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As a result of climate change heatwaves are expected to increase in frequency and intensity and will have detrimental impacts on human health globally. EDs are often the critical point of care for acute heat illnesses and other conditions associated with heat exposure. Existing literature has focused on heatwave-related hospitalisation and mortality. This scoping review aimed to identify, evaluate and summarise current literature regarding patient characteristics and outcomes of ED admissions from heatwaves. A scoping review of the literature was conducted using six databases: Medline, EMBASE, EMCARE, CINAHL, PsycINFO, and Scopus, using MeSH terms and keywords related to 'heatwave' and 'Emergency Department'. Articles were included if they were: published in English from January 2000 to August 2021, related to ED, and examined high temperature periods consistent with heatwave criteria. Articles were appraised using the Mixed Methods Appraisal Tool (MMAT). Thirty-one studies were included, mostly from the United States, Australia, and France. The study designs include retrospective case analysis, case-control, and time-series analysis. Eight studies examined known heatwaves, 21 used different criteria to identify heatwave occurrence, and two focused on heat-related illness. The selected articles display a moderate-high quality on MMAT. ED admissions for both heat-related illnesses and other conditions increased during heatwaves, with up to 18.5 times risk increase. The risk was elevated for all population groups, and substantially in the elderly, male patients with certain comorbidities, medications, or lower socioeconomic status. Outcomes including hospitalisation and mortality rates after ED admissions showed positive associations with heatwaves. The heatwaves resulting from climate change will place increasing demands on EDs providing care for increasingly susceptible populations. Significant public heatwave planning across multiple sectors is required to reduce the risk of overwhelming EDs with these patients., (© 2023 The Authors. Emergency Medicine Australasia published by John Wiley & Sons Australia, Ltd on behalf of Australasian College for Emergency Medicine.)

Objective: Using a strength-based framework, we aimed to describe and compare First Nations patients who completed care in an ED to those who took their own leave., Methods: Routinely collected adult patient data from a metropolitan ED collected over a 5-year period were analysed., Results: A total of 6446 presentations of First Nations patients occurred from 2016 to 2020, constituting 3% of ED presentations. Of these, 5589 (87%) patients waited to be seen and 857 (13%) took their own leave. Among patients who took their own leave, 624 (73%) left not seen and 233 (27%) left at own risk after starting treatment. Patients who were assigned a triage category of 4-5 were significantly more likely to take their own leave (adjusted odds ratio [OR] 3.17, 95% confidence interval [CI] 2.67-3.77, P < 0.001). Patients were significantly less likely to take their own leave if they were >60 years (adjusted OR 0.69, 95% CI 1.01-1.36, P = 0.014) and had private health insurance (adjusted OR 0.61, 95% CI 0.45-0.84, P < 0.001). Patients were more likely to leave if they were women (adjusted OR 1.17, 95% CI 1.01-1.36, P = 0.04), had an unknown housing status (adjusted OR 1.76, 95% CI 1.44-2.15, P < 0.001), were homeless (adjusted OR 1.50, 95% CI 1.22-1.93, P < 0.001) or had a safety alert (adjusted OR 1.60, 95% CI 1.35-1.90, P < 0.001)., Conclusion: A lower triage category is a strong predictor of First Nations patients taking their own leave. It has been documented that First Nations patients are under-triaged. One proposed intervention in the metropolitan setting is to introduce practices which expediate the care of First Nations patients. Further qualitative studies with First Nations patients should be undertaken to determine successful approaches to create equitable access to emergency healthcare for this population., (© 2022 The Authors. Emergency Medicine Australasia published by John Wiley & Sons Australia, Ltd on behalf of Australasian College for Emergency Medicine.)

Opioid-related harms have been increasing in Australia over the last 5 years. Patients with opioid use disorder are over-represented in ED presentations. Opioid agonist treatment is the most effective community-based treatment. Buprenorphine is considered the safest of these treatments to use in the ED setting. This rapid review investigated the effectiveness of initiating buprenorphine in the ED setting. Medline, Embase, Emcare, PSYCinfo, CINAHL and Cochrane Central Register of Controlled Trials databases were searched. Randomised and non-randomised studies published in peer-reviewed journals that involved the initiation of buprenorphine in the ED setting were considered eligible. The search revealed 350 articles of which 11 were included in the review; three articles representing two randomised controlled trials (RCTs) and eight observational studies. Data were extracted from included papers and risk of bias assessed on the RCTs. One well-conducted RCT showed that buprenorphine initiated in the ED does improve treatment engagement up to 2 months after an ED visit. Eight observational studies, one with a comparator group reported positive results for this intervention. There is strong evidence that clinicians should consider commencing buprenorphine in the ED for patients with opioid use disorder when combined with a direct and supported referral or 'warm handover' to community care. Further implementation studies and investigation of long-acting injectable buprenorphine treatment are required., (© 2020 Australasian College for Emergency Medicine.)