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Chatterjee NA, Rea TD. Shortening time to defibrillation in shockable cardiac arrest matters: how do we do it? Heart 2023; 109:1344-1345. [PMID: 37169552 DOI: 10.1136/heartjnl-2023-322465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/13/2023] Open
Affiliation(s)
- Neal A Chatterjee
- Deparment of Medicine, Division of Cardiology, University of Washington, Seattle, Washington, USA
| | - Thomas D Rea
- General Internal Medicine, University of Washington, Seattle, Washington, USA
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Berglund E, Byrsell F, Forsberg S, Nord A, Jonsson M. Are first responders first? The rally to the suspected out-of-hospital cardiac arrest. Resuscitation 2022; 180:70-77. [PMID: 36162614 DOI: 10.1016/j.resuscitation.2022.09.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 09/15/2022] [Accepted: 09/17/2022] [Indexed: 11/20/2022]
Abstract
BACKGROUND Time is the crucial factor in the "chain of survival" treatment concept for out-of-hospital cardiac arrest (OHCA). We aimed to measure different response time intervals by comparing emergency medical system (EMS), fire fighters and smartphone aided volunteer responders. METHODS In two large Swedish regions, volunteer responders were timed from the alert until they arrived at the scene of the suspected OHCA. The first arriving volunteer responders who tried to fetch an automated external defibrillator (AED-responder) and who ran to perform bystander cardiopulmonary resuscitation (CPR-responder) were compared to both the first arriving EMS and fire fighters. Three-time intervals were measured, from call to dispatch, the unit response time (from dispatch to arrival) and the total response time. RESULTS During 22 months, 2631 suspected OHCAs were included. The median time from call to dispatch was in minutes 1.8 (95% CI = 1.7-1.8) for EMS, 2.9 (95% CI = 2.8-3.0) for fire-fighters and 3.0 (95% CI = 2.9-3.1) for volunteer responders. The median unit response time was 8.3 (95% CI = 8.1-8.5) for EMS, 6.8 (95% CI = 6.7-6.9) for fire fighters and 6.0 (95% CI = 5.7-6.2) for AED-responders and 4.6 (95% CI = 4.5-4.8) for CPR-responders. The total response time was 10.4 (95% CI = 10.1-10.6) for EMS, 10.2 (95% CI = 9.9-10.4) for fire fighters, 9.6 (95% CI = 9.1-9.8) for AED-responders and 8.2 (95% CI = 8.0-8.3) for CPR-responders. CONCLUSION First arriving volunteer responders had the shortest unit response time when compared to both fire fighters and EMS, however this advantage was reduced by delays introduced at the dispatch center. Earlier automatic dispatch should be considered in further studies.
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Affiliation(s)
- E Berglund
- Department of Clinical Science and Education, Södersjukhuset, Centre for Resuscitation Science, Karolinska Institutet, Sweden.
| | - F Byrsell
- Department of Clinical Science and Education, Södersjukhuset, Centre for Resuscitation Science, Karolinska Institutet, Sweden
| | - S Forsberg
- Department of Clinical Science and Education, Södersjukhuset, Centre for Resuscitation Science, Karolinska Institutet, Sweden
| | - A Nord
- Department of Clinical Science and Education, Södersjukhuset, Centre for Resuscitation Science, Karolinska Institutet, Sweden
| | - M Jonsson
- Department of Clinical Science and Education, Södersjukhuset, Centre for Resuscitation Science, Karolinska Institutet, Sweden
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Johnson AM, Cunningham CJ, Zégre-Hemsey JK, Grewe ME, DeBarmore BM, Wong E, Omofoye F, Rosamond WD. Out-of-Hospital Cardiac Arrest Bystander Defibrillator Search Time and Experience With and Without Directional Assistance: A Randomized Simulation Trial in a Community Setting. Simul Healthc 2022; 17:22-28. [PMID: 34081062 PMCID: PMC8633074 DOI: 10.1097/sih.0000000000000582] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
INTRODUCTION Probability of survival after out-of-hospital cardiac arrest (OHCA) doubles when a bystander initiates cardiopulmonary resuscitation and uses an automated external defibrillator (AED) rapidly. National, state, and community efforts have increased placement of AEDs in public spaces; however, bystander AED use remains less than 2% in the United States. Little is known about the effect of giving bystanders directional assistance to the closest public access AED. METHODS We conducted 35 OHCA simulations using a life-sized manikin with participants aged 18 through 65 years who searched for public access AEDs in 5 zones on a university campus. Zones varied by challenges to pedestrian AED acquisition and number of fixed AEDs. Participants completed 2 searches-first unassisted and then with verbal direction to the closest AED-and we compared AED delivery times. We conducted pretest and posttest surveys. RESULTS In all 5 zones, the median time from simulated OHCA onset to AED delivery was lower when the bystander received directional assistance. Time savings (minutes:seconds) varied by zone, ranging from a median of 0:53 (P = 0.14) to 3:42 (P = 0.02). Only 3 participants immediately located the closest AED without directional assistance; more than half reported difficulty locating an AED. CONCLUSIONS These findings may inform strategies to ensure that AEDs are consistently marked and placed in visible, accessible locations. Continued emphasis on developing strategies to improve lay bystanders' ability to locate and use AEDs may improve AED retrieval times and OHCA outcomes.
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Affiliation(s)
- Anna M. Johnson
- 123 West Franklin Street, Suite 410, Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27516
| | - Christopher J. Cunningham
- 321 South Columbia Street, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27516
| | - Jessica K. Zégre-Hemsey
- Campus Box 7460, Carrington Hall, School of Nursing, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7460
| | - Mary E. Grewe
- 160 North Medical Drive, Brinkhous-Bullitt Building, 2nd Floor #220-237, North Carolina Translational and Clinical Sciences Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7064
| | - Bailey M. DeBarmore
- 123 West Franklin Street, Suite 410, Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27516
| | - Eugenia Wong
- 123 West Franklin Street, Suite 410, Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27516
| | - Fola Omofoye
- 321 South Columbia Street, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27516
| | - Wayne D. Rosamond
- 123 West Franklin Street, Suite 410, Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27516
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4
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Heffernan E, Keegan D, Clarke B, Deasy C, O'Donnell C, Crowley P, Hughes A, Murphy AW, Masterson S. Quality improvement in a crisis: a qualitative study of experiences and lessons learned from the Irish National Ambulance Service response to the COVID-19 pandemic. BMJ Open 2022; 12:e057162. [PMID: 35039304 PMCID: PMC8765025 DOI: 10.1136/bmjopen-2021-057162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES The COVID-19 pandemic has produced radical changes in international health services. In Ireland, the National Ambulance Service established a novel home and community testing service that was central to the national COVID-19 screening programme. This service was overseen by a multidisciplinary response room. This research examined the response room service, particularly areas that performed well and areas requiring improvement, using a quality improvement (QI) framework. DESIGN This was a qualitative study comprising semi-structured, individual interviews. Maximum variation sampling was used. The data were analysed using an established thematic analysis procedure. The analysis was guided by the framework, which comprised six QI drivers. SETTING Response room employees, including clinicians, dispatchers and administrators, were interviewed via telephone. RESULTS Leadership for quality: participants valued person-oriented leadership, including regular, open communication and consultation with staff. Person/family engagement: participants endeavoured to provide patient-centred care. Formal patient feedback mechanisms and shared decision-making could be beneficial in the future. Staff engagement: working in a response room could affect well-being, though it also provided networking and learning opportunities. Staff require support and teambuilding. Use of improvement methods: improvements were made in a relatively informal, ad hoc manner. The use of robust methods based on improvement science was not reported. Measurement for quality: data were collected to improve efficiency and accuracy. More rigorous measurement would be beneficial, especially formally collecting stakeholder feedback. Governance for quality: close alignment with collaborators and clear communication with staff are essential. Information and communications technology for quality: this seventh driver was added because the importance of information technology specially designed for pandemics was frequently highlighted. CONCLUSIONS The study provides insights on what worked well and what required improvement in a pandemic response room. It can inform health services, particularly emergency services, in their preparation for additional COVID-19 waves, as well as future crises.
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Affiliation(s)
- Eithne Heffernan
- Discipline of General Practice, Clinical Science Institute, School of Medicine, National University of Ireland Galway, Galway, Ireland
| | - Dylan Keegan
- Discipline of General Practice, Clinical Science Institute, School of Medicine, National University of Ireland Galway, Galway, Ireland
| | - Bridget Clarke
- National Ambulance Service, Health Service Executive, Dublin, Ireland
| | - Conor Deasy
- National Ambulance Service, Health Service Executive, Dublin, Ireland
- Department of Emergency Medicine, Cork University Hospital, Cork, Ireland
| | - Cathal O'Donnell
- Clinical Directorate, National Ambulance Service, Health Service Executive, Limerick, Ireland
| | | | - Angela Hughes
- Quality Improvement Division, Health Service Executive, Dublin, Ireland
| | - Andrew W Murphy
- Discipline of General Practice, Clinical Science Institute, School of Medicine, National University of Ireland Galway, Galway, Ireland
| | - Siobhán Masterson
- Discipline of General Practice, Clinical Science Institute, School of Medicine, National University of Ireland Galway, Galway, Ireland
- Clinical Directorate, National Ambulance Service, Health Service Executive, Limerick, Ireland
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5
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Smith CM, Lall R, Fothergill RT, Spaight R, Perkins GD. The effect of the GoodSAM volunteer first-responder app on survival to hospital discharge following out-of-hospital cardiac arrest. EUROPEAN HEART JOURNAL. ACUTE CARDIOVASCULAR CARE 2022; 11:20-31. [PMID: 35024801 PMCID: PMC8757292 DOI: 10.1093/ehjacc/zuab103] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 10/08/2021] [Accepted: 10/26/2021] [Indexed: 11/13/2022]
Abstract
AIMS Bystander cardiopulmonary resuscitation and defibrillation can double survival to hospital discharge in out-of-hospital cardiac arrest. Mobile phone applications, such as GoodSAM, alerting nearby volunteer first-responders about out-of-hospital cardiac arrest could potentially improve bystander cardiopulmonary resuscitation and defibrillation, leading to better patient outcomes. The aim of this study was to determine GoodSAM's effect on survival to hospital discharge following out-of-hospital cardiac arrest. METHODS AND RESULTS We collected data from the Out-of-Hospital Cardiac Arrest Outcomes Registry (University of Warwick, UK) submitted by the London Ambulance Service (1 April 2016 to 31 March 2017) and East Midlands Ambulance Service (1 January 2018 to 17 June 2018) and matched out-of-hospital cardiac arrests to GoodSAM alerts. We constructed logistic regression models to determine if there was an association between a GoodSAM first-responder accepting an alert and survival to hospital discharge, adjusting for location type, presenting rhythm, age, gender, ambulance service response time, cardiac arrest witnessed status, and bystander actions. Survival to hospital discharge was 9.6% (393/4196) in London and 7.2% (72/1001) in East Midlands. A GoodSAM first-responder accepted an alert for out-of-hospital cardiac arrest in 1.3% (53/4196) cases in London and 5.4% (51/1001) cases in East Midlands. When a responder accepted an alert, the adjusted odds ratio for survival to hospital discharge was 3.15 (95% CI: 1.19-8.36, P = 0.021) in London and 3.19 (95% CI: 1.17-8.73, P = 0.024) in East Midlands. CONCLUSION Alert acceptance was associated with improved survival in both ambulance services. Alert acceptance rates were low, and challenges remain to maximize the potential benefit of GoodSAM.
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Affiliation(s)
- Christopher M Smith
- Warwick Clinical Trials Unit, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Ranjit Lall
- Warwick Clinical Trials Unit, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Rachael T Fothergill
- Warwick Clinical Trials Unit, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK.,Clinical Audit and Research Unit, London Ambulance Service NHS Trust, 8-20 Pocock Street, London SE1 8SD, UK
| | - Robert Spaight
- East Midlands Ambulance Service NHS Trust, 1 Horizon Place, Mellors Way, Nottingham NG8 6PY, UK
| | - Gavin D Perkins
- Warwick Clinical Trials Unit, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
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6
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Allan KS, O'Neil E, Currie MM, Lin S, Sapp JL, Dorian P. Responding to Cardiac Arrest in the Community in the Digital Age. Can J Cardiol 2021; 38:491-501. [PMID: 34954009 DOI: 10.1016/j.cjca.2021.12.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/14/2021] [Accepted: 12/14/2021] [Indexed: 01/25/2023] Open
Abstract
Sudden cardiac arrest (SCA) is a common event, affecting almost 400,000 individuals annually in North America. Initiation of cardiopulmonary resuscitation (CPR) and early defibrillation using an automated external defibrillator (AED) are critical for survival, yet many bystanders are reluctant to intervene. Digital technologies, including mobile devices, social media and crowdsourcing may help play a role to improve survival from SCA. In this article we review the current digital tools and strategies available to increase rates of bystander recognition of SCA, prompt immediate activation of Emergency Medical Services (EMS), initiate high quality CPR and to locate, retrieve and operate AEDs. Smartphones can help to both educate and connect bystanders with EMS dispatchers, through text messaging or video-calling, to encourage the initiation of CPR and retrieval of the closest AED. Wearable devices and household smartspeakers could play a future role in continuous vital signs monitoring in individuals at-risk of lethal arrhythmias and send an alert to either chosen contacts or EMS. Machine learning algorithms and mathematical modeling may aid EMS dispatchers with better recognition of SCA as well as policymakers with where to best place AEDs for optimal accessibility. There are challenges with the use of digital tech, including the need for government regulation and issues with data ownership, accessibility and interoperability. Future research will include smart cities, e-linkages, new technologies and using social media for mass education. Together or in combination, these emerging digital technologies may represent the next leap forward in SCA survival.
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Affiliation(s)
- Katherine S Allan
- Division of Cardiology, Unity Health Toronto - St. Michael's Hospital, Toronto, Ontario, Canada.
| | - Emma O'Neil
- Department of Emergency Medicine, Unity Health Toronto - St. Michael's Hospital, Toronto, Ontario, Canada
| | - Margaret M Currie
- Faculty of Science, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Steve Lin
- Department of Emergency Medicine, Unity Health Toronto - St. Michael's Hospital, Toronto, Ontario, Canada; Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario Canada; Department of Medicine, University of Toronto, Toronto, Ontario, Canada; Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - John L Sapp
- Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada; Queen Elizabeth II Health Sciences Centre, Halifax, Nova Scotia, Canada
| | - Paul Dorian
- Division of Cardiology, Unity Health Toronto - St. Michael's Hospital, Toronto, Ontario, Canada; Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario Canada; Department of Medicine, University of Toronto, Toronto, Ontario, Canada
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7
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"Motorcycle Ambulance" Policy to Promote Health and Sustainable Development in Large Cities. Prehosp Disaster Med 2021; 37:78-83. [PMID: 34913423 DOI: 10.1017/s1049023x21001345] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
INTRODUCTION Motorcycles can be considered a new form of smart vehicle when taking into account their small and modern structure and due to the fact that nowadays, they are used in the new role of ambulance to rapidly reach emergency patients in large cities with traffic congestion. However, there is no study regarding the measuring of access time for motorcycle ambulances (motorlances) in large cities of Thailand. STUDY OBJECTIVE This study aims to compare access times to patients between motorlances and conventional ambulances, including analysis of the use of automated external defibrillators (AEDs) installed on motorlances to contribute to the sustainable development of public health policies. METHODS A cross-sectional study was conducted on all motorlance operations in Emergency Medical Services (EMS) at Srinagarind Hospital, Thailand from January 2019 through December 2020. Data were recorded using a national standard operation record form for Thailand. RESULTS Two hundred seventy-one motorlance operations were examined over a two-year period. A total of 52.4% (N = 142) of the patients were male. The average times from dispatch to vehicle (motorlance and traditional ambulance) being en route (activation time) for motorlance and ambulance in afternoon shift were 0.59 minutes and 1.45 minutes, respectively (P = .004). The average motorlance response time in the afternoon shift was 6.12 minutes, and ambulance response time was 9.10 minutes at the same shift. Almost all of the motorlance operations (97.8%) were found to have no access to AED equipment installed in public areas. The average time from dispatch to AED arrival on scene (AED access time) was 5.02 minutes. CONCLUSION The response time of motorlances was shorter than a conventional ambulance, and the use of AEDs on a motorlance can increase the chances of survival for patients with cardiac arrest outside the hospital in public places where AEDs are not available.
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McGuigan K, Hill A, McCay D, O’Kane M, Coates V. Overcoming Barriers to Injectable Therapies: Development of the ORBIT Intervention Within a Behavioural Change Framework. FRONTIERS IN CLINICAL DIABETES AND HEALTHCARE 2021; 2:792634. [PMID: 36994326 PMCID: PMC10012154 DOI: 10.3389/fcdhc.2021.792634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Accepted: 11/23/2021] [Indexed: 11/13/2022]
Abstract
It is estimated among individuals with type 2 diabetes (T2D) requiring injectable therapies to achieve optimal glycaemic control, one-third are reluctant to initiate therapies, with approximately 80% choosing to discontinue or interrupt injectable regimens soon after commencement. Initiation of injectables is a complex issue, with effectiveness of such treatments undermined by non-adherence or poor engagement. Poor engagement and adherence are attributed to psychological aspects such as individuals’ negative perceptions of injectables, depression, anxiety, feelings of shame, distress and perceived lack of control over their condition. The aim of this study was to describe the development of a structured diabetes intervention to address psychological barriers to injectable treatments among a cohort of those with T2D; conducted within a behavioural change framework. An evidence base was developed to inform on key psychological barriers to injectable therapies. A systematic review highlighted the need for theory-based, structured diabetes education focussed on associated psychological constructs to inform effective, patient-centric provisions to improve injectable initiation and persistence. Findings from the focus groups with individuals who had recently commenced injectable therapies, identified patient-centric barriers to initiation and persistence with injectables. Findings from the systematic review and focus groups were translated via Behavioural Change Wheel (BCW) framework to develop an intervention for people with T2D transitioning to injectable therapies: Overcoming and Removing Barriers to Injectable Treatment in T2D (ORBIT). This article describes how psychological barriers informed the intervention with these mapped onto relevant components, intervention functions and selected behaviour change techniques, and finally aligned with behaviour change techniques. This article outlines the systematic approach to intervention development within the BCW framework; guiding readers through the practical application of each stage. The use of the BCW framework has ensured the development of the intervention is theory driven, with the research able to be evaluated and validated through replication due to the clarity around processes and tasks completed at each stage.
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Affiliation(s)
- Karen McGuigan
- School of Nursing and Midwifery, Queen’s University Belfast, Belfast, United Kingdom
- *Correspondence: Karen McGuigan,
| | - Alyson Hill
- School of Biomedical Sciences (NICHE), Ulster University, Coleraine, United Kingdom
| | - Deirdre McCay
- School of Biomedical Sciences (NICHE), Ulster University, Coleraine, United Kingdom
| | - Maurice O’Kane
- Western Health & Social Care Trust, Londonderry, United Kingdom
| | - Vivien Coates
- Western Health & Social Care Trust, Londonderry, United Kingdom
- School of Nursing, Ulster University, Coleraine, United Kingdom
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9
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Smith CM, Lall R, Spaight R, Fothergill RT, Brown T, Perkins GD. Calculating real-world travel routes instead of straight-line distance in the community response to out-of-hospital cardiac arrest. Resusc Plus 2021; 8:100176. [PMID: 34816140 PMCID: PMC8592858 DOI: 10.1016/j.resplu.2021.100176] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 11/28/2022] Open
Abstract
In out-of-hospital cardiac arrest, straight-line distance estimates substantially underestimated actual travel distance for bystanders retrieving a nearby public-access AED and for volunteer first-responders travelling to the scene. Using real-world travel estimates changed the identity of the nearest public-access AED in more than a quarter of out-of-hospital cardiac arrests.
Background Using straight-line distance to estimate the proximity of public-access Automated External Defibrillators (AEDs) or volunteer first-responders to potential out-of-hospital cardiac arrests (OHCAs) does not reflect real-world travel distance. The difference between estimates may be an important consideration for bystanders and first-responders responding to OHCAs and may potentially impact patient outcome. Objectives To explore how calculating real-world travel routes instead of using straight-line distance estimates might impact the community response to OHCA. Methods We mapped 4355 OHCA (01/04/2016-31/03/2017) and 2677 AEDs in London (UK), and 1263 OHCA (18/06/2017-17/06/2018) and 4704 AEDs in East Midlands (UK) using ArcGIS mapping software. We determined the distance from OHCAs to the nearest AED using straight-line estimates and real-world travel routes. We mapped locations of potential OHCAs (London: n = 9065, 20/09/2019-22/03/2020; East Midlands: n = 7637, 20/09/2019-17/03/2020) for which volunteer first-responders were alerted by the GoodSAM mobile-phone app, and calculated response distance using straight-line estimates and real-world travel routes. We created Receiver Operating Characteristic (ROC) curves and calculated the Area Under the Curve (AUC) to determine if travel distance predicted whether or not a responder accepted an alert. Results Real-world travel routes to the nearest AED were (median) 219 m longer (623 m vs 406 m) than straight-line estimates in London, and 211 m longer (568 m vs 357 m) in East Midlands. The identity of the nearest AED changed on 26% occasions in both areas when calculating real-world travel routes. GoodSAM responders’ real-world travel routes were (median) 222 m longer (601 m vs 379 m) in London, and 291 m longer (814 m vs 523 m) in East Midlands. AUC statistics for both areas demonstrated that neither straight-line nor real-world travel distance predicted whether or not a responder accepted an alert. Conclusions Calculating real-world travel routes increases the estimated travel distance and time for those responding to OHCAs. Calculating straight-line distance may overestimate the benefit of the community response to OHCA.
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Affiliation(s)
| | - Ranjit Lall
- Warwick Clinical Trials Unit, University of Warwick, Coventry CV4 7AL, UK
| | - Robert Spaight
- East Midlands Ambulance Service NHS Trust, Nottingham NG8 6PY, UK
| | - Rachael T Fothergill
- Warwick Clinical Trials Unit, University of Warwick, Coventry CV4 7AL, UK.,Clinical Audit and Research Unit, London Ambulance Service NHS Trust, London SE1 8SD, UK
| | - Terry Brown
- Warwick Clinical Trials Unit, University of Warwick, Coventry CV4 7AL, UK
| | - Gavin D Perkins
- Warwick Clinical Trials Unit, University of Warwick, Coventry CV4 7AL, UK
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10
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Brown TP, Perkins GD, Smith CM, Deakin CD, Fothergill R. Are there disparities in the location of automated external defibrillators in England? Resuscitation 2021; 170:28-35. [PMID: 34757059 PMCID: PMC8786665 DOI: 10.1016/j.resuscitation.2021.10.037] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 10/11/2021] [Accepted: 10/24/2021] [Indexed: 11/10/2022]
Abstract
Background Early defibrillation is an essential element of the chain of survival for out-of-hospital cardiac arrest (OHCA). Public access defibrillation (PAD) programmes aim to place automated external defibrillators (AED) in areas with high OHCA incidence, but there is sometimes a mismatch between AED density and OHCA incidence. Objectives This study aimed to assess whether there were any disparities in the characteristics of areas that have an AED and those that do not in England. Methods Details of the location of AEDs registered with English Ambulance Services were obtained from individual services or internet sources. Neighbourhood characteristics of lower layer super output areas (LSOA) were obtained from the Office for National Statistics. Comparisons were made between LSOAs with and without a registered AED. Results AEDs were statistically more likely to be in LSOAs with a lower residential but higher workplace population density, with people predominantly from a white ethnic background and working in higher socio-economically classified occupations (p < 0.05). There was a significant correlation between AED coverage and the LSOA Index of Multiple Deprivation (IMD) (r = 0.79, p = 0.007), with only 27.4% in the lowest IMD decile compared to about 45% in highest. AED density varied significantly across the country from 0.82/km2 in the north east to 2.97/km2 in London. Conclusions In England, AEDs were disproportionately placed in more affluent areas, with a lower residential population density. This contrasts with locations where OHCAs have previously occurred. Future PAD programmes should give preference to areas of higher deprivation and be tailored to the local community.
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Affiliation(s)
- Terry P Brown
- NIHR Applied Research Collaboration West Midlands, Clinical Trials Unit, University of Warwick, Coventry CV4 7AL, UK.
| | - Gavin D Perkins
- NIHR Applied Research Collaboration West Midlands, Clinical Trials Unit, University of Warwick, Coventry CV4 7AL, UK; Warwick Clinical Trials Unit, University of Warwick, Coventry CV4 7AL, UK
| | | | - Charles D Deakin
- South Central Ambulance Service NHS Foundation Trust, Otterbourne, Winchester SO21 2RU, UK; University Hospital Southampton NHS Foundation Trust, Southampton S16 6YD, UK
| | - Rachael Fothergill
- Clinical Audit & Research Unit, Clinical & Quality Directorate, London Ambulance Service NHS Trust, HQ Annexe, 8-20 Pocock Street, London SE1 0BW, UK
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11
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Development of a Digital Lifestyle Modification Intervention for Use after Transient Ischaemic Attack or Minor Stroke: A Person-Based Approach. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18094861. [PMID: 34063298 PMCID: PMC8124154 DOI: 10.3390/ijerph18094861] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/26/2021] [Accepted: 04/28/2021] [Indexed: 12/18/2022]
Abstract
This paper describes the development of the ‘Brain-Fit’ app, a digital secondary prevention intervention designed for use in the early phase after transient ischaemic attack (TIA) or minor stroke. The aim of the study was to explore perceptions on usability and relevance of the app in order to maximise user engagement and sustainability. Using the theory- and evidence-informed person-based approach, initial planning included a scoping review of qualitative evidence to identify barriers and facilitators to use of digital interventions in people with cardiovascular conditions and two focus groups exploring experiences and support needs of people (N = 32) with a history of TIA or minor stroke. The scoping review and focus group data were analysed thematically and findings were used to produce guiding principles, a behavioural analysis and explanatory logic model for the intervention. Optimisation included an additional focus group (N = 12) and individual think-aloud interviews (N = 8) to explore perspectives on content and usability of a prototype app. Overall, thematic analysis highlighted uncertainty about increasing physical activity and concerns that fatigue might limit participation. Realistic goals and progressive increases in activity were seen as important to improving self-confidence and personal control. The app was seen as a useful and flexible resource. Participant feedback from the optimisation phase was used to make modifications to the app to maximise engagement, including simplification of the goal setting and daily data entry sections. Further studies are required to examine efficacy and cost-effectiveness of this novel digital intervention.
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Smith JE, Leech C. Time matters but getting the basics right is key to survival in out-of-hospital cardiac arrest. Emerg Med J 2021; 38:569-570. [PMID: 33731421 DOI: 10.1136/emermed-2021-211415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 03/10/2021] [Indexed: 11/03/2022]
Affiliation(s)
- Jason E Smith
- Emergency Department, University Hospitals Plymouth NHS Trust, Plymouth, UK .,Academic Department of Military Emergency Medicine, Royal Centre for Defence Medicine, Birmingham, UK
| | - Caroline Leech
- Emergency Department, University Hospitals Coventry & Warwickshire NHS Trust, Coventry, UK
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