Emergency Medicine Journal最新文献

Background: Early assessment of patients with suspected transient ischaemic attack (TIA) is crucial to provision of effective care, including initiation of preventive therapies and identification of stroke mimics. Many patients with TIA present to emergency medical services (EMS) but may not require hospitalisation. Paramedics could identify and refer patients with low-risk TIA, without conveyance to the ED. Safety and effectiveness of this model is unknown.

Aim: To assess the feasibility of undertaking a fully powered randomised controlled trial (RCT) to evaluate clinical and cost-effectiveness of paramedic referral of patients who call EMS with low-risk TIA to TIA clinic, avoiding transfer to ED.

Methods: The Transient Ischaemic attack Emergency Referral (TIER) intervention was developed through a survey of UK ambulance services, a scoping review of evidence of prehospital care of TIA and convening a specialist clinical panel to agree its final form. Paramedics in South Wales, UK, were randomly allocated to trial intervention (TIA clinic referral) or control (usual care) arms, with patients' allocation determined by that of attending paramedics.Predetermined progression criteria considered: proportion of patients referred to TIA clinic, data retrieval, patient satisfaction and potential cost-effectiveness.

Results: From December 2016 to September 2017, eighty-nine paramedics recruited 53 patients (36 intervention; 17 control); 48 patients (31 intervention; 17 control) consented to follow-up via routine data. Three intervention patients, of seven deemed eligible, were referred to TIA clinic by paramedics. Contraindications recorded for the other intervention arm patients were: Face/Arms/Speech/Time positive (n=13); ABCD2 score >3 (n=5); already anticoagulated (n=2); crescendo TIA (n=1); other (n=8). Routinely collected electronic health records, used to report further healthcare contacts, were obtained for all consenting patients. Patient-reported satisfaction with care was higher in the intervention arm (mean 4.8/5) than the control arm (mean 4.2/5). Health economic analysis suggests an intervention arm quality-adjusted life-year loss of 0.0094 (95% CI -0.0371, 0.0183), p=0.475.

Conclusion: The TIER feasibility study did not meet its progression criteria, largely due to low patient identification and referral rates. A fully powered RCT in this setting is not recommended.

Trial registration number: ISRCTN85516498.

Background: Pulse oximetry measures oxygen saturation non-invasively by using differential absorption of infrared signals which are dependent on the oxyhaemoglobin:deoxyhaemoglobin ratio. We tested the hypothesis that pulse oximetry error in measurements of blood oxygen saturations may be associated with blood haemoglobin levels.

Methods: The study design was an observational study of all adult patients admitted to a large teaching hospital with suspected or confirmed COVID-19 infection from February 2020 to December 2021 who had arterial blood gases (ABG) drawn. The pulse oximetry reading was compared with the arterial saturation on the ABG and the measurement error was determined according to the ABG haemoglobin. A secondary analysis was performed among a subset of patients with venous haemoglobins drawn within 24 hours, comparing measurement error between ABG arterial saturation and pulse oximetry readings between those with normal (150 g/L) and low (70 g/L) haemoglobins.

Results: The analysis used 5922 paired oxygen saturations from 3994 patients with contemporaneous haemoglobin measurements by ABG. A 1 g/L decrease in blood haemoglobin was associated with an 0.021% (95% CI: +0.008% to +0.033%) increase in the measurement error (in the direction of a falsely elevated reading.). In the 1086 patients who had had a venous haemoglobin there was a 0.055% (95% CI: +0.020% to +0.090%) increase in the measurement error of oxygen saturation per 1 g/L decrease in blood haemoglobin. The measurement error was thus greater in those with anaemia than in those with normal haemoglobin.

Conclusion: As blood haemoglobin decreases, the oxygen saturation measurement derived from a pulse oximeter reads erroneously higher than the true value measured by ABG. While this study was confined to patients with COVID-19, physicians should be aware of this potential discrepancy among all patients with haemorrhage or known anaemia.

Background: The annual incidence of testicular torsion is approximately 1 in 4000 males under the age of 25. Despite the 97% testicular salvage rate when surgical intervention is within 6 hours of onset, orchidectomy is required in 40% of cases. These comparatively poor outcomes are driven by delays to intervention, the majority of which take place prior to presentation to healthcare. This study synthesises existing evidence to understand factors leading to delayed presentation to hospital in individuals with acute scrotal pain.

Methods: A comprehensive literature search was performed with support from an information scientist. Two authors performed article screening, data extraction and inductive thematic synthesis independently, with disagreements resolved by discussion at each stage. An assessment of confidence in the review findings was performed using the ConQual approach.

Results: The search identified 1251 unique articles for screening, with five eligible for inclusion; all included publications were drawn from two PhD projects. Synthesis of these articles revealed five descriptive themes with five subthemes. A lack of knowledge and education about testicular health, embarrassment and reliance on others for access to healthcare are major factors leading to delays in presentation. Societal and cultural impacts on health-seeking behaviour and denial were also causes of delayed presentation to healthcare.

Discussion: A lack of knowledge about testicular anatomy and health among both adults and children is amenable to improvement through education, and would likely impact many of the factors identified as contributory to delays. Communication was an overarching factor connecting the descriptive themes.

Prospero registration number: CRD42023469435.

Introduction: Stress and burnout are prevalent among emergency department (ED) staff in the UK. The concept of well-being interventions for ED staff is a growing area of interest and research worldwide. Various interventions are described in the literature, yet little is known about the experience of ED staff in the UK of interventions designed to support their well-being. This study therefore aimed to understand their experiences of these interventions.

Methods: Semi-structured interviews were carried out with nine members of staff from different professional backgrounds at a tertiary trauma centre in the UK between June and July 2023. The inclusion criteria were staff who had worked in a National Health Service ED setting in the UK for more than 12 months. Participants were asked about their experience and perceptions of well-being interventions delivered in the workplace. A phenomenographical approach was applied to analyse the narrative data.

Results: The findings resulted in seven qualitatively different but related categories. Participants experienced interventions to be: (1) necessary due to their stressful working environment; (2) beneficial in supporting their well-being; (3) feasible in an ED setting; (4) inadequate due to lack of quality and accessibility; (5) improving with increased acceptability and support; (6) restricted by clinical and organisational factors; and (7) ambiguous in definition, measurement and individual interpretation. Space for facilitated reflection and role modelling by leaders were felt to be important.

Conclusions: Job demands simultaneously necessitate and restrict the provision of adequate interventions to support well-being in the ED. These demands need to be addressed as part of wider organisational change including the provision of self-care facilities and opportunities, protected time for facilitated reflection, high-quality and accessible learning opportunities for personal and professional development, training for staff delivering well-being interventions and positive role modelling by leaders.

Background: Patients with traumatic out-of-hospital cardiac arrest (t-OHCA) require on-scene airway management to maintain tissue oxygenation. However, the benefits of prehospital endotracheal intubation remain unclear, particularly regarding neurological outcomes. Therefore, this study aimed to evaluate the association between prehospital intubation and favourable neurological outcomes in patients with t-OHCA.

Methods: This retrospective cohort study used a Japanese nationwide trauma registry from 2019 to 2021. It included adult patients diagnosed with traumatic cardiac arrest on emergency medical service arrival. Glasgow Outcome Scale (GOS) scores, survival at discharge and presence of signs of life on hospital arrival were compared between patients with prehospital intubation and those with supraglottic airway or manual airway management. Inverse probability weighting with propensity scores was used to adjust for patient, injury, treatment and institutional characteristics, and the effects of intubation on outcomes averaged over baseline covariates were shown as marginal ORs.

Results: A total of 1524 patients were included in this study, with 370 undergoing intubation before hospital arrival. Prehospital intubation was associated with favourable neurological outcomes at discharge (GOS≥4 in 5/362 (1.4%) vs 10/1129 (0.9%); marginal OR 1.99; 95% CI 1.12 to 3.53; p=0.021) and higher survival to discharge (25/370 (6.8%) vs 63/1154 (5.5%); marginal OR 1.43; 95% CI 1.08 to 1.90; p=0.012). However, no association with signs of life on hospital arrival was observed (65/341 (19.1%) vs 147/1026 (14.3%); marginal OR 1.09; 95% CI 0.89 to 1.34). Favourable outcomes were observed only in patients who underwent intubation with a severe chest injury (Abbreviated Injury Score ≥3) and with transportation time to hospital >15 min (OR 14.44 and 2.00; 95% CI 1.89 to 110.02 and 1.09 to 3.65, respectively).

Conclusions: Prehospital intubation was associated with favourable neurological outcomes among adult patients with t-OHCA who had severe chest injury or transportation time >15 min.