Australasian Triage Scale Category Research Articles

Characteristics and outcomes of emergency department presentations brought in by police with and without an emergency examination authority: A state-wide cohort study

BackgroundThe aim of this study was to describe and compare the demographic characteristics, clinical characteristics and patient and health service outcomes of emergency department (ED) presentations brought in by police with and without an emergency examination authority. MethodsA retrospective cohort study of adult (≥ 18 years old) presentations brought in by police to EDs in Queensland, Australia from 01 January 2018 to 31 December 2020. Routinely collected ED data were used to describe and compare the demographic characteristics, clinical characteristics, and outcomes of people brought in by police with and without an emergency examination authority. ResultsA total of 42 502 adult ED presentations were brought in by police over the three-year period, of which 22 981 (44.7%) had an emergency examination authority. Compared with presentations brought in by police without an emergency examination authority, those brought in by police with an emergency examination authority had a higher proportion of presentations for mental health problems, were from major cities, and were allocated more urgent Australasian Triage Scale categories. Presentations brought in by police with an emergency examination authority were less likely to be seen within their Australasian Triage Scale timeframe and experienced a longer length of stay than those brought in by police without an emergency examination authority whether admitted (217 mins vs. 186 mins, p < 0.001) or discharged (212 mins vs. 97 mins, p < 0.001). ConclusionsThe characteristics and outcomes of people brought in by police with emergency examination authorities differed to those brought in by police without emergency examination authorities. Further research is required to enhance understanding of this relatively unexplored group of people and foster interagency collaborations.

Critically Ill Children in a Swiss Pediatric Emergency Department With an Interdisciplinary Approach: A Prospective Cohort Study.

Objective: Delivery of prompt and adequate care for critically ill and injured children presenting to the pediatric emergency department (PED) is paramount for optimal outcomes. Knowledge of the local epidemiology, patient profile, and presentation modes are key for organizational planning, staff education strategy, and optimal care in a PED. Our aim was to analyze the profile of critically ill and injured children admitted to a tertiary, non-academic Swiss PED, to investigate potential risk factors associated with admission to the pediatric intensive care unit (PICU), and the outcomes mortality and PICU admission.Methods: Prospective cohort study of critically ill and injured children presenting to the PED over a two-year period (2018–2019). Inclusion criteria were Australasian triage scale category (ATS) 1, trauma team activation (TTA), medical emergency response (MER) activation, additional critical care consult, and transfer to an outside hospital.Results: Of 42,579 visits during the two-year period, 347 presentations matched the inclusion criteria (0.81%). Leading presentations were central nervous system (CNS) disorders (26.2%), trauma (25.1%), and respiratory emergencies (24.2%). 288 out of 347 cases (83%) arrived during the day or evening with an even distribution over the days of the week. 128 out of 347 (37%) arrived unexpectedly as walk-ins. 233 (67.15%) were ATS category 1. 51% of the cohort was admitted to PICU. Australasian triage scale category 1 was significantly more common in this group (p = 0.0001). Infants with respiratory disease had an increased risk of PICU transfer compared to other age groups (OR 4.18 [95%CI 2.46, 7.09] p = 0.0001), and this age group presented mainly as walk-in (p = 0.0001). Pediatric intensive care unit admissions had a longer hospital stay (4 [2, 8] days vs. 2 [1, 4] days, p = 0.0001) compared to other patients. 0.045% of all PED patients had to be transferred out. Three deaths (0.86%) occurred in the PED, 10 patients died in the PICU (2.9%).Conclusions: High acuity presentations in the PED were rare, more likely to be young with CNS disorders, trauma and respiratory diseases. A significant proportion were unexpected walk-in presentations, mainly during day and evening shifts. Low exposure to high-acuity patients highlights the importance of deliberate learning and simulation for all professionals in the PED.

Idle peripheral intravenous cannulation: an observational cohort study of pre-hospital and emergency department practices

BackgroundUnused ('idle') peripheral intravenous catheters (PIVC) are those not used within 24 hours of insertion. There is little data on cannulation practices and idle PIVC rates in emergency settings, especially the pre-hospital environment.MethodsThis was an observational cohort study set in south-east Queensland, Australia using data from a large tertiary level emergency department (ED) and the local statutory ambulance service. Demographic, clinical and PIVC data were collected over two periods; 9 February–18 March 2017 and 5 January–4 February 2018. Adult patients were included if they were allocated an Australasian triage scale (ATS) category between 2 and 5, and had a PIVC inserted in the pre-hospital setting or ED. PIVC use was defined as idle if no fluids, medications or contrast were administered intravenously within 24 hours of insertion. Comparisons between pre-hospital and ED practice and idle PIVC status were undertaken using descriptive statistics and logistic regression.ResultsA total of 1249 patients with a PIVC (372 pre-hospital; 877 ED) were included. Overall, 366 PIVCs (29.3%; 95% CI 26.9%–31.9%) remained idle at 24 hours. In the pre-hospital group, 147 (39.5%) PIVCs inserted were not used pre-hospital, and 74 (19.9%) remained idle. In comparison, 292 (33.3%) PIVCs placed in the ED remained idle. ED staff more frequently inserted PIVCs in the antecubital fossa than paramedics (65.5% vs. 49.7%), where forearm PIVC insertion was more common pre-hospital than in ED (13.7% vs. 7.4%). Nursing staff inserted idle PIVCs at a rate of (35.1%) compared to doctors (29.6%) and paramedics (19.9%). Having a PIVC inserted in the ED was the only factor significantly (p ≤ .001) predicting an idle outcome (Odds Ratio: 2.4; 95% CI 1.7–3.3).ConclusionOne-third of PIVCs inserted within the emergency setting remained idle, suggesting unnecessary risk and costs. Pre-hospital and ED PIVC insertion practices differed, with idle PIVCs 2.4 times more prevalent if inserted in the ED than pre-hospital and with greater use of antecubital insertion. Reasons for these differences are not well understood and requires more targeted research.

Drug- and alcohol-related emergency department patient presentations during the 2018 Commonwealth Games: A multi-site retrospective analysis.

To examine the impact of the 2018 Commonwealth Games on ED patient presentations related to drug(s) and/or alcohol. Retrospective observational study comparing ED patient presentations made pre, during and post the 2018 Commonwealth Games with either an International Classification of Diseases-10 diagnosis or presenting complaint related to drug and or alcohol misuse. Drug- and alcohol-related presentations accounted for 5% (n = 890) of all ED presentations across the 36-day study period with no significant difference between pre (n = 312), during (n = 301) and post (n = 277) periods (P=0.2). Overall, drug- and alcohol-related patient presentations made to the EDs tended to be young (median age 35 years, interquartile range 24-48), Australian (n = 820, 92%) and male (n = 493, 55%). The majority arrived by ambulance (n = 650, 73%), were allocated an Australasian Triage Scale category of 3 (n = 505, 57%), and arrived between 15.00 and 22.59 hours (n = 365, 41%). No demographic characteristics, ED characteristics or outcomes differed significantly over time. During the 2018 Commonwealth Games, minimal impact on the ED was noted pertaining to drug and alcohol misuse. Further research is required to understand whether this held true for other types of ED presentations and during other types and locations of mass gathering events.

The influence of nurse allocated triage category on the care of patients with sepsis in the emergency department: A retrospective review

Background‘Gold standard’ sepsis care encompasses the recognition and treatment of sepsis within one hour of emergency department (ED) presentation. Early treatment of patients with sepsis reduces mortality. The aim of this study was to examine the effect that the nurse allocated Australasian Triage Scale (ATS) Category allocation had on ED patient treatment for severe sepsis and septic shock. MethodsA two-year retrospective observational cohort study from a single major metropolitan ED, including all patients with severe sepsis or septic shock. ResultsSixty patients were included in this study. Sepsis was recognised at triage for the majority of patients (n=38, 63%), and most were allocated an ATS Category Two (n=39). Almost half of the patients received all elements of the sepsis bundle within one hour of arrival (n=27,45%). Patients allocated an ATS Category One or Two had a shorter time to lactate collection (p=0.003), blood culture procurement (p=0.009) and intravenous antibiotic administration (p=0.021) compared with patients who were allocated ATS Category Three or Four. ConclusionsMost patients presenting with sepsis were recognised by the triage nurse and allocated a high acuity ATS category accordingly. As sepsis is a time-critical condition and a high acuity triage allocation reduces time to treatment, we recommend all Australian EDs should implement a standard approach to sepsis triage by allocating an ATS Category of One or Two to all patients suspected of having sepsis, thus reflecting the urgency of their disease.

Impact of patient isolation on emergency department length of stay: A retrospective cohort study using the Registry for Emergency Care

The number of patients with suspected COVID-19 presenting to Australian EDs continues to impose a burden on healthcare services. Isolation is an important aspect of infection prevention and control, but has been associated with undesirable consequences among hospital inpatients. The aim of the present study was to determine if isolation is associated with an increased length of stay (LOS) in the ED. The Registry for Emergency Care Project is a prospective cohort study with a series of nested sub-studies. The present study was a retrospective analysis of adult patients allocated an Australasian Triage Scale category of 1 or 2 who presented to a tertiary ED between 18 and 31 May 2020. The primary outcome was ED LOS. Regression methods were used to determine the independent association between ED isolation and LOS. There were 447 patients who met inclusion criteria, of which 123 (28%) were managed in isolation. The median (interquartile range) ED LOS was 259 (210-377) min for the isolation group and 204 (126-297) min for the non-isolation group, a difference in median ED LOS of 55 min (P < 0.001). Isolation was independently associated with a 23% increase in ED LOS (P = 0.002) and doubled the odds of an ED stay of more than 4 h (adjusted odds ratio 2.2 [1.4-3.4], P = 0.001). Consistent with the anecdotal experience of Australian ED clinicians, the present study demonstrated an increased ED LOS for patients managed in isolation. Enhanced infection prevention and control precautions will be required during and beyond the current pandemic, creating significant ongoing challenges for emergency care systems.

Predictors of a long length of stay in the emergency department for older people.

Dedicated geriatric models of care are becoming more prevalent due to the complexity of, and increase in, acute healthcare presentations for older patients. For older people, a long stay in the emergency department (ED) may reflect the complexity of their presentation, or deficiencies in systems that manage these complexities. To identify predictors of a long ED length of stay (LLoS) for patients ≥65 years old. Linked hospital information systems data from a large, public Australian ED were analysed in this retrospective cohort study. LLoS was defined as the 75th percentile (617 min). Multivariate regression identified LLoS predictors for admissions and discharges separately. Of 16 791 ED presentations made by older people, 4192 experienced a LLoS; 55% were admitted. Increasing age was associated with an increasing ED LoS. Factors most predictive of LLoS for both admitted and discharged patients included: investigations (both pathology and imaging), less urgent Australasian triage scale categories and after-hours arrival. Ambulance arrival did not increase the risk of a LLoS for patients eventually admitted, but conferred nearly a twofold increased risk for a LLoS for discharged older persons (adjusted odds ratios = 1.9; 95% confidence interval 1.5-2.4). This study assists clinicians and decision-makers to identify reasons why older persons have a LLoS, whether admitted or discharged. Interventions to streamline care for older patients arriving after-hours and who require imaging and pathology are required. LoS targets should consider age distribution. The use of ED LoS as a quality of care indicator should be assessed for admissions and discharges, separately.

Peripheral intravenous cannula insertion and use in a tertiary hospital emergency department: A cross-sectional study

IntroductionPeripheral intravenous cannula is often a first line invasive intervention for patients in the emergency department. It is used to facilitate blood sampling, deliver essential fluids, blood products and medication. However, the insertion and use of the peripheral intravenous cannula is not without complication. This study surveyed the number of peripheral intravenous cannulas inserted in the emergency department and identify the level of and reason for use. MethodsA cross-sectional study was conducted in the emergency department of a large tertiary hospital in Queensland. Descriptive and inferential statistics were used to describe peripheral intravenous cannula use and to explore associations. ResultsOf the 224 patients assessed, 159 (71%) had at least one peripheral intravenous cannula inserted in emergency department. Of the 159 peripheral intravenous cannulas inserted, 54 (34%) remained unused while the patient was in the emergency department. For patients classified as Australasian Triage Scale categories 3, 4 and 5, 40% of peripheral intravenous cannulas remained unused. Overall, poor documentation was observed with 29% of peripheral intravenous cannulas insertions not documented at all. ConclusionThis study identified a high proportion of unused peripheral intravenous cannulass in the emergency department and inadequate documentation. An intervention to promote best practice, raise awareness of the risks of peripheral intravenous cannulas use, possible alternatives therapies, and improve documentation is required.

Emergency healthcare delivery for young adults during a planned mass gathering: A retrospective observational study.

To describe patient presentation characteristics and outcomes for people aged 16-18 years pre, during and post a planned youth mass gathering event (MGE): 'Schoolies week' on the Gold Coast, Queensland, Australia. This was a retrospective observational study, including patient presentations by all young adults requiring care in the ED or in-event health services (EHS) over a 21-day period in 2014. Data analysis included descriptive and inferential statistics. A total of 1029 patient presentations were made by people aged 16-18 years to the ED and EHS over the 21-day study period (139 pre, 695 during [275 in ED, 420 in EHS], 195 post Schoolies week). Some ED patient characteristics and outcomes varied between the pre, during and post Schoolies periods, such as patients age (P < 0.001), usual place of residence (P < 0.001) and not waiting for treatment (P = 0.015). Of the 24 375 registered MGE attendees, 420 (1.72% [95% confidence interval 1.57-1.89], 17.2/1000) presented for in-event care. Most patients were allocated an Australasian Triage Scale category of 4 (n = 162, 65.6%), with toxicology related presentations (n = 169, 44.9%). Transportation to hospital was undertaken for seven MGE attendees (0.03% [95% confidence interval 0.01-0.06], 0.3/1000). Establishment of an in-event model of care for 1 week during Schoolies served as an effective hospital avoidance strategy for a planned youth MGE. Such in-event models of care may be considered for other similar future MGE.

Are service and patient indicators different in the presence or absence of nurse practitioners? The EDPRAC cohort study of Australian emergency departments

ObjectivesTo evaluate the impact of nurse practitioner (NP) service in Australian public hospital emergency departments (EDs) on service and patient safety and quality indicators.Design and settingCohort study comprising ED presentations...

Nurse-Initiated Acute Stroke Care in Emergency Departments: The Triage, Treatment, and Transfer Implementation Cluster Randomized Controlled Trial.

Background and Purpose- We aimed to evaluate the effectiveness of an intervention to improve triage, treatment, and transfer for patients with acute stroke admitted to the emergency department (ED). Methods- A pragmatic, blinded, multicenter, parallel group, cluster randomized controlled trial was conducted between July 2013 and September 2016 in 26 Australian EDs with stroke units and tPA (tissue-type plasminogen activator) protocols. Hospitals, stratified by state and tPA volume, were randomized 1:1 to intervention or usual care by an independent statistician. Eligible ED patients had acute stroke <48 hours from symptom onset and were admitted to the stroke unit via ED. Our nurse-initiated T3 intervention targeted (1) Triage to Australasian Triage Scale category 1 or 2; (2) Treatment: tPA eligibility screening and appropriate administration; clinical protocols for managing fever, hyperglycemia, and swallowing; (3) prompt (<4 hours) stroke unit Transfer. It was implemented using (1) workshops to identify barriers and solutions; (2) face-to-face, online, and written education; (3) national and local clinical opinion leaders; and (4) email, telephone, and site visit follow-up. Outcomes were assessed at the patient level. Primary outcome: 90-day death or dependency (modified Rankin Scale score of ≥2); secondary outcomes: functional dependency (Barthel Index ≥95), health status (Short Form [36] Health Survey), and ED quality of care (Australasian Triage Scale; monitoring and management of tPA, fever, hyperglycemia, swallowing; prompt transfer). Intention-to-treat analysis adjusted for preintervention outcomes and ED clustering. Patients, outcome assessors, and statisticians were masked to group allocation. Results- Twenty-six EDs (13 intervention and 13 control) recruited 2242 patients (645 preintervention and 1597 postintervention). There were no statistically significant differences at follow-up for 90-day modified Rankin Scale (intervention: n=400 [53.5%]; control n=266 [48.7%]; P=0.24) or secondary outcomes. Conclusions- This evidence-based, theory-informed implementation trial, previously effective in stroke units, did not change patient outcomes or clinician behavior in the complex ED environment. Implementation trials are warranted to evaluate alternative approaches for improving ED stroke care. Clinical Trial Registration- URL: http://www.anzctr.org.au. Unique identifier: ACTRN12614000939695.

Cross-sectional study of emergency department presentation triage categories at Goondiwindi Hospital and their effect on the treatment of acute emergencies.

The objective of this study was to investigate the number and proportion of non-acute presentations to a district hospital emergency department in Goondiwindi, a rural Queensland town, both in the treatment of emergency cases and potential barriers patients have in seeing a medical practitioner in the general practice setting. Occasions of service to Goondiwindi Hospital were collated from administrative records according to Australasian Triage Scale categories and analysed by Student's t-test for monthly variations in triage category presentations. Outpatient clinic (emergency department of a public district hospital). All patients presenting to Goondiwindi Hospital Emergency Department from 1 January 2013 to 30 June 2013. Proportion of high and low triage category presentations in Goondiwindi Hospital during the study period. Triage category 4 and 5 presentations comprised 35.9% (mean = 225 per month) and 44.4% (mean = 278 per month), respectively, of all occasions of service at the Goondiwindi Hospital Emergency Department during this 6 month period. Life-threatening presentations (Triage Category 1 and 2) comprised <5% of all occasions of service at Goondiwindi Hospital. There were statistically insignificant differences between total occasions of service by month of presentation. Although patients of all acuities presented to Goondiwindi Hospital, low-acuity presentations were more common than reported at larger hospitals. Frequent interruptions impairing attention to more urgent tasks were noted at Goondiwindi Hospital, causing delayed treatment of sick patients. Educating the local community in the appropriate use of public health services would help direct more attention to the most ill seeking medical care at rural emergency departments such as Goondiwindi Hospital.

Changing paediatric emergency department model of care is associated with improvements in the National Emergency Access Target and a decrease in inpatient admissions.

To assess the impact on patient flow as noted by the National Emergency Access Target (NEAT), with the introduction of a new Paediatric ED (PEM ED) model of care. This longitudinal observational study was conducted at the Logan Hospital, a 344 bed public hospital in metropolitan Brisbane, which opened a physically separate, dedicated PEM ED on 14 October 2014, incorporating approximately 30% more staff, limited changes in processes and no changes in governance. De-identified data of the entire clientele from the ED Information System were compared 365days before and after the opening of the PEM ED. Although the number of children presenting to ED increased by 23% (pre 18 142, post 22 391), the median length of stay decreased substantially from 152min to 138min, resulting in a 7.75% rise in presentations that met the NEAT target (pre 77.41%, post 85.16%; P<0.0001). Admission to the ED Short Stay Unit rose by 16.48% (pre 5.38%, post 21.86%; P<0.0001), whereas final disposition to the inpatient paediatric unit fell by 2.30% (pre 11.43, post 9.13%; P<0.0001). The clinical presentations were similar pre and post across age, sex, ethnicity, referral and arrival mode, Australasian Triage Scale category, presenting problem and discharge diagnosis. NEAT times improved after changing the PEM ED model of care. Further studies may assist identifying which of the specific features within the new model are most effective for improving patient flow.

Impact of population ageing on growing demand for emergency transportation to emergency departments in Western Australia, 2005–2020

The aim of the present paper is to quantify the impact of population ageing on demand for emergency transportation (ET) to EDs in Western Australia (WA). A population-based longitudinal study using the statewide ED presentation data from 2005-2014 was used to predict ET demand in 2020, stratified by age group and sex. From 2005 to 2014, 14.9% of all ED presentations arrived by ET. The number rose from 94 369 (13.9%) in 2005 to 153 374 (15.5%) in 2014, a compound annual growth of 5.5%. Of those presentations, 55.2% resulted in hospital admission. The proportion was higher in older age groups (64.5% in 65-74years, 67.1% in 75-84years and 68.4% in ≥85years). Of ED presentations arriving by ET in age group ≥65years, 70.9% were Australasian Triage Scale category 1, 2 or 3. The rate of ET per 1000 population increased in all age groups and sex. The highest growth was in the older age groups: from 86.6, 187.0 and 512.1 in ages 65-74years, 75-84years and ≥85years, respectively, in 2005 to 102.5, 226.7 and 613.6 in 2014, and are expected to increase to 115.1, 264.3 and 707.7 by 2020. The ET demands in these age groups were projected to increase annually by 5.0%, 3.6% and 4.9%, respectively, in the next 6years, comparing to less than 4.5% in the younger age groups. There has been a continuous rise in ET demand in WA, particularly in older people who have a higher urgency and requirement for admission.

Effect of a pager notification system on Australasian Triage Scale category 2 patients in a paediatric emergency department.

Australasian EDs have introduced innovative processes to ensure safe and timely management of patients. Our ED introduced a dedicated pager system to provide rapid assessment of Australasian Triage Scale (ATS) category 2 patients in an attempt to expedite ED care. The present paper aims to evaluate the impact of this initiative on time to clinician, ED length of stay (LOS) and clinical outcomes in a tertiary paediatric ED. Retrospective structured chart review on patients presenting in a 2 month period before the intervention (August-September 2009) and the same time 1 year later. Patients were grouped into common ATS category 2 presentations and analysed in these subcategories. Clinical indicators of appropriate and timely performance were selected from best practice performance guidelines. 779 ATS category 2 patients were seen during the two periods: 370 pre-intervention and 409 post-intervention. The overall percentage of ATS category 2 patients seen within the target time increased by 22.3%, although there was no significant change in ED LOS. The median time for patients from triage to being seen by an ED clinician improved from 10 to 6 min (P < 0.01). However, we were unable to demonstrate an impact of the pager system on various clinical quality indicators. The rapid assessment pager system proved beneficial in reducing triage to clinician times for ATS category 2 patients but showed no improvement in overall ED LOS or disease-specific clinical quality indicators. Further research is needed to determine the influence of other components of ED functioning on clinical outcomes, as well as the overall clinical impact a pager system has on other measures of quality such as patient satisfaction and other subgroups of patients.

Selecting cases for feedback to pre-hospital clinicians - a pilot study.

Background There are currently limited avenues for routine feedback from hospitals to pre-hospital clinicians aimed at improvements in clinical practice. Objective The aim of this study was to pilot a method for selectively identifying cases where there was a clinically significant difference between the pre-hospital and in-hospital diagnoses that could have led to a difference in pre-hospital patient care. Methods This was a single-centre retrospective study involving cases randomly selected through informatics extraction of final diagnoses at hospital discharge. Additional data on demographics, triage and diagnoses were extracted by explicit chart review. Blinded groups of pre-hospital and in-hospital clinicians assessed data to detect clinically significant differences between pre-hospital and in-hospital diagnoses. Results Most (96.9%) patients were of Australasian Triage Scale category 1-3 and in-hospital mortality rate was 32.9%. Of 353 cases, 32 (9.1%; 95% CI: 6.1-12.1) were determined by both groups of clinical assessors to have a clinically significant difference between the pre-hospital and final in-hospital diagnoses, with moderate inter-rater reliability (kappa score 0.6, 95% CI: 0.5-0.7). Conclusion A modest proportion of cases demonstrated discordance between the pre-hospital and in-hospital diagnoses. Selective case identification and feedback to pre-hospital services using a combination of informatics extraction and clinician consensus approach can be used to promote ongoing improvements to pre-hospital patient care. What is known about the topic? Highly trained pre-hospital clinicians perform patient assessments and early interventions while transporting patients to healthcare facilities for ongoing management. Feedback is necessary to allow for continual improvements; however, the provision of formal selective feedback regarding diagnostic accuracy from hospitals to pre-hospital clinicians is currently not routine. What does this paper add? For a significant proportion of patients, there is a clinically important difference in the diagnosis recorded by their pre-hospital clinician compared with their final in-hospital diagnosis. These clinically significant differences in diagnoses between pre-hospital and in-hospital clinicians were most notable among acute myocardial infarction and trauma subgroups of patients in this study. What are the implications for practitioners? Identification of patients who have a significant discrepancy between their pre-hospital and in-hospital diagnoses could lead to the development of feedback mechanisms to pre-hospital clinicians. Providing pre-hospital clinicians with this selective feedback would be intended to promote ongoing improvements in pre-hospital assessments and thereby to improve service delivery.

Growth in Western Australian emergency department demand during 2007-2013 is due to people with urgent and complex care needs.

To determine the magnitude and characteristics of the increase in ED demand in Western Australia (WA) from 2007 to 2013. We conducted a population-based longitudinal study examining trends in ED demand, stratified by area of residence, age group, sex, Australasian Triage Scale category and discharge disposition. The outcome measures were annual number and rate of ED presentations. We calculated average annual growth, and age-specific and age-standardised rates. We assessed the statistical significance of trends, overall and within each category, using the Mann-Kendall trend test and analysis of variance ANOVA. We also calculated the proportions of growth in ED demand that were attributable to changes in population and utilisation rate. From 2007 to 2013, ED presentations increased by an average 4.6% annually from 739,742 to 945,244. The rate increased 1.4% from 354.1 to 382.6 per 1000 WA population (P = 0.02 for the trend). The main increase occurred in metropolitan WA, age 45+ years, triage category 2 and 3 and admitted cohorts. Approximately three-quarters of this increase was due to population change (growth and ageing) and one-quarter due to increase in utilisation. Our study reveals a 4.6% annual increase in ED demand in WA in 2007-2013, mostly because of an increase in people with urgent and complex care needs, and not a shift (demand transfer) from primary care. This indicates that a system-wide integrated approach is required for demand management.

Characteristics favouring a delayed disposition decision in the emergency department.

The working hours of a hospital affects efficiency of care within the emergency department (ED). Understanding the influences on ED time intervals is crucial for process redesign to improve ED patient flow. To assess characteristics that affect patients' transit through an ED. Retrospective cohort study from 2004 to 2010 of 268 296 adult patients who presented to the ED of an urban tertiary-referral Australian teaching hospital. After adjustment for Australasian Triage Scale (ATS) category, every decade increase in age meant patients spent an additional 2 min in the ED waiting to be seen (P < 0.001) and an extra 29-min receiving treatment (P < 0.001). For every additional 10 patients in the ED, the 'waiting time' (WT) phase duration increased by 20 min (P < 0.001) and the 'Assessment and Treatment Time' (ATT) phase duration increased by 26 min (P < 0.001). When patients arrived outside working hours, the WT phase duration increased by 20 min (P < 0.001). When seen outside working hours, the ATT phase duration increased by 34.5 min (P < 0.001). Extrinsic to the patients themselves and in addition to ED overcrowding, the working hours of the hospital affected efficiency of care within the ED. Not only should the whole of the hospital be involved in improving efficient and safe transit of patients through an ED, but the whole of the day and every day of the week deserve attention.

Predicting admission of patients by their presentation to the emergency department.

The present study aims to determine the importance of certain factors in predicting the need of hospital admission for a patient in the ED. This is a retrospective observational cohort study between January 2010 and March 2012. The characteristics, including blood test results, of 100,123 patients who presented to the ED of a tertiary referral urban hospital, were incorporated into models using logistic regression in an attempt to predict the likelihood of patients' disposition on leaving the ED. These models were compared with triage nurses' prediction of patient disposition. Patient age, their initial presenting symptoms or diagnosis, Australasian Triage Scale category, mode of arrival, existence of any outside referral, triage time of day and day of the week were significant predictors of the patient's disposition (P < 0.001). The ordering of blood tests for any patient and the extent of abnormality of those tests increased the likelihood of admission. The accuracy of triage nurses' admission prediction was similar to that offered by a model that used the patients' presentation characteristics. The addition of blood tests to that model resulted in only 3% greater accuracy in prediction of patient disposition. Certain characteristics of patients as they present to hospital predict their admission. The accuracy of the triage nurses' prediction for disposition of patients is the same as that afforded by a model constructed from these characteristics. Blood test results improve disposition accuracy only slightly so admission decisions should not always wait for these results.

Is National Emergency Access Target dumbing down emergency physicians?

Is National Emergency Access Target dumbing down emergency physicians?