Update on echocardiography: do we still need a stethoscope?

The focus of this article is to review point-of-care ultrasound (POCUS) of the chest as an adjunct to use of the stethoscope and physical examination. We consider selected evidence supporting POCUS for evaluation of acute dyspnoea and focussed cardiac assessment, explore current and the future directions in POCUS for the generalist physician and review some historical notes on auscultation of the chest and parallels to the evolution of POCUS.

Use of the Theoretical Domains Framework to explore factors influencing paediatric fever management practices and antipyretic use in New Zealand emergency departments.

AIM: To explore factors influencing fever management practices and antipyretic use among New Zealand Emergency Department (ED) doctors and nurses using the Theoretical Domains Framework (TDF). METHODS: Cross-sectional survey of doctors and nurses across 11 New Zealand EDs. The questionnaire examined eight of 12 TDF domains, based on a generic questionnaire validated to assess TDF-based determinants of health-care professional behaviour. Relevant domains were identified by the frequency of beliefs; the presence of conflicting beliefs within a domain; and the likely strength of impact of a belief on paediatric fever management in the ED. RESULTS: About 602 participants (243 doctors, 353 nurses and 6 unknown) completed the survey (response rate 47.5%). Over half (351/591, 59.6%, 95% confidence interval (CI) 55.5-63.5%) knew the content of clinical practice guidelines regarding antipyretic use in febrile children (TDF Domain Knowledge), or had been trained to ensure antipyretics are given to febrile children only if they appear distressed (347/592, 58.6%, 95% CI 54.5-62.6%) (Skills). Over 40% (246/590, 95% CI 37.7-45.8%) aim to reduce the fever before discharge (Goals). Most (444/591, 75.1%, 95% CI 71.4-78.6%) participants felt capable of explaining appropriate antipyretic use to parents/care givers (Beliefs about Capabilities). Only a minority (155/584, 26.5%, 95% CI 23.0-30.3%) thought that they can ensure antipyretics are given to febrile children only if they appear distressed when the ED is busy (Environmental Context and Resources). CONCLUSIONS: Using the TDF, we identified factors influencing fever management practices and antipyretic use in the ED. These factors can guide the design of targeted, theory-informed knowledge translation strategies.

Adenosine/guanosine preferring nucleoside ribohydrolase is a distinct, druggable antitrichomonal target.

Nucleoside salvage pathway enzymes used by Trichomonas vaginalis are distinct from the pathway involved in activation of existing 5-nitroimidazole drugs. They thus represent excellent targets for developing novel, mechanism-based antitrichomonal agents. The purine-specific adenosine/guanosine preferring ribohydrolase (AGNH) was screened against the NIH Clinical Collection to assess its druggability. Eight compounds, including five flavonoids, were identified with IC50 values ⩽10 µM and confirmed in counter screens run in the presence of detergent. The inhibitors are structurally distinct from inhibitors of the pyrimidine-specific uridine ribohydrolase (UNH) thus indicating that AGNH is a distinct, druggable target from UNH.

Point-of-Care Ultrasound in the Evaluation of Pyogenic Flexor Tenosynovitis.

A 4-year-old girl presented to the emergency department for evaluation of finger swelling after a dog bite. Point-of-care ultrasound was used to diagnose pyogenic flexor tenosynovitis of the digit after visualizing a fluid collection within the flexor tendon sheath. The patient underwent emergent incision and drainage of the digit with good outcome.

Incidental Findings on Bedside Ultrasonography: Detection Rate and Accuracy of Resident-Performed Examinations in the Acute Setting.

BACKGROUND: Bedside ultrasonography has become a valuable tool in the emergent care setting for triage and rapid evaluation of patients who are acutely ill. Given the cross-sectional nature of ultrasound technology, incidental findings are frequently encountered during imaging. These can impact clinical management and can pose a diagnostic dilemma for emergency medicine (EM) physicians and EM residents. PURPOSE: Our retrospective study was designed to evaluate the prevalence and detection rate of incidental findings on bedside ultrasound examinations performed by EM residents. We also sought to identify types of incidental findings encountered and the diagnostic accuracy of those findings. MATERIALS AND METHODS: Board-certified radiologists retrospectively reviewed bedside ultrasonography examinations performed and interpreted by EM residents at a large urban academic hospital. Our sample included patients who presented with traumatic and nontraumatic symptoms in the acute setting. Findings were defined as incidental only if they were previously unknown and not related to a patients presenting symptoms. The results were corroborated with electronic medical records and additional pertinent imaging when available. RESULTS: Of 196 examinations analysed, EM residents identified incidental findings on 26% of the studies, which mostly involved the renal and biliary system. Radiologist review detected incidental findings in 20.9% but was more accurate when supplemental imaging was available. EM residents detected incidental findings at rates similar to that published previously and had moderate interobserver agreement with radiologist review. Worrisome and indeterminate findings were confirmed by additional work-up and further imaging. CONCLUSION: Incidental findings are frequently encountered on bedside ultrasonography and have the potential to alter clinical management. Expertise in detection and knowledge of the presence and spectrum of these incidental findings is essential for appropriate triage, patient management, and follow-up.

Image quality and technical limitations in emergency department cardiac point-of-care ultrasound: A retrospective cohort study.

OBJECTIVE: To assess the image quality and common technical limitations seen on cardiac point-of-care ultrasound (POCUS) performed and archived in a single New Zealand ED. METHODS: A retrospective cohort study of clinically indicated cardiac POCUS, archived from 1 October 2019 to 20 May 2020. Archived examinations were retrospectively reviewed by an ED POCUS expert, and an expert cardiac sonographer to determine diagnostic image quality, technical limitations present and opportunities for image quality improvement. Image quality of credentialed examinations was compared to uncredentialed examinations and examinations that were undocumented in the medical record. RESULTS: A total of 211 cardiac POCUS examinations were included. The impact of image quality on diagnostic interpretation was only documented in <2% of examinations. There was no difference in median global image quality scores for uncredentialed and credentialed examinations (8.5 vs 9, P = 0.55) and median score for undocumented examinations (5.5) was lower than credentialed examinations (P < 0.01). Common technical limitations identified were off-axis imaging and artefacts limiting image quality. CONCLUSION: In the present study of clinically indicated cardiac POCUS, low image quality was common but the impact of image quality on diagnostic interpretation was very rarely documented in the medical record. Local quality assurance and training should be directed at credentialed and uncredentialed clinicians including strategies to improve off-axis imaging and managing artefacts where possible. Standardised documentation of image quality that may impact diagnostic accuracy should be encouraged.

Impact of an educational intervention utilising a three-dimensional-printed model for ultrasound-guided intra-articular injections of the dislocated shoulder.

OBJECTIVE: Intra-articular injection of local anaesthetic provides safe and effective analgesia for patients with shoulder dislocation. We designed a three-dimensional-printed ultrasound model of the shoulder to educate ED clinicians on use of this technique. We aimed to evaluate the impact of a 1-h training session using this model on participants' knowledge, skills and clinical practice. METHODS: This was a prospective study of the clinicians working at two EDs in New Zealand. Participants (n = 20) took part in a 1-h educational session. We tested participants' performance before the session, afterwards and at 3 months using a 10-point objective structured clinical examination. We reviewed clinical records to determine whether there was increased utilisation of this technique among ED patients before and after the training. RESULTS: There was improvement in participants' OCSE performance (median pre-training score = 4.00, median 3-month post-training score = 7.00, P = 0.044) and self-reported competence and knowledge, which were sustained to the end of the study. There was increased use of intra-articular injection among ED patients with shoulder dislocation: 2 of 68 patients (3%) before and 11 of 76 patients (14.5%) after the study. Notably, most were performed by clinicians who did not take part in the study (n = 9). CONCLUSION: A 1-h training session using a three-dimensional-printed model improved participants objective structured clinical examination performance in ultrasound-guided injection of the shoulder joint. Although there was minimal change in the practice of participating clinicians, overall use of the procedure increased.

Musculoskeletal chest pain prevalence in emergency department presentations: A retrospective case notes review.

OBJECTIVE: Musculoskeletal (MSK) causes of chest pain are considered common in emergency care, yet management is limited, reported outcomes are poor and prevalence data in New Zealand are lacking. The present study aims to estimate the prevalence of MSK chest pain in New Zealand EDs and describe the characteristics of MSK chest pain cases. METHODS: A retrospective chart review was conducted based on de-identified clinical notes extracted from four hospitals within the South Island of New Zealand from 3 months spanning 1 March to 31 May 2021. Individual cases were categorised to the single best-fitting cause of chest pain using systems-based categorisation, based primarily on the doctors' documented final impression. RESULTS: A total of 1344 cases were categorised in the present study. MSK chest pain had a prevalence of 15% (range 11-31%) of chest pain presentations across all study sites. This represented the second most common system responsible for chest pain, after the cardiovascular system. The mean age of MSK chest pain cases was 46.9 (standard deviation [SD] 19.1) years, compared to 55.5 (SD 19.7) years in all cases. Age and gender-specific data, data from rural hospitals and MSK sub-type data are presented. CONCLUSIONS: These data provide a conservative estimate of MSK chest pain prevalence in EDs within the South Island of New Zealand. The findings highlight MSK chest pain as common in emergency care, providing a basis and justification for further research to improve management and outcomes for people with MSK chest pain.

Point-of-care ultrasound diagnosis and treatment of posterior shoulder dislocation.

Acute traumatic posterior shoulder dislocations are rare. The diagnosis is often missed or delayed, as radiologic abnormalities can be subtle. We report a case of a 37-year-old man who presented to the emergency department with severe right shoulder pain and inability to move his arm after a motor vehicle collision. Based on examination, he was initially thought to have an anterior dislocation; however, point-of-care (POC) ultrasound clearly demonstrated a posterior shoulder dislocation. Real-time ultrasound-guided intra-articular local anesthetic injection facilitated closed reduction in the emergency department without procedural sedation, and POC ultrasound confirmed successful reduction at the bedside after the procedure. This case demonstrates that POC ultrasound can be a useful diagnostic tool in the rapid assessment and treatment for patients with suspected posterior shoulder dislocation.

Accuracy and clinical use of biliary point-of-care ultrasound: A retrospective cohort study.

OBJECTIVES: To assess the utilisation and diagnostic accuracy of biliary point-of-care ultrasounds (POCUS) performed and archived in a single New Zealand ED. METHODS: A retrospective cohort study of clinically indicated biliary POCUS, archived from 1 October 2019 to 20 May 2020. POCUS interpretation was compared to expert review and radiology imaging when available. The clinician interpretations, diagnostic imaging results and surgical referrals were extracted from electronic medical records. Archived POCUS images were retrospectively reviewed by an expert to determine diagnostic quality, sonographic findings and imaging errors. RESULTS: A total of 133 ultrasounds were included; 118 (90%) archived images were of diagnostic quality. The presence or absence of gallstones was documented in 124 (93%), and other sonographic findings were less consistently documented. There was almost perfect agreement with expert review for gallstones (κ = 0.82, 95% confidence interval 0.72-0.93) and substantial agreement for wall thickening (κ = 0.63, 95% confidence interval 0.42-0.83). For patients discharged following negative POCUS without radiology imaging or surgical review no patients returned and received a diagnosis of cholecystitis over 6 months of follow-up. Imaging errors included failure to visualise the gallbladder neck, misinterpretation of artefacts and technical errors in measurement of the gallbladder wall. CONCLUSION: Biliary POCUS was primarily utilised for and was accurate for the detection of gallstones. Further quality assurance and training could be directed at earlier credentialing to address technical errors and improved documentation of POCUS findings.

Periosteal block versus intravenous regional anesthesia for reduction of distal radius fractures: A randomized controlled trial.

OBJECTIVE: We compare periosteal block and intravenous regional anesthesia (IVRA) as anesthetic techniques for reduction of distal radius fractures when performed by emergency department (ED) clinicians following brief training. METHODS: This was a single-center, nonblinded randomized controlled trial of a convenience sample of patients presenting with distal radius fractures requiring closed reduction. Primary outcome measure was patient reported fracture reduction pain score, rated on a 100-mm visual analog scale. Secondary outcomes included adjunct pain medication use, ED length of stay, remanipulation rates, participant satisfaction, clinician assessed efficacy, and clinician-assessed ease of the procedure. RESULTS: Eighty-one patients were randomized to receive IVRA (n = 41) or periosteal block (N = 40). Reduction pain scores were not normally distributed. Median (25th-75th percentile) pain scores in participants assigned to IVRA and periosteal block were 5 (1-27.5) and 26 (8.5-63) mm, respectively, (p = 0.007). Use of adjunct medications during reduction was higher for the periosteal block group compared with IVRA (57.5% vs. 22.5%, p = 0.003). Remanipulation rates were 17.5% for periosteal block versus 7.5% for IVRA (p = 0.31). There was no difference in length of stay, patient satisfaction, or clinician's assessed ease of the anesthetic technique. There was a difference in clinician's assessment of efficacy between groups, with IVRA described as "extremely effective" by 65% and periosteal block described as "extremely effective" by 25% (p = 0.003). CONCLUSIONS: When performed by a diverse group of ED clinicians periosteal block provided inferior analgesia to IVRA but may provide an alternative when IVRA cannot be performed.

Paediatric fever management practices and antipyretic use among doctors and nurses in New Zealand emergency departments.

OBJECTIVES: To assess (i) paediatric fever management practices among New Zealand ED doctors and nurses, including adherence to best practice guidelines; and (ii) the acceptability of a randomised controlled trial (RCT) of antipyretics for relief of discomfort in young children. METHODS: A cross-sectional survey of doctors and nurses across 11 New Zealand EDs. The primary outcome of adherence to paediatric fever management best practice guidelines was assessed with clinical vignettes and defined as single antipyretic use for the relief of fever-related discomfort. RESULTS: Out of 602 participants (243 doctors, 353 nurses and six unknown; response rate 47.5%), only 64 (10.6%, 95% confidence interval [CI] 8.3-13.4%) demonstrated adherence to best practice guidelines. In a febrile settled child with normal fluid intake, the percentage of participants that would use antipyretics doubled with abnormal vital signs (33.7% vs 72.9%, difference -39.2%, 95% CI -44.4% to -34.0%). Most participants would use antipyretics for reduced fluid intake (n = 494, 82.1%, 95% CI 78.8-85.0%) in a febrile settled child. Over half (n = 339, 57.1%, 95% CI 53.0-61.1%) would advise giving antipyretics to prevent febrile convulsions. Most (n = 467, 80.0%, 95% CI 76.5-83.1%) participants agreed that a RCT of antipyretics in febrile children <2 years of age with relief of discomfort as a primary outcome is needed. CONCLUSIONS: Just over 10% of New Zealand ED doctors and nurses demonstrated adherence to paediatric fever management best practice guidelines. A RCT of antipyretics in febrile children <2 years of age specifically addressing relief of discomfort as a primary outcome is strongly supported.

Clinical presentation and assessment of older patients presenting with headache to emergency departments: A multicentre observational study.

OBJECTIVE: To describe the characteristics, assessment and management of older emergency department (ED) patients with non-traumatic headache. METHODS: Planned sub-study of a prospective, multicentre, international, observational study, which included adult patients presenting to ED with non-traumatic headache. Patients aged ≥75 years were compared to those aged <75 years. Outcomes of interest were epidemiology, investigations, serious headache diagnosis and outcome. RESULTS: A total of 298 patients (7%) in the parent study were aged ≥75 years. Older patients were less likely to report severe headache pain or subjective fever (both P < 0.001). On examination, older patients were more likely to be confused, have lower Glasgow Coma Scores and to have new neurological deficits (all P < 0.001). Serious secondary headache disorder (composite of headache due to subarachnoid haemorrhage (SAH), intracranial haemorrhage, meningitis, encephalitis, cerebral abscess, neoplasm, hydrocephalus, vascular dissection, stroke, hypertensive crisis, temporal arteritis, idiopathic intracranial hypertension or ventriculoperitoneal shunt complications) was diagnosed in 18% of older patients compared to 6% of younger patients (P < 0.001). Computed tomography brain imaging was performed in 66% of patients ≥75 years compared to 35% of younger patients (P < 0.001). Older patients were less likely to be discharged (43% vs 63%, P < 0.001). CONCLUSIONS: Older patients with headache had different clinical features to the younger cohort and were more likely to have a serious secondary cause of headache than younger adults. There should be a low threshold for investigation in older patients attending ED with non-traumatic headache.

Adapting online education resources to meet the needs of an emergency medicine training programme in a pilot feasibility study.

This article was migrated. The article was marked as recommended. Introduction: Online resources are available to enhance emergency medicine training programmes. The aim of this study was to evaluate the feasibility of using online case-based resources created in the United States in a New Zealand emergency medicine training programme. Methods: Evaluation data were collected from junior doctors and educators after they participated in the programme. Data sources included research notes and questionnaire responses. The data were analysed qualitatively using a general inductive approach. Results: Evaluation feedback from 19 junior doctors and 14 educators was interpreted to suggest that the online resource, with minor adaptations, was feasible to use in a New Zealand emergency medicine training programme. Findings indicated that educators were able to modify the materials to modify to meet local requirements, however, the opportunity to include a cultural component was missed. Participants appreciated the case-based format and felt that they established a safe and encouraging learning environment with each other. Participants were able to develop a systematic approach to emergency situations and identify red flags related to deteriorating patients. Discussion and Conclusion: Evaluation findings indicate that adapting an online-sourced curriculum is feasible to educators and acceptable to junior doctors and educators participating in a single New Zealand based Emergency Medicine training program. Educators in other international training settings may find the lessons learned helpful when adapting online resources to address the learning needs of their junior doctors. Next steps are to evaluate the impact of this resource on the knowledge and skills learned by junior doctors and any changes in their care for patients in emergency medicine situations.

Emergency department presentations in the Southern District of New Zealand during the 2020 COVID-19 pandemic lockdown.

OBJECTIVE: To assess changes in presentations to EDs during the COVID-19 pandemic lockdown in the Southern Region of New Zealand. METHODS: We conducted a retrospective audit of patients attending EDs in the Southern District Health Board (SDHB), from 1 March to 13 May 2020. We made comparisons with attendances during the same period in 2019. The 2020 study period included 'pre-lockdown' (1 March-25 March), 'level 4 (strict) lockdown' (26 March-27 April) and 'level 3 (eased) lockdown' (28 April-13 May). RESULTS: Patient volumes reduced in all SDHB EDs during levels 4 and 3, mostly representing a loss of low acuity patients (Australasian Triage Scale 3, 4 and 5), although high-acuity presentations also declined. Average patient age increased by 5 years; however, the proportions of sexes and ethnicities did not change. Presentations of cerebrovascular accidents and appendicitis did not change significantly. Trauma, mental health, acute coronary syndrome and infectious respiratory presentations decreased significantly during level 4, and infectious respiratory presentations decreased further in level 3. CONCLUSIONS: Within the SDHB, patient volumes reduced during levels 4 and 3 of our lockdown, with reduced low-acuity presentations. High-acuity patient numbers also declined. Trauma, mental health, alcohol-related, infectious respiratory and acute coronary syndrome presentations declined while cerebrovascular accident and appendicitis numbers showed little to no change.

Facilitators, barriers and opportunities in workplace wellbeing: A national survey of emergency department staff.

INTRODUCTION: Emergency department (ED) staff face daily exposure to the illness, injury, intoxication, violence and distress of others. Rates of clinician burnout are high and associated with poor patient outcomes. This study sought to measure the prevalence of burnout in ED personnel as well as determine the important facilitators of and barriers to workplace wellbeing. METHOD: An anonymous online survey including six open-ended questions on workplace wellbeing was completed by 1372 volunteer participants employed as nurses, doctors, allied health or nonclinical roles at 22 EDs in Aotearoa, New Zealand in 2020. Responses to the questions were analysed using a general inductive approach. RESULTS: The three key themes that characterise what matters most to participants' workplace wellbeing are: (1) Supportive team culture (2) Delivering excellent patient-centred care and (3) Professional development opportunities. Opportunities to improve wellbeing also focused on enhancements in these three areas. CONCLUSION: In order to optimise workplace wellbeing, emergency departments staff value adequate resourcing for high-quality patient care, supportive and cohesive teams and professional development opportunities. Initiatives in these areas may facilitate staff wellbeing as well as improving safety and quality of patient care.

Workplace wellbeing in emergency departments in Aotearoa New Zealand 2020.

AIM: To quantify staff burnout and wellbeing in emergency departments (EDs) throughout New Zealand (NZ). METHODS: A national cross sectional electronic survey of New Zealand clinical and non-clinical ED staff was conducted between 9 March and 3 April 2020. Burnout and wellbeing were assessed using the Copenhagen Burnout Inventory (CBI) and a variety of quantitative measures. Differences between measures were assessed by demography and work role using univariate analyses. Multivariate analyses assessed associations between burnout and wellbeing. RESULTS: 1,372 staff responded from 22 EDs around New Zealand (response rate 43%). Most were female (n=678, 63%), NZ European (n=799, 59%), aged 20-39 years (n=743, 54%) and nurses (n=711, 52%). The overall prevalence of personal burnout was 60%, work-related burnout 55% and patient-related burnout 19%. There was a wide variation of burnout across all EDs. Females and nurses showed the highest degree of burnout by gender and role, respectively. Measures of wellbeing with significant negative correlations with burnout were work-related happiness, work-life balance, job satisfaction and perceived workplace excellence. Work stress had significant positive correlation with burnout. CONCLUSION: New Zealand ED staff have a high degree of burnout. Safety, financial sustainability and quality of care are likely being adversely affected. Stakeholders can be informed by findings from this study to inspire meaningful interventions in EDs and throughout the New Zealand healthcare system.

Emergency department impact following the introduction of an electric scooter sharing service.

OBJECTIVE: We aimed to describe the impact on the single ED serving Dunedin, New Zealand, following the introduction of an electric-scooter (e-scooter) sharing service. METHODS: A retrospective cohort study comparing the number of vehicle related injuries during identical 6-week periods in 2018 and 2019 was performed. A descriptive analysis of the subset of e-scooter related presentations was undertaken. RESULTS: A total of 172 and 228 vehicle related injury presentations were identified in samples from 2018 and 2019, respectively. During the 2018 study period zero e-scooter related ED presentations were identified. In 2019 there were 56 e-scooter related ED presentations (P-value <0.001) representing 54 events. There were 52 car, 21 motorbike and 62 bicycle related presentations during the same 2019 time period. Further descriptive analysis showed the majority of e-scooter presentations were for minor injury. Fractures or dislocations were found in 17 (32%) patients and 14 (26%) patients sustained a head injury, one of which was severe. Isolated minor musculoskeletal injuries were seen in 25 (46%) patients. On average one ED bed was occupied by an e-scooter patient for 2 h and 44 min each day during the 6-week study period in 2019. CONCLUSION: The introduction of an e-scooter sharing service resulted in a new injury hazard. Our study presents the number of e-scooter related ED presentations relative to other vehicles related injury visits and describes the injury patterns associated with e-scooter use which may inform future public policy.