' incident reporting systems using a manual search function.

MAIN OUTCOME MEASURES

Incident type, aetiology (error type) and recovery (error-detection mechanism). Analyses were performed to determine category saturation.

RESULTS

All 487 selected incidents could be classified according to incident type. The most prevalent incident type was medication being administered to the wrong patient (25.7%, 125), followed by incidents where a procedure was performed on the wrong patient (15.2%, 74) and incidents where an order for pathology or medical imaging was mislabelled (7.0%, 34). Category saturation was achieved quickly, with about half the total number of incident types identified in the first 13.5% of the incidents. All 43 incident types were classified within 76.2% of the dataset. Fifty-two incident reports (10.7%) included sufficient information to classify specific incident aetiology, and 288 reports (59.1%) had sufficient detailed information to classify a specific incident recovery mechanism.

CONCLUSIONS

Incident reporting systems enable the classification of the surface features of an incident and identify common incident types. However, current systems provide little useful information on the underlying aetiology or incident recovery functions. Our study highlights several limitations of incident reporting systems, and provides guidance for improving the use of such systems in quality and safety improvement.

Hospital nurse staffing models and patient and staff-related outcomes

BACKGROUND

Nurse staffing interventions have been introduced across countries in recent years in response to changing patient requirements, developments in patient care, and shortages of qualified nursing staff. These include changes in skill mix, grade mix or qualification mix, staffing levels, nursing shifts or nurses' work patterns. Nurse staffing has been closely linked to patient outcomes, organisational outcomes such as costs, and staff-related outcomes.

OBJECTIVES

Our aim was to explore the effect of hospital nurse staffing models on patient and staff-related outcomes.

SEARCH STRATEGY

We searched the following databases from inception through to May 2009: Cochrane/EPOC resources (DARE, CENTRAL, the EPOC Specialised Register), PubMed, EMBASE, CINAHL Plus, CAB Health, Virginia Henderson International Nursing Library, the Joanna Briggs Institute database, the British Library, international theses databases, as well as generic search engines.

SELECTION CRITERIA

Randomised control trials, controlled clinical trials, controlled before and after studies and interrupted time series analyses of interventions relating to hospital nurse staffing models. Participants were patients and nursing staff working in hospital settings. We included any objective measure of patient or staff-related outcome.

DATA COLLECTION AND ANALYSIS

Seven reviewers working in pairs independently extracted data from each potentially relevant study and assessed risk of bias.

MAIN RESULTS

We identified 6,202 studies that were potentially relevant to our review. Following detailed examination of each study, we included 15 studies in the review. Despite the number of studies conducted on this topic, the quality of evidence overall was very limited. We found no evidence that the addition of specialist nurses to nursing staff reduces patient death rates, attendance at the emergency department, or readmission rates, but it is likely to result in shorter patient hospital stays, and reductions in pressure ulcers. The evidence in relation to the impact of replacing Registered Nurses with unqualified nursing assistants on patient outcomes is very limited. However, it is suggested that specialist support staff, such as dietary assistants, may have an important impact on patient outcomes. Self-scheduling and primary nursing may reduce staff turnover. The introduction of team midwifery (versus standard care) may reduce medical procedures in labour and result in a shorter length of stay without compromising maternal or perinatal safety. We found no eligible studies of educational interventions, grade mix interventions, or staffing levels and therefore we are unable to draw conclusions in relation to these interventions.

AUTHORS' CONCLUSIONS

The findings suggest interventions relating to hospital nurse staffing models may improve some patient outcomes, particularly the addition of specialist nursing and specialist support roles to the nursing workforce. Interventions relating to hospital nurse staffing models may also improve staff-related outcomes, particularly the introduction of primary nursing and self-scheduling. However, these findings should be treated with extreme caution due to the limited evidence available from the research conducted to date.

Where failures occur in the imaging care cycle: lessons from the radiology events register

Adverse events contribute to significant patient morbidity and mortality on a global scale, and this has been documented in a number of international studies. Despite this, there is limited understanding of medical imaging's involvement in such events. Incident reporting is a key feature of high-reliability organizations because, understandably, it is essential to know where things go wrong and why as the very first step in formulating preventative and corrective strategies. Although anesthesiology has led the way, health care in general has been slow to adopt this technique, and this includes medical imaging. Knowledge as to where medical imaging incidents are initiated and detected, and why, is not well documented or appreciated, although this is critical information in relation to quality improvement. Using an online radiology reporting system, the authors therefore sought to gain further insight and also ascertain where failures are located in the imaging cycle, and whether different incidents sources provide different information. Last, the authors sought to examine the resilience of the imaging system using these incident data.

Measuring the context of care in an Australian acute care hospital: a nurse survey

BACKGROUND

This study set out to achieve three objectives: to test the application of a context assessment tool in an acute hospital in South Australia; to use the tool to compare context in wards that had undergone an evidence implementation process with control wards; and finally to test for relationships between demographic variables (in particular experience) of nurses being studied (n = 422) with the dimensions of context.

METHODS

The Alberta Context Tool (ACT) was administered to all nursing staff on six control and six intervention wards. A total of 217 (62%) were returned (67% from the intervention wards and 56% from control wards). Data were analysed using Stata (v9). The effect of the intervention was analysed using nested (hierarchical) analysis of variance; relationships between nurses' experience and context was examined using canonical correlation analysis.

RESULTS

Results confirmed the adaptation and fit of the ACT to one acute care setting in South Australia. There was no difference in context scores between control and intervention wards. However, the tool identified significant variation between wards in many of the dimensions of context. Though significant, the relationship between nurses' experience and context was weak, suggesting that at the level of the individual nurse, few factors are related to context.

CONCLUSIONS

Variables operating at the level of the individual showed little relationship with context. However, the study indicated that some dimensions of context (e.g., leadership, culture) vary at the ward level, whereas others (e.g., structural and electronic resources) do not. The ACT also raised a number of interesting speculative hypotheses around the relationship between a measure of context and the capability and capacity of staff to influence it.We propose that context be considered to be dependent on ward- and hospital-level factors. Additionally, questions need to be considered about the unit of measurement of context in studies of knowledge implementation--is individual (micro), ward (meso) or hospital-level (macro) data most appropriate? The preliminary results also raise questions about how best to utilise this instrument in knowledge translation research.

Teams communicating through STEPPS

OBJECTIVE

To evaluate the effectiveness of the implementation of a TeamSTEPPS (Team Strategies and Tools to Enhance Performance and Patient Safety) program at an Australian mental health facility.

DESIGN, SETTING AND PARTICIPANTS

TeamSTEPPS is an evidence-based teamwork training system developed in the United States. Five health care sites in South Australia implemented TeamSTEPPS using a train-the-trainer model over an 8-month intervention period commencing January 2008 and concluding September 2008. A team of senior clinical staff was formed at each site to drive the improvement process. Independent researchers used direct observation and questionnaire surveys to evaluate the effectiveness of the implementation in three outcome areas: observed team behaviours; staff attitudes and opinions; and clinical performance and outcome. The results reported here focus on one site, an inpatient mental health facility.

MAIN OUTCOME MEASURES

Team knowledge, skills and attitudes; patient safety culture; incident reporting rates; seclusion rates; observation for the frequency of use of TeamSTEPPS tools.

RESULTS

Outcomes included restructuring of multidisciplinary meetings and the introduction of structured communication tools. The evaluation of patient safety culture and of staff knowledge, skills and attitudes (KSA) to teamwork and communication indicated a significant improvement in two dimensions of patient safety culture (frequency of event reporting, and organisational learning) and a 6.8% increase in the total KSA score. Clinical outcomes included reduced rates of seclusion.

CONCLUSION

TeamSTEPPS implementation had a substantial impact on patient safety culture, teamwork and communication at an Australian mental health facility. It encouraged a culture of learning from patient safety incidents and making continuous improvements.

Energetics of bluetongue lizards (Tiliqua scincoides) in a seasonal tropical environment

We studied the physiological ecology of bluetongue lizards (Tiliqua scincoides) on the Adelaide River floodplain in tropical Australia to determine the seasonal patterns of energy expenditure and to determine the mechanisms by which seasonal differences were achieved. Field metabolic rates (FMR) were significantly lower in the dry season (37.6 kJ kg(-1) day(-1); n=9) than in the wet (127.3 kJ kg(-1) day(-1); n=7). Water flux was also lower in the dry season (6.8 ml kg(-1) day(-1); n=9) than in the wet (39.4 ml kg(-1) day(-1); n=7). Measurements of body temperatures (T(b)) and movements of free-ranging animals, and standard metabolic rate (SMR) of recently caught animals, allowed a detailed analysis of energy budgets for wet and dry seasons. In the dry, bluetongue lizards expended 90 kJ kg(-1) day(-1) less energy than in the wet season. Unlike some other lizards of the wet-dry tropics, SMR did not differ between seasons. About 5% of the seasonal difference in FMR was due to lower night time T(b) during the dry season, and about 7% was due to lower diurnal T(b). The remaining 88% of the decrease in energy expended in the dry season was due to a substantial decrease in other costs that may include reproduction, growth, digestion and activity. If we assume the animals fed daily and the costs of digestion are taken into account, the estimates are: 14% of the savings result from lower T(b) at night, 20% from lower T(b) in the day, and 66% result from decreased activity. It is therefore apparent that, unlike some agamid and varanid lizards that use a combination of behavioural and physiological mechanisms to conserve energy when food and water are limited, bluetongue lizards primarily use behavioural mechanisms to achieve a dramatic reduction in energy expenditure in the dry season.

The respiratory system in varanid lizards: determinants of O(2) transfer

Varanids in general exhibit greater aerobic capacities than other lizards. In a similar approach to the extensive investigations undertaken in mammals, the respiratory system in varanids is examined in terms of oxygen transfer from the air to the blood during rest and sustained locomotory activity. The parameters controlling the transfer of O(2) through the various steps of the respiratory system are appropriate to meet the maximum demands for oxygen with one possible exception, circulatory convection. Ventilatory convection is maintained during maximal aerobic locomotion ensuring adequate pulmonary ventilation and the protection of alveolar P(O(2)). Little evidence exists to indicate a mechanically imposed constraint to breathe and the possibility of a gular pump acting to assist ventilation, as a general feature of varanids remains to be determined. Alterations in the relative contributions of the ventilation-perfusion ratio, pulmonary diffusion, diffusion equilibrium and right-left shunts preserved the alveolar-arterial P(O(2)) difference, ensuring that arterial oxygenation was maintained. In those species where increases in cardiac output were limited, maximum O(2) transfer was achieved through increased extraction of oxygen at the tissues. Overall, the interrelationship of adjacent steps in the respiratory system ensures that one step cannot become limiting. Compensatory changes occur in various parameters to offset those parameters that are 'limited'. The high aerobic activity of varanid lizards would not be achievable without a compensated circulatory convection.

Energetic consequences of metabolic depression in tropical and temperate-zone lizards

One response of ectothermic animals to periods of inactivity is inverse acclimation, or metabolic depression, which results in the conservation of energy. Most studies of metabolic depression and acclimation have involved temperate-zone species, and the information from tropical species has been largely restricted to laboratory studies that failed to demonstrate thermal acclimation of metabolism. Recently, metabolic depression has been shown in several species of reptiles from the wet-dry tropics of northern Australia during the dry season. We review existing data on the energy budgets of temperate and tropical species during periods of inactivity and make calculations of energy saved due to metabolic depression across a range of temperatures. Because tropical species experience relatively high temperatures during periods of inactivity, they have a greater potential for energy savings, any enhancement of their metabolic depression is disproportionately advantageous with respect to energy savings, and in some species metabolic depression is probably essential for survival. Thus, we would expect metabolic depression to be well developed in some tropical reptiles. The lack of thermal acclimation in laboratory studies indicates that environmental parameters other than temperature (such as food or water) may initiate metabolic depression in tropical species. Higher temperatures, however, magnify the energy savings accomplished by metabolic depression.

Comparative analysis of protein content in rat mesenteric tissue, peritoneal fluid, and plasma

Albumin, transferrin, and total protein concentrations were measured in the mesenteric tissue, peritoneal fluid, and plasma of 12 ketamine-Nembutal-anesthetized Sprague-Dawley rats. Tissue samples were obtained with an 8-mm trephine; tissue water content was determined by a microgravimetric method to be 5.2 +/- 0.3 microgram water/microgram dry wt. Peritoneal fluid was collected by capillary action in hematocrit tubes, and blood samples were taken from a femoral artery catheter. Total protein concentrations of plasma (5.8 +/- 0.3 g/dl) and peritoneal fluid (2.6 +/- 0.1 g/dl) were determined by Lowry assay. Ratios of peritoneal fluid and tissue densitogram areas to plasma area were used to calculate total protein content of peritoneal fluid (2.5 +/- 0.1 g/dl) and tissue (1.8 +/- 0.2 g/dl). Albumin concentrations were 1.1 +/- 0.1 g/dl for tissue, 1.4 +/- 0.1 g/dl for peritoneal fluid, and 2.8 +/- 0.1 g/dl for plasma. Transferrin concentrations were 0.09 +/- 0.01 g/dl for tissue, 0.13 +/- 0.01 g/dl for peritoneal fluid, and 0.28 +/- 0.01 g/dl for plasma. Peritoneal fluid protein concentrations were similar to values found for lymph in previous studies. Protein concentration in the tissue buttons was significantly less than that of peritoneal fluid. This contradicts the widely held assumption that the protein concentration of fluid outside the matrix is representative of a well-mixed interstitial matrix fluid protein concentration.

Synthesis of social surveys on noise annoyance

Since noise was first recognized as a serious environmental pollutant, a number of social surveys have been conducted in order to assess the magnitude of the problem and to develop suitable noise ratings, such that, from a measurement of certain physical characteristics of community noise, one could reliably predict the community's subjective response to the noise. Recently, the author has reviewed the data from social surveys concerning the noise of aircraft, street traffic, expressway traffic, and railroads. Going back to the original published data, the various survey noise ratings were translated to day-night average sound level, and an independent judgment was make, where choice was possible, as to which respondents should be counted as "highly annoyed." The results of 11 of these surveys show a remarkable consistency. It is proposed that the average of these curves is the best currently available relationship for predicting community annoyance due to transportation noise of all kinds.