British paramedic journal最新文献

Introduction: Pre-hospital clinicians can expect to encounter patients with agitation, including acute behavioural disturbance (ABD). These situations carry significant risk for patients and emergency medical services. Advanced paramedics within the London Ambulance Service (LAS) are frequently tasked to these incidents. At present, little evidence exists regarding clinical decision-making and management of this patient group. We sought to explore the demographics of patients presenting with potential ABD and quantify the degree of agitation, physical restraint, effectiveness of chemical sedation and any associated complications.

Methods: A retrospective analysis of pre-hospital clinical records for patients coded with ABD and attended by LAS advanced paramedics between 1 October 2019 and 30 September 2020. Sedation assessment tool (SAT) scores were used as the primary outcome measure.

Results: A total of 237 patient records were identified. Of the patients, 147 (62%) were physically restrained and 104 (44%) were chemically sedated. Sedation was more commonly administered where patients were exposed to physical restraint. High SAT scores were associated with the administration of sedative agents and at higher doses. Of patients undergoing sedation, 89 (85%) had a SAT score reduction of 2 points or a final score ≤ 0. The mean SAT score reduction was 2.72. Three cases of minor injury were reported following physical restraint.

Conclusion: Advanced paramedics undertook sedation in less than half the cohort, suggesting that other strategies such as communication and positioning were utilised. Most patients were managed into a state between being restless and rousable, largely negating the need for ongoing physical restraint during hospital transfer. Appropriately trained advanced paramedics can utilise sedation safely and effectively in selected cases.

Background: Haemorrhage and subsequent hypovolemia from traumatic injury is a potentially reversible cause of cardiac arrest, as interventions can be made to increase circulatory volume and organ perfusion. Traditionally, intravenous (IV) fluid therapy is recommended for all patients who have experienced a haemorrhagic emergency. There has been some argument, however, that this may not be the most effective treatment as isotonic fluids can dilute coagulation factors and further stimulate bleeding. Permissive hypotension, also known as hypotensive resuscitation within the context of damage control resuscitation, is a method of managing haemorrhagic trauma patients by restricting IV fluid administration to allow for a reduced blood pressure. It is important to evaluate and compare current research literature on the effects of both permissive hypotension and fluid therapy on patients suffering from traumatic haemorrhage.

Methods: A rapid review was conducted by systematically searching and identifying literature to narratively compare permissive hypotension and fluid therapy. Searches were carried out across two databases to find relevant primary research containing quantitative data that provide contextual and statistical evidence to achieve the aim of this review. Papers were narratively synthesised to produce key themes for discussion.

Results: The database searches identified 125 records, 78 from PubMed and 47 from ScienceDirect. Eleven duplicates were removed, and 114 titles screened. Ninety-four records were initially excluded and nine more after abstract review. Eleven papers were critiqued using Benton and Cormack's framework, with eight articles included in the final review.

Conclusion: Permissive hypotension may have a positive impact on 30-day mortality, when compared with fluid resuscitation methods, however there is evidence to suggest that hypotensive resuscitation may be more effective for blunt force injuries. Some studies even suggest a reduction in the treatment cost when reducing fluid volumes. Penetrating injuries are usually more likely to be a compressible source of haemorrhage within which haemorrhage control can be gained much more easily. There are recommendations for the use of permissive hypotension in both compressible and non-compressible injuries. It is difficult at this time to draw definitive conclusions for the treatment of every case related to traumatic haemorrhage given the variability and unpredictability of trauma.

Introduction: Critical incidents in ambulance work are not easily compared to other risk occupations. Understanding types of incidents that can be considered critical in operational ambulance work is important to prevent work-related post-traumatic stress (PTS).

Aim: This study aimed to develop a scale of critical incidents in ambulance work and assess its predictive validity in relation to the severity of PTS symptoms.

Methods: A total of 1092 open-ended descriptions from Danish ambulance personnel were content analysed to develop a categorical scale that identifies types of events perceived as critical to operative ambulance personnel. Multiple regression was used to assess whether the scale predicted PTS symptoms and to assess the cumulative effect of exposure to these events.

Results: The study found that the 1092 descriptions of critical events could be condensed into 28 categories of critical events. These ranged from life-threatening situations and deaths, to more daily events such as handling strong emotional reactions from patients' relatives and working with terminally ill children. The frequency of events significantly predicted the severity of PTS symptoms with low to moderate effect (std beta = 0.2, t(375) = 3.7, p < .001), even when adjusting for known risk factors for post-traumatic stress disorder.

Conclusion: This study showed that critical events in ambulance work included events that are not normally considered traumatic, and indicated that understanding the cumulative effect of these events is important when trying to prevent traumatic sequalae in ambulance personnel. The study highlighted the importance of increased focus on non-traumatic incidents that have an ongoing impact on paramedics' mental health and well-being. The Critical Incidents Scale for Ambulance Work - Denmark (CISAW-D) is a promising tool for systematic screening for exposure to critical events in ambulance work.

Introduction: In January 2021, Yorkshire Ambulance Service and Hull University Teaching Hospitals implemented a pilot COVID-19 lateral flow testing (LFT) and direct admissions pathway to assess the feasibility of using pre-hospital LFTs to bypass the emergency department. Due to lower than anticipated uptake of the pilot among paramedics, we undertook a process evaluation to assess reasons for low uptake and perceived potential benefits and risks associated with the pilot.

Methods: We undertook semi-structured telephone interviews with 12 paramedics and hospital staff. We aimed to interview paramedics who had taken part in the pilot, those who had received the project information but not taken part and ward staff receiving patients from the pilot. We transcribed interviews verbatim and analysed data using thematic analysis.

Results: Participation in the pilot appeared to be positively influenced by high personal capacity for undertaking research (being 'research-keen') and negatively influenced by 'COVID-19 exhaustion', electronic information overload and lack of time for training. Barriers to use of the pathway related to 'poor timing' of the pilot, restrictive patient eligibility and inclusion criteria. The rapid rollout meant that paramedics had limited knowledge or awareness of the pilot, and pilot participants reported poor understanding of the pilot criteria or the rationale for the criteria. Participants who were involved in the pilot were overwhelmingly positive about the intervention, which they perceived as having limited risks and high potential benefits to the health service, patients and themselves, and supported future roll-out.

Conclusions: Ambulance clinician involvement in rapid research pilots may be improved by using multiple recruitment methods (electronic and other), providing protected time for training and increased direct support for paramedics with lower personal capacity for research. Improved communication (including face-to-face approaches) may help understanding of eligibility criteria and increase appropriate recruitment.

Introduction: Ambulance services play a key role in the recognition and care of patients nearing their end of life, yet are expected to recognise and manage these complex presentations often with limited education. Paramedics operate across large geographical areas, meaning education delivery is challenging. Yorkshire Ambulance Service implemented Project Extension for Community Healthcare Outcomes (ECHO), which is the creation of virtual communities of practice to address this problem and increase access to specialist supervision, education and sharing of practice. We undertook a service evaluation of the programme and interviewed paramedics about their experiences with ECHO.

Methods: Semi-structured interviews were conducted with eight ambulance clinicians who took part in the end-of-life care (EoLC) ECHO programme. Thematic analysis and coding was undertaken to identify and develop the emerging themes.

Results: This study identified three key themes: programme structure, factors influencing engagement and professional impact. The provision of a virtual community of practice through Project ECHO was a unique and highly valued experience, which was accessible and allowed for networking, peer support and sharing of practice. The concept of a ripple effect was reported in disseminating learning across the wider team.

Conclusion: The development of virtual communities of practice as a novel educational intervention has the potential to transform clinical supervision and ongoing education for ambulance clinicians who are often isolated by the nature of ambulance services that cover large regions.

Background and aim: Maternity patients form a small but significant portion of paramedical workload and this research aims to pragmatically explore East of England Ambulance Service paramedics' experiences of providing pre-hospital maternity care.

Methods: Through semi-structured individual interviews, participants' thoughts and feelings regarding obstetric confidence and competence will be explored. It will be investigated whether they think their training and equipment is adequate and what they would change about maternity patient management. Data will be thematically analysed and the findings used to improve paramedic training, with a view to improving their confidence and competence. In turn, this should improve patient experiences and outcomes.

Background: Spinal assessment and immobilisation has been a topic of debate for many years where, despite an emerging evidence base and the delivery of new guidance overseas, little has changed within UK pre-hospital practice. Since 2018, South East Coast Ambulance Service NHS Foundation Trust has spent time working with local trauma networks and expertise from within the region and international colleagues to develop a set of C-spine assessment and immobilisation guidelines that reflect the current best available international evidence and significant changes in international pre-hospital practice from settings such as Scandinavia and Australasia.

Methods: A specialist group was commissioned to review the topic of pre-hospital spinal immobilisation and explore potential for evidence-based improvement. In conjunction with local trauma networks, subject matter experts and a thorough review of recent literature, a series of recommendations were made in order to improve spinal care within the authoring trust.

Results: Seven recommendations were made, and an updated set of guidelines produced. These included the removal of semi-rigid collars from pre-hospital spinal immobilisation; the creation of two tiers of patients to ensure that the high-risk and low-risk populations are considered separately and an accompanying decision tool to safeguard both cohorts; an increased emphasis on the risk of spinal injury in the frail and older patient; an emphasis on spinal motion restriction rather than rigid immobilisation; an increased emphasis on self-extrication; and the use of a marker for emergency departments.

Summary: An updated set of guidance has been produced using a combination of specialist and expert opinion alongside a literature review with close involvement of key stakeholders, both public and professional. The new guidance helps to ensure a patient-centred approach where each person is considered an individual with their risk of injury and management measures tailored to their specific needs.

Introduction: Revised guidelines for the management of cardiac arrest have placed greater emphasis on early defibrillation and closed chest compressions; subsequently there has been a significant rise in the number of patients gaining a return of spontaneous circulation (ROSC). As a consequence, emergency medical services have realised the importance of therapies delivered during this phase of care. In some Trusts this includes the use of inotropic agents to augment the cardiovascular system and maintain adequate cerebral and coronary perfusion pressures to mitigate the effects of post-cardiac arrest syndrome. Currently, limited evidence exists with regards to the efficacy of such treatments in the pre-hospital phase.

Methods: Retrospective observational analysis of out-of-hospital cardiac arrest patients who received an adrenaline infusion by critical care paramedics. Infusion rates, time of call (ToC) to ROSC and 30-day mortality were compared.

Results: Over a 2-year period, 202 patients were recorded as having an adrenaline infusion commenced. Of these, 25 were excluded as they did not meet criteria or had incomplete data and 22 were excluded as the infusion was stopped at scene; 155 patients were admitted to hospital. There were no survivors in the non-shockable group and three survivors in the shockable group at 30 days. A rare events analysis found no relationship between infusion rate, ToC to ROSC and 30-day mortality (Wald chi2, 1.37).

Conclusion: Commencement of adrenaline infusions in post-ROSC was associated with significant 30-day mortality, especially in non-shockable rhythms. Further research is needed to elucidate whether this intervention has any benefit in the post-ROSC patient.

Introduction: Mechanical chest compression devices (MCCDs) provide chest compressions mechanically to a person in cardiac arrest. Those chest compressions would usually be provided manually. Previous studies into the use of MCCDs have focused on the quantitative outcomes, with little emphasis on the qualitative experiences of those using MCCDs.

Purpose: To collect and report ambulance crews' experiences of using MCCDs for out-of-hospital resuscitation attempts.

Methods: The philosophical approach was constructivist, the methodology qualitative and the data collection method online focus groups. Convenience sampling was used to recruit participants who met the inclusion criteria, which broadly were to have experience of using MCCDs for out-of-hospital resuscitation. There have been two types of MCCD used locally. Participants were included regardless of which type of device they had experience of. Similarly, participants were included whether they had active or passive experience of the devices. The focus groups were recorded, fully transcribed and then analysed using constant comparison.

Results: Four selective codes emerged. These were factors directly affecting ambulance crew members; practicalities of a resuscitation attempt; ambulance crew members' perceptions, experiences and thoughts; negatives of MCCDs.

Conclusion: The main perceptions arising from the participants' discussion in this work were that MCCD use could potentially provide psychological protection to ambulance crew members when reflecting on resuscitation attempts, and participants felt there is an overall reduction of cognitive load for ambulance crew members when using MCCDs for resuscitation attempts. There were particularly timely benefits expressed of MCCDs easing the physical fatigue of a resuscitation attempt when responding wearing personal protective equipment, as has been required during the COVID-19 pandemic. MCCDs were felt to be of benefit when transporting a patient in cardiac arrest but differences were expressed as to whether the LUCAS-2 in particular helps or hinders extrication of a patient.

Introduction: Natural language processing (NLP) is an area of computer science that involves the use of computers to understand human language and semantics (meaning) and to offer consistent and reliable responses. There is good evidence of significant advancement in the use of NLP technology in dealing with acutely ill patients in hospital (such as differential diagnosis assistance, clinical decision-making and treatment options). Further technical development and research into the use of NLP could enable further improvements in the quality of pre-hospital emergency care. The aim of this literature review was to explore the opportunities and potential obstacles in implementing NLP during this phase of emergency care and to question if NLP could contribute towards improving the process of nature of call screening (NoCS) to enable earlier recognition of life-threatening situations during telephone triage of emergency calls.

Methods: A systematic search strategy using two electronic databases (CINAHL and MEDLINE) was conducted in December 2021. The PRISMA systematic approach was used to conduct a review of the literature, and selected studies were identified and used to support a critical review of the actual and potential use of NLP for the call-taking phase of emergency care.

Results: An initial search offered 204 records: 23 remained after eliminating duplicates and a consideration of title and abstracts. A further 16 full-text articles were deemed ineligible (not related to the subject under investigation), leaving seven included studies. Following a thematic review of these studies two themes emerged, that are considered individually and together: (i) use of NLP for dealing with out-of-hospital cardiac arrest and (ii) responding to increased accuracy of NLP.

Conclusions: NLP has the potential to reduce or eliminate human bias during the emergency triage assessment process and contribute towards improving triage accuracy in pre-hospital decision-making and an early identification and categorisation of life-threatening conditions. Evidence to date is mostly linked to cardiac arrest identification; this review proposes that during the call-taking phase NLP should be extended to include further medical emergencies (including fracture/trauma, stroke and ketoacidosis). Further research is indicated to test the reliability of these findings and a proportionate introduction of NLP simultaneous with increased quality and reliability.