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Seidenfaden SC, Pedersen CK, Juul N, Kirkegaard H, Bøtker MT. Patients suffering traumatic brain injury: patient characteristics, prehospital triage, primary referral and mortality - A population-based follow-up study. Scand J Trauma Resusc Emerg Med 2024; 32:58. [PMID: 38898534 PMCID: PMC11186223 DOI: 10.1186/s13049-024-01229-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 06/04/2024] [Indexed: 06/21/2024] Open
Abstract
BACKGROUND Traumatic brain injury (TBI) is a potential high-risk condition, but appropriate care pathways, including prehospital triage and primary referral to a specialised neurosurgical centre, can improve neurological outcome and survival. The care pathway starts with layman triage, wherein the patient or bystander decides whether to contact a general practitioner (GP) or emergency services (1-1-2 call) as an entryway into the health care system. The GP or 112-health care professional then decides on the level of urgency and dispatches emergency medical services (EMS) when needed. Finally, a decision is made regarding referral of the TBI patient to a specialised neurotrauma centre or a local hospital. Recent studies have shown that injuries are generally more severe in patients entering the health care system through EMS (112-calls) than through GPs; however, no information exists on whether mortality and morbidity outcomes differ depending on the referral choice. The aim of this study was to examine triage pathways, including the method of entry into the health care system, as well as patient characteristics and place of primary referral, to determine the associated 30-day and 1-year mortality rates in TBI patients with confirmed intracranial lesions. METHODS This retrospective observational population-based follow-up study was conducted in the Central Denmark Region from 1 February 2017 to 31 January 2019. We included all adult patients who contacted hospitals and were ascribed a predefined TBI ICD-10 diagnosis code in the Danish National Patient Register. The obtained TBI cohort was merged with prehospital data from the Prehospital Emergency Medical Services, Central Denmark Region, and vital status from the Danish Civil Registration System. Binary logistic regression analysis of mortality was conducted. In all patients with TBI (including concussions), the primary outcome was primary referral to a specialised centre based on mode of entry ('GP/HCP', '112-call' or 'Unreferred') into the health care system. In the subgroup of patients with confirmed intracranial lesions, the secondary outcomes were the relative risk of death at day 30 and 1 year based on the place of primary referral. RESULTS Of 5,257 first TBI hospital contacts of adult patients included in the cohort, 1,430 (27.2%) entered the health care system via 1-1-2 emergency medical calls. TBI patients triaged by 112-calls were more likely to receive the highest level of emergency response (15.6% vs. 50.3%; p < 0.001) and second-tier resources and were more frequently referred directly to a specialised centre than were patients entering through GPs or other health care personnel. In the subgroup of 1188/5257 (22.4%) patients with confirmed intracranial lesions, we found no difference in the risk ratio of 30 day (RR 1.04 (95%CI 0.65-1.63)) or 1 year (RR 0.96 (95%CI 0.72-1.25)) all-cause mortality between patients primarily referred to a regional hospital or to a specialised centre when adjusting for age, sex, comorbidities, antiplatelet/anticoagulant treatment and type of intracranial lesions. CONCLUSION TBI patients mainly enter the health system by contact with GPs or other health care professionals. However, patients entering through 112-calls are more frequently triaged directly to specialised centres. We were unable to demonstrate any significant difference in the adjusted 30-day and 1-year mortality based on e primary referral to a specialised centre. The inability to demonstrate an effect on mortality based on primary referral to a specialised centre may reflect a lack of clinical data in the registries used. Considerable differences may exist in nondocumented baseline characteristics (i.e., GCS, blood pressure and injury severity) between the groups and may limit conclusions about differences in mortality. Further research providing high-quality evidence on the effect of primary referral is needed to secure early neurosurgical interventions in TBI patients.
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Affiliation(s)
- Sophie-Charlott Seidenfaden
- Research & Development, Prehospital Emergency Medical Services, Central Denmark Region, Brendstrupgårdsvej 7, Aarhus N, Denmark.
- Department of Clinical Medicine, Aarhus University, Incuba Skejby, bld. 2, Palle Juul-Jensens Blvd. 82, Aarhus, Denmark.
- Department of Anaesthesiology, Randers Regional Hospital, Skovlyvej 15, Randers, Denmark.
| | - Claus Kjaer Pedersen
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Blvd. 99, Aarhus, Denmark
| | - Niels Juul
- Department of Anaesthesiology and Intensive Care, Section North, Neurointensive Care Unit, Aarhus University Hospital, Palle Jull-Jensens Blvd.161, Aarhus, Denmark
| | - Hans Kirkegaard
- Research & Development, Prehospital Emergency Medical Services, Central Denmark Region, Brendstrupgårdsvej 7, Aarhus N, Denmark
- Research Center for Emergency Medicine, Aarhus University Hospital, and Aarhus University, Palle Juul-Jensens Blvd. 99, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Incuba Skejby, bld. 2, Palle Juul-Jensens Blvd. 82, Aarhus, Denmark
| | - Morten Thingemann Bøtker
- Research & Development, Prehospital Emergency Medical Services, Central Denmark Region, Brendstrupgårdsvej 7, Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, Incuba Skejby, bld. 2, Palle Juul-Jensens Blvd. 82, Aarhus, Denmark
- Department of Anaesthesiology, Randers Regional Hospital, Skovlyvej 15, Randers, Denmark
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Mortality and Risk Factors in Isolated Traumatic Brain Injury Patients: A Prospective Cohort Study. J Surg Res 2022; 279:480-490. [PMID: 35842973 DOI: 10.1016/j.jss.2022.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 04/17/2022] [Accepted: 05/21/2022] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Outcomes in patients with isolated traumatic brain injury (iTBI) have not been evaluated comprehensively in low-income and middle-income countries. We aimed to study the in-hospital iTBI mortality and its associated risk factors in a prospective multicenter Indian trauma registry. METHODS Patients with iTBI (head and neck Abbreviated Injury Score ≥2 and other region Abbreviated Injury Score ≤2) were included. Study variables comprised age, gender, mechanism of injury, systolic blood pressure (SBP) at arrival, Glasgow Coma Scale (GCS) score - classified as mild (13-15), moderate (9-12), and severe (3-8), transfer status, and time to presentation at any participating hospital. A multivariable logistic regression was performed to assess the impact of these factors on 24-h and 30-d mortality following iTBI. RESULTS Among 5042 included patients, 24-h and 30-d in-hospital mortalities were 5.9% and 22.4%. On a regression analysis, 30-d mortality was associated with age ≥45 y (odds ratio [OR] = 2.1 [1.6-2.7]), railway injury mechanisms (OR = 2.1 [1.3-3.5]), SBP <90 mmHg (OR = 2.6 [1.6-4.1]), and moderate (OR = 3.8 [3.0-5.0]) to severe (OR = 21.1 [16.8-26.7]) iTBI based on GCS scores. 24-h mortality showed similar trends. Patients transferred to the participating hospitals from other centers had higher odds of 30-d mortality (OR = 1.4 [1.2-1.8]) compared to those arriving directly. Those who received neurosurgical intervention had lower odds of 24-h mortality (0.3 [0.2-0.4]). CONCLUSIONS Age ≥45 y, GCS score ≤12, and SBP <90 mmHg at arrival increased the risk of in-hospital mortality from iTBI.
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Williams J, Ker K, Roberts I, Shakur-Still H, Miners A. A cost-effectiveness and value of information analysis to inform future research of tranexamic acid for older adults experiencing mild traumatic brain injury. Trials 2022; 23:370. [PMID: 35505387 PMCID: PMC9066715 DOI: 10.1186/s13063-022-06244-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 03/28/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Tranexamic acid reduces head injury deaths in patients with CT scan evidence of intracranial bleeding after mild traumatic brain injury (TBI). However, the cost-effectiveness of tranexamic acid for people with mild TBI in the pre-hospital setting, prior to CT scanning, is uncertain. A large randomised controlled trial (CRASH-4) is planned to address this issue, but the economic justification for it has not been established. The aim of the analysis was to estimate the likelihood of tranexamic acid being cost-effective given current evidence, the treatment effects required for cost-effectiveness, and the expected value of performing further research. METHODS An early economic decision model compared usual care for mild TBI with and without tranexamic acid, for adults aged 70 and above. The evaluation was performed from a UK healthcare perspective over a lifetime time horizon, with costs reported in 2020 pounds (GBP) and outcomes reported as quality-adjusted life years (QALYs). All analyses used a £20,000 per QALY cost-effectiveness threshold. RESULTS In the base case analysis, tranexamic acid was associated with an incremental cost-effectiveness ratio of £4885 per QALY gained, but the likelihood of it being cost-effective was highly dependent on the all-cause mortality treatment effect. The value of perfect information was £22.4 million, and the value of perfect information for parameters that could be collected in a trial was £21.9 million. The all-cause mortality risk ratio for tranexamic acid and the functional outcomes following TBI had the most impact on cost-effectiveness. CONCLUSIONS There is a high degree of uncertainty in the cost-effectiveness of tranexamic acid for older adults experiencing mild TBI, meaning there is a high value of performing future research in the UK. The value in a global context is likely to be far higher.
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Affiliation(s)
- Jack Williams
- Department of Health Services Research and Policy, London School of Hygiene & Tropical Medicine, 15-17 Tavistock Place, London, WC1H 9SH, UK.
| | - Katharine Ker
- Clinical Trials Unit, London School of Hygiene & Tropical Medicine, Keppel Street, London, WC1E 7HT, UK
| | - Ian Roberts
- Clinical Trials Unit, London School of Hygiene & Tropical Medicine, Keppel Street, London, WC1E 7HT, UK
| | - Haleema Shakur-Still
- Clinical Trials Unit, London School of Hygiene & Tropical Medicine, Keppel Street, London, WC1E 7HT, UK
| | - Alec Miners
- Department of Health Services Research and Policy, London School of Hygiene & Tropical Medicine, 15-17 Tavistock Place, London, WC1H 9SH, UK
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Sewalt CA, Gravesteijn BY, Menon D, Lingsma HF, Maas AIR, Stocchetti N, Venema E, Lecky FE. Primary versus early secondary referral to a specialized neurotrauma center in patients with moderate/severe traumatic brain injury: a CENTER TBI study. Scand J Trauma Resusc Emerg Med 2021; 29:113. [PMID: 34348784 PMCID: PMC8340517 DOI: 10.1186/s13049-021-00930-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 07/27/2021] [Indexed: 11/23/2022] Open
Abstract
Background Prehospital care for patients with traumatic brain injury (TBI) varies with some emergency medical systems recommending direct transport of patients with moderate to severe TBI to hospitals with specialist neurotrauma care (SNCs). The aim of this study is to assess variation in levels of early secondary referral within European SNCs and to compare the outcomes of directly admitted and secondarily transferred patients. Methods Patients with moderate and severe TBI (Glasgow Coma Scale < 13) from the prospective European CENTER-TBI study were included in this study. All participating hospitals were specialist neuroscience centers. First, adjusted between-country differences were analysed using random effects logistic regression where early secondary referral was the dependent variable, and a random intercept for country was included. Second, the adjusted effect of early secondary referral on survival to hospital discharge and functional outcome [6 months Glasgow Outcome Scale Extended (GOSE)] was estimated using logistic and ordinal mixed effects models, respectively. Results A total of 1347 moderate/severe TBI patients from 53 SNCs in 18 European countries were included. Of these 1347 patients, 195 (14.5%) were admitted after early secondary referral. Secondarily referred moderate/severe TBI patients presented more often with a CT abnormality: mass lesion (52% vs. 34%), midline shift (54% vs. 36%) and acute subdural hematoma (77% vs. 65%). After adjusting for case-mix, there was a large European variation in early secondary referral, with a median OR of 1.69 between countries. Early secondary referral was not associated with functional outcome (adjusted OR 1.07, 95% CI 0.78–1.69), nor with survival at discharge (1.05, 0.58–1.90). Conclusions Across Europe, substantial practice variation exists in the proportion of secondarily referred TBI patients at SNCs that is not explained by case mix. Within SNCs early secondary referral does not seem to impact functional outcome and survival after stabilisation in a non-specialised hospital. Future research should identify which patients with TBI truly benefit from direct transportation. Supplementary Information The online version contains supplementary material available at 10.1186/s13049-021-00930-1.
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Affiliation(s)
- Charlie Aletta Sewalt
- Department of Public Health, Erasmus MC Medical Center, Postbus 2040, 3000 CA, Rotterdam, The Netherlands.
| | - Benjamin Yaël Gravesteijn
- Department of Public Health, Erasmus MC Medical Center, Postbus 2040, 3000 CA, Rotterdam, The Netherlands.,Department of Anesthesiology, Erasmus MC Medical Center, Rotterdam, The Netherlands
| | - David Menon
- Division of Anaesthesia, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK
| | - Hester Floor Lingsma
- Department of Public Health, Erasmus MC Medical Center, Postbus 2040, 3000 CA, Rotterdam, The Netherlands
| | - Andrew I R Maas
- Department of Neurosurgery, Antwerp University Hospital, and University of Antwerp, Edegem, Belgium
| | - Nino Stocchetti
- Department of Pathophysiology and Transplantation, Milan University, and Neuroscience ICU, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Esmee Venema
- Department of Public Health, Erasmus MC Medical Center, Postbus 2040, 3000 CA, Rotterdam, The Netherlands.,Department of Neurology, Erasmus MC Medical Center, Rotterdam, The Netherlands
| | - Fiona E Lecky
- Center for Urgent and Emergency Care Research (CURE), Health Services Research Section, School of Health and Related Research (ScHARR), University of Sheffield, Sheffield, UK
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Björklund MK, Cruickshank M, Lendrum RA, Gillies K. Randomised controlled trials in pre-hospital trauma: a systematic mapping review. Scand J Trauma Resusc Emerg Med 2021; 29:65. [PMID: 34001219 PMCID: PMC8127177 DOI: 10.1186/s13049-021-00880-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 04/21/2021] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Trauma is a leading cause of morbidity and mortality worldwide with about 5.8 million deaths globally and the leading cause of death in those aged 45 and younger. The pre-hospital phase of traumatic injury is particularly important as care received during this phase has effects on survival. The need for high quality clinical trials in this area has been recognised for several years as a key priority to improve the evidence base and, ultimately, clinical care in prehospital trauma. We aimed to systematically map the existing evidence base for pre-hospital trauma trials, to identify knowledge gaps and inform decisions about the future research agenda. METHODS A systematic mapping review was conducted first employing a search of key databases (MEDLINE, CINAHL, EMBASE, and Cochrane Library from inception to March 23rd 2020) to identify randomised controlled trials within the pre-hospital trauma and injury setting. The evidence 'map' identified and described the characteristics of included studies and compared these studies against existing priorities for research. Narrative description of studies informed by analysis of relevant data using descriptive statistics was completed. RESULTS Twenty-three eligible studies, including 10,405 participants across 14 countries, were identified and included in the systematic map. No clear temporal or geographical trends in publications were identified. Studies were categorised into six broad categories based on intervention type with evaluations of fluid therapy and analgesia making up 60% of the included trials. Overall, studies were heterogenous with regard to individual interventions within categories and outcomes reported. There was poor reporting across several studies. No studies reported patient involvement in the design or conduct of the trials. CONCLUSION This mapping review has highlighted that evidence from trials in prehospital trauma is sparse and where trials have been completed, the reporting is generally poor and study designs sub-optimal. There is a continued need, and significant scope, for improvement in a setting where high quality evidence has great potential to make a demonstrable impact on care and outcomes.
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Affiliation(s)
- Matilda K Björklund
- Health Services Research Unit, Health Sciences Building, Foresterhill, Aberdeen, UK
| | - Moira Cruickshank
- Health Services Research Unit, Health Sciences Building, Foresterhill, Aberdeen, UK
| | - Robbie A Lendrum
- NHS Lothian, Department of Anaesthesia, Critical Care and Pain Medicine, Royal Infirmary of Edinburgh, 51 Little France Crescent, Edinburgh, EH16 4SA, UK.,Bart's Health NHS Trust, Royal London Hospital, Whitechapel, London, E1 1BB, UK.,London's Air Ambulance, The Helipad, 17th Floor, Royal London Hospital, Whitechapel, London, E1 1BB, UK
| | - Katie Gillies
- Health Services Research Unit, Health Sciences Building, Foresterhill, Aberdeen, UK.
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Roberts I, Shakur-Still H, Aeron-Thomas A, Beaumont D, Belli A, Brenner A, Cargill M, Chaudhri R, Douglas N, Frimley L, Gilliam C, Geer A, Jamal Z, Jooma R, Mansukhani R, Miners A, Pott J, Prowse D, Shokunbi T, Williams J. Tranexamic acid to reduce head injury death in people with traumatic brain injury: the CRASH-3 international RCT. Health Technol Assess 2021; 25:1-76. [PMID: 33928903 PMCID: PMC8107835 DOI: 10.3310/hta25260] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Tranexamic acid safely reduces mortality in traumatic extracranial bleeding. Intracranial bleeding is common after traumatic brain injury and can cause brain herniation and death. We assessed the effects of tranexamic acid in traumatic brain injury patients. OBJECTIVE To assess the effects of tranexamic acid on death, disability and vascular occlusive events in traumatic brain injury patients. We also assessed cost-effectiveness. DESIGN Randomised trial and economic evaluation. Patients were assigned by selecting a numbered treatment pack from a box containing eight packs that were identical apart from the pack number. Patients, caregivers and those assessing outcomes were masked to allocation. All analyses were by intention to treat. We assessed the cost-effectiveness of tranexamic acid versus no treatment from a UK NHS perspective using the trial results and a Markov model. SETTING 175 hospitals in 29 countries. PARTICIPANTS Adults with traumatic brain injury within 3 hours of injury with a Glasgow Coma Scale score of ≤ 12 or any intracranial bleeding on computerised tomography scan, and no major extracranial bleeding, were eligible. INTERVENTION Tranexamic acid (loading dose 1 g over 10 minutes then infusion of 1 g over 8 hours) or matching placebo. MAIN OUTCOME MEASURES Head injury death in hospital within 28 days of injury in patients treated within 3 hours of injury. Secondary outcomes were early head injury deaths, all-cause and cause-specific mortality, disability, vascular occlusive events, seizures, complications and adverse events. RESULTS Among patients treated within 3 hours of injury (n = 9127), the risk of head injury death was 18.5% in the tranexamic acid group versus 19.8% in the placebo group (855/4613 vs. 892/4514; risk ratio 0.94, 95% confidence interval 0.86 to 1.02). In a prespecified analysis excluding patients with a Glasgow Coma Scale score of 3 or bilateral unreactive pupils at baseline, the results were 12.5% in the tranexamic acid group versus 14.0% in the placebo group (485/3880 vs. 525/3757; risk ratio 0.89, 95% confidence interval 0.80 to 1.00). There was a reduction in the risk of head injury death with tranexamic acid in those with mild to moderate head injury (166/2846 vs. 207/2769; risk ratio 0.78, 95% confidence interval 0.64 to 0.95), but in those with severe head injury (689/1739 vs. 685/1710; risk ratio 0.99, 95% confidence interval 0.91 to 1.07) there was no apparent reduction (p-value for heterogeneity = 0.030). Early treatment was more effective in mild and moderate head injury (p = 0.005), but there was no obvious impact of time to treatment in cases of severe head injury (p = 0.73). The risk of disability, vascular occlusive events and seizures was similar in both groups. Tranexamic acid is highly cost-effective for mild and moderate traumatic brain injury (base case of £4288 per quality-adjusted life-year gained). CONCLUSION Early tranexamic acid treatment reduces head injury deaths. Treatment is cost-effective for patients with mild or moderate traumatic brain injury, or those with both pupils reactive. FUTURE WORK Further trials should examine early tranexamic acid treatment in mild head injury. Research on alternative routes of administration is needed. LIMITATIONS Time to treatment may have been underestimated. TRIAL REGISTRATION Current Controlled Trials ISRCTN15088122, ClinicalTrials.gov NCT01402882, EudraCT 2011-003669-14, Pan African Clinical Trial Registry PACTR20121000441277. FUNDING The project was funded by the National Institute for Health Research (NIHR) Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 25, No. 26. See the NIHR Journals Library website for further project information. In addition, funding was provided by JP Moulton Charitable Trust, Joint Global Health Trials (Medical Research Council, Department for International Development and the Wellcome Trust). This project was funded by the NIHR Global Health Trials programme.
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Affiliation(s)
- Ian Roberts
- Clinical Trials Unit, London School of Hygiene & Tropical Medicine, London, UK
| | | | | | - Danielle Beaumont
- Clinical Trials Unit, London School of Hygiene & Tropical Medicine, London, UK
| | - Antonio Belli
- National Institute for Health Research Surgical Reconstruction and Microbiology Research Centre, Queen Elizabeth Hospital, Birmingham, UK
| | - Amy Brenner
- Clinical Trials Unit, London School of Hygiene & Tropical Medicine, London, UK
| | - Madeleine Cargill
- Clinical Trials Unit, London School of Hygiene & Tropical Medicine, London, UK
| | - Rizwana Chaudhri
- Department of Obstetrics and Gynaecology, Rawalpindi Medical University, Rawalpinidi, Pakistan
| | - Nicolas Douglas
- Department of Health Services Research and Policy, London School of Hygiene & Tropical Medicine, London, UK
| | - Lauren Frimley
- Clinical Trials Unit, London School of Hygiene & Tropical Medicine, London, UK
| | - Catherine Gilliam
- Clinical Trials Unit, London School of Hygiene & Tropical Medicine, London, UK
| | - Amber Geer
- Clinical Trials Unit, London School of Hygiene & Tropical Medicine, London, UK
| | - Zahra Jamal
- Clinical Trials Unit, London School of Hygiene & Tropical Medicine, London, UK
| | - Rashid Jooma
- Department of Surgery, The Aga Khan University Medical College, Karachi, Pakistan
| | - Raoul Mansukhani
- Clinical Trials Unit, London School of Hygiene & Tropical Medicine, London, UK
| | - Alec Miners
- Department of Health Services Research and Policy, London School of Hygiene & Tropical Medicine, London, UK
| | - Jason Pott
- Emergency Department, Barts Health NHS Trust, The Royal London Hospital, London, UK
| | - Danielle Prowse
- Clinical Trials Unit, London School of Hygiene & Tropical Medicine, London, UK
| | - Temitayo Shokunbi
- Department of Anatomy and Surgery, University of Ibadan, Ibadan, Nigeria
| | - Jack Williams
- Department of Health Services Research and Policy, London School of Hygiene & Tropical Medicine, London, UK
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Fuller GW, Keating S, Goodacre S, Herbert E, Perkins GD, Rosser A, Gunson I, Miller J, Ward M, Bradburn M, Thokala P, Harris T, Marsh MM, Scott AJ, Cooper C. Prehospital continuous positive airway pressure for acute respiratory failure: the ACUTE feasibility RCT. Health Technol Assess 2021; 25:1-92. [PMID: 33538686 DOI: 10.3310/hta25070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Acute respiratory failure is a life-threatening emergency. Standard prehospital management involves controlled oxygen therapy. Continuous positive airway pressure is a potentially beneficial alternative treatment; however, it is uncertain whether or not this treatment could improve outcomes in NHS ambulance services. OBJECTIVES To assess the feasibility of a large-scale pragmatic trial and to update an existing economic model to determine cost-effectiveness and the value of further research. DESIGN (1) An open-label, individual patient randomised controlled external pilot trial. (2) Cost-effectiveness and value-of-information analyses, updating an existing economic model. (3) Ancillary substudies, comprising an acute respiratory failure incidence study, an acute respiratory failure diagnostic agreement study, clinicians perceptions of a continuous positive airway pressure mixed-methods study and an investigation of allocation concealment. SETTING Four West Midlands Ambulance Service hubs, recruiting between August 2017 and July 2018. PARTICIPANTS Adults with respiratory distress and peripheral oxygen saturations below the British Thoracic Society's target levels were included. Patients with limited potential to benefit from, or with contraindications to, continuous positive airway pressure were excluded. INTERVENTIONS Prehospital continuous positive airway pressure (O-Two system, O-Two Medical Technologies Inc., Brampton, ON, Canada) was compared with standard oxygen therapy, titrated to the British Thoracic Society's peripheral oxygen saturation targets. Interventions were provided in identical sealed boxes. MAIN OUTCOME MEASURES Feasibility objectives estimated the incidence of eligible patients, the proportion recruited and allocated to treatment appropriately, adherence to allocated treatment, and retention and data completeness. The primary clinical end point was 30-day mortality. RESULTS Seventy-seven patients were enrolled (target 120 patients), including seven patients with a diagnosis for which continuous positive airway pressure could be ineffective or harmful. Continuous positive airway pressure was fully delivered to 74% of participants (target 75%). There were no major protocol violations/non-compliances. Full data were available for all key outcomes (target ≥ 90%). Thirty-day mortality was 27.3%. Of the 21 deceased participants, 14 (68%) either did not have a respiratory condition or had ceiling-of-treatment decision implemented that excluded hospital non-invasive ventilation and critical care. The base-case economic evaluation indicated that standard oxygen therapy was probably cost-effective (incremental cost-effectiveness ratio £5685 per quality-adjusted life-year), but there was considerable uncertainty (population expected value of perfect information of £16.5M). Expected value of partial perfect information analyses indicated that effectiveness of prehospital continuous positive airway pressure was the only important variable. The incidence rate of acute respiratory failure was 17.4 (95% confidence interval 16.3 to 18.5) per 100,000 persons per year. There was moderate agreement between the primary prehospital and final hospital diagnoses (Gwet's AC1 coefficient 0.56, 95% confidence interval 0.43 to 0.69). Lack of hospital awareness of the Ambulance continuous positive airway pressure (CPAP): Use, Treatment Effect and economics (ACUTE) trial, limited time to complete trial training and a desire to provide continuous positive airway pressure treatment were highlighted as key challenges by participating clinicians. LIMITATIONS During week 10 of recruitment, the continuous positive airway pressure arm equipment boxes developed a 'rattle'. After repackaging and redistribution, no further concerns were noted. A total of 41.4% of ambulance service clinicians not participating in the ACUTE trial indicated a difference between the control and the intervention arm trial boxes (115/278); of these clinician 70.4% correctly identified box contents. CONCLUSIONS Recruitment rate was below target and feasibility was not demonstrated. The economic evaluation results suggested that a definitive trial could represent value for money. However, limited compliance with continuous positive airway pressure and difficulty in identifying patients who could benefit from continuous positive airway pressure indicate that prehospital continuous positive airway pressure is unlikely to materially reduce mortality. FUTURE WORK A definitive clinical effectiveness trial of continuous positive airway pressure in the NHS is not recommended. TRIAL REGISTRATION Current Controlled Trials ISRCTN12048261. FUNDING This project was funded by the National Institute for Health Research (NIHR) Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 25, No. 7. See the NIHR Journals Library website for further project information.
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Affiliation(s)
- Gordon W Fuller
- Centre for Urgent and Emergency Care Research, School of Health and Related Research (ScHARR), University of Sheffield, Sheffield, UK
| | - Samuel Keating
- Clinical Trials Research Unit, School of Health and Related Research (ScHARR), University of Sheffield, Sheffield, UK
| | - Steve Goodacre
- Centre for Urgent and Emergency Care Research, School of Health and Related Research (ScHARR), University of Sheffield, Sheffield, UK
| | - Esther Herbert
- Clinical Trials Research Unit, School of Health and Related Research (ScHARR), University of Sheffield, Sheffield, UK
| | - Gavin D Perkins
- Warwick Clinical Trials Unit, University of Warwick, Coventry, UK
| | - Andy Rosser
- West Midlands Ambulance Service, Brierley Hill, UK
| | | | | | - Matthew Ward
- West Midlands Ambulance Service, Brierley Hill, UK
| | - Mike Bradburn
- Clinical Trials Research Unit, School of Health and Related Research (ScHARR), University of Sheffield, Sheffield, UK
| | - Praveen Thokala
- Health Economics and Decision Science, School of Health and Related Research (ScHARR), University of Sheffield, Sheffield, UK
| | - Tim Harris
- Centre for Neuroscience and Trauma, Blizard Institute, Queen Mary University of London, London, UK
| | - Margaret M Marsh
- Sheffield Emergency Care Forum, Royal Hallamshire Hospital, Sheffield, UK
| | - Alexander J Scott
- Clinical Trials Research Unit, School of Health and Related Research (ScHARR), University of Sheffield, Sheffield, UK
| | - Cindy Cooper
- Clinical Trials Research Unit, School of Health and Related Research (ScHARR), University of Sheffield, Sheffield, UK
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Stemerman R, Bunning T, Grover J, Kitzmiller R, Patel MD. Identifying Patient Phenotype Cohorts Using Prehospital Electronic Health Record Data. PREHOSP EMERG CARE 2021:1-14. [PMID: 33315497 DOI: 10.1080/10903127.2020.1859658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 12/01/2020] [Indexed: 10/22/2022]
Abstract
Objective: Emergency medical services (EMS) provide critical interventions for patients with acute illness and injury and are important in implementing prehospital emergency care research. Retrospective, manual patient record review, the current reference-standard for identifying patient cohorts, requires significant time and financial investment. We developed automated classification models to identify eligible patients for prehospital clinical trials using EMS clinical notes and compared model performance to manual review.Methods: With eligibility criteria for an ongoing prehospital study of chest pain patients, we used EMS clinical notes (n = 1208) to manually classify patients as eligible, ineligible, and indeterminate. We randomly split these same records into training and test sets to develop and evaluate machine-learning (ML) algorithms using natural language processing (NLP) for feature (variable) selection. We compared models to the manual classification to calculate sensitivity, specificity, accuracy, positive predictive value, and F1 measure. We measured clinical expert time to perform review for manual and automated methods.Results: ML models' sensitivity, specificity, accuracy, positive predictive value, and F1 measure ranged from 0.93 to 0.98. Compared to manual classification (N = 363 records), the automated method excluded 90.9% of records as ineligible and leaving only 33 records for manual review.Conclusions: Our ML derived approach demonstrates the feasibility of developing a high-performing, automated classification system using EMS clinical notes to streamline the identification of a specific cardiac patient cohort. This efficient approach can be leveraged to facilitate prehospital patient-trial matching, patient phenotyping (i.e. influenza-like illness), and create prehospital patient registries.
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Affiliation(s)
- Rachel Stemerman
- Received November 19, 2020 from Carolina Health Informatics Program, University of North Carolina, Chapel Hill, North Carolina (RS, RK); Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina (TB); Department of Emergency Medicine, University of North Carolina, Chapel Hill, North Carolina (JG, MDP) Revision received; accepted for publication December 1, 2020
| | - Thomas Bunning
- Received November 19, 2020 from Carolina Health Informatics Program, University of North Carolina, Chapel Hill, North Carolina (RS, RK); Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina (TB); Department of Emergency Medicine, University of North Carolina, Chapel Hill, North Carolina (JG, MDP) Revision received; accepted for publication December 1, 2020
| | - Joseph Grover
- Received November 19, 2020 from Carolina Health Informatics Program, University of North Carolina, Chapel Hill, North Carolina (RS, RK); Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina (TB); Department of Emergency Medicine, University of North Carolina, Chapel Hill, North Carolina (JG, MDP) Revision received; accepted for publication December 1, 2020
| | - Rebecca Kitzmiller
- Received November 19, 2020 from Carolina Health Informatics Program, University of North Carolina, Chapel Hill, North Carolina (RS, RK); Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina (TB); Department of Emergency Medicine, University of North Carolina, Chapel Hill, North Carolina (JG, MDP) Revision received; accepted for publication December 1, 2020
| | - Mehul D Patel
- Received November 19, 2020 from Carolina Health Informatics Program, University of North Carolina, Chapel Hill, North Carolina (RS, RK); Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina (TB); Department of Emergency Medicine, University of North Carolina, Chapel Hill, North Carolina (JG, MDP) Revision received; accepted for publication December 1, 2020
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9
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Williams J, Roberts I, Shakur-Still H, Lecky FE, Chaudhri R, Miners A. Cost-effectiveness analysis of tranexamic acid for the treatment of traumatic brain injury, based on the results of the CRASH-3 randomised trial: a decision modelling approach. BMJ Glob Health 2020; 5:e002716. [PMID: 32878899 PMCID: PMC7470492 DOI: 10.1136/bmjgh-2020-002716] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/18/2020] [Accepted: 06/24/2020] [Indexed: 12/11/2022] Open
Abstract
INTRODUCTION An estimated 69 million traumatic brain injuries (TBI) occur each year worldwide, with most in low-income and middle-income countries. The CRASH-3 randomised trial found that intravenous administration of tranexamic acid within 3 hours of injury reduces head injury deaths in patients sustaining a mild or moderate TBI. We examined the cost-effectiveness of tranexamic acid treatment for TBI. METHODS A Markov decision model was developed to assess the cost-effectiveness of treatment with and without tranexamic acid, in addition to current practice. We modelled the decision in the UK and Pakistan from a health service perspective, over a lifetime time horizon. We used data from the CRASH-3 trial for the risk of death during the trial period (28 days) and patient quality of life, and data from the literature to estimate costs and long-term outcomes post-TBI. We present outcomes as quality-adjusted life years (QALYs) and 2018 costs in pounds for the UK, and US dollars for Pakistan. Incremental cost-effectiveness ratios (ICER) per QALY gained were estimated, and compared with country specific cost-effective thresholds. Deterministic and probabilistic sensitivity analyses were also performed. RESULTS Tranexamic acid was highly cost-effective for patients with mild TBI and intracranial bleeding or patients with moderate TBI, at £4288 per QALY in the UK, and US$24 per QALY in Pakistan. Tranexamic acid was 99% and 98% cost-effective at the cost-effectiveness thresholds for the UK and Pakistan, respectively, and remained cost-effective across all deterministic sensitivity analyses. Tranexamic acid was even more cost-effective with earlier treatment administration. The cost-effectiveness for those with severe TBI was uncertain. CONCLUSION Early administration of tranexamic acid is highly cost-effective for patients with mild or moderate TBI in the UK and Pakistan, relative to the cost-effectiveness thresholds used. The estimated ICERs suggest treatment is likely to be cost-effective across all income settings globally.
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Affiliation(s)
- Jack Williams
- Health Services Research and Policy, London School of Hygiene & Tropical Medicine, London, UK
| | - Ian Roberts
- Clinical Trials Unit, London School of Hygiene & Tropical Medicine, London, UK
| | | | - Fiona E Lecky
- Centre for Urgent and Emergency Care Research, School of Health and Related Research, The University of Sheffield, Sheffield, UK
- Emergency Department, Salford Royal Hospital NHS Foundation Trust, Salford, Salford, UK
| | - Rizwana Chaudhri
- Holy Family Hospital, Rawalpindi Medical University, Rawalpindi, Pakistan
| | - Alec Miners
- Health Services Research and Policy, London School of Hygiene & Tropical Medicine, London, UK
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10
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Vats A, Roy D, Prasad MK. Direct versus indirect transfer for traumatic brain injury to James Cook University Hospital: a retrospective study. Ann R Coll Surg Engl 2020; 103:23-28. [PMID: 32820664 DOI: 10.1308/rcsann.2020.0180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Patients with traumatic brain injury are referred to the neurosurgical unit at James Cook University Hospital, Middlesbrough, either from local accident and emergency departments (direct transfer from the scene) or from other hospitals (indirect transfer). This study looked at the outcome in both groups. MATERIAL AND METHODS This was a retrospective observational study using trauma audit research network data for patients treated for traumatic brain injury at the neurosurgery department at the neurosurgical unit at James Cook University Hospital. RESULTS A total of 356 patients with traumatic brain injury were admitted under the care of neurosurgeons; 143 (40%) of these patients had a neurosurgical procedure. Of the patients undergoing a neurological procedure, 111 patients were transferred directly while 32 were indirect transfers; 213 patients were managed conservatively. Of those managed conservatively, 165 were transferred directly while 48 were indirect transfers. We compared the length of hospital stay and Glasgow Outcome Scale score for the patients based on whether they were conservatively managed or required surgery in the direct and indirect transfer groups. The difference in the length of stay in the surgical and conservative groups following direct and indirect transfer was insignificant (p = 0.07). The time to the operation in direct and indirect transfer was also not statistically significant (p = 0.06). CONCLUSION Patients are as safe, if not safer, by reaching the nearest trauma unit with facilities for resuscitation and imaging.
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Affiliation(s)
- A Vats
- James Cook University Hospital, Middlesbrough, UK
| | - D Roy
- James Cook University Hospital, Middlesbrough, UK
| | - M K Prasad
- James Cook University Hospital, Middlesbrough, UK
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11
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M Selveindran S, Tango T, Khan MM, Simadibrata DM, Hutchinson PJA, Brayne C, Hill C, Servadei F, Kolias AG, Rubiano AM, Joannides AJ, Shabani HK. Mapping global evidence on strategies and interventions in neurotrauma and road traffic collisions prevention: a scoping review. Syst Rev 2020; 9:114. [PMID: 32434551 PMCID: PMC7240915 DOI: 10.1186/s13643-020-01348-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 04/02/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Neurotrauma is an important global health problem. The largest cause of neurotrauma worldwide is road traffic collisions (RTCs), particularly in low- and middle-income countries (LMICs). Neurotrauma and RTCs are preventable, and many preventative interventions have been implemented over the last decades, especially in high-income countries (HICs). However, it is uncertain if these strategies are applicable globally due to variations in environment, resources, population, culture and infrastructure. Given this issue, this scoping review aims to identify, quantify and describe the evidence on approaches in neurotrauma and RTCs prevention, and ascertain contextual factors that influence their implementation in LMICs and HICs. METHODS A systematic search was conducted using five electronic databases (MEDLINE, EMBASE, CINAHL, Global Health on EBSCO host, Cochrane Database of Systematic Reviews), grey literature databases, government and non-government websites, as well as bibliographic and citation searching of selected articles. The extracted data were presented using figures, tables, and accompanying narrative summaries. The results of this review were reported using the PRISMA Extension for Scoping Reviews (PRISMA-ScR). RESULTS A total of 411 publications met the inclusion criteria, including 349 primary studies and 62 reviews. More than 80% of the primary studies were from HICs and described all levels of neurotrauma prevention. Only 65 papers came from LMICs, which mostly described primary prevention, focussing on road safety. For the reviews, 41 papers (66.1%) reviewed primary, 18 tertiary (29.1%), and three secondary preventative approaches. Most of the primary papers in the reviews came from HICs (67.7%) with 5 reviews on only LMIC papers. Fifteen reviews (24.1%) included papers from both HICs and LMICs. Intervention settings ranged from nationwide to community-based but were not reported in 44 papers (10.8%), most of which were reviews. Contextual factors were described in 62 papers and varied depending on the interventions. CONCLUSIONS There is a large quantity of global evidence on strategies and interventions for neurotrauma and RTCs prevention. However, fewer papers were from LMICs, especially on secondary and tertiary prevention. More primary research needs to be done in these countries to determine what strategies and interventions exist and the applicability of HIC interventions in LMICs.
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Affiliation(s)
- Santhani M Selveindran
- Department of Clinical Neurosciences, Addenbrooke’s Hospital, Cambridge, UK
- NIHR Global Health Research Group on Neurotrauma, University of Cambridge, Cambridge, UK
| | - Tamara Tango
- Faculty of Medicine, University of Indonesia, Depok, Jawa Barat Indonesia
| | - Muhammad Mukhtar Khan
- NIHR Global Health Research Group on Neurotrauma, University of Cambridge, Cambridge, UK
- Department of Neurosurgery, Northwest School of Medicine and Northwest General Hospital and Research Centre, Peshawar, Pakistan
| | | | - Peter J. A. Hutchinson
- Department of Clinical Neurosciences, Addenbrooke’s Hospital, Cambridge, UK
- NIHR Global Health Research Group on Neurotrauma, University of Cambridge, Cambridge, UK
| | - Carol Brayne
- NIHR Global Health Research Group on Neurotrauma, University of Cambridge, Cambridge, UK
- Institute of Public Health, University of Cambridge, Cambridge, UK
| | - Christine Hill
- NIHR Global Health Research Group on Neurotrauma, University of Cambridge, Cambridge, UK
- Institute of Public Health, University of Cambridge, Cambridge, UK
| | - Franco Servadei
- Department of Neurosurgery, Humanitas University and Research Hospital, Milan, Italy
- World Federation of Neurosurgical Societies, Nyon, Switzerland
| | - Angelos G. Kolias
- Department of Clinical Neurosciences, Addenbrooke’s Hospital, Cambridge, UK
- NIHR Global Health Research Group on Neurotrauma, University of Cambridge, Cambridge, UK
| | - Andres M. Rubiano
- NIHR Global Health Research Group on Neurotrauma, University of Cambridge, Cambridge, UK
- Department of Neurosurgery, Universidad El Bosque, Bogota, Colombia
| | - Alexis J. Joannides
- Department of Clinical Neurosciences, Addenbrooke’s Hospital, Cambridge, UK
- NIHR Global Health Research Group on Neurotrauma, University of Cambridge, Cambridge, UK
| | - Hamisi K. Shabani
- NIHR Global Health Research Group on Neurotrauma, University of Cambridge, Cambridge, UK
- Neurological Surgery Unit, Muhimbili Orthopaedic Institute and Muhimbili University College of Allied Health Sciences, Dar es Salaam, Tanzania
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12
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Mills EHA, Aasbjerg K, Hansen SM, Ringgren KB, Dahl M, Rasmussen BS, Torp-Pedersen C, Søgaard P, Kragholm K. Prehospital time and mortality in patients requiring a highest priority emergency medical response: a Danish registry-based cohort study. BMJ Open 2019; 9:e023049. [PMID: 31753864 PMCID: PMC6886969 DOI: 10.1136/bmjopen-2018-023049] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
OBJECTIVE To examine the association between time from emergency medical service vehicle dispatch to hospital arrival and 1-day and 30-day mortality. DESIGN Register-based cohort study. SETTING North Denmark Region (≈8000 km2, catchment population ≈600 000). PARTICIPANTS We included all highest priority dispatched ambulance transports in North Denmark Region in 2006-2012. INTERVENTIONS Using logistic regression and the g-formula approach, we examined the association between time from emergency dispatch to hospital arrival and mortality for presumed heart, respiratory, cerebrovascular and other presumed medical conditions, as well as traffic or other accidents, as classified by emergency dispatch personnel. MAIN OUTCOME MEASURES 1-day and 30-day mortality. RESULTS Among 93 167 individuals with highest priority ambulances dispatched, 1948 (2.1%) were dead before the ambulance arrived and 19 968 (21.4%) were transported to the hospital under highest priority (median total prehospital time from dispatch to hospital arrival 47 min (25%-75%: 35-60 min); 95th percentile 84 min). Among 18 709 with population data, 1-day mortality was 10.9% (n=2038), and was highest for patients with dyspnoea (20.4%) and lowest for patients with traffic accidents (2.8%). Thirty-day mortality was 18.3% and varied between 36.6% (patients with dyspnoea) and 3.7% (traffic accidents). One-day mortality was not associated with total prehospital time, except for presumed heart conditions, where longer prehospital time was associated with decreased mortality: adjusted OR for >60 min vs 0-30 min was 0.61 (95% CI 0.40 to 0.91). For patients with dyspnoea, OR for >60 min vs 0-30 min was 0.90 (95% CI 0.56 to 1.45), for presumed cerebrovascular conditions OR 1.41 (95% CI 0.53 to 3.78), for other presumed medical conditions OR 0.84 (95% CI 0.70 to 1.02), for traffic accidents OR 0.65 (95% CI 0.29 to 1.48) and for other accidents OR 0.84 (95% CI 0.47 to 1.51). Similar findings were found for 30-day mortality. CONCLUSIONS In this study, where time from emergency dispatch to hospital arrival mainly was <80 min, there was no overall relation between this prehospital time measure and mortality.
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Affiliation(s)
| | - Kristian Aasbjerg
- Department of Epidemiology and Biostatistics, Aalborg University Hospital, Aalborg, Denmark
| | - Steen Moeller Hansen
- Department of Epidemiology and Biostatistics, Aalborg University Hospital, Aalborg, Denmark
| | | | - Michael Dahl
- Department of Anaesthesiology and Intensive Care Medicine, Aalborg University Hospital, Aalborg, Denmark
| | - Bodil Steen Rasmussen
- Department of Anaesthesiology and Intensive Care Medicine, Aalborg University Hospital, Aalborg, Denmark
| | - Christian Torp-Pedersen
- Department of Cardiology and Clinical Research, Nordsjællands Hospital, Hillerød, Denmark
- Department of Cardiology, Aalborg University Hospital, Aalborg, Denmark
| | - Peter Søgaard
- Department of Cardiology, Aalborg University Hospital, Aalborg, Denmark
| | - Kristian Kragholm
- Department of Anaesthesiology and Intensive Care Medicine, Aalborg University Hospital, Aalborg, Denmark
- Department of Cardiology and Epidemiology/Biostatistics, Aalborg University Hospital, Aalborg, Denmark
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13
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Sewalt CA, Venema E, Wiegers EJA, Lecky FE, Schuit SCE, den Hartog D, Steyerberg EW, Lingsma HF. Trauma models to identify major trauma and mortality in the prehospital setting. Br J Surg 2019; 107:373-380. [PMID: 31503341 PMCID: PMC7079101 DOI: 10.1002/bjs.11304] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 03/31/2019] [Accepted: 06/08/2019] [Indexed: 11/11/2022]
Abstract
BACKGROUND Patients with major trauma might benefit from treatment in a trauma centre, but early identification of major trauma (Injury Severity Score (ISS) over 15) remains difficult. The aim of this study was to undertake an external validation of existing prognostic models for injured patients to assess their ability to predict mortality and major trauma in the prehospital setting. METHODS Prognostic models were identified through a systematic literature search up to October 2017. Injured patients transported by Emergency Medical Services to an English hospital from the Trauma Audit and Research Network between 2013 and 2016 were included. Outcome measures were major trauma (ISS over 15) and in-hospital mortality. The performance of the models was assessed in terms of discrimination (concordance index, C-statistic) and net benefit to assess the clinical usefulness. RESULTS A total of 154 476 patients were included to validate six previously proposed prediction models. Discriminative ability ranged from a C-statistic value of 0·602 (95 per cent c.i. 0·596 to 0·608) for the Mechanism, Glasgow Coma Scale, Age and Arterial Pressure model to 0·793 (0·789 to 0·797) for the modified Rapid Emergency Medicine Score (mREMS) in predicting in-hospital mortality (11 882 patients). Major trauma was identified in 52 818 patients, with discrimination from a C-statistic value of 0·589 (0·586 to 0·592) for mREMS to 0·735 (0·733 to 0·737) for the Kampala Trauma Score in predicting major trauma. None of the prediction models met acceptable undertriage and overtriage rates. CONCLUSION Currently available prehospital trauma models perform reasonably in predicting in-hospital mortality, but are inadequate in identifying patients with major trauma. Future research should focus on which patients would benefit from treatment in a major trauma centre.
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Affiliation(s)
- C A Sewalt
- Department of Public Health, Erasmus MC University Medical Centre, Rotterdam, the Netherlands
| | - E Venema
- Department of Public Health, Erasmus MC University Medical Centre, Rotterdam, the Netherlands.,Department of Neurology, Erasmus MC University Medical Centre, Rotterdam, the Netherlands
| | - E J A Wiegers
- Department of Public Health, Erasmus MC University Medical Centre, Rotterdam, the Netherlands
| | - F E Lecky
- School of Health and Related Research, Sheffield University, Salford Royal NHS Foundation Trust, Salford, UK.,Trauma Audit and Research Network, University of Manchester, Salford, UK
| | - S C E Schuit
- Department of Emergency Medicine, Erasmus MC University Medical Centre, Rotterdam, the Netherlands.,Department of Internal Medicine, Erasmus MC University Medical Centre, Rotterdam, the Netherlands
| | - D den Hartog
- Trauma Research Unit, Department of Surgery, Erasmus MC University Medical Centre, Rotterdam, the Netherlands
| | - E W Steyerberg
- Department of Public Health, Erasmus MC University Medical Centre, Rotterdam, the Netherlands.,Department of Biomedical Data Sciences, Leiden University Medical Centre, Leiden, the Netherlands
| | - H F Lingsma
- Department of Public Health, Erasmus MC University Medical Centre, Rotterdam, the Netherlands
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14
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Moore L, Champion H, Tardif PA, Kuimi BL, O'Reilly G, Leppaniemi A, Cameron P, Palmer CS, Abu-Zidan FM, Gabbe B, Gaarder C, Yanchar N, Stelfox HT, Coimbra R, Kortbeek J, Noonan VK, Gunning A, Gordon M, Khajanchi M, Porgo TV, Turgeon AF, Leenen L. Impact of Trauma System Structure on Injury Outcomes: A Systematic Review and Meta-Analysis. World J Surg 2018; 42:1327-1339. [PMID: 29071424 DOI: 10.1007/s00268-017-4292-0] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND The effectiveness of trauma systems in decreasing injury mortality and morbidity has been well demonstrated. However, little is known about which components contribute to their effectiveness. We aimed to systematically review the evidence of the impact of trauma system components on clinically important injury outcomes. METHODS We searched MEDLINE, EMBASE, Cochrane CENTRAL, and BIOSIS/Web of Knowledge, gray literature and trauma association Web sites to identify studies evaluating the association between at least one trauma system component and injury outcome. We calculated pooled effect estimates using inverse-variance random-effects models. We evaluated quality of evidence using GRADE criteria. RESULTS We screened 15,974 records, retaining 41 studies for qualitative synthesis and 19 for meta-analysis. Two recommended trauma system components were associated with reduced odds of mortality: inclusive design (odds ratio [OR] = 0.72 [0.65-0.80]) and helicopter transport (OR = 0.70 [0.55-0.88]). Pre-Hospital Advanced Trauma Life Support was associated with a significant reduction in hospital days (mean difference [MD] = 5.7 [4.4-7.0]) but a nonsignificant reduction in mortality (OR = 0.78 [0.44-1.39]). Population density of surgeons was associated with a nonsignificant decrease in mortality (MD = 0.58 [-0.22 to 1.39]). Trauma system maturity was associated with a significant reduction in mortality (OR = 0.76 [0.68-0.85]). Quality of evidence was low or very low for mortality and healthcare utilization. CONCLUSIONS This review offers low-quality evidence for the effectiveness of an inclusive design and trauma system maturity and very-low-quality evidence for helicopter transport in reducing injury mortality. Further research should evaluate other recommended components of trauma systems and non-fatal outcomes and explore the impact of system component interactions.
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Affiliation(s)
- Lynne Moore
- Department of Anesthesiology and Critical Care Medicine, Division of Critical Care Medicine, Université Laval, Québec, QC, Canada. .,Axe Santé des Populations et Pratiques Optimales en Santé (Population Health and Optimal Health Practices Research Unit), Traumatologie - Urgence - Soins intensifs (Trauma - Emergency - Critical Care Medicine), CHU de Québec - Université Laval Research Center (Enfant-Jésus Hospital), Québec, QC, Canada.
| | - Howard Champion
- Department of Surgery, University of the Health Sciences, Annapolis, MD, USA
| | - Pier-Alexandre Tardif
- Department of Anesthesiology and Critical Care Medicine, Division of Critical Care Medicine, Université Laval, Québec, QC, Canada.,Axe Santé des Populations et Pratiques Optimales en Santé (Population Health and Optimal Health Practices Research Unit), Traumatologie - Urgence - Soins intensifs (Trauma - Emergency - Critical Care Medicine), CHU de Québec - Université Laval Research Center (Enfant-Jésus Hospital), Québec, QC, Canada
| | - Brice-Lionel Kuimi
- Axe Santé des Populations et Pratiques Optimales en Santé (Population Health and Optimal Health Practices Research Unit), Traumatologie - Urgence - Soins intensifs (Trauma - Emergency - Critical Care Medicine), CHU de Québec - Université Laval Research Center (Enfant-Jésus Hospital), Québec, QC, Canada
| | - Gerard O'Reilly
- Emergency and Trauma Centre, The Alfred Hospital, Melbourne, Australia.,School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Ari Leppaniemi
- Abdominal Center, Helsinki University hospital, Helsinki, Finland
| | - Peter Cameron
- Emergency and Trauma Centre, The Alfred Hospital, Melbourne, Australia.,School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | | | - Fikri M Abu-Zidan
- Department of Surgery, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain, United Arab Emirates
| | - Belinda Gabbe
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Christine Gaarder
- Department of Traumatology, Oslo University Hospital Ulleval, Oslo, Norway
| | - Natalie Yanchar
- Department of Surgery, Dalhousie University, Halifax, NS, Canada
| | - Henry Thomas Stelfox
- Departments of Critical Care Medicine, Medicine and Community Health Sciences, O'Brien Institute for Public Health, University of Calgary, Calgary, Canada
| | - Raul Coimbra
- Division of Trauma, Surgical Critical Care, Burns, and Acute Care Surgery, University of California, San Diego Health System, San Diego, CA, USA
| | - John Kortbeek
- Department of Surgery, Division of General Surgery and Division of Critical Care, University of Calgary, Calgary, AB, Canada
| | | | - Amy Gunning
- Department of Surgery, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Malcolm Gordon
- Department of Emergency Medicine, University of Glasgow, Glasgow, UK
| | | | - Teegwendé V Porgo
- Department of Anesthesiology and Critical Care Medicine, Division of Critical Care Medicine, Université Laval, Québec, QC, Canada.,Axe Santé des Populations et Pratiques Optimales en Santé (Population Health and Optimal Health Practices Research Unit), Traumatologie - Urgence - Soins intensifs (Trauma - Emergency - Critical Care Medicine), CHU de Québec - Université Laval Research Center (Enfant-Jésus Hospital), Québec, QC, Canada
| | - Alexis F Turgeon
- Department of Anesthesiology and Critical Care Medicine, Division of Critical Care Medicine, Université Laval, Québec, QC, Canada.,Axe Santé des Populations et Pratiques Optimales en Santé (Population Health and Optimal Health Practices Research Unit), Traumatologie - Urgence - Soins intensifs (Trauma - Emergency - Critical Care Medicine), CHU de Québec - Université Laval Research Center (Enfant-Jésus Hospital), Québec, QC, Canada
| | - Luke Leenen
- Department of Surgery, University Medical Center Utrecht, Utrecht, The Netherlands
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15
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Synnot A, Bragge P, Lunny C, Menon D, Clavisi O, Pattuwage L, Volovici V, Mondello S, Cnossen MC, Donoghue E, Gruen RL, Maas A. The currency, completeness and quality of systematic reviews of acute management of moderate to severe traumatic brain injury: A comprehensive evidence map. PLoS One 2018; 13:e0198676. [PMID: 29927963 PMCID: PMC6013193 DOI: 10.1371/journal.pone.0198676] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 05/23/2018] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVE To appraise the currency, completeness and quality of evidence from systematic reviews (SRs) of acute management of moderate to severe traumatic brain injury (TBI). METHODS We conducted comprehensive searches to March 2016 for published, English-language SRs and RCTs of acute management of moderate to severe TBI. Systematic reviews and RCTs were grouped under 12 broad intervention categories. For each review, we mapped the included and non-included RCTs, noting the reasons why RCTs were omitted. An SR was judged as 'current' when it included the most recently published RCT we found on their topic, and 'complete' when it included every RCT we found that met its inclusion criteria, taking account of when the review was conducted. Quality was assessed using the AMSTAR checklist (trichotomised into low, moderate and high quality). FINDINGS We included 85 SRs and 213 RCTs examining the effectiveness of treatments for acute management of moderate to severe TBI. The most frequently reviewed interventions were hypothermia (n = 17, 14.2%), hypertonic saline and/or mannitol (n = 9, 7.5%) and surgery (n = 8, 6.7%). Of the 80 single-intervention SRs, approximately half (n = 44, 55%) were judged as current and two-thirds (n = 52, 65.0%) as complete. When considering only the most recently published review on each intervention (n = 25), currency increased to 72.0% (n = 18). Less than half of the 85 SRs were judged as high quality (n = 38, 44.7%), and nearly 20% were low quality (n = 16, 18.8%). Only 16 (20.0%) of the single-intervention reviews (and none of the five multi-intervention reviews) were judged as current, complete and high-quality. These included reviews of red blood cell transfusion, hypothermia, management guided by intracranial pressure, pharmacological agents (various) and prehospital intubation. Over three-quarters (n = 167, 78.4%) of the 213 RCTs were included in one or more SR. Of the remainder, 17 (8.0%) RCTs post-dated or were out of scope of existing SRs, and 29 (13.6%) were on interventions that have not been assessed in SRs. CONCLUSION A substantial number of SRs in acute management of moderate to severe TBI lack currency, completeness and quality. We have identified both potential evidence gaps and also substantial research waste. Novel review methods, such as Living Systematic Reviews, may ameliorate these shortcomings and enhance utility and reliability of the evidence underpinning clinical care.
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Affiliation(s)
- Anneliese Synnot
- Australian and New Zealand Intensive Care Research Centre (ANZIC-RC), School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
- National Trauma Research Institute, The Alfred, Monash University, Melbourne, Victoria, Australia
- Cochrane Australia, School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
- Cochrane Consumers and Communication, School of Psychology and Public Health, La Trobe University, Melbourne, Victoria, Australia
| | - Peter Bragge
- BehaviourWorks Australia, Monash Sustainable Development Institute, Monash University, Melbourne, Victoria, Australia
| | - Carole Lunny
- Cochrane Australia, School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
| | - David Menon
- Division of Anaesthesia, University of Cambridge; Neurosciences Critical Care Unit, Addenbrooke’s Hospital; Queens’ College, Cambridge, United Kingdom
| | - Ornella Clavisi
- National Trauma Research Institute, The Alfred, Monash University, Melbourne, Victoria, Australia
- MOVE: Muscle, Bone and Joint Health Ltd, Melbourne, Victoria, Australia
| | - Loyal Pattuwage
- National Trauma Research Institute, The Alfred, Monash University, Melbourne, Victoria, Australia
- Monash Centre for Occupational and Environmental Health (MonCOEH), Monash University, Melbourne, Victoria, Australia
| | - Victor Volovici
- Department of Public Health, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Department of Neurosurgery, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Stefania Mondello
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Messina, Italy
| | - Maryse C. Cnossen
- Center for Medical Decision Making, Department of Public Health, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Emma Donoghue
- Australian and New Zealand Intensive Care Research Centre (ANZIC-RC), School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
| | - Russell L. Gruen
- Nanyang Technical University, Singapore
- Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Andrew Maas
- Department of Neurosurgery, Antwerp University Hospital and University of Antwerp, Edegem, Belgium
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Maas AIR, Menon DK, Adelson PD, Andelic N, Bell MJ, Belli A, Bragge P, Brazinova A, Büki A, Chesnut RM, Citerio G, Coburn M, Cooper DJ, Crowder AT, Czeiter E, Czosnyka M, Diaz-Arrastia R, Dreier JP, Duhaime AC, Ercole A, van Essen TA, Feigin VL, Gao G, Giacino J, Gonzalez-Lara LE, Gruen RL, Gupta D, Hartings JA, Hill S, Jiang JY, Ketharanathan N, Kompanje EJO, Lanyon L, Laureys S, Lecky F, Levin H, Lingsma HF, Maegele M, Majdan M, Manley G, Marsteller J, Mascia L, McFadyen C, Mondello S, Newcombe V, Palotie A, Parizel PM, Peul W, Piercy J, Polinder S, Puybasset L, Rasmussen TE, Rossaint R, Smielewski P, Söderberg J, Stanworth SJ, Stein MB, von Steinbüchel N, Stewart W, Steyerberg EW, Stocchetti N, Synnot A, Te Ao B, Tenovuo O, Theadom A, Tibboel D, Videtta W, Wang KKW, Williams WH, Wilson L, Yaffe K, Adams H, Agnoletti V, Allanson J, Amrein K, Andaluz N, Anke A, Antoni A, van As AB, Audibert G, Azaševac A, Azouvi P, Azzolini ML, Baciu C, Badenes R, Barlow KM, Bartels R, Bauerfeind U, Beauchamp M, Beer D, Beer R, Belda FJ, Bellander BM, Bellier R, Benali H, Benard T, Beqiri V, Beretta L, Bernard F, Bertolini G, Bilotta F, Blaabjerg M, den Boogert H, Boutis K, Bouzat P, Brooks B, Brorsson C, Bullinger M, Burns E, Calappi E, Cameron P, Carise E, Castaño-León AM, Causin F, Chevallard G, Chieregato A, Christie B, Cnossen M, Coles J, Collett J, Della Corte F, Craig W, Csato G, Csomos A, Curry N, Dahyot-Fizelier C, Dawes H, DeMatteo C, Depreitere B, Dewey D, van Dijck J, Đilvesi Đ, Dippel D, Dizdarevic K, Donoghue E, Duek O, Dulière GL, Dzeko A, Eapen G, Emery CA, English S, Esser P, Ezer E, Fabricius M, Feng J, Fergusson D, Figaji A, Fleming J, Foks K, Francony G, Freedman S, Freo U, Frisvold SK, Gagnon I, Galanaud D, Gantner D, Giraud B, Glocker B, Golubovic J, Gómez López PA, Gordon WA, Gradisek P, Gravel J, Griesdale D, Grossi F, Haagsma JA, Håberg AK, Haitsma I, Van Hecke W, Helbok R, Helseth E, van Heugten C, Hoedemaekers C, Höfer S, Horton L, Hui J, Huijben JA, Hutchinson PJ, Jacobs B, van der Jagt M, Jankowski S, Janssens K, Jelaca B, Jones KM, Kamnitsas K, Kaps R, Karan M, Katila A, Kaukonen KM, De Keyser V, Kivisaari R, Kolias AG, Kolumbán B, Kolundžija K, Kondziella D, Koskinen LO, Kovács N, Kramer A, Kutsogiannis D, Kyprianou T, Lagares A, Lamontagne F, Latini R, Lauzier F, Lazar I, Ledig C, Lefering R, Legrand V, Levi L, Lightfoot R, Lozano A, MacDonald S, Major S, Manara A, Manhes P, Maréchal H, Martino C, Masala A, Masson S, Mattern J, McFadyen B, McMahon C, Meade M, Melegh B, Menovsky T, Moore L, Morgado Correia M, Morganti-Kossmann MC, Muehlan H, Mukherjee P, Murray L, van der Naalt J, Negru A, Nelson D, Nieboer D, Noirhomme Q, Nyirádi J, Oddo M, Okonkwo DO, Oldenbeuving AW, Ortolano F, Osmond M, Payen JF, Perlbarg V, Persona P, Pichon N, Piippo-Karjalainen A, Pili-Floury S, Pirinen M, Ple H, Poca MA, Posti J, Van Praag D, Ptito A, Radoi A, Ragauskas A, Raj R, Real RGL, Reed N, Rhodes J, Robertson C, Rocka S, Røe C, Røise O, Roks G, Rosand J, Rosenfeld JV, Rosenlund C, Rosenthal G, Rossi S, Rueckert D, de Ruiter GCW, Sacchi M, Sahakian BJ, Sahuquillo J, Sakowitz O, Salvato G, Sánchez-Porras R, Sándor J, Sangha G, Schäfer N, Schmidt S, Schneider KJ, Schnyer D, Schöhl H, Schoonman GG, Schou RF, Sir Ö, Skandsen T, Smeets D, Sorinola A, Stamatakis E, Stevanovic A, Stevens RD, Sundström N, Taccone FS, Takala R, Tanskanen P, Taylor MS, Telgmann R, Temkin N, Teodorani G, Thomas M, Tolias CM, Trapani T, Turgeon A, Vajkoczy P, Valadka AB, Valeinis E, Vallance S, Vámos Z, Vargiolu A, Vega E, Verheyden J, Vik A, Vilcinis R, Vleggeert-Lankamp C, Vogt L, Volovici V, Voormolen DC, Vulekovic P, Vande Vyvere T, Van Waesberghe J, Wessels L, Wildschut E, Williams G, Winkler MKL, Wolf S, Wood G, Xirouchaki N, Younsi A, Zaaroor M, Zelinkova V, Zemek R, Zumbo F. Traumatic brain injury: integrated approaches to improve prevention, clinical care, and research. Lancet Neurol 2017; 16:987-1048. [DOI: 10.1016/s1474-4422(17)30371-x] [Citation(s) in RCA: 822] [Impact Index Per Article: 117.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 07/06/2017] [Accepted: 09/27/2017] [Indexed: 12/11/2022]
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Ljungqvist J, Candefjord S, Persson M, Jönsson L, Skoglund T, Elam M. Clinical Evaluation of a Microwave-Based Device for Detection of Traumatic Intracranial Hemorrhage. J Neurotrauma 2017; 34:2176-2182. [PMID: 28287909 PMCID: PMC5510669 DOI: 10.1089/neu.2016.4869] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Traumatic brain injury (TBI) is the leading cause of death and disability among young persons. A key to improve outcome for patients with TBI is to reduce the time from injury to definitive care by achieving high triage accuracy. Microwave technology (MWT) allows for a portable device to be used in the pre-hospital setting for detection of intracranial hematomas at the scene of injury, thereby enhancing early triage and allowing for more adequate early care. MWT has previously been evaluated for medical applications including the ability to differentiate between hemorrhagic and ischemic stroke. The purpose of this study was to test whether MWT in conjunction with a diagnostic mathematical algorithm could be used as a medical screening tool to differentiate patients with traumatic intracranial hematomas, chronic subdural hematomas (cSDH), from a healthy control (HC) group. Twenty patients with cSDH and 20 HC were measured with a MWT device. The accuracy of the diagnostic algorithm was assessed using a leave-one-out analysis. At 100% sensitivity, the specificity was 75%—i.e., all hematomas were detected at the cost of 25% false positives (patients who would be overtriaged). Considering the need for methods to identify patients with intracranial hematomas in the pre-hospital setting, MWT shows promise as a tool to improve triage accuracy. Further studies are under way to evaluate MWT in patients with other intracranial hemorrhages.
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Affiliation(s)
- Johan Ljungqvist
- 1 Department of Neurosurgery, Sahlgrenska University Hospital , Gothenburg, Sweden .,2 Institute of Neuroscience and Physiology, Department of Clinical Neuroscience, The Sahlgrenska Academy at the University of Gothenburg , Gothenburg, Sweden
| | - Stefan Candefjord
- 3 Department of Signals and Systems, Chalmers University of Technology , Gothenburg, Sweden .,4 MedTech West, Sahlgrenska University Hospital , Gothenburg, Sweden .,5 SAFER Vehicle and Traffic Safety Centre at Chalmers , Gothenburg, Sweden
| | - Mikael Persson
- 3 Department of Signals and Systems, Chalmers University of Technology , Gothenburg, Sweden .,4 MedTech West, Sahlgrenska University Hospital , Gothenburg, Sweden
| | - Lars Jönsson
- 6 Department of Neuroradiology, Sahlgrenska University Hospital , Gothenburg, Sweden
| | - Thomas Skoglund
- 1 Department of Neurosurgery, Sahlgrenska University Hospital , Gothenburg, Sweden .,2 Institute of Neuroscience and Physiology, Department of Clinical Neuroscience, The Sahlgrenska Academy at the University of Gothenburg , Gothenburg, Sweden
| | - Mikael Elam
- 4 MedTech West, Sahlgrenska University Hospital , Gothenburg, Sweden .,7 Department of Clinical Neurophysiology, Sahlgrenska University Hospital , Gothenburg, Sweden
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Lawrence T, Helmy A, Bouamra O, Woodford M, Lecky F, Hutchinson PJ. Traumatic brain injury in England and Wales: prospective audit of epidemiology, complications and standardised mortality. BMJ Open 2016; 6:e012197. [PMID: 27884843 PMCID: PMC5168492 DOI: 10.1136/bmjopen-2016-012197] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 07/22/2016] [Accepted: 07/25/2016] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES To provide a comprehensive assessment of the management of traumatic brain injury (TBI) relating to epidemiology, complications and standardised mortality across specialist units. DESIGN The Trauma Audit and Research Network collects data prospectively on patients suffering trauma across England and Wales. We analysed all data collected on patients with TBI between April 2014 and June 2015. SETTING Data were collected on patients presenting to emergency departments across 187 hospitals including 26 with specialist neurosurgical services, incorporating factors previously identified in the Ps14 multivariate logistic regression (Ps14n) model multivariate TBI outcome prediction model. The frequency and timing of secondary transfer to neurosurgical centres was assessed. RESULTS We identified 15 820 patients with TBI presenting to neurosurgical centres directly (6258), transferred from a district hospital to a neurosurgical centre (3682) and remaining in a district general hospital (5880). The commonest mechanisms of injury were falls in the elderly and road traffic collisions in the young, which were more likely to present in coma. In severe TBI (Glasgow Coma Score (GCS) ≤8), the median time from admission to imaging with CT scan is 0.5 hours. Median time to craniotomy from admission is 2.6 hours and median time to intracranial pressure monitoring is 3 hours. The most frequently documented complication of severe TBI is bronchopneumonia in 5% of patients. Risk-adjusted W scores derived from the Ps14n model indicate that no neurosurgical unit fell outside the 3 SD limits on a funnel plot. CONCLUSIONS We provide the first comprehensive report of the management of TBI in England and Wales, including data from all neurosurgical units. These data provide transparency and suggests equity of access to high-quality TBI management provided in England and Wales.
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Affiliation(s)
- T Lawrence
- Trauma Audit and Research Network, Manchester Medical Academic Health Sciences Centre, Institute of Population Health, University of Manchester, Salford Royal Hospital, Salford, UK
| | - A Helmy
- Division of Neurosurgery, Department of Clinical Neuroscience, University of Cambridge, Cambridge, UK
- Department of Neurosurgery, Addenbrooke's Hospital, Cambridge, UK
| | - O Bouamra
- Trauma Audit and Research Network, Manchester Medical Academic Health Sciences Centre, Institute of Population Health, University of Manchester, Salford Royal Hospital, Salford, UK
| | - M Woodford
- Trauma Audit and Research Network, Manchester Medical Academic Health Sciences Centre, Institute of Population Health, University of Manchester, Salford Royal Hospital, Salford, UK
| | - F Lecky
- Centre for Urgent and Emergency Care Research (CURE), Health Services Research Section, School of Health and Related Research (ScHARR), University of Sheffield, Sheffield, UK
| | - P J Hutchinson
- Division of Neurosurgery, Department of Clinical Neuroscience, University of Cambridge, Cambridge, UK
- Department of Neurosurgery, Addenbrooke's Hospital, Cambridge, UK
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Abstract
An approach to the initial evaluation, resuscitation, and treatment of the patient with severe traumatic brain injury is presented in terms of the underlying physiology and literature support. The primary importance of rapid and complete systemic resuscitation in terms of the "ABCs" is stressed, with the goal of optimizing cerebral perfusion and preventing secondary insults to the injured brain. The integration of brain-specific treatments and diagnostic maneuvers into resuscitation protocols is discussed, including the role of mannitol and hyperventilation as well as the prioritization of CT imaging of the brain.
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Affiliation(s)
- R M Chesnut
- Neurosurgery Division, Oregon Health Sciences University, Portland, USA
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