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Karim N, Tumin D, Karim S. Impact of Gender and Marital Status on Door-To-Treatment (DTT) Time and Acute Stroke Outcome. Neurologist 2024:00127893-990000000-00146. [PMID: 39044664 DOI: 10.1097/nrl.0000000000000580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
OBJECTIVES Delays in acute stroke treatment lead to poor outcomes. Women can present with atypical stroke symptoms, are older at the time of stroke, and tend to be living alone, causing delays in pre-hospital diagnosis and seeking care. It is unclear if gender disparities in ED arrival and stroke assessment are compounded by gender differences after ED arrival. Therefore, we sought to identify if gender and marital status were associated with faster door-to-treatment (DTT) time. METHODS Our single-center stroke database was queried for adults presenting to ED with acute stroke between January 1, 2018 and January 30, 2023 treated with IV thrombolytics (IVT)+/- endovascular thrombectomy (EVT) and a known DTT time. The primary outcome was DTT (door-to-needle+door-to-puncture) time. Data collected includes the National Institutes of Health Stroke Scale (NIHSS) at presentation and discharge, gender, marital status, age, and intervention (IVT alone or IVT+/- EVT). RESULTS Among 674 patients identified, 35 patients were excluded due to missing data. Of 639 patients (median age 66 y), 25%/18% of patients were married men/women, respectively, and 22%/35% were single men/women. Median DTN time, DTP time, and discharge NIHSS score were 36, 79, and 4 mins, respectively. On multivariable analysis, neither DTT time nor NIHSS score at discharge improved among married men relative to any other combination of gender and marital status. CONCLUSIONS Gender differences in the knowledge of stroke warning signs and gender disparities in ED assessment did not translate into faster DTT time. More work is needed to find ways to accelerate stroke care after ED arrival.
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Affiliation(s)
- Nurose Karim
- East Carolina University Health Medical Center
- Brody School of Medicine
| | - Dmitry Tumin
- Brody School of Medicine East Carolina University, Greenville, NC
| | - Sehrish Karim
- Department of Internal Medicine at Aga Khan University Hospital, Karachi Pakistan
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Aldridge SJ, Schmidt AE, Thißen M, Bernal-Delgado E, Estupiñán-Romero F, González-Galindo J, Dolanski-Aghamanoukjan L, Mathis-Edenhofer S, Buble T, Križ K, Vuković J, Palmieri L, Unim B, Meulman I, Owen RK, Lyons RA. Has the COVID-19 pandemic changed existing patterns of non-COVID-19 health care utilization? A retrospective analysis of six regions in Europe. Eur J Public Health 2024; 34:i67-i73. [PMID: 38946449 DOI: 10.1093/eurpub/ckad180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024] Open
Abstract
BACKGROUND Resilience of national health systems in Europe remains a major concern in times of multiple crises and as more evidence is emerging relating to the indirect effects of the COVID-19 pandemic on health care utilization (HCU), resulting from de-prioritization of regular, non-pandemic healthcare services. Most extant studies focus on regional, disease specific or early pandemic HCU creating difficulties in comparing across multiple countries. We provide a comparatively broad definition of HCU across multiple countries, with potential to expand across regions and timeframes. METHODS Using a cross-country federated research infrastructure (FRI), we examined HCU for acute cardiovascular events, elective surgeries and serious trauma. Aggregated data were used in forecast modelling to identify changes from predicted European age-standardized counts via fitted regressions (2017-19), compared against post-pandemic data. RESULTS We found that elective surgeries were most affected, universally falling below predicted levels in 2020. For cardiovascular HCU, we found lower-than-expected cases in every region for heart attacks and displayed large sex differences. Serious trauma was the least impacted by the COVID-19 pandemic. CONCLUSION The strength of this study comes from the use of the European Population Health Information Research Infrastructure's (PHIRI) FRI, allowing for rapid analysis of regional differences to assess indirect impacts of events such as pandemics. There are marked differences in the capacity of services to return to normal in terms of elective surgery; additionally, we found considerable differences between men and women which requires further research on potential sex or gender patterns of HCU during crises.
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Affiliation(s)
- Sarah J Aldridge
- Population Data Science, Swansea University Medical School, Faculty of Medicine, Health, and Life Science, Swansea University, Swansea, UK
| | - Andrea E Schmidt
- Competence Centre Climate and Health, GÖG (Austrian National Public Health Institute), Vienna, Austria
| | - Martin Thißen
- Department for Health Monitoring and Epidemiology, Robert Koch Institute, Berlin, Germany
| | - Enrique Bernal-Delgado
- Data Science for Health Services and Policy Research Group, Institute for Health Sciences in Aragon (IACS), Zaragoza, Spain
| | - Francisco Estupiñán-Romero
- Data Science for Health Services and Policy Research Group, Institute for Health Sciences in Aragon (IACS), Zaragoza, Spain
| | - Javier González-Galindo
- Data Science for Health Services and Policy Research Group, Institute for Health Sciences in Aragon (IACS), Zaragoza, Spain
| | - Lorenz Dolanski-Aghamanoukjan
- International Affairs, Policy, Evaluation, Digitalisation, GÖG (Austrian National Public Health Institute), Vienna, Austria
| | - Stefan Mathis-Edenhofer
- Health Care Planning and System Development, GÖG (Austrian National Public Health Institute), Vienna, Austria
| | - Tamara Buble
- Croatian Institute of Public Health (HZJZ), Zagreb, Croatia
| | - Klea Križ
- Croatian Institute of Public Health (HZJZ), Zagreb, Croatia
| | - Jakov Vuković
- Croatian Institute of Public Health (HZJZ), Zagreb, Croatia
| | - Luigi Palmieri
- Department of Cardiovascular, Endocrine-Metabolic Diseases and Aging, Istituto Superiore di Sanità (ISS), Rome, Italy
| | - Brigid Unim
- Department of Cardiovascular, Endocrine-Metabolic Diseases and Aging, Istituto Superiore di Sanità (ISS), Rome, Italy
| | - Iris Meulman
- Center for Public Health, Health Services and Society, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
- Tranzo, Tilburg School of Social and Behavioural Sciences, Tilburg University, Tilburg, The Netherlands
| | - Rhiannon K Owen
- Population Data Science, Swansea University Medical School, Faculty of Medicine, Health, and Life Science, Swansea University, Swansea, UK
| | - Ronan A Lyons
- Population Data Science, Swansea University Medical School, Faculty of Medicine, Health, and Life Science, Swansea University, Swansea, UK
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Wenstrup J, Hestoy BH, Sagar MV, Blomberg SNF, Christensen H, Christensen HC, Kruuse C. Emergency Medical Services dispatcher recognition of stroke: A systematic review. Eur Stroke J 2024; 9:283-294. [PMID: 38174575 DOI: 10.1177/23969873231223339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024] Open
Abstract
PURPOSE Stroke treatments are time-sensitive, and thus early and correct recognition of stroke by Emergency Medical Services is essential for outcomes. This is particularly important with the adaption of mobile stroke units. In this systematic review, we therefore aimed to provide a comprehensive overview of Emergency Medical Services dispatcher recognition of stroke. METHODS The review was registered on PROSPERO and the PRISMA guidelines were applied. We searched PubMed, Embase, and Cochrane Review Library. Screening and data extraction were performed by two observers. Risk of bias was assessed using the QUADAS-2 instrument. FINDINGS Of 1200 papers screened, 24 fulfilled the inclusion criteria. Data on sensitivity was reported in 22 papers and varied from 17.9% to 83.0%. Positive predictive values were reported in 12 papers and ranged from 24.0% to 87.7%. Seven papers reported specificity, which ranged from 20.0% to 99.1%. Six papers reported negative predictive value, ranging from 28.0% to 99.4%. In general, the risk of bias was low. DISCUSSION Stroke recognition by dispatchers varied greatly, but overall many patients with stroke are not recognised, despite the initiatives taken to improve stroke literacy. The available data are of high quality, however Asian, African, and South American populations are underrepresented. CONCLUSION While the data are heterogenous, this review can serve as a reference for future research in emergency medical dispatcher stroke recognition and initiatives to improve prehospital stroke recognition.
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Affiliation(s)
- Jonathan Wenstrup
- Department of Neurology, Neurovascular Research Unit, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
- Emergency Medical Services, Copenhagen, Denmark
- Emergency Medical Services, Region Zealand, Denmark
| | - Bartal Hofgaard Hestoy
- Department of Neurology, Neurovascular Research Unit, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
| | - Malini Vendela Sagar
- Department of Neurology, Neurovascular Research Unit, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
| | | | - Hanne Christensen
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Department of Neurology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - Helle Collatz Christensen
- Emergency Medical Services, Region Zealand, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Christina Kruuse
- Department of Neurology, Neurovascular Research Unit, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Department of Brain- and Spinal Cord Injury, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
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Scott IA, van der Vegt A, Lane P, McPhail S, Magrabi F. Achieving large-scale clinician adoption of AI-enabled decision support. BMJ Health Care Inform 2024; 31:e100971. [PMID: 38816209 PMCID: PMC11141172 DOI: 10.1136/bmjhci-2023-100971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 05/15/2024] [Indexed: 06/01/2024] Open
Abstract
Computerised decision support (CDS) tools enabled by artificial intelligence (AI) seek to enhance accuracy and efficiency of clinician decision-making at the point of care. Statistical models developed using machine learning (ML) underpin most current tools. However, despite thousands of models and hundreds of regulator-approved tools internationally, large-scale uptake into routine clinical practice has proved elusive. While underdeveloped system readiness and investment in AI/ML within Australia and perhaps other countries are impediments, clinician ambivalence towards adopting these tools at scale could be a major inhibitor. We propose a set of principles and several strategic enablers for obtaining broad clinician acceptance of AI/ML-enabled CDS tools.
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Affiliation(s)
- Ian A Scott
- Internal Medicine and Clinical Epidemiology, Princess Alexandra Hospital, Brisbane, Queensland, Australia
- Centre for Health Services Research, The University of Queensland Faculty of Medicine and Biomedical Sciences, Brisbane, Queensland, Australia
| | - Anton van der Vegt
- Digital Health Centre, The University of Queensland Faculty of Medicine and Biomedical Sciences, Herston, Queensland, Australia
| | - Paul Lane
- Safety, Quality and Innovation, The Prince Charles Hospital, Brisbane, Queensland, Australia
| | - Steven McPhail
- Australian Centre for Health Services Innovation, Queensland University of Technology Faculty of Health, Brisbane, Queensland, Australia
| | - Farah Magrabi
- Macquarie University, Sydney, New South Wales, Australia
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Farid HA, Naqvi A. The Burden of Stroke Mimics Among Hyperacute Stroke Unit Attendees with Special Emphasis on Migraine: A 10-Year Evaluation. Cureus 2024; 16:e59700. [PMID: 38840995 PMCID: PMC11151139 DOI: 10.7759/cureus.59700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2024] [Indexed: 06/07/2024] Open
Abstract
BACKGROUND AND OBJECTIVES Stroke and migraine are common neurological illnesses that cause tremendous suffering for patients. Certain diseases can mimic the clinical manifestations of an actual stroke. Migraine is one of the most commonly reported stroke mimics. The main goals of this study are to look at the prevalence of stroke mimics on the stroke pathway of Sheffield Teaching Hospitals and how many of them are migraines. MATERIALS AND METHODS A retrospective service evaluation was conducted at the hyperacute stroke unit (HASU) of the Royal Hallamshire Hospital (RHH) in the United Kingdom. The total admissions from 2013 to 2022 were collected from the Sentinel Stroke National Audit Programme database, and the number of stroke mimics was evaluated each year. The burden of migraine stroke mimics was also evaluated. Then, a one-year sample of stroke mimics was extracted to look for the types of each mimic. RESULTS From 2013 to 2022, 45.75% (n = 12156) of the stroke pathway patients (n = 26573) were stroke mimics, with an increment of up to 55% in the years 2021 and 2022. During these 10 years, migraine stroke mimics accounted for 10.21% of admissions (n = 1240). The three most common mimics in a one-year sample of stroke pathway patients were migraine (14.70%) (n = 373), functional neurological disorders (FNDs) (7.17%) (n = 182), and Guillain-Barré syndrome (6.66%) (n = 169). Seizures, syncope, and metabolic derangements were reported as mimics in 4.17% (n = 106), 3.14% (n = 80), and 1.77% (n = 45), respectively. CONCLUSIONS About half of the HASU attendees were stroke mimics rather than actual strokes, and the most common mimics were migraines.
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Affiliation(s)
- Hassan A Farid
- Neurology, St George's University of London, London, GBR
| | - Aaizza Naqvi
- Neurology, Sheffield Teaching Hospitals, Sheffield, GBR
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Ross A, Leemeyer AMR, Bruintjes TD, Cals JWL, Bronstein A, van Leeuwen RB, Lissenberg-Witte B, van Vugt VA, Rutgers S, Maarsingh OR. Prospective diagnostic accuracy study of history taking and physical examination for adults with vertigo in general practice: study protocol. BMJ Open 2024; 14:e085715. [PMID: 38569697 PMCID: PMC10989125 DOI: 10.1136/bmjopen-2024-085715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 03/18/2024] [Indexed: 04/05/2024] Open
Abstract
INTRODUCTION Vertigo is a prevalent and burdensome symptom. More than 80% of patients with vertigo are primarily treated by their general practitioner (GP) and are never referred to a medical specialist. Despite this therapeutic responsibility, the GP's diagnostic toolkit has serious limitations. All recommended tests lack empirical evidence, because a diagnostic accuracy study on vestibular disorders ('How well does test x discriminate between patients with or without target condition y?') has never been performed in general practice. The VERtigo DIagnosis study aims to fill this gap. METHODS AND ANALYSIS We will perform a diagnostic accuracy study on vertigo of primary vestibular origin in general practice to assess the discriminative ability of history taking and physical examination. We will compare all index tests with a respective reference standard. We will focus on five target conditions that account for more than 95% of vertigo diagnoses in general practice: (1) benign paroxysmal positional vertigo, (2) vestibular neuritis, (3) Ménière's disease, (4) vestibular migraine (VM) and (5) central causes other than VM. As these five target conditions have a different pathophysiology and lack one generally accepted gold standard, we will use consensus diagnosis as a construct reference standard. Data for each patient, including history, physical examination and additional tests as recommended by experts in an international Delphi procedure, will be recorded on a standardised form and independently reviewed by a neurologist and otorhinolaryngologist. For each patient, the reviewers have to decide about the presence/absence of each target condition. We will calculate sensitivity, specificity, predictive values, likelihood ratios and diagnostic ORs, followed by decision rules for each target condition. ETHICS AND DISSEMINATION The study obtained approval from the Vrije Universiteit Medical Center Medical Ethical Review Committee (reference: 2022.0817-NL83111.029.22). We will publish our findings in peer-reviewed international journals. TRIAL REGISTRATION NUMBER ISRCTN97250704.
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Affiliation(s)
- Andrew Ross
- Department of General Practice, Amsterdam UMC Location VUmc, Amsterdam, The Netherlands
- Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - Anna-Marie Rebecca Leemeyer
- Department of General Practice, Amsterdam UMC Location VUmc, Amsterdam, The Netherlands
- Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - Tjasse D Bruintjes
- Department of Otorhinolaryngology-Head and Neck Surgery, Leiden University Medical Center, Leiden, The Netherlands
- Department of Neurology, Gelre Hospital, Apeldoorn, The Netherlands
| | - Jochen W L Cals
- Department of Family Medicine, Maastricht University Care and Public Health Research Institute, Maastricht, The Netherlands
| | - Adolfo Bronstein
- Neuro-otology Unit, Division of Brain Sciences, Imperial College London, London, UK
| | | | - Birgit Lissenberg-Witte
- Department of Epidemiology and Data Science, Amsterdam UMC Locatie VUmc, Amsterdam, The Netherlands
| | - Vincent Alexander van Vugt
- Department of General Practice, Amsterdam UMC Location VUmc, Amsterdam, The Netherlands
- Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - Sandra Rutgers
- Patient association Hoormij NVVS, Houten, The Netherlands
| | - Otto R Maarsingh
- Department of General Practice, Amsterdam UMC Location VUmc, Amsterdam, The Netherlands
- Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
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Petersen CL, Hougaard A, Gaist D, Hallas J. Risk of Stroke and Myocardial Infarction Among Initiators of Triptans. JAMA Neurol 2024; 81:248-254. [PMID: 38315477 PMCID: PMC10845042 DOI: 10.1001/jamaneurol.2023.5549] [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: 09/07/2023] [Accepted: 12/06/2023] [Indexed: 02/07/2024]
Abstract
Importance Triptans are contraindicated in patients with ischemic heart disease or previous myocardial infarction, and caution is advised when prescribing these drugs to patients with vascular risk factors. However, controlled observational studies have either shown no association or an apparent lower risk, possibly owing to a channeling of triptans to individuals at low risk of cardiovascular outcomes, and it remains unclear whether avoiding triptan treatment for these patients is meaningful. Objective To establish whether an association between triptans and ischemic events could be demonstrated using a self-controlled design because this type of design is robust to the previously mentioned type of confounding. Design, Setting, and Participants All people in nationwide Danish registries who were initiating triptans and all the ischemic events that they experienced were identified. A case-crossover design was used to estimate odds ratios (OR) for associations between first-ever triptan use and ischemic outcomes, comparing triptan exposure in the 2-week period up to the event with four 2-week reference periods. Data were obtained for the period January 1995 to August 2022. Included from the population of Denmark were individuals redeeming a prescription for any triptan and experiencing at least 1 of 3 predefined ischemic outcomes. No one was excluded. Exposure Initiation of any triptan. Main Outcomes and Measures Acute myocardial infarction, ischemic stroke, or nonspecified stroke. Results Identified were a total of 429 612 individuals (median [IQR] age, 38 [28-48] years; 325 687 female [75.8%]) who redeemed a first prescription for a triptan in the study period. Of these patients, 11 (0.003%) had a myocardial infarction with the first triptan prescription in either a focal or referent window (odds ratio [OR], 3.3; 95% CI, 1.0-10.9), 18 (0.004%) had ischemic stroke (OR, 3.2; 95% CI, 1.3-8.1), and 35 (0.008%) had ischemic/nonspecified stroke (OR, 3.0; 95% CI, 1.5-5.9). Case patients had a median age of approximately 60 years and had a high-risk cardiovascular profile. Conclusions and Relevance Results of this case-crossover study suggest that triptan initiation was associated with higher risk of ischemic stroke and myocardial infarction. For the individual patient with low background cardiovascular risk, the risk of an ischemic event after triptan initiation was very low.
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Affiliation(s)
- Christian Lund Petersen
- Department of Clinical Pharmacology, Odense University Hospital, Odense, Denmark
- Department of Radiology, University Hospital of Southern Denmark, Odense, Denmark
| | - Anders Hougaard
- Department of Neurology, Copenhagen University Hospital—Herlev, Herlev, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - David Gaist
- Research Unit for Neurology, Odense University Hospital, University of Southern Denmark, Odense, Denmark
| | - Jesper Hallas
- Department of Clinical Pharmacology, Odense University Hospital, Odense, Denmark
- Clinical Pharmacology, Pharmacy and Environmental Medicine, Department of Public Health, University of Southern Denmark, Odense, Denmark
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Kotwal S, Singh A, Tackett S, Bery AK, Omron R, Gold D, Newman-Toker DE, Wright SM. Assessing clinical reasoning skills following a virtual patient dizziness curriculum. Diagnosis (Berl) 2024; 11:73-81. [PMID: 38079609 DOI: 10.1515/dx-2023-0099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 11/09/2023] [Indexed: 02/20/2024]
Abstract
OBJECTIVES Dizziness is a common medical symptom that is frequently misdiagnosed. While virtual patient (VP) education has been shown to improve diagnostic accuracy for dizziness as assessed by VPs, trainee performance has not been assessed on human subjects. The study aimed to assess whether internal medicine (IM) interns after training on a VP-based dizziness curriculum using a deliberate practice framework would demonstrate improved clinical reasoning when assessed in an objective structured clinical examination (OSCE). METHODS All available interns volunteered and were randomized 2:1 to intervention (VP education) vs. control (standard clinical teaching) groups. This quasi-experimental study was conducted at one academic medical center from January to May 2021. Both groups completed pre-posttest VP case assessments (scored as correct diagnosis across six VP cases) and participated in an OSCE done 6 weeks later. The OSCEs were recorded and assessed using a rubric that was systematically developed and validated. RESULTS Out of 21 available interns, 20 participated. Between intervention (n=13) and control (n=7), mean pretest VP diagnostic accuracy scores did not differ; the posttest VP scores improved for the intervention group (3.5 [SD 1.3] vs. 1.6 [SD 0.8], p=0.007). On the OSCE, the means scores were higher in the intervention (n=11) compared to control group (n=4) for physical exam (8.4 [SD 4.6] vs. 3.9 [SD 4.0], p=0.003) and total rubric score (43.4 [SD 12.2] vs. 32.6 [SD 11.3], p=0.04). CONCLUSIONS The VP-based dizziness curriculum resulted in improved diagnostic accuracy among IM interns with enhanced physical exam skills retained at 6 weeks post-intervention.
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Affiliation(s)
- Susrutha Kotwal
- Department of Medicine, Division of Hospital Medicine, Johns Hopkins Bayview Medical Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Amteshwar Singh
- Department of Medicine, Division of Hospital Medicine, Johns Hopkins Bayview Medical Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Sean Tackett
- Department of Medicine, Division of General Internal Medicine, Johns Hopkins Bayview Medical Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Anand K Bery
- Department of Medicine, Division of Neurology, The Ottawa Hospital, Ottawa, Canada
| | - Rodney Omron
- Department of Emergency Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Daniel Gold
- Department of Neurology, Division of Neuro-Visual & Vestibular Disorders, Johns Hopkins Hospital, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - David E Newman-Toker
- Department of Neurology, Division of Neuro-Visual & Vestibular Disorders, Johns Hopkins Hospital, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Scott M Wright
- Department of Medicine, Division of General Internal Medicine, Johns Hopkins Bayview Medical Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Bastani PB, Rieiro H, Badihian S, Otero‐Millan J, Farrell N, Parker M, Newman‐Toker D, Zhu Y, Saber Tehrani A. Quantifying Induced Nystagmus Using a Smartphone Eye Tracking Application (EyePhone). J Am Heart Assoc 2024; 13:e030927. [PMID: 38226513 PMCID: PMC10926800 DOI: 10.1161/jaha.123.030927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 12/10/2023] [Indexed: 01/17/2024]
Abstract
BACKGROUND There are ≈5 million annual dizziness visits to US emergency departments, of which vestibular strokes account for over 250 000. The head impulse, nystagmus, and test of skew eye examination can accurately distinguish vestibular strokes from peripheral dizziness. However, the eye-movement signs are subtle, and lack of familiarity and difficulty with recognition of abnormal eye movements are significant barriers to widespread emergency department use. To break this barrier, we sought to assess the accuracy of EyePhone, our smartphone eye-tracking application, for quantifying nystagmus. METHODS AND RESULTS We prospectively enrolled healthy volunteers and recorded the velocity of induced nystagmus using a smartphone eye-tracking application (EyePhone) and then compared the results with video oculography (VOG). Following a calibration protocol, the participants viewed optokinetic stimuli with incremental velocities (2-12 degrees/s) in 4 directions. We extracted slow phase velocities from EyePhone data in each direction and compared them with the corresponding slow phase velocities obtained by the VOG. Furthermore, we calculated the area under the receiver operating characteristic curve for nystagmus detection by EyePhone. We enrolled 10 volunteers (90% men) with an average age of 30.2±6 years. EyePhone-recorded slow phase velocities highly correlated with the VOG recordings (r=0.98 for horizontal and r=0.94 for vertical). The calibration significantly increased the slope of linear regression for horizontal and vertical slow phase velocities. Evaluating the EyePhone's performance using VOG data with a 2 degrees/s threshold showed an area under the receiver operating characteristic curve of 0.87 for horizontal and vertical nystagmus detection. CONCLUSIONS We demonstrated that EyePhone could accurately detect and quantify optokinetic nystagmus, similar to the VOG goggles.
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Affiliation(s)
- Pouya B. Bastani
- Department of NeurologyJohns Hopkins University School of MedicineBaltimoreMDUSA
- Armstrong Institute Center for Diagnostic ExcellenceBaltimoreMDUSA
| | - Hector Rieiro
- Department of NeurologyJohns Hopkins University School of MedicineBaltimoreMDUSA
- Armstrong Institute Center for Diagnostic ExcellenceBaltimoreMDUSA
| | - Shervin Badihian
- Armstrong Institute Center for Diagnostic ExcellenceBaltimoreMDUSA
- Neurological Institute, Cleveland ClinicClevelandOHUSA
| | - Jorge Otero‐Millan
- Herbert Wertheim School of Optometry and Vision ScienceUniversity of CaliforniaBerkeleyCAUSA
| | - Nathan Farrell
- Department of NeurologyJohns Hopkins University School of MedicineBaltimoreMDUSA
- Armstrong Institute Center for Diagnostic ExcellenceBaltimoreMDUSA
| | - Max Parker
- Department of Neurology, NYU Langone HealthNew YorkNYUSA
| | - David Newman‐Toker
- Department of NeurologyJohns Hopkins University School of MedicineBaltimoreMDUSA
- Armstrong Institute Center for Diagnostic ExcellenceBaltimoreMDUSA
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public HealthBaltimoreMDUSA
| | - Yuxin Zhu
- Department of NeurologyJohns Hopkins University School of MedicineBaltimoreMDUSA
- Armstrong Institute Center for Diagnostic ExcellenceBaltimoreMDUSA
- Department of BiostatisticsJohns Hopkins University Bloomberg School of Public HealthBaltimoreMDUSA
| | - Ali Saber Tehrani
- Department of NeurologyJohns Hopkins University School of MedicineBaltimoreMDUSA
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10
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Candelaresi P, Di Monaco C, Pisano E. Stroke chameleons: Diagnostic challenges. Eur J Radiol Open 2023; 11:100533. [PMID: 38028188 PMCID: PMC10652115 DOI: 10.1016/j.ejro.2023.100533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 10/20/2023] [Indexed: 12/01/2023] Open
Affiliation(s)
- P Candelaresi
- Neurology and Stroke Unit, AORN Antonio Cardarelli, Naples, Italy
| | - C Di Monaco
- Neurology and Stroke Unit, AORN Antonio Cardarelli, Naples, Italy
- Department of Neuroscience, Reproductive Science and Odontostomatology, Federico II University, Naples, Italy
| | - E Pisano
- Neurology and Stroke Unit, AORN Antonio Cardarelli, Naples, Italy
- Department of Neuroscience, Reproductive Science and Odontostomatology, Federico II University, Naples, Italy
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11
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Arumuganathan P, Adcock AK, Espinosa C, Findley S. Analysis of Telestroke Usage in Rural Critical Access Emergency Departments. Telemed J E Health 2023; 29:1828-1833. [PMID: 37205846 PMCID: PMC10714255 DOI: 10.1089/tmj.2022.0408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 09/30/2022] [Accepted: 01/04/2023] [Indexed: 05/21/2023] Open
Abstract
Introduction: Telestroke is an effective strategy to increase appropriate stroke treatments among patients in resource-limited environments. Despite the well-documented benefits of telestroke, there is limited literature regarding its utilization. The purposes of this study are: (1) determine the percentage of potential stroke patients who generate a telestroke consult in rural critical access hospitals (CAHs) and (2) validate an electronic medical record (EMR)-derived report as a stroke screen. Methods: This retrospective chart review analyzed patients presenting between September 1, 2020 and February 1, 2021 to three CAHs. Visits with triage complaints suggesting acute ischemic stroke (AIS)/transient ischemic attack (TIA) were pooled for analysis using an EMR-derived report. Patients with confirmed AIS/TIA at discharge over this period were used to validate the EMR tool. Results: The EMR report pooled 252 possible AIS/TIA visits out of 12,685 emergency department visits for analysis. It had a specificity of 98.78% and sensitivity of 58.06%. Of the 252 visits, 12.7% met telestroke criteria and 38.89% received telestroke evaluation. Among these, a definite diagnosis of AIS/TIA was made in 92.86%. Of the remaining population who met criteria but didn't undergo consultation, 61.11% were diagnosed with AIS/TIA at discharge. Conclusion: This study provides novel characterization of stroke presentations and telestroke in rural CAHs. The EMR-derived report is a reasonable tool to concentrate potential AIS/TIA cases for review and resource allocation but is not sensitive enough to detect stroke as a stand-alone tool. The majority (56%) of eligible patients did not undergo telestroke consultation. Future studies are critical to further understand reasons contributing to this.
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Affiliation(s)
- Priya Arumuganathan
- Department of Emergency Medicine, School of Medicine, West Virginia University, Morgantown, West Virginia, USA
| | - Amelia K. Adcock
- Department of Neurology, School of Medicine, West Virginia University, Morgantown, West Virginia, USA
- Department of Neurology, Mayo Clinic, Phoenix, Arizona, USA
| | - Cristal Espinosa
- Department of Pediatric Emergency Medicine, West Virginia University, Morgantown, West Virginia, USA
| | - Scott Findley
- Department of Emergency Medicine, School of Medicine, West Virginia University, Morgantown, West Virginia, USA
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12
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Herdman D, Ahmad H, Antoniades G, Bailur G, Pajaniappane A, Moss P. Developing an implementation intervention for managing acute vertigo in the emergency department. Emerg Med J 2023; 40:840-846. [PMID: 37875319 DOI: 10.1136/emermed-2023-213344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 10/07/2023] [Indexed: 10/26/2023]
Abstract
BACKGROUND There are evidence-based bedside tests for diagnosing acute vertigo, but no evidence-based strategies to support clinicians in implementing them. The purpose of this study was to design an implementation strategy for treating acute vertigo by examining current facilitators and barriers to using these tests in the ED using the principles of implementation science. METHODS A survey was developed using the Theoretical Domains Framework and Consolidated Framework for Implementation Research to examine barriers and facilitators for using HINTS+ (head impulse, nystagmus, test of skew, plus hearing) and Dix-Hallpike tests. The survey was sent to emergency clinicians (ECs) in a teaching hospital in London, UK, between May and September 2022. Semistructured interviews were conducted simultaneously, and data examined using direct content analysis. Implementation strategies were then selected based on the Expert Recommendations for Implementing Change framework. RESULTS Fifty-one ECs responded to the survey and six ECs volunteered for interview. Less than half reported using the bedside tests to make a diagnosis. The most common barriers were beliefs about complexity, a lack of supporting materials, memory, lack of skills and negative experiences. The interview data revealed negative beliefs about the necessity, validity, safety and practicality. There were also barriers in the ED environment (eg, lack of space). There was a strong perception that the current approach to managing acute vertigo needed to change and ECs view this as part of their professional role and responsibility. Based on clinician input, the authors selected strategies to improve diagnostic efforts, which included guidelines for training, developing vertigo champions, protocols, memory aids, audit and feedback. CONCLUSION This study found several barriers to managing acute vertigo such as memory constraints, and inadequate supporting materials and training, although a robust desire for change. The implementation strategy's initial phase is described, which must now be tested.
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Affiliation(s)
- David Herdman
- Audiovestibular Medicine, St George's University Hospitals NHS Foundation Trust, London, UK
| | - Hena Ahmad
- Neurology Department, St George's University Hospitals NHS Foundation Trust, London, UK
| | - George Antoniades
- Emergency Department Clinical Research Group, St George's University Hospitals NHS Foundation Trust, London, UK
| | - Gokul Bailur
- Emergency Department Clinical Research Group, St George's University Hospitals NHS Foundation Trust, London, UK
| | - Arun Pajaniappane
- Audiovestibular Medicine, St George's University Hospitals NHS Foundation Trust, London, UK
| | - Phil Moss
- Emergency Department Clinical Research Group, St George's University Hospitals NHS Foundation Trust, London, UK
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Liberman AL, Zhang C, Parikh NS, Salehi Omran S, Navi BB, Lappin RI, Merkler AE, Kaiser JH, Kamel H. Misdiagnosis of Posterior Reversible Encephalopathy Syndrome and Reversible Cerebral Vasoconstriction Syndrome in the Emergency Department. J Am Heart Assoc 2023; 12:e030009. [PMID: 37750568 PMCID: PMC10727253 DOI: 10.1161/jaha.123.030009] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 08/24/2023] [Indexed: 09/27/2023]
Abstract
Background Cerebrovascular dysregulation syndromes, posterior reversible encephalopathy syndrome (PRES) and reversible cerebral vasoconstriction syndrome (RCVS), are challenging to diagnose because they are rare and require advanced neuroimaging for confirmation. We sought to estimate PRES/RCVS misdiagnosis in the emergency department and its associated factors. Methods and Results We conducted a retrospective cohort study of PRES/RCVS patients using administrative claims data from 11 states (2016-2018). We defined patients with a probable PRES/RCVS misdiagnosis as those with an emergency department visit for a neurological symptom resulting in discharge to home that occurred ≤14 days before PRES/RCVS hospitalization. Proportions of patients with probable misdiagnosis were calculated, characteristics of patients with and without probable misdiagnosis were compared, and regression analyses adjusted for demographics and comorbidities were performed to identify factors affecting probable misdiagnosis. We identified 4633 patients with PRES/RCVS. A total of 210 patients (4.53% [95% CI, 3.97-5.17]) had a probable preceding emergency department misdiagnosis; these patients were younger (mean age, 48 versus 54 years; P<0.001) and more often female (80.4% versus 69.3%; P<0.001). Misdiagnosed patients had fewer vascular risk factors except prior stroke (36.3% versus 24.2%; P<0.001) and more often had comorbid headache (84% versus 21.4%; P<0.001) and substance use disorder (48.8% versus 37.9%; P<0.001). Facility-level factors associated with probable misdiagnosis included smaller facility, lacking a residency program (62.2% versus 73.7%; P<0.001), and not having on-site neurological services (75.7% versus 84.3%; P<0.001). Probable misdiagnosis was not associated with higher likelihood of stroke or subarachnoid hemorrhage during PRES/RCVS hospitalization. Conclusions Probable emergency department misdiagnosis occurred in ≈1 of every 20 patients with PRES/RCVS in a large, multistate cohort.
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Affiliation(s)
- Ava L. Liberman
- Clinical and Translational Neuroscience Unit, Department of NeurologyFeil Family Brain and Mind Research Institute, Weill Cornell MedicineNew YorkNY
| | - Cenai Zhang
- Clinical and Translational Neuroscience Unit, Department of NeurologyFeil Family Brain and Mind Research Institute, Weill Cornell MedicineNew YorkNY
| | - Neal S. Parikh
- Clinical and Translational Neuroscience Unit, Department of NeurologyFeil Family Brain and Mind Research Institute, Weill Cornell MedicineNew YorkNY
| | | | - Babak B. Navi
- Clinical and Translational Neuroscience Unit, Department of NeurologyFeil Family Brain and Mind Research Institute, Weill Cornell MedicineNew YorkNY
| | | | - Alexander E. Merkler
- Clinical and Translational Neuroscience Unit, Department of NeurologyFeil Family Brain and Mind Research Institute, Weill Cornell MedicineNew YorkNY
| | - Jed H. Kaiser
- Clinical and Translational Neuroscience Unit, Department of NeurologyFeil Family Brain and Mind Research Institute, Weill Cornell MedicineNew YorkNY
| | - Hooman Kamel
- Clinical and Translational Neuroscience Unit, Department of NeurologyFeil Family Brain and Mind Research Institute, Weill Cornell MedicineNew YorkNY
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14
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Devlin S, Bury G. Paramedic recognition of posterior circulation stroke: a vignette and focus group study. Br Paramed J 2023; 8:1-9. [PMID: 37674916 PMCID: PMC10477819 DOI: 10.29045/14784726.2023.9.8.2.1] [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: 09/08/2023] Open
Abstract
Introduction The main pre-hospital screening tool used for stroke in Ireland and the United Kingdom is the FAST (face, arms, speech, time) test. However, posterior circulation stroke (PCS) patients may be FAST negative on exam, presenting with sudden dizziness, headaches, visual problems, nausea and vomiting and balance/co-ordination problems. There is a lack of research into paramedic recognition of PCS, and this study sought to evaluate recognition rates among paramedics (Ps) and advanced paramedics (APs) in Ireland. Methods A cross-sectional sequential exploratory design was chosen. An anonymous online survey was carried out, which informed focus group discussions. The survey contained six clinical vignettes, two of which were PCS presentations. Correct diagnosis, hospital destination and type of pre-alert were recorded. Focus groups were chaired by an independent moderator via Zoom. Recordings were transcribed and thematic analysis was carried out to create codes and themes. Results One hundred and fifty-one staff members (91 Ps, 60 APs) completed the survey (response rate 40%). Of these, 67% did not recognise PCS symptoms and 77% did not choose to transport to a stroke unit. For those correctly suspecting PCS, 42% requested resus at the stroke unit and 18% requested resus in the local emergency department (ED). Two focus groups of four practitioners (n = 8) took place. Three main themes were created: (1) comfort levels with posterior stroke, with subthemes of recognition and personal experiences; (2) education, with subthemes of clinical practice guideline (CPG) issues and training issues; and (3) hospital factors, with subthemes of pre-alerting and disconnect between hospital and emergency medical services. Participants were uncomfortable with PCS recognition and bypassing their local ED. More training was called for, with a dedicated CPG. Relationships with hospital staff affected willingness to pre-alert. Conclusions In this sample group, recognition of PCS and onward transfer to a stroke unit was low. Focus groups showed that practitioners were uncomfortable recognising PCS and bypassing a local ED without adequate training and a dedicated CPG. Relationships with hospital staff also affected pre-alert decisions.
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Affiliation(s)
- Shane Devlin
- National Ambulance Service, Ireland; University College Dublin ORCID iD: https://orcid.org/0000-0003-3528-769X
| | - Gerard Bury
- University College Dublin ORCID iD: https://orcid.org/0000-0002-4441-6724
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15
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Tarnutzer AA, Edlow JA. Bedside Testing in Acute Vestibular Syndrome-Evaluating HINTS Plus and Beyond-A Critical Review. Audiol Res 2023; 13:670-685. [PMID: 37736940 PMCID: PMC10514811 DOI: 10.3390/audiolres13050059] [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: 06/14/2023] [Revised: 08/16/2023] [Accepted: 08/28/2023] [Indexed: 09/23/2023] Open
Abstract
Acute vertigo and dizziness are frequent presenting symptoms in patients in the emergency department. These symptoms, which can be subtle and transient, present diagnostic challenges because they can be caused by a broad range of conditions that cut across many specialties and organ systems. Previous work has emphasized the value of combining structured history taking and a targeted examination focusing on subtle oculomotor signs. In this review, we discuss various diagnostic bedside algorithms proposed for the acutely dizzy patient. We analyzed these different approaches by calculating their area-under-the-curve (ROC) characteristics and sensitivity/specificity. We found that the algorithms that incorporated structured history taking and the use of subtle oculomotor signs had the highest diagnostic accuracy. In fact, both the HINTS+ bedside exam and the STANDING algorithm can more accurately diagnose acute strokes than early (<24 to 48 h after symptom onset) MRI with diffusion-weighted imaging (DWI). An important caveat is that HINTS and STANDING require moderate training to achieve this accuracy. Therefore, for physicians who have not undergone adequate training, other approaches are needed. These other approaches (e.g., ABCD2 score, PCI score, and TriAGe+ score) rely on vascular risk factors, clinical symptoms, and focal neurologic findings. While these other scores are easier for frontline providers to use, their diagnostic accuracy is far lower than HINTS+ or STANDING. Therefore, a focus on providing dedicated training in HINTS+ or STANDING techniques to frontline clinicians will be key to improving diagnostic accuracy and avoiding unnecessary brain imaging.
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Affiliation(s)
- Alexander A. Tarnutzer
- Department of Neurology, Cantonal Hospital of Baden, 5404 Baden, Switzerland
- Faculty of Medicine, University of Zurich, 8006 Zurich, Switzerland
| | - Jonathan A. Edlow
- Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA;
- Emergency Medicine, Harvard Medical School, Boston, MA 02115, USA
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16
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Neves G, DeToledo J, Morris J, Xu KT. An analysis of racial inequities in emergency department triage among patients with stroke-like symptoms in the United States. BMC Emerg Med 2023; 23:90. [PMID: 37580687 PMCID: PMC10426180 DOI: 10.1186/s12873-023-00865-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 08/08/2023] [Indexed: 08/16/2023] Open
Abstract
BACKGROUND Racial inequities exist in treatment and outcomes in patients with acute stroke. OBJECTIVES Our objective was to determine if racial inequities exist in the time-lapse between patient presentation and provider assessment in patients with stroke-like symptoms in Emergency Departments (ED) across the U.S. METHODS This study is a retrospective, observational study of the National Hospital Ambulatory Medical Care Survey (NHAMCS) 2014-2018. We identified visits with stroke-like symptoms and stratified the proportion of door-to-provider (DTP) times by racial groups. We used broad and narrow definitions of stroke-like symptoms. We performed bivariate and multivariate analyses using race and clinical and demographic characteristics as covariates. RESULTS Between 2014-2018, there were an average of 138.58 million annual ED visits. Of the total ED visits, 0.36% to 7.39% of the ED visits presented with stroke-like symptoms, and the average DTP time ranged from 39 to 49 min. The proportion of the visits with a triage level of 1 (immediate) or 2 (emergent) ranged from 16.03% to 23.27% for stroke-like symptoms. We did not find statistically significant racial inequities in DTP or ED triage level. We found significantly longer DTP times in non-Hispanic blacks (15.88 min, 95% CI: 4.29-27.48) and Hispanics (by 14.77 min, 95% CI: 3.37-26.16) than non-Hispanic whites that presented with atypical stroke-like symptoms. We observed that non-Hispanic whites were significantly more diagnosed with a stroke/TIA than other racial minority groups (p = 0.045) for atypical stroke-like symptoms. CONCLUSION In our population-based analysis, we did not identify systemic racial inequities in the DTP times or ED triage level at ED triage for stroke-like symptoms.
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Affiliation(s)
- Gabriel Neves
- Department of Neurology, Texas Tech University Health Sciences Center, Lubbock, TX, USA.
| | - John DeToledo
- Department of Neurology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - James Morris
- Division of Emergency Medicine, Department of Surgery, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - K Tom Xu
- Division of Emergency Medicine, Department of Surgery, Texas Tech University Health Sciences Center, Lubbock, TX, USA
- Department of Family & Community Medicine, Texas Tech University Health Sciences Center, Lubbock, TX, USA
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17
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Liberman AL, Wang Z, Zhu Y, Hassoon A, Choi J, Austin JM, Johansen MC, Newman-Toker DE. Optimizing measurement of misdiagnosis-related harms using symptom-disease pair analysis of diagnostic error (SPADE): comparison groups to maximize SPADE validity. Diagnosis (Berl) 2023; 10:225-234. [PMID: 37018487 PMCID: PMC10659025 DOI: 10.1515/dx-2022-0130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 03/06/2023] [Indexed: 04/07/2023]
Abstract
Diagnostic errors in medicine represent a significant public health problem but continue to be challenging to measure accurately, reliably, and efficiently. The recently developed Symptom-Disease Pair Analysis of Diagnostic Error (SPADE) approach measures misdiagnosis related harms using electronic health records or administrative claims data. The approach is clinically valid, methodologically sound, statistically robust, and operationally viable without the requirement for manual chart review. This paper clarifies aspects of the SPADE analysis to assure that researchers apply this method to yield valid results with a particular emphasis on defining appropriate comparator groups and analytical strategies for balancing differences between these groups. We discuss four distinct types of comparators (intra-group and inter-group for both look-back and look-forward analyses), detailing the rationale for choosing one over the other and inferences that can be drawn from these comparative analyses. Our aim is that these additional analytical practices will improve the validity of SPADE and related approaches to quantify diagnostic error in medicine.
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Affiliation(s)
- Ava L. Liberman
- Clinical and Translational Neuroscience Unit, Feil Family Brain and Mind Research Institute and Department of Neurology, Weill Cornell Medicine
| | - Zheyu Wang
- The Johns Hopkins University School of Medicine, Sidney Kimmel Comprehensive Cancer Center, Division of Biostatistics and Bioinformatics
- The Johns Hopkins Bloomberg School of Public Health, Department of Biostatistics
| | - Yuxin Zhu
- The Johns Hopkins University School of Medicine, Sidney Kimmel Comprehensive Cancer Center, Division of Biostatistics and Bioinformatics
- The Johns Hopkins University School of Medicine, Department of Neurology and the Armstrong Institute Center for Diagnostic Excellence
| | - Ahmed Hassoon
- The Johns Hopkins Bloomberg School of Public Health, Department of Biostatistics
| | - Justin Choi
- Department of Internal Medicine, Weill Cornell Medicine
| | - J. Matthew Austin
- The Johns Hopkins University School of Medicine, Department of Anesthesiology and Critical Care Medicine and the Armstrong Institute Center for Diagnostic Excellence
| | - Michelle C. Johansen
- The Johns Hopkins University School of Medicine, Department of Neurology and the Armstrong Institute Center for Diagnostic Excellence
| | - David E. Newman-Toker
- The Johns Hopkins University School of Medicine, Department of Neurology and the Armstrong Institute Center for Diagnostic Excellence
- The Johns Hopkins Bloomberg School of Public Health, Departments of Epidemiology and Health Policy & Management
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18
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Tariq MB, Ali I, Salazar-Marioni S, Iyyangar AS, Azeem HM, Khose S, Lopez V, Abdelkhaleq R, McCullough LD, Sheth SA, Kim Y. Women With Large Vessel Occlusion Acute Ischemic Stroke Are Less Likely to Be Routed to Comprehensive Stroke Centers. J Am Heart Assoc 2023; 12:e029830. [PMID: 37462071 PMCID: PMC10382091 DOI: 10.1161/jaha.123.029830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 05/15/2023] [Indexed: 07/20/2023]
Abstract
Background Prehospital routing of patients with large vessel occlusion (LVO) acute ischemic stroke (AIS) to centers capable of performing endovascular therapy may improve clinical outcomes. Here, we explore whether distance to comprehensive stroke centers (CSCs), stroke severity, and sex are associated with direct-to-CSC prehospital routing in patients with LVO AIS. Methods and Results In this cross-sectional study, we identified consecutive patients with LVO AIS from a prospectively collected multihospital registry throughout the greater Houston area from January 2019 to June 2020. Primary outcome was prehospital routing to CSC and was compared between men and women using modified Poisson regression including age, sex, race or ethnicity, first in-hospital National Institutes of Health Stroke Scale score, travel time, and distances to the closest primary stroke center and CSC. Among 503 patients with LVO AIS, 413 (82%) were routed to CSCs, and women comprised 46% of the study participants. Women with LVO AIS compared with men were older (73 versus 65, P<0.01) and presented with greater National Institutes of Health Stroke Scale score (14 versus 12, P=0.01). In modified Poisson regression, women were 9% less likely to be routed to CSCs compared with men (adjusted relative risk [aRR], 0.91 [0.84-0.99], P=0.024) and distance to nearest CSC ≤10 miles was associated with 38% increased chance of routing to CSC (aRR, 1.38 [1.26-1.52], P<0.001). Conclusions Despite presenting with more significant stroke syndromes and living within comparable distance to CSCs, women with LVO AIS were less likely to be routed to CSCs compared with men. Further study of the mechanisms behind this disparity is needed.
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Affiliation(s)
- Muhammad Bilal Tariq
- Department of Neurology UTHealth McGovern Medical School Houston TX
- Memorial Hermann Hospital-Texas Medical Center Houston TX
| | - Iman Ali
- Department of Neurology UTHealth McGovern Medical School Houston TX
| | | | | | - Hussain M Azeem
- Department of Neurology UTHealth McGovern Medical School Houston TX
| | - Swapnil Khose
- Department of Neurology UTHealth McGovern Medical School Houston TX
- Memorial Hermann Hospital-Texas Medical Center Houston TX
| | - Victor Lopez
- Department of Neurosurgery Boston Medical Center Boston MA
| | | | - Louise D McCullough
- Department of Neurology UTHealth McGovern Medical School Houston TX
- Memorial Hermann Hospital-Texas Medical Center Houston TX
| | - Sunil A Sheth
- Department of Neurology UTHealth McGovern Medical School Houston TX
- Memorial Hermann Hospital-Texas Medical Center Houston TX
| | - Youngran Kim
- Department of Management, Policy and Community Health UTHealth School of Public Health Houston TX
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Du EHY, Tenenbaum MN, Bhadelia RA, Sotman TE, Edlow JA, Selim MH, Chang YM. Major radiological outcomes of CTA head and neck performed for dizziness in a major academic Emergency Department. Neuroradiol J 2023; 36:259-266. [PMID: 36045600 PMCID: PMC10268097 DOI: 10.1177/19714009221124304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Purpose: Routine head and neck CTAs (CTAhead+neck) performed for dizziness in the Emergency Department (ED) has steadily increased, but its clinical utility is still poorly elucidated. Our purpose was to assess the radiologic outcomes of CTAhead+neck in ED dizziness patients.Methods: ED dizziness patients with CTAhead+neck from January 2010 through November 2019 were retrospectively identified and further stratified into central vertigo (CV), peripheral vertigo (PV), and non-specific dizziness (NSD) groups by final clinical diagnoses. Findings on CTAhead+neck (vessel stenosis >50%, occlusion, dissection, and infarct), and infarct on subsequent MRI if performed, were assessed. Differences in imaging findings were analyzed using chi-square or Fisher's exact tests.Results: Of 867 dizziness patients, 88 were diagnosed with CV, 383 with PV, and 396 with NSD. On CTAhead+neck, 11.4% of all patients had posterior CTA findings, including posterior occlusions (4.2%), dissections (1.2%), and infarcts (2.3%). CV patients had more posterior circulation findings (31.8%) versus PV (9.9%) and NSD (8.3%) patients (both p < 0.01). 21.6% of CV patients had acute infarcts on CT versus none for PV and 0.03% for NSD patients (both p < 0.01). On MRI, 46.6% of CV patients had acute posterior circulation infarcts versus none for PV and 0.3% for NSD patients (p < 0.01).Conclusion: Diagnostic yield for CTAhead+neck for dizziness patients is low except in central vertigo patients which constitute only 1/10th of CTAs performed. Our single institution results support that CTAhead+neck is likely low-yield in patients with high clinical suspicion for PV or NSD and further studies are needed to test this hypothesis.
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Affiliation(s)
- Elizabeth HY Du
- Department of Radiology, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Mary N Tenenbaum
- Department of Radiology, Baystate Medical Center, Springfield, MA, USA
| | - Rafeeque A Bhadelia
- Department of Radiology, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Timothy E Sotman
- Department of Radiology, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Jonathan A Edlow
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Magdy H Selim
- Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Yu-Ming Chang
- Department of Radiology, Beth Israel Deaconess Medical Center, Boston, MA, USA
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20
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Naveed H, Almasri M, Kazani B, Nauman A, Akhtar N, Singh R, Kamran S, Al Jerdi S, Thermalingem S, Shuaib A. Women and stroke: disparities in clinical presentation, severity, and short- and long-term outcomes. Front Neurol 2023; 14:1147858. [PMID: 37255725 PMCID: PMC10225500 DOI: 10.3389/fneur.2023.1147858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 04/17/2023] [Indexed: 06/01/2023] Open
Abstract
Objectives There are limited data from the Middle East on sex-related differences in short- and long-term stroke outcomes. We present 8 years of experience based on the Qatar stroke database. Setting The Qatar stroke database prospectively collects data on all stroke patients admitted to Hamad General Hospital. For this study, we compared female and male acute ischemic stroke patients on their characteristics at admission, short-term outcomes [modified Rankin Scale (mRS) score], and long-term outcomes [incidence of major adverse cardiovascular events (MACEs)]. Participants A total of 7,300 patients [F: 1,406 (19.3%), M: 5,894 (80.7%); mean age 55.1 ± 13.3 (F: 61.6 ± 15.1, M: 53.5 ± 12.3; p < 0.001)] were admitted with acute ischemic stroke. Results Significantly fewer women presented within 4.5 h of onset (F: 29% vs. M: 32.8%; p = 0.01). Although women were more likely to experience severe stroke (NIHSS >10; F: 19.9% vs. M: 14.5%; p < 0.001), fewer were treated with thrombolysis (F: 9.8% vs. M: 12.1%; p = 0.02). Women experienced more medical complications (F: 11.7% vs. M: 7.4%; p < 0.001) and tended to have a more prolonged length of stay in the hospital (F: 6.4 ± 7.6 days vs. M: 5.5 ± 6.8 days; p < 0.001). Primary and secondary outcome measures Good outcomes at 90 days (mRS score of 0-2) were less frequent in women (F: 53.3% vs. M: 71.2%; p < 0.001). Fewer female patients were taking antiplatelets (F: 78% vs. M: 84.8%; p < 0.001) or statins (F: 81.2% vs. M: 85.7%; p < 0.001). Significantly more female patients experienced a MACE (F: 12.6% vs. M: 6.5%; p < 0.001). Conclusion Older age at presentation contributes to poor outcomes following acute stroke in women. Other contributing factors include delays in admission to the hospital, lower rates of thrombolysis, and lower rates of provision of preventative treatments.
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Affiliation(s)
- Hiba Naveed
- Weill Cornell College of Medicine, Doha, Qatar
| | | | | | | | - Naveed Akhtar
- The Neuroscience Institute, Hamad Medical Corporation, Doha, Qatar
| | - Rajvir Singh
- The Neuroscience Institute, Hamad Medical Corporation, Doha, Qatar
| | - Saadat Kamran
- The Neuroscience Institute, Hamad Medical Corporation, Doha, Qatar
| | | | - Sathvika Thermalingem
- Neurology Division, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Ashfaq Shuaib
- Neurology Division, Department of Medicine, University of Alberta, Edmonton, AB, Canada
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21
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Helboe KS, Eddelien HS, Kruuse C. Visual symptoms in acute stroke - A systematic review of observational studies. Clin Neurol Neurosurg 2023; 229:107749. [PMID: 37163931 DOI: 10.1016/j.clineuro.2023.107749] [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: 03/21/2023] [Revised: 04/25/2023] [Accepted: 04/26/2023] [Indexed: 05/12/2023]
Abstract
OBJECTIVE Atypical symptoms of stroke, such as non-specific visual symptoms, are a challenging aspect of acute stroke diagnostics. Among patients evaluated for stroke in the Emergency Department, 2-28% present with stroke chameleons, and 30-43% with stroke mimics. We aimed to identify the type of visual symptoms present in typical strokes, stroke mimics, and stroke chameleons. PATIENTS AND METHODS By use of Preferred Reporting Items for Systematic Reviews and Meta-Analysis we searched PubMed and Embase for studies with reports of acute visual symptoms in typical strokes vs mimics or chameleons (PROSPERO protocol, ID CRD42022364749). Risk of bias was assessed by The Critical Appraisal Skills Program. RESULTS Thirteen papers were included, comprising data from 9248 patients evaluated for stroke. Compared to mimics, visual symptoms in stroke presented more frequently as hemianopia (28.2% vs 4.8%, 7,4% vs 2.3%, 22% vs 0%), visual loss (11.6% vs 1.8%), visual field defect (11.6% vs 4%, 24% vs 2%, 19% vs 1.7%), eye movement disorder (19.4% vs 6.4%), eye deviation (9.6% vs 0.9%), gaze palsy (32.1% vs 8.6%), oculomotor disturbance (37% vs 0%), and visual inattention (17.5% vs 4%). Compared to strokes, mimics more often presented "non-systematized visual trouble" (10% vs 3%) and blurred vision (22% vs 5%), whereas "visual disturbance" was reported more often in stroke chameleons than in typical strokes (10% vs 3%). CONCLUSION Detailed reports of visual symptoms were lacking in most studies, however blurred vision and "non-systematized visual trouble" were more frequent in mimics, "visual disturbance" in stroke chameleons, and negative visual symptoms such as visual field defects in typical strokes. A more systematic and detailed approach to visual symptoms may facilitate acute stroke recognition in patients with visual symptoms.
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Affiliation(s)
- Katrine Sofie Helboe
- Department of Neurology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark & Dept of Clinical Medicine, University of Copenhagen, Denmark
| | - Heidi Shil Eddelien
- Department of Neurology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark & Dept of Clinical Medicine, University of Copenhagen, Denmark
| | - Christina Kruuse
- Department of Neurology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark & Dept of Clinical Medicine, University of Copenhagen, Denmark.
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22
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Lin G, Liu F, Xu H, Bao G. Development of a model to predict the risk of cerebral infarction in acute vestibular syndrome. Heliyon 2023; 9:e14852. [PMID: 37095950 PMCID: PMC10121405 DOI: 10.1016/j.heliyon.2023.e14852] [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: 10/13/2022] [Revised: 03/06/2023] [Accepted: 03/20/2023] [Indexed: 04/26/2023] Open
Abstract
Objectives This study aimed to develop a model to predict the risk of cerebral infarction in acute vestibular syndrome and assist emergency physicians in quickly identifying patients with cerebral infarction. Materials and methods We looked at 262 patients who were split into cerebral infarction and peripheral vertigo groups. Stepwise regression and Lasso's approach were used to screen for variables, and Boothstrap's method was used to evaluate the model's discrimination and calibration. The model's performance was compared against TriAGe+, ABCD2, and PCI scores using the area under the receiver operator characteristic curve. Clinical decision-making was aided by the use of clinical impact and decision curves. Results In the end, nine risk factors were chosen for model 2, and ten risk factors were chosen for model 1. Model 2 was adopted as the final model. The areas under the receiver operator curve value of the model2 were 0.910(P = 0.000), much higher than the areas under the receiver operator curve value of the TriAGe + scores system and that of the PCI scores system. The clinical decision curve shows that when the threshold probability is 0.05, using the nomogram to predict cerebral infarction has more benefits than either the treat-all-patients scheme or the treat-none scheme. The clinical impact curve shows that when the threshold probability is 0.6 the model predicts disease occurrence in general agreement with the occurrence of the real disease. Conclusion This study model can help emergency room physicians quickly triage and treat patients by accurately identifying cerebral infarction patients.
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Affiliation(s)
- Guiming Lin
- Department of Neurology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Mohe Road280, Baoshan District, Shanghai, China
| | - Fangfang Liu
- Department of Neurology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Mohe Road280, Baoshan District, Shanghai, China
| | - Hengshi Xu
- Department of Blood Transfusion, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Mohe Road280, Baoshan District, Shanghai, China
- Corresponding author. Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Mohe Road280, Baoshan District, Shanghai, China.
| | - Guanshui Bao
- Department of Neurology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Mohe Road280, Baoshan District, Shanghai, China
- Corresponding author. Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Mohe Road280, Baoshan District, Shanghai, China.
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Comolli L, Korda A, Zamaro E, Wagner F, Sauter TC, Caversaccio MD, Nikles F, Jung S, Mantokoudis G. Vestibular syndromes, diagnosis and diagnostic errors in patients with dizziness presenting to the emergency department: a cross-sectional study. BMJ Open 2023; 13:e064057. [PMID: 36963793 PMCID: PMC10040076 DOI: 10.1136/bmjopen-2022-064057] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 03/14/2023] [Indexed: 03/26/2023] Open
Abstract
OBJECTIVES We aimed to determine the frequency of vestibular syndromes, diagnoses, diagnostic errors and resources used in patients with dizziness in the emergency department (ED). DESIGN Retrospective cross-sectional study. SETTING Tertiary referral hospital. PARTICIPANTS Adult patients presenting with dizziness. PRIMARY AND SECONDARY OUTCOME MEASURES We collected clinical data from the initial ED report from July 2015 to August 2020 and compared them with the follow-up report if available. We calculated the prevalence of vestibular syndromes and stroke prevalence in patients with dizziness. Vestibular syndromes are differentiated in acute (AVS) (eg, stroke, vestibular neuritis), episodic (EVS) (eg, benign paroxysmal positional vertigo, transient ischaemic attack) and chronic (CVS) (eg, persistent postural-perceptual dizziness) vestibular syndrome. We reported the rate of diagnostic errors using the follow-up diagnosis as the reference standard. RESULTS We included 1535 patients with dizziness. 19.7% (303) of the patients presented with AVS, 34.7% (533) with EVS, 4.6% (71) with CVS and 40.9% (628) with no or unclassifiable vestibular syndrome. The three most frequent diagnoses were stroke/minor stroke (10.1%, 155), benign paroxysmal positional vertigo (9.8%, 150) and vestibular neuritis (9.6%, 148). Among patients with AVS, 25.4% (77) had stroke. The cause of the dizziness remained unknown in 45.0% (692) and 18.0% received a false diagnosis. There was a follow-up in 662 cases (43.1%) and 58.2% with an initially unknown diagnoses received a final diagnosis. Overall, 69.9% of all 1535 patients with dizziness received neuroimaging (MRI 58.2%, CT 11.6%) in the ED. CONCLUSIONS One-fourth of patients with dizziness in the ED presented with AVS with a high prevalence (10%) of vestibular strokes. EVS was more frequent; however, the rate of undiagnosed patients with dizziness and the number of patients receiving neuroimaging were high. Almost half of them still remained without diagnosis and among those diagnosed were often misclassified. Many unclear cases of vertigo could be diagnostically clarified after a follow-up visit.
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Affiliation(s)
- Lukas Comolli
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Athanasia Korda
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Ewa Zamaro
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Franca Wagner
- Department of Diagnostic and Interventional Neuroradiology, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Thomas C Sauter
- Department of Emergency Medicine, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Marco D Caversaccio
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Florence Nikles
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Simon Jung
- Department of Neurology, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Georgios Mantokoudis
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
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24
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Liberman AL, Holl JL, Romo E, Maas M, Song S, Prabhakaran S. Risk assessment of the acute stroke diagnostic process using failure modes, effects, and criticality analysis. Acad Emerg Med 2023; 30:187-195. [PMID: 36565234 DOI: 10.1111/acem.14648] [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: 09/15/2022] [Revised: 12/03/2022] [Accepted: 12/21/2022] [Indexed: 12/25/2022]
Abstract
INTRODUCTION To date, many emergency department (ED)-based quality improvement studies and interventions for acute stroke patients have focused on expediting time-sensitive treatments, particularly reducing door-to-needle time. However, prior to treatment, a diagnosis of stroke must be reached. The ED-based stroke diagnostic process has been understudied despite its importance in assuring high-quality and safe care. METHODS We used a learning collaborative to conduct a failure modes, effects, and criticality analysis (FMECA) of the acute stroke diagnostic process at three health systems in Chicago, IL. Our FMECA was designed to prospectively identify, characterize, and rank order failures in the systems and processes of care that offer opportunities for redesign to improve stroke diagnostic accuracy. Multidisciplinary teams involved in stroke care at five different sites participated in moderated sessions to create an acute stroke diagnostic process map as well as identify failures and existing safeguards. For each failure, a risk priority number and criticality score were calculated. Failures were then ranked, with the highest scores representing the most critical failures to be targeted for redesign. RESULTS A total of 28 steps were identified in the acute stroke diagnostic process. Iterative steps in the process include information gathering, clinical examination, interpretation of diagnostic test results, and reassessment. We found that failure to use existing screening scales to identify patients with large-vessel occlusions early on in their ED course ranked highest. Failure to obtain an accurate history of the index event, failure to suspect acute stroke in triage, and failure to use established stroke screening tools at ED arrival to identify potential stroke patients were also highly ranked. CONCLUSIONS Our study results highlight the critical importance of upstream steps in the acute stroke diagnostic process, particularly the use of existing tools to identify stroke patients who may be eligible for time-sensitive treatments.
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Affiliation(s)
- Ava L Liberman
- Clinical and Translational Neuroscience Unit, Department of Neurology, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York, USA
| | - Jane L Holl
- Department of Neurology, University of Chicago, Chicago, Illinois, USA
| | - Elida Romo
- Department of Neurology, University of Chicago, Chicago, Illinois, USA
| | - Matthew Maas
- Department of Neurology, Northwestern University, Chicago, Illinois, USA
| | - Sarah Song
- Department of Neurology, Rush University, Chicago, Illinois, USA
| | - Shyam Prabhakaran
- Department of Neurology, University of Chicago, Chicago, Illinois, USA
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25
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Fattal D, Platti N. Ocular lateral deviation as a vestibular sign to improve detection of posterior circulation strokes: A review of the literature. J Emerg Med 2023; 64:610-619. [PMID: 37037761 DOI: 10.1016/j.jemermed.2023.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 01/28/2023] [Accepted: 02/17/2023] [Indexed: 03/09/2023]
Abstract
BACKGROUND Posterior circulation stroke can present with dizziness/vertigo without other general neurological symptoms or signs, making it difficult to detect, and missed stroke can deteriorate. Therefore, a sign that can be easily identified during an examination would be helpful to improve the detection of this type of stroke. OBJECTIVE The objective of this review is to highlight an ocular sign that is seen in posterior circulation strokes called ocular lateral deviation (OLD). OLD is mostly seen in dorsolateral medullary strokes, and it is also seen in pontine and cerebellar strokes. OLD is detected by asking a patient to look straight ahead and then briefly close their eyes. Upon re-opening their eyes, the examiner will see that the eyes have deviated to one side; the patient's eyes will then make corrective saccade(s) to return to looking straight ahead. Complete eye deviation is a central sign of posterior circulation stroke. DISCUSSION OLD is an under-recognized vestibular ocular sign of central vestibulopathies including posterior circulation stroke. The most common location is in the dorsolateral medulla, where one-third of such strokes have complete OLD. Eye deviation can also be appreciated on computed tomography or magnetic resonance imaging. OLD can be detected up to 6 months after a posterior circulation stroke. CONCLUSIONS Checking for the sign of complete eye deviation in patients with dizziness/vertigo could be a simple, quick method for detecting posterior circulation stroke, and a means to improving the patients' outcome.
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Affiliation(s)
- Deema Fattal
- Neurology Department, University of Iowa Health Care, Iowa City, Iowa; Iowa City VA Medical Center, Iowa City, Iowa
| | - Nicole Platti
- University of Iowa Carver College of Medicine, Iowa City, Iowa; (Present Institution) Neurology Department, University of South Florida, Tampa, Florida
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26
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Edlow JA, Pronovost PJ. Misdiagnosis in the Emergency Department: Time for a System Solution. JAMA 2023; 329:631-632. [PMID: 36705932 DOI: 10.1001/jama.2023.0577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
This Viewpoint offers 3 insights in response to the AHRQ report on diagnostic errors made in US emergency departments: focus on the delivery systems instead of individuals, establish ways to set definitions and assess error rates, and design safe delivery systems to prevent errors.
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Affiliation(s)
- Jonathan A Edlow
- Beth Israel Deaconess Medical Center, Department of Emergency Medicine, Harvard Medical School, Boston, Massachusetts
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27
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Edwards LS, Cappelen-Smith C, Cordato D, Bivard A, Churilov L, Lin L, Chen C, Garcia-Esperon C, Butcher K, Kleinig T, Choi PMC, Cheng X, Dong Q, Aviv RI, Parsons MW. Optimal CT perfusion thresholds for core and penumbra in acute posterior circulation infarction. Front Neurol 2023; 14:1092505. [PMID: 36846146 PMCID: PMC9947562 DOI: 10.3389/fneur.2023.1092505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 01/23/2023] [Indexed: 02/11/2023] Open
Abstract
Background At least 20% of strokes involve the posterior circulation (PC). Compared to the anterior circulation, posterior circulation infarction (POCI) are frequently misdiagnosed. CT perfusion (CTP) has advanced stroke care by improving diagnostic accuracy and expanding eligibility for acute therapies. Clinical decisions are predicated upon precise estimates of the ischaemic penumbra and infarct core. Current thresholds for defining core and penumbra are based upon studies of anterior circulation stroke. We aimed to define the optimal CTP thresholds for core and penumbra in POCI. Methods Data were analyzed from 331-patients diagnosed with acute POCI enrolled in the International-stroke-perfusion-registry (INSPIRE). Thirty-nine patients with baseline multimodal-CT with occlusion of a large PC-artery and follow up diffusion weighted MRI at 24-48 h were included. Patients were divided into two-groups based on artery-recanalization on follow-up imaging. Patients with no or complete recanalisation were used for penumbral and infarct-core analysis, respectively. A Receiver operating curve (ROC) analysis was used for voxel-based analysis. Optimality was defined as the CTP parameter and threshold which maximized the area-under-the-curve. Linear regression was used for volume based analysis determining the CTP threshold which resulted in the smallest mean volume difference between the acute perfusion lesion and follow up MRI. Subanalysis of PC-regions was performed. Results Mean transit time (MTT) and delay time (DT) were the best CTP parameters to characterize ischaemic penumbra (AUC = 0.73). Optimal thresholds for penumbra were a DT >1 s and MTT>145%. Delay time (DT) best estimated the infarct core (AUC = 0.74). The optimal core threshold was a DT >1.5 s. The voxel-based analyses indicated CTP was most accurate in the calcarine (Penumbra-AUC = 0.75, Core-AUC = 0.79) and cerebellar regions (Penumbra-AUC = 0.65, Core-AUC = 0.79). For the volume-based analyses, MTT >160% demonstrated best correlation and smallest mean-volume difference between the penumbral estimate and follow-up MRI (R 2 = 0.71). MTT >170% resulted in the smallest mean-volume difference between the core estimate and follow-up MRI, but with poor correlation (R 2 = 0.11). Conclusion CTP has promising diagnostic utility in POCI. Accuracy of CTP varies by brain region. Optimal thresholds to define penumbra were DT >1 s and MTT >145%. The optimal threshold for core was a DT >1.5 s. However, CTP core volume estimates should be interpreted with caution.
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Affiliation(s)
- Leon Stephen Edwards
- Department of Neurology and Neurophysiology, Liverpool Hospital, Sydney, NSW, Australia,South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia,Sydney Brain Centre, Ingham Institute of Applied Medical Research, Sydney, NSW, Australia,School of Medicine and Public Health, University of Newcastle, Newcastle, NSW, Australia,*Correspondence: Leon Stephen Edwards ✉
| | - Cecilia Cappelen-Smith
- Department of Neurology and Neurophysiology, Liverpool Hospital, Sydney, NSW, Australia,South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia,Sydney Brain Centre, Ingham Institute of Applied Medical Research, Sydney, NSW, Australia
| | - Dennis Cordato
- Department of Neurology and Neurophysiology, Liverpool Hospital, Sydney, NSW, Australia,South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia,Sydney Brain Centre, Ingham Institute of Applied Medical Research, Sydney, NSW, Australia
| | - Andrew Bivard
- School of Medicine and Public Health, University of Newcastle, Newcastle, NSW, Australia,Melbourne Brain Centre at the Royal Melbourne Hospital, University of Melbourne, Parkville, VIC, Australia
| | - Leonid Churilov
- School of Medicine and Public Health, University of Newcastle, Newcastle, NSW, Australia,Melbourne Brain Centre at the Royal Melbourne Hospital, University of Melbourne, Parkville, VIC, Australia
| | - Longting Lin
- Department of Neurology and Neurophysiology, Liverpool Hospital, Sydney, NSW, Australia,South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia,School of Medicine and Public Health, University of Newcastle, Newcastle, NSW, Australia
| | - Chushuang Chen
- School of Medicine and Public Health, University of Newcastle, Newcastle, NSW, Australia,Melbourne Brain Centre at the Royal Melbourne Hospital, University of Melbourne, Parkville, VIC, Australia
| | - Carlos Garcia-Esperon
- School of Medicine and Public Health, University of Newcastle, Newcastle, NSW, Australia,Department of Neurology, John Hunter Hospital, Newcastle, NSW, Australia,Stroke and Brain Injury Group, Hunter Medical Research Institute and the University of Newcastle, Newcastle, NSW, Australia
| | - Kenneth Butcher
- Prince of Wales Clinical School, University of New South Wales, Sydney, NSW, Australia
| | - Tim Kleinig
- Department of Neurology, Royal Adelaide Hospital, Adelaide, SA, Australia
| | - Phillip M. C. Choi
- Department of Neurosciences, Box Hill Hospital, Eastern Health Clinical School, Monash University, Melbourne, VIC, Australia
| | - Xin Cheng
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Qiang Dong
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Richard I. Aviv
- Division of Neuroradiology, Department of Radiology, University of Ottawa and The Ottawa Hospital, Ottawa, ON, Canada
| | - Mark William Parsons
- Department of Neurology and Neurophysiology, Liverpool Hospital, Sydney, NSW, Australia,South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia,Sydney Brain Centre, Ingham Institute of Applied Medical Research, Sydney, NSW, Australia,School of Medicine and Public Health, University of Newcastle, Newcastle, NSW, Australia
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Liberman AL, Kamel H, Lappin R, Ishak A, Navi BB, Parikh NS, Merkler A, Razzak J. Prevalence of neurological complaints among emergency department patients with severe hypertension. Am J Emerg Med 2023; 64:90-95. [PMID: 36493539 PMCID: PMC9845141 DOI: 10.1016/j.ajem.2022.11.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 11/13/2022] [Accepted: 11/23/2022] [Indexed: 12/02/2022] Open
Abstract
OBJECTIVE Severe hypertension can accompany neurological symptoms without obvious signs of target organ damage. However, acute cerebrovascular events can also be a cause and consequence of severe hypertension. We therefore use US population-level data to determine prevalence and clinical characteristics of patients with severe hypertension and neurological complaints. METHODS We used nationally representative data from the National Hospital Ambulatory Medical Care Survey (NHAMCS) collected in 2016-2019 to identify adult ED patients with severely elevated blood pressure (BP) defined as systolic BP ≥ 180 mmHg and/or diastolic BP ≥120 mmHg. We used ED reason for visit data fields to define neurological complaints and used diagnosis data fields to define acute target organ damage. We applied survey visit weights to obtain national estimates. RESULTS Based on 5083 observations, an estimated 40.4 million patients (95% CI: 37.5-43.0 million) in EDs nationwide from 2016 to 2019 had severe hypertension, equating to 6.1% (95% CI: 5.7-6.5%) of all ED visits. Only 2.8% (95% CI: 2.0-3.9%) of ED patients with severe hypertension were diagnosed with acute cerebrovascular disease; hypertensive urgency was diagnosed in 92.0% (95% CI: 90.3-93.4%). Neurological complaints were frequent in both patients with (75.6%) and without (19.9%) cerebrovascular diagnoses. Hypertensive urgency patients with neurological complaints were more often older, female, had prior stroke/TIA, and had neuroimaging than patients without these complaints. Non-migraine headache and vertigo were the most common neurological complaints recorded. CONCLUSION In a nationally representative survey, one-in-sixteen ED patients had severely elevated BP and one-fifth of those patients had neurological complaints.
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Affiliation(s)
- Ava L Liberman
- Clinical and Translational Neuroscience Unit, Department of Neurology and Feil Family Brain and Mind Research Institute, Weill Cornell Medicine.
| | - Hooman Kamel
- Clinical and Translational Neuroscience Unit, Department of Neurology and Feil Family Brain and Mind Research Institute, Weill Cornell Medicine
| | - Richard Lappin
- Department of Emergency Medicine, Weill Cornell Medicine
| | - Amgad Ishak
- Clinical and Translational Neuroscience Unit, Department of Neurology and Feil Family Brain and Mind Research Institute, Weill Cornell Medicine
| | - Babak B Navi
- Clinical and Translational Neuroscience Unit, Department of Neurology and Feil Family Brain and Mind Research Institute, Weill Cornell Medicine
| | - Neal S Parikh
- Clinical and Translational Neuroscience Unit, Department of Neurology and Feil Family Brain and Mind Research Institute, Weill Cornell Medicine
| | - Alexander Merkler
- Clinical and Translational Neuroscience Unit, Department of Neurology and Feil Family Brain and Mind Research Institute, Weill Cornell Medicine
| | - Junaid Razzak
- Department of Emergency Medicine, Weill Cornell Medicine
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29
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Eysenbach G, Tan X, Padman R. A Machine Learning Approach to Support Urgent Stroke Triage Using Administrative Data and Social Determinants of Health at Hospital Presentation: Retrospective Study. J Med Internet Res 2023; 25:e36477. [PMID: 36716097 PMCID: PMC9926350 DOI: 10.2196/36477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 07/17/2022] [Accepted: 12/18/2022] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND The key to effective stroke management is timely diagnosis and triage. Machine learning (ML) methods developed to assist in detecting stroke have focused on interpreting detailed clinical data such as clinical notes and diagnostic imaging results. However, such information may not be readily available when patients are initially triaged, particularly in rural and underserved communities. OBJECTIVE This study aimed to develop an ML stroke prediction algorithm based on data widely available at the time of patients' hospital presentations and assess the added value of social determinants of health (SDoH) in stroke prediction. METHODS We conducted a retrospective study of the emergency department and hospitalization records from 2012 to 2014 from all the acute care hospitals in the state of Florida, merged with the SDoH data from the American Community Survey. A case-control design was adopted to construct stroke and stroke mimic cohorts. We compared the algorithm performance and feature importance measures of the ML models (ie, gradient boosting machine and random forest) with those of the logistic regression model based on 3 sets of predictors. To provide insights into the prediction and ultimately assist care providers in decision-making, we used TreeSHAP for tree-based ML models to explain the stroke prediction. RESULTS Our analysis included 143,203 hospital visits of unique patients, and it was confirmed based on the principal diagnosis at discharge that 73% (n=104,662) of these patients had a stroke. The approach proposed in this study has high sensitivity and is particularly effective at reducing the misdiagnosis of dangerous stroke chameleons (false-negative rate <4%). ML classifiers consistently outperformed the benchmark logistic regression in all 3 input combinations. We found significant consistency across the models in the features that explain their performance. The most important features are age, the number of chronic conditions on admission, and primary payer (eg, Medicare or private insurance). Although both the individual- and community-level SDoH features helped improve the predictive performance of the models, the inclusion of the individual-level SDoH features led to a much larger improvement (area under the receiver operating characteristic curve increased from 0.694 to 0.823) than the inclusion of the community-level SDoH features (area under the receiver operating characteristic curve increased from 0.823 to 0.829). CONCLUSIONS Using data widely available at the time of patients' hospital presentations, we developed a stroke prediction model with high sensitivity and reasonable specificity. The prediction algorithm uses variables that are routinely collected by providers and payers and might be useful in underresourced hospitals with limited availability of sensitive diagnostic tools or incomplete data-gathering capabilities.
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Affiliation(s)
| | - Xuan Tan
- Department of Information Systems and Analytics, Leavey School of Business, Santa Clara University, Santa Clara, CA, United States
| | - Rema Padman
- The H John Heinz III College of Information Systems and Public Policy, Carnegie Mellon University, Pittsburgh, PA, United States
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30
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Joundi RA, Yu AYX, Smith EE, Zerna C, Penn AM, Balshaw RF, Votova K, Bibok MB, Penn M, Saly V, Hegedus J, Coutts SB, Yu AYX, Penn AM, Trivedi A, Cook J, Morrison J, Blackwood K, Richards K, Votova K, Nealis M, Bibok MB, Penn M, Beattyova P, Rosenberg P, Frost S, Grant C, Hedgedus J, Grant S, Watson T, Saly V, Sedgwick C, Lesperance ML, Croteau NS, Appireddy R, Balshaw RF, Field TS, Dubuc V, Demchuk AM, Jambula A, Le A, Menon BK, Calvert C, Kenney C, Zerna C, Nikneshan D, Smith EE, Klourfeld E, Wagner G, Klein G, Aram H, Desai J, Ryckborst K, Bilston L, Hill MD, Almekhlafi M, Godfrey N, Imoukheude O, Stys P, Barber PA, Couillard P, Eswaradas P, Rhandawa P, Coutts SB, Bal S, Peters S, Save S, Subramaniam S, Musuka T, Stewart T, Hong ZM. Association Between Duration of Transient Neurological Events and Diffusion-Weighted Brain Lesions. J Am Heart Assoc 2023; 12:e027861. [PMID: 36695298 PMCID: PMC9973650 DOI: 10.1161/jaha.122.027861] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Background The relationship between duration of transient neurological events and presence of diffusion-weighted lesions by symptom type is unclear. Methods and Results This was a substudy of SpecTRA (Spectrometry for Transient Ischemic Attack Rapid Assessment), a multicenter prospective cohort of patients with minor ischemic cerebrovascular events or stroke mimics at academic emergency departments in Canada. For this study we included patients with resolved symptoms and determined the presence of diffusion-weighted imaging (DWI) lesion on magnetic resonance imaging within 7 days. Using logistic regression, we evaluated the association between symptom duration and DWI lesion, assessing for interaction with symptom type (focal only versus nonfocal/mixed), and adjusting for age, sex, education, comorbidities, and systolic blood pressure. Of 658 patients included, a DWI lesion was present in 232 (35.1%). There was a significant interaction between symptom duration and symptom type. For those with focal-only symptoms, there was a continuous increase in DWI probability up to 24 hours in duration (ranging from ≈40% to 80% probability). In stratified analyses, the increase in probability of DWI lesion with increased duration of focal symptoms was seen in women but not men. For those with nonfocal or mixed symptoms, predicted probability of DWI lesion was ≈35% and was greater in men, but did not increase with longer duration. Conclusions Increased duration of neurological deficits is associated with greater probability of DWI lesion in those with focal symptoms only. For individuals with nonfocal or mixed symptoms, about one-third had DWI lesions, but the probability did not increase with duration. These results may be important to improve risk stratification of transient neurological events.
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Affiliation(s)
- Raed A. Joundi
- Division of Neurology, Hamilton Health SciencesMcMaster University & Population Health Research InstituteHamiltonOntarioCanada
| | - Amy Y. X. Yu
- Division of Neurology, Department of MedicineUniversity of Toronto, Sunnybrook Health Sciences CentreTorontoOntarioCanada
| | - Eric E. Smith
- Departments of Clinical Neurosciences and Community Health SciencesUniversity of CalgaryAlbertaCanada
| | - Charlotte Zerna
- Department of Clinical Neurosciences and Diagnostic ImagingUniversity of Calgary Cumming School of MedicineCalgaryAlbertaCanada
| | - Andrew M. Penn
- Stroke Rapid Assessment Unit, Island HealthVictoriaBritish ColumbiaCanada
| | - Robert F. Balshaw
- George & Fay Yee Centre for Healthcare InnovationUniversity of ManitobaWinnipegManitobaCanada
| | - Kristine Votova
- Island Health Regional Health Authority, Division of Medical SciencesUniversity of VictoriaVictoriaBritish ColumbiaCanada
| | - Maximilian B. Bibok
- Department of Research and Capacity Building, Island HealthVictoriaBritish ColumbiaCanada
| | - Melanie Penn
- Stroke Rapid Assessment Unit, Island HealthVictoriaBritish ColumbiaCanada
| | - Viera Saly
- Stroke Rapid Assessment Unit, Island HealthVictoriaBritish ColumbiaCanada
| | - Janka Hegedus
- Stroke Rapid Assessment Unit, Island HealthVictoriaBritish ColumbiaCanada
| | - Shelagh B. Coutts
- Departments of Clinical Neurosciences and Community Health SciencesUniversity of CalgaryAlbertaCanada
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Differential Diagnosis of Visual Phenomena Associated with Migraine: Spotlight on Aura and Visual Snow Syndrome. Diagnostics (Basel) 2023; 13:diagnostics13020252. [PMID: 36673062 PMCID: PMC9857878 DOI: 10.3390/diagnostics13020252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 12/30/2022] [Accepted: 12/30/2022] [Indexed: 01/11/2023] Open
Abstract
Migraine is a severe and common primary headache disorder, characterized by pain as well as a plethora of non-painful symptoms. Among these, visual phenomena have long been known to be associated with migraine, to the point where they can constitute a hallmark of the disease itself. In this review we focus on two key visual disorders that are directly or indirectly connected to migraine: visual aura and visual snow syndrome (VSS). Visual aura is characterized by the transient presence of positive and negative visual symptoms, before, during or outside of a migraine attack. VSS is a novel stand-alone phenomenon which has been shown to be comorbid with migraine. We discuss key clinical features of the two disorders, including pathophysiological mechanisms, their differential diagnoses and best treatment practices. Our aim is to provide an aid for clinicians and researchers in recognizing these common visual phenomena, which can even appear simultaneously in patients with an underlying migraine biology.
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Rastall DP, Green K. Deep learning in acute vertigo diagnosis. J Neurol Sci 2022; 443:120454. [PMID: 36379134 DOI: 10.1016/j.jns.2022.120454] [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: 05/31/2022] [Revised: 09/24/2022] [Accepted: 10/05/2022] [Indexed: 11/13/2022]
Abstract
Recent advances in artificial intelligence are transforming healthcare and there are increasing efforts to apply these breakthroughs to the diagnosis of acute vertigo. Because the diagnosis of vertigo relies on the analysis of eye movements, there are several unique considerations that must be made when implementing deep learning approaches to vertigo. This review discusses the need for diagnostic aids for acute vertigo, the techniques used to preprocess eye movement data and adapt deep learning models to vertigo, and summarizes and analyzes all published models to date.
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Affiliation(s)
- David Pw Rastall
- The Johns Hopkins University School of Medicine, Department of Neurology, Division of Neuro-Visual & Vestibular Disorders, USA.
| | - Kemar Green
- The Johns Hopkins University School of Medicine, Department of Neurology, Division of Advanced Clinical Neurology, USA
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Shah VP, Oliveira J E Silva L, Farah W, Seisa MO, Balla AK, Christensen A, Farah M, Hasan B, Bellolio F, Murad MH. Diagnostic accuracy of the physical examination in emergency department patients with acute vertigo or dizziness: A systematic review and meta-analysis for GRACE-3. Acad Emerg Med 2022; 30:552-578. [PMID: 36453134 DOI: 10.1111/acem.14630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 11/07/2022] [Accepted: 11/07/2022] [Indexed: 12/03/2022]
Abstract
BACKGROUND History and physical examination are key features to narrow the differential diagnosis of central versus peripheral causes in patients presenting with acute vertigo. We conducted a systematic review and meta-analysis of the diagnostic test accuracy of physical examination findings. METHODS This study involved a patient-intervention-control-outcome (PICO) question: (P) adult ED patients with vertigo/dizziness; (I) presence/absence of specific physical examination findings; and (O) central (ischemic stroke, hemorrhage, others) versus peripheral etiology. Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) was assessed. RESULTS From 6309 titles, 460 articles were retrieved, and 43 met the inclusion criteria: general neurologic examination-five studies, 869 patients, pooled sensitivity 46.8% (95% confidence interval [CI] 32.3%-61.9%, moderate certainty) and specificity 92.8% (95% CI 75.7%-98.1%, low certainty); limb weakness/hemiparesis-four studies, 893 patients, sensitivity 11.4% (95% CI 5.1%-23.6%, high) and specificity 98.5% (95% CI 97.1%-99.2%, high); truncal/gait ataxia-10 studies, 1810 patients (increasing severity of truncal ataxia had an increasing sensitivity for central etiology, sensitivity 69.7% [43.3%-87.9%, low] and specificity 83.7% [95% CI 52.1%-96.0%, low]); dysmetria signs-four studies, 1135 patients, sensitivity 24.6% (95% CI 15.6%-36.5%, high) and specificity 97.8% (94.4%-99.2%, high); head impulse test (HIT)-17 studies, 1366 patients, sensitivity 76.8% (64.4%-85.8%, low) and specificity 89.1% (95% CI 75.8%-95.6%, moderate); spontaneous nystagmus-six studies, 621 patients, sensitivity 52.3% (29.8%-74.0%, moderate) and specificity 42.0% (95% CI 15.5%-74.1%, moderate); nystagmus type-16 studies, 1366 patients (bidirectional, vertical, direction changing, or pure torsional nystagmus are consistent with a central cause of vertigo, sensitivity 50.7% [95% CI 41.1%-60.2%, moderate] and specificity 98.5% [95% CI 91.7%-99.7%, moderate]); test of skew-15 studies, 1150 patients (skew deviation is abnormal and consistent with central etiology, sensitivity was 23.7% [95% CI 15%-35.4%, moderate] and specificity 97.6% [95% CI 96%-98.6%, moderate]); HINTS (head impulse, nystagmus, test of skew)-14 studies, 1781 patients, sensitivity 92.9% (95% CI 79.1%-97.9%, high) and specificity 83.4% (95% CI 69.6%-91.7%, moderate); and HINTS+ (HINTS with hearing component)-five studies, 342 patients, sensitivity 99.0% (95% CI 73.6%-100%, high) and specificity 84.8% (95% CI 70.1%-93.0%, high). CONCLUSIONS Most neurologic examination findings have low sensitivity and high specificity for a central cause in patients with acute vertigo or dizziness. In acute vestibular syndrome (monophasic, continuous, persistent dizziness), HINTS and HINTS+ have high sensitivity when performed by trained clinicians.
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Affiliation(s)
| | - Lucas Oliveira J E Silva
- Department of Emergency Medicine, Mayo Clinic, Rochester, Minnesota, USA.,Department of Emergency Medicine, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Wigdan Farah
- Evidence-Based Practice Center, Mayo Clinic, Rochester, Minnesota, USA
| | - Mohamed O Seisa
- Evidence-Based Practice Center, Mayo Clinic, Rochester, Minnesota, USA
| | | | - April Christensen
- Department of Medicine, Division of Community Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Magdoleen Farah
- Evidence-Based Practice Center, Mayo Clinic, Rochester, Minnesota, USA
| | - Bashar Hasan
- Evidence-Based Practice Center, Mayo Clinic, Rochester, Minnesota, USA
| | - Fernanda Bellolio
- Department of Emergency Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - M Hassan Murad
- Evidence-Based Practice Center, Mayo Clinic, Rochester, Minnesota, USA
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Høllesli LJ, Ajmi SC, Kurz MW, Tysland TB, Hagir M, Dalen I, Qvindesland SA, Ersdal H, Kurz KD. Simulation-based team-training in acute stroke: Is it safe to speed up? Brain Behav 2022; 12:e2814. [PMID: 36416494 PMCID: PMC9759129 DOI: 10.1002/brb3.2814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 10/01/2022] [Accepted: 10/18/2022] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND In acute ischemic stroke (AIS), rapid treatment with intravenous thrombolysis (IVT) is crucial for good clinical outcome. Weekly simulation-based team-training of the stroke treatment team was implemented, resulting in faster treatment times. The aim of this study was to assess whether this time reduction led to a higher proportion of stroke mimics (SMs) among patients who received IVT for presumed AIS, and whether these SM patients were harmed by intracranial hemorrhage (ICH). METHODS All suspected AIS patients treated with IVT between January 1, 2015 and December 31, 2020 were prospectively registered. In 2017, weekly in situ simulation-based team-training involving the whole stroke treatment team was introduced. To analyze possible unintended effects of simulation training, the proportion of SMs among patients who received IVT for presumed AIS were identified by clinical and radiological evaluation. Additionally, we identified the extent of symptomatic ICH (sICH) in IVT-treated SM patients. RESULTS From 2015 to 2020, 959 patients were treated with IVT for symptoms of AIS. After introduction of simulation training, the proportion of patients treated with IVT who were later diagnosed as SMs increased significantly (15.9% vs. 24.4%, p = .003). There were no ICH complications in the SM patients treated before, whereas two SM patients suffered from asymptomatic ICH after introduction of simulation training (p = 1.0). When subgrouping SMs into prespecified categories, only the group diagnosed with peripheral vertigo increased significantly (2.5% vs. 8.6%, p < .001). CONCLUSIONS Simulation training of the acute stroke treatment team was associated with an increase in the proportion of patients treated with IVT for a suspected AIS who were later diagnosed with peripheral vertigo. The proportion of other SM groups among IVT-treated patients did not change significantly. No sICH was detected in IVT-treated SM patients.
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Affiliation(s)
- Liv Jorunn Høllesli
- Stavanger Medical Imaging Laboratory (SMIL), Department of Radiology, Stavanger University Hospital, Stavanger, Norway.,Department of Electrical Engineering and Computer Science, University of Stavanger, Stavanger, Norway
| | - Soffien Chadli Ajmi
- Neurology Research Group, Department of Neurology, Stavanger University Hospital, Stavanger, Norway.,Department of Quality and Health Technology, University of Stavanger, Stavanger, Norway
| | - Martin W Kurz
- Neurology Research Group, Department of Neurology, Stavanger University Hospital, Stavanger, Norway.,Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Thomas Bailey Tysland
- Neurology Research Group, Department of Neurology, Stavanger University Hospital, Stavanger, Norway
| | - Morten Hagir
- Department of Radiology, Hospital of Southern Norway Kristiansand, Kristiansand, Norway
| | - Ingvild Dalen
- Department of Research, Section of Biostatistics, Stavanger University Hospital, Stavanger, Norway
| | - Sigrun Anna Qvindesland
- Department of Research, Simulation Section, Stavanger University Hospital, Stavanger, Norway
| | - Hege Ersdal
- Critical Care and Anesthesiology Research Group, Stavanger University Hospital, Stavanger, Norway.,Faculty of Health Sciences, University of Stavanger, Stavanger, Norway
| | - Kathinka D Kurz
- Stavanger Medical Imaging Laboratory (SMIL), Department of Radiology, Stavanger University Hospital, Stavanger, Norway.,Department of Electrical Engineering and Computer Science, University of Stavanger, Stavanger, Norway
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Risk of stroke is low after transient ischemic attack presentation with isolated dizziness. CAN J EMERG MED 2022; 24:844-852. [PMID: 36260218 DOI: 10.1007/s43678-022-00391-0] [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: 05/02/2022] [Accepted: 09/28/2022] [Indexed: 02/08/2023]
Abstract
OBJECTIVE Stroke presenting as dizziness is a diagnostic challenge in frontline settings, given the multitude of benign conditions that present similarly. The risk of stroke after episodic dizziness is unknown, leading to divergent guidance on optimal workup and management. Prior TIA risk scores have shown a history of dizziness is a negative predictor of subsequent stroke. Our objective was to assess the subsequent stroke risk within 90 days following emergency department assessment (ED) for isolated dizziness diagnosed as TIA during the index visit. METHODS We conducted prospective, multicenter cohort studies at 13 Canadian EDs over 11 years. We enrolled patients diagnosed with TIA and compared patients with isolated dizziness to those with other neurological deficits. Our primary outcome was subsequent stroke within 90 days. Secondary outcomes were subsequent stroke within 2, 7, and 30 days, respectively, as well as subsequent TIA within 90 days. RESULTS Only 4/483 (0.8%) patients with isolated dizziness had a stroke within 90 days compared to 320/11024 (2.9%) of those with any focal neurological sign or symptom (RR 0.29, 95% CI 0.11-0.76). Over the first 90 days, the two groups differ significantly in their probability of stroke (p = 0.007). Subsequent TIA was also significantly less common in the isolated dizziness group (1.7% vs. 5.6%, p = 0.001) with a relative risk of 0.30 (95% CI 0.15-0.60). CONCLUSION The risk of subsequent stroke following ED presentation for TIA is low when the presenting symptoms are isolated dizziness.
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36
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An updated review and meta-analysis of screening tools for stroke in the emergency room and prehospital setting. J Neurol Sci 2022; 442:120423. [PMID: 36201961 DOI: 10.1016/j.jns.2022.120423] [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: 06/17/2022] [Accepted: 09/13/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Stroke screening tools should have good diagnostic performance for early diagnosis and a proper therapeutic plan. This paper describes and compares various diagnostic tools used to identify stroke in emergency departments and prehospital setting. METHODS The meta-analysis was conducted according to the Preferred Reporting Items for a Systematic Review and Meta-analysis of Diagnostic Test Accuracy Studies (PRISMA-DTA) guidelines. The PubMed and Scopus databases were searched until December 31, 2021, for studies published on stroke screening tools. These tools' diagnostic performance (sensitivity and specificity) was pooled using a bivariate random-effects model whenever appropriate. RESULTS Eleven screening tools for stroke were identified in 29 different studies. The various tools had a wide range of sensitivity and specificity in different studies. In the meta-analysis, the Cincinnati Pre-hospital Stroke Scale, Face Arm Speech Test, and Recognition of Stroke in the Emergency Room (ROSIER) had sensitivity (between 83 and 91%) but poor specificity (all below 64%). When comparing all the tools, ROSIER had the highest sensitivity 90.5%. Los Angeles Pre-hospital Stroke Screen performed best in terms of specificity 88.7% but had low sensitivity (73.9%). Melbourne Ambulance Stroke Screen had a balanced performance in terms of sensitivity (86%) and specificity (76%). Sensitivity analysis consisting of only prospective studies showed a similar range of sensitivity and specificity. CONCLUSION All the stroke screening tools included in the review were comparable, but no clear superior screening tool could be identified. Simple screening tools like Cincinnati prehospital stroke scale (CPSS) have similar performance compared to more complex tools.
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Patrick L. Headache and acute cerebrovascular disease: How do we differentiate primary and secondary headache disorders in the emergency setting? Headache 2022; 62:1073-1074. [DOI: 10.1111/head.14409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 09/21/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Lauren Patrick
- Neurovascular Division University of California San Francisco San Francisco California USA
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Liberman AL, Zhang C, Lipton RB, Kamel H, Parikh NS, Navi BB, Segal AZ, Razzak J, Newman-Toker DE, Merkler AE. Short-term stroke risk after emergency department treat-and-release headache visit. Headache 2022; 62:1198-1206. [PMID: 36073865 PMCID: PMC10041409 DOI: 10.1111/head.14387] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 08/02/2022] [Indexed: 02/06/2023]
Abstract
OBJECTIVE To evaluate whether patients discharged to home after an emergency department (ED) visit for headache face a heightened short-term risk of stroke. BACKGROUND Stroke hospitalizations that occur soon after ED visits for headache complaints may reflect diagnostic error. METHODS We conducted a retrospective cohort study using statewide administrative claims data for all ED visits and admissions at nonfederal hospitals in Florida 2005-2018 and New York 2005-2016. Using standard International Classification of Diseases (ICD) codes, we identified adult patients discharged to home from the ED (treat-and-release visit) with a benign headache diagnosis (cohort of interest) as well as those with a diagnosis of renal colic or back pain (negative controls). The primary study outcome was hospitalization within 30 days for stroke (ischemic or hemorrhagic) defined using validated ICD codes. We assess the relationship between index ED visit discharge diagnosis and stroke hospitalization adjusting for patient demographics and vascular comorbidities. RESULTS We identified 1,502,831 patients with an ED treat-and-release headache visit; mean age was 41 (standard deviation: 17) years and 1,044,520 (70%) were female. A total of 2150 (0.14%) patients with headache were hospitalized for stroke within 30 days. In adjusted analysis, stroke risk was higher after headache compared to renal colic (hazard ratio [HR]: 2.69; 95% confidence interval [CI]: 2.29-3.16) or back pain (HR: 4.0; 95% CI: 3.74-4.3). In the subgroup of 26,714 (1.78%) patients with headache who received brain magnetic resonance imaging at index ED visit, stroke risk was only slightly elevated compared to renal colic (HR: 1.47; 95% CI: 1.22-1.78) or back pain (HR: 1.49; 95% CI: 1.24-1.80). CONCLUSION Approximately 1 in 700 patients discharged to home from the ED with a headache diagnosis had a stroke in the following month. Stroke risk was three to four times higher after an ED visit for headache compared to renal colic or back pain.
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Affiliation(s)
- Ava L Liberman
- Clinical and Translational Neuroscience Unit, Department of Neurology, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York, USA
| | - Cenai Zhang
- Clinical and Translational Neuroscience Unit, Department of Neurology, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York, USA
| | - Richard B Lipton
- Department of Neurology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Hooman Kamel
- Clinical and Translational Neuroscience Unit, Department of Neurology, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York, USA
| | - Neal S Parikh
- Clinical and Translational Neuroscience Unit, Department of Neurology, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York, USA
| | - Babak B Navi
- Clinical and Translational Neuroscience Unit, Department of Neurology, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York, USA
| | - Alan Z Segal
- Clinical and Translational Neuroscience Unit, Department of Neurology, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York, USA
| | - Junaid Razzak
- Department of Emergency Medicine, Weill Cornell Medicine, New York, New York, USA
| | - David E Newman-Toker
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Epidemiology and Health Policy & Management, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA.,Department of Otolaryngology and Emergency Medicine, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Alexander E Merkler
- Clinical and Translational Neuroscience Unit, Department of Neurology, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York, USA
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Caution Ahead. Adv Emerg Nurs J 2022; 44:281-284. [DOI: 10.1097/tme.0000000000000430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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40
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Viola P, Gioacchini FM, Astorina A, Pisani D, Scarpa A, Marcianò G, Casarella A, Basile E, Rania V, Re M, Chiarella G. The pharmacological treatment of acute vestibular syndrome. Front Neurol 2022; 13:999112. [PMID: 36158968 PMCID: PMC9500199 DOI: 10.3389/fneur.2022.999112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 08/17/2022] [Indexed: 11/21/2022] Open
Abstract
Acute vestibular syndrome (AVS) represents a clinical picture that involves urgent management due to the important procession of symptoms accompanying the event, which can be positively or negatively influenced by therapeutic choices and intervention timing. This forces a differential diagnosis and therapeutic choices to be made in conditions that are not always favorable and often not in the specialist field. In this work, we will examine in detail the pharmacological therapeutic possibilities, correlating them to the differential and, as far as possible, to the etiological diagnosis. In particular, the pharmacological possibilities for the two main conditions we can face will be investigated, namely, vestibular neuritis and posterior circulation stroke.
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Affiliation(s)
- Pasquale Viola
- Unit of Audiology, Department of Experimental and Clinical Medicine, Regional Centre of Cochlear Implants and ENT Diseases, Magna Graecia University, Catanzaro, Italy
| | - Federico Maria Gioacchini
- ENT Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Alessia Astorina
- Unit of Audiology, Department of Experimental and Clinical Medicine, Regional Centre of Cochlear Implants and ENT Diseases, Magna Graecia University, Catanzaro, Italy
| | - Davide Pisani
- Unit of Audiology, Department of Experimental and Clinical Medicine, Regional Centre of Cochlear Implants and ENT Diseases, Magna Graecia University, Catanzaro, Italy
| | - Alfonso Scarpa
- Department of Medicine and Surgery, University of Salerno, Salerno, Italy
- *Correspondence: Alfonso Scarpa
| | - Gianmarco Marcianò
- Department of Health Science, School of Medicine, University “Magna Graecia” of Catanzaro, Catanzaro, Italy
| | - Alessandro Casarella
- Department of Health Science, School of Medicine, University “Magna Graecia” of Catanzaro, Catanzaro, Italy
| | - Emanuele Basile
- Department of Health Science, School of Medicine, University “Magna Graecia” of Catanzaro, Catanzaro, Italy
| | - Vincenzo Rania
- Department of Health Science, School of Medicine, University “Magna Graecia” of Catanzaro, Catanzaro, Italy
| | - Massimo Re
- ENT Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Giuseppe Chiarella
- Unit of Audiology, Department of Experimental and Clinical Medicine, Regional Centre of Cochlear Implants and ENT Diseases, Magna Graecia University, Catanzaro, Italy
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Choi JY, Kim S, Boo D, Yoo S, Kim HJ, Kim JY, Lee KJ, Kang J, Kim BJ, Han MK, Bae HJ, Kim JS. Risk of Future Stroke in Patients with a Diagnosis of Peripheral Vertigo in the Emergency Department. Eur J Neurol 2022. [PMID: 36056876 DOI: 10.1111/ene.15543] [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: 05/21/2022] [Revised: 08/05/2022] [Accepted: 08/29/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND We evaluated the temporal characteristics of stroke risks in the emergency department patients who had a diagnosis of peripheral vertigo. We also attempted to reveal the stroke risk factor among those with peripheral vertigo. METHODS This is a parallel group cohort study in a tertiary referral hospital. After assigning each of matched 4367 patients to the comparative set of peripheral vertigo and appendicitis-ureterolithiasis groups and each of matched 4911 to the comparative set of peripheral vertigo and ischemic stroke groups, we evaluated the relative stroke risk. In addition, to predict the individual stroke risk in patients with peripheral vertigo, any association between the demographic factors and stroke events was evaluated in the peripheral vertigo group. RESULTS The peripheral vertigo group had a higher stroke risk than the appendicitis-ureterolithiasis group (HR=1.73, 95% CI=1.18-2.55) but a lower risk than the ischemic stroke group (HR=0.30, 95% CI=0.24-0.37). The stroke risk of the peripheral vertigo group was just below that of small vessel stroke. The stroke risk of the peripheral vertigo group differed markedly by time: higher within seven days, moderate between seven days and one year, and diminished thereafter. Old age (>65), male gender, and diabetes mellitus were the risk factors for stroke in the peripheral vertigo group. CONCLUSION Patients with a diagnosis of peripheral vertigo in the ED showed a moderate future stroke risk so that requires a stroke preventive strategy tailored to the timing of symptom onset and individual risk.
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Affiliation(s)
- Jeong-Yoon Choi
- Department of Neurology, Seoul National University Bundang Hospital, Seongnam, South Korea.,Department of Neurology, Seoul National University College of Medicine, Seoul, South Korea
| | - Seok Kim
- Office of eHealth Research and Business, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Dachung Boo
- Office of eHealth Research and Business, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Sooyoung Yoo
- Office of eHealth Research and Business, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Hyo-Jung Kim
- Research Administration Team, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Jun Yup Kim
- Department of Neurology, Seoul National University Bundang Hospital, Seongnam, South Korea.,Department of Neurology, Seoul National University College of Medicine, Seoul, South Korea
| | - Keon-Joo Lee
- Department of Neurology, Seoul National University Bundang Hospital, Seongnam, South Korea.,Department of Neurology, Seoul National University College of Medicine, Seoul, South Korea
| | - Jihoon Kang
- Department of Neurology, Seoul National University Bundang Hospital, Seongnam, South Korea.,Department of Neurology, Seoul National University College of Medicine, Seoul, South Korea
| | - Beom Joon Kim
- Department of Neurology, Seoul National University Bundang Hospital, Seongnam, South Korea.,Department of Neurology, Seoul National University College of Medicine, Seoul, South Korea
| | - Moon-Ku Han
- Department of Neurology, Seoul National University Bundang Hospital, Seongnam, South Korea.,Department of Neurology, Seoul National University College of Medicine, Seoul, South Korea
| | - Hee-Joon Bae
- Department of Neurology, Seoul National University Bundang Hospital, Seongnam, South Korea.,Department of Neurology, Seoul National University College of Medicine, Seoul, South Korea
| | - Ji-Soo Kim
- Department of Neurology, Seoul National University Bundang Hospital, Seongnam, South Korea.,Department of Neurology, Seoul National University College of Medicine, Seoul, South Korea
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Wang X, Carcel C, Hsu B, Shajahan S, Miller M, Peters S, Randall DA, Havard A, Redfern J, Anderson CS, Jorm L, Woodward M. Differences in the pre-hospital management of women and men with stroke by emergency medical services in New South Wales. Med J Aust 2022; 217:143-148. [PMID: 35831059 PMCID: PMC9541458 DOI: 10.5694/mja2.51652] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 03/29/2022] [Accepted: 05/10/2022] [Indexed: 12/03/2022]
Abstract
OBJECTIVES To examine whether pre-hospital emergency medical service care differs for women and men subsequently admitted to hospital with stroke. DESIGN, SETTING, PARTICIPANTS Population-based cohort study; analysis of linked Admitted Patient Data Collection and NSW Ambulance data for people admitted to New South Wales hospitals with a principal diagnosis of stroke at separation, 1 July 2005 - 31 December 2018. MAIN OUTCOME MEASURES Emergency medical service assessments, protocols, and management for patients subsequently diagnosed with stroke, by sex. RESULTS Of 202 231 people hospitalised with stroke (mean age, 73 [SD, 14] years; 98 599 women [51.0%]), 101 357 were conveyed to hospital by ambulance (50.1%). A larger proportion of women than men travelled by ambulance (52.4% v 47.9%; odds ratio [OR], 1.09; 95% CI, 1.07-1.11), but time between the emergency call and emergency department admission was similar for both sexes. The likelihood of being assessed as having a stroke (adjusted OR [aOR], 0.97; 95% CI, 0.93-1.01) or subarachnoid haemorrhage (aOR, 1.22; 95% CI, 0.73-2.03) was similar for women and men, but women under 70 years of age were less likely than men to be assessed as having a stroke (aOR, 0.89; 95% CI, 0.82-0.97). Women were more likely than men to be assessed by paramedics as having migraine, other headache, anxiety, unconsciousness, hypertension, or nausea. Women were less likely than men to be managed according to the NSW Ambulance pre-hospital stroke care protocol (aOR, 0.95; 95% CI, 0.92-0.97), but the likelihood of basic pre-hospital care was similar for both sexes (aOR, 1.01; 95% CI, 0.99-1.04). CONCLUSION Our large population-based study identified sex differences in pre-hospital management by emergency medical services of women and men admitted to hospital with stroke. Paramedics should receive training that improves the recognition of stroke symptoms in women.
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Affiliation(s)
- Xia Wang
- The George Institute for Global HealthUniversity of New South WalesSydneyNSW
| | - Cheryl Carcel
- The George Institute for Global HealthUniversity of New South WalesSydneyNSW
| | - Benjumin Hsu
- Centre for Big Data Research in HealthUniversity of New South WalesSydneyNSW
| | - Sultana Shajahan
- The George Institute for Global HealthUniversity of New South WalesSydneyNSW
| | - Matthew Miller
- Centre for Big Data Research in HealthUniversity of New South WalesSydneyNSW
| | - Sanne Peters
- The George Institute for Global HealthOxfordUnited Kingdom
| | - Deborah A Randall
- Centre for Big Data Research in HealthUniversity of New South WalesSydneyNSW
| | - Alys Havard
- Centre for Big Data Research in HealthUniversity of New South WalesSydneyNSW
| | - Julie Redfern
- The George Institute for Global HealthUniversity of New South WalesSydneyNSW,School of Health Sciences, Faculty of Medicine and HealthUniversity of Sydney, NSW
| | - Craig S Anderson
- The George Institute for Global HealthUniversity of New South WalesSydneyNSW,Royal Prince Alfred HospitalSydneyNSW
| | - Louisa Jorm
- Centre for Big Data Research in HealthUniversity of New South WalesSydneyNSW
| | - Mark Woodward
- The George Institute for Global HealthUniversity of New South WalesSydneyNSW
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Edlow JA, Agrawal Y, Newman-Toker DE. Correct Diagnosis for the Proper Treatment of Acute Vertigo-Putting the Diagnostic Horse Before the Therapeutic Cart. JAMA Neurol 2022; 79:841-843. [PMID: 35849406 DOI: 10.1001/jamaneurol.2022.1493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Jonathan A Edlow
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts.,Department of Medicine, Harvard Medical School, Boston, Massachusetts.,Department of Emergency Medicine, Harvard Medical School, Boston, Massachusetts
| | - Yuri Agrawal
- Otolaryngology-Head and Neck Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - David E Newman-Toker
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland.,Department of Otolaryngology, The Johns Hopkins University School of Medicine, Baltimore, Maryland.,Armstrong Institute Center for Diagnostic Excellence, The Johns Hopkins University School of Medicine, Baltimore, Maryland
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44
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Edlow JA. Acute dizziness - a personal journey through a paradigm shift. Acad Emerg Med 2022; 30:598-602. [PMID: 35834498 DOI: 10.1111/acem.14559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 06/20/2022] [Accepted: 07/08/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Jonathan A Edlow
- Department of Emergency Medicine,, Beth Israel Deaconess Medical Center.,Professor of Emergency Medicine, Harvard Medical School, Boston, MA
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45
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Wang J, Zhu S, Xu P, Huang X, Liu C, Liu D, Xiao L, Gu M, Cai Q, Tao C, Li S, Wang Q, Lan W, Sun W, Liu X. Initial symptoms of vertebrobasilar artery occlusions and the outcomes after endovascular treatment. J Neurol 2022; 269:5561-5570. [PMID: 35732957 DOI: 10.1007/s00415-022-11218-4] [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: 04/19/2022] [Revised: 06/01/2022] [Accepted: 06/04/2022] [Indexed: 10/17/2022]
Abstract
BACKGROUND Acute vertebrobasilar artery occlusion (VBAO) is a devastating disease in stroke patients. This study was aimed to identify the initial symptoms of patients with acute VBAO receiving endovascular treatment and determine its associations with clinical outcomes. METHODS Patients with VBAO receiving endovascular treatment at 21 stroke centres in China were recruited for this derivation cohort A data-driven approach of latent class analysis was applied to identify distinct symptom typologies of VBAO patients. Multivariable binary and ordinary logistic regressions were used to evaluate the associations between symptom subtypes and clinical outcomes. RESULTS A total of 548 patients were analysed in this study. Four distinct subgroups were defined: the vestibular symptom group (32.8%), anterior circulation mimic group (26.5%), non-specific symptom group (14.8%) and severe VBAO symptom group (25.9%). Compared with severe VBAO symptoms, non-specific symptoms were independently associated with higher rates of favourable outcome and functional independence at the 3 months [odds ratio (OR) 2.46, 95% confidence interval (CI) 1.15-5.28; OR 3.46, 95% CI 1.54-7.79]and 1 year follow-up (OR 2.25, 95% CI 1.05-4.82; OR 2.69, 95% CI 1.22-5.92), and better functional improvement (shift in mRS score) at the 3 months (OR 2.05, 95% CI 1.15-3.67). CONCLUSION We identified four distinctive subtypes based on the initial symptoms of VBAO patients. Severe VBAO symptoms were associated with poor outcomes while non-specific and vestibular symptoms were indicators of a favourable outcome.
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Affiliation(s)
- Jinjing Wang
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Shuanggen Zhu
- Department of Neurology, The Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, Shenzhen, Guangdong, China.,Department of Neurology, Affliated to Longhua People's Hospital, Southern Medical University, Shenzhen, Guangdong, China
| | - Pengfei Xu
- Stroke Center & Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, Anhui, China
| | - Xianjun Huang
- Department of Neurology, Yijishan Hospital, Wannan Medical College, Wuhu, Anhui, China
| | - Chaolai Liu
- Department of Neurology, The First People's Hospital of Jining, Jining, Shandong, China
| | - Dezhi Liu
- Department of Neurology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lulu Xiao
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Mengmeng Gu
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Qiankun Cai
- Department of Neurology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian, China
| | - Chunrong Tao
- Stroke Center & Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, Anhui, China
| | - Shizhan Li
- Department of Neurology, The First People's Hospital of Yulin, Yulin, Guangxi, China
| | - Qizhang Wang
- Department of Neurology, Shenzhen Shajing People's Hospital, Shenzhen, Guangdong, China
| | - Wenya Lan
- Department of Cerebrovascular Disease Treatment Center, Nanjing Brain Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, China
| | - Wen Sun
- Stroke Center & Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, Anhui, China.
| | - Xinfeng Liu
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China. .,Stroke Center & Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, Anhui, China.
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46
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Filippopulos FM, Strobl R, Belanovic B, Dunker K, Grill E, Brandt T, Zwergal A, Huppert D. Validation of a comprehensive diagnostic algorithm for patients with acute vertigo and dizziness. Eur J Neurol 2022; 29:3092-3101. [PMID: 35708513 DOI: 10.1111/ene.15448] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/24/2022] [Accepted: 06/09/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Vertigo and dizziness are common complaints in emergency departments and primary care, which pose major diagnostic challenges due to various underlying etiologies. Most supportive diagnostic algorithms concentrate on either identifying cerebrovascular events or diagnosing specific vestibular disorders or are restricted to specific patient subgroups. METHODS The study was conducted in the scope of the 'PoiSe' project (prevention, online feedback, and interdisciplinary therapy of acute vestibular syndromes by e-health). A three-level algorithm was developed according to international guidelines and scientific evidence addressing both, the detection of cerebrovascular events and the classification to non-vascular vestibular disorders (unilateral vestibulopathy, benign paroxysmal positional vertigo, vestibular paroxysmia, Menière's disease, vestibular migraine, functional dizziness). The algorithm was validated on a prospectively collected dataset of 407 patients with acute vertigo and dizziness presenting to the emergency department at LMU Munich. RESULTS The algorithm assigned 287 of 407 patients to the correct diagnosis, corresponding to an overall accuracy of 71%. Cerebrovascular events were identified with high sensitivity of 94%. The six most common vestibular disorders were classified with high specificity above 95%. Random forest identified the presence of a paresis, sensory loss, central ocular motor and vestibular signs (HINTS), and older age as the most important variables indicating a cerebrovascular event. CONCLUSIONS The proposed diagnostic algorithm can correctly classify the most common vestibular disorders based on a comprehensive set of key questions and clinical examinations. It is easily applied, not limited to subgroups, and might therefore be transferred to broad clinical settings such as primary health care.
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Affiliation(s)
- Filipp M Filippopulos
- German Center for Vertigo and Balance Disorders, University Hospital, LMU Munich, Marchioninistr. 15, Munich, Germany.,Department of Neurology, University Hospital, LMU Munich, Marchioninistr. 15, Munich, Germany
| | - Ralf Strobl
- German Center for Vertigo and Balance Disorders, University Hospital, LMU Munich, Marchioninistr. 15, Munich, Germany.,Institute for Medical Information Processing, Biometrics and Epidemiology, Ludwig-Maximilians-Universität München (LMU), Marchioninistr. 15, Munich, Germany
| | - Bozidar Belanovic
- German Center for Vertigo and Balance Disorders, University Hospital, LMU Munich, Marchioninistr. 15, Munich, Germany
| | - Konstanze Dunker
- German Center for Vertigo and Balance Disorders, University Hospital, LMU Munich, Marchioninistr. 15, Munich, Germany
| | - Eva Grill
- German Center for Vertigo and Balance Disorders, University Hospital, LMU Munich, Marchioninistr. 15, Munich, Germany.,Institute for Medical Information Processing, Biometrics and Epidemiology, Ludwig-Maximilians-Universität München (LMU), Marchioninistr. 15, Munich, Germany
| | - Thomas Brandt
- German Center for Vertigo and Balance Disorders, University Hospital, LMU Munich, Marchioninistr. 15, Munich, Germany
| | - Andreas Zwergal
- German Center for Vertigo and Balance Disorders, University Hospital, LMU Munich, Marchioninistr. 15, Munich, Germany.,Department of Neurology, University Hospital, LMU Munich, Marchioninistr. 15, Munich, Germany
| | - Doreen Huppert
- German Center for Vertigo and Balance Disorders, University Hospital, LMU Munich, Marchioninistr. 15, Munich, Germany.,Department of Neurology, University Hospital, LMU Munich, Marchioninistr. 15, Munich, Germany
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O’Connell GC, Walsh KB, Smothers CG, Ruksakulpiwat S, Armentrout BL, Winkelman C, Milling TJ, Warach SJ, Barr TL. Use of deep artificial neural networks to identify stroke during triage via subtle changes in circulating cell counts. BMC Neurol 2022; 22:206. [PMID: 35659609 PMCID: PMC9164330 DOI: 10.1186/s12883-022-02726-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 05/17/2022] [Indexed: 11/10/2022] Open
Abstract
Background The development of tools that could help emergency department clinicians recognize stroke during triage could reduce treatment delays and improve patient outcomes. Growing evidence suggests that stroke is associated with several changes in circulating cell counts. The aim of this study was to determine whether machine-learning can be used to identify stroke in the emergency department using data available from a routine complete blood count with differential. Methods Red blood cell, platelet, neutrophil, lymphocyte, monocyte, eosinophil, and basophil counts were assessed in admission blood samples collected from 160 stroke patients and 116 stroke mimics recruited from three geographically distinct clinical sites, and an ensemble artificial neural network model was developed and tested for its ability to discriminate between groups. Results Several modest but statistically significant differences were observed in cell counts between stroke patients and stroke mimics. The counts of no single cell population alone were adequate to discriminate between groups with high levels of accuracy; however, combined classification using the neural network model resulted in a dramatic and statistically significant improvement in diagnostic performance according to receiver-operating characteristic analysis. Furthermore, the neural network model displayed superior performance as a triage decision making tool compared to symptom-based tools such as the Cincinnati Prehospital Stroke Scale (CPSS) and the National Institutes of Health Stroke Scale (NIHSS) when assessed using decision curve analysis. Conclusions Our results suggest that algorithmic analysis of commonly collected hematology data using machine-learning could potentially be used to help emergency department clinicians make better-informed triage decisions in situations where advanced imaging techniques or neurological expertise are not immediately available, or even to electronically flag patients in which stroke should be considered as a diagnosis as part of an automated stroke alert system.
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48
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Kim M, Park SY, Lee SE, Lee JS, Hong JM, Lee SJ. Significance of Vertigo, Imbalance, and Other Minor Symptoms in Hyperacute Treatment of Posterior Circulation Stroke. Front Neurol 2022; 13:845707. [PMID: 35651338 PMCID: PMC9150563 DOI: 10.3389/fneur.2022.845707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 04/25/2022] [Indexed: 12/01/2022] Open
Abstract
Background This study aimed to determine the clinical significance of acute vestibular syndrome (AVS)/acute imbalance syndrome (AIS) in posterior circulation stroke (PCS) and how it should be addressed in the thrombolysis code. Methods Our institution has recently changed its thrombolysis code from one that is generous to AVS/AIS to one that is exclusive. The subjects in this study were patients with PCS who presented before this transition (May 2016 to April 2018, period 1) and those who presented after (January 2019 to December 2020, period 2) with an onset-to-door time of 4.5 h. Hyperacute stroke treatment was compared between the two periods. The clinical significance of AVS/AIS was evaluated by dichotomizing the patients' clinical severity to minor or major deficits, then evaluating the significance of AVS/AIS in each group. Presenting symptoms of decreased mental alertness, hemiparesis, aphasia (anarthria), or hemianopsia were considered major PCS symptoms, and patients who did not present with these symptoms were considered minor PCS. Results In total, 114 patients presented in period 1 and 114 in period 2. Although the code activation rate was significantly lower in period 2 (72.8% vs. 59.7%), p = 0.04, there were no between-group differences in functional outcomes (mRS score at 3 months; 1 [0–3] vs. 0 [0–3], p = 0.18). In 77 patients with PCS and AVS/AIS, the difference in code activation rate was not significant according to changes in thrombolysis code. In minor PCS, AVS/AIS was associated with lower NIHSS scores, lower early neurological deterioration rates, and favorable outcomes. In major PCS, while AVS/AIS was not associated with outcomes, the majority of cases were prodromal AVS/AIS which simple vertigo and imbalance symptoms were followed by a major PCS symptom. Conclusions This study failed to show differences in outcome in patients with PCS according to how AVS/AIS is addressed in the stroke thrombolysis code. In patients with minor PCS, AVS/AIS was associated with a benign clinical course. Prompt identification of prodromal AVS/AIS is essential.
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Affiliation(s)
- Min Kim
- Department of Neurology, Ajou University Medical Center, Ajou University School of Medicine, Suwon, South Korea
| | - So Young Park
- Department of Neurology, Ajou University Medical Center, Ajou University School of Medicine, Suwon, South Korea
| | - Sung Eun Lee
- Department of Emergency Medicine, Ajou University Medical Center, Ajou University School of Medicine, Suwon, South Korea
| | - Jin Soo Lee
- Department of Neurology, Ajou University Medical Center, Ajou University School of Medicine, Suwon, South Korea
| | - Ji Man Hong
- Department of Neurology, Ajou University Medical Center, Ajou University School of Medicine, Suwon, South Korea
| | - Seong-Joon Lee
- Department of Neurology, Ajou University Medical Center, Ajou University School of Medicine, Suwon, South Korea
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49
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Jiang H, Ren K, Li T, Qian C, Gong S, Wang T, Zhu L. Correlation of the characteristics of symptomatic intracranial atherosclerotic plaques with stroke types and risk of stroke recurrence: a cohort study. ANNALS OF TRANSLATIONAL MEDICINE 2022; 10:658. [PMID: 35845483 PMCID: PMC9279796 DOI: 10.21037/atm-22-2586] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 06/14/2022] [Indexed: 11/25/2022]
Abstract
Background Symptomatic intracranial atherosclerotic stenosis (sICAS) patients had a higher risk of stroke recurrence, and the risk of acute ischemic stroke (AIS) was higher than transient ischemic attack (TIA). Therefore, it is important to explore the risk factors associated with sICAS clinical subtypes and the risk of stroke recurrence. The purpose of this study was to investigate the association between intracranial arterial culprit plaque characteristics with sICAS clinical subtypes and the risk of stroke recurrence. Methods A total of 206 patients with sICAS were included. Baseline demographic data and relevant serologic indices were collected from all participants. All participants were assessed by high-resolution vessel wall imaging (HR-VWI) for culprit vessel and culprit plaque characteristics. The follow-up method was outpatient or telephone follow-up. Associated factors for sICAS clinical subtypes were analyzed by binary logistic regression. Cox proportional hazard regression analysis were used to analysis the independent risk factors for recurrent stroke. Results In this group, there were 154 patients with AIS, 52 patients with TIA, 124 patients with anterior circulation ischemic symptom (ACiS), and 82 patients with posterior circulation ischemic symptom (PCiS). Male gender [odds ratio (OR) =5.575, 95% confidence interval (CI): 2.120 to 14.658], history of previous statin use (OR =0.309, 95% CI: 0.113 to 0.843) and serum apolipoprotein A/B values (OR =0.363, 95% CI: 0.139 to 0.948) were associated factors for AIS. A total of 24 patients (11.7%) experienced stroke recurrence during the 1-year follow-up period. Hyperintensity on T1 weighted imaging (T1WI) in the culprit plaque [hazard ratio (HR) =3.798, 95% CI: 1.433 to 10.062] was an independent risk factor for stroke recurrence. The incidence of significant enhancement (62.2% vs. 39.5%, χ2=9.681, P=0.002), positive remodeling (69.5% vs. 52.4%, χ2=5.661, P=0.020), and hyperintensity on T1WI (42.7% vs. 22.6%, χ2=16.472, P=0.003) was higher in the posterior circulation than in the anterior circulation. Conclusions The characteristics of intracranial arterial culprit plaques were independent risk factors for recurrent stroke, and there were differences in the plaque characteristics of anterior and posterior circulation. Early HR-VWI examination for sICAS patients is of great significance for patient risk stratification and personalized management.
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Affiliation(s)
- Huayun Jiang
- Department of Radiology, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Kaixuan Ren
- Department of Radiology, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Tiantian Li
- Department of Radiology, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Chengqun Qian
- Department of Radiology, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Shenchu Gong
- Department of Radiology, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Tianle Wang
- Department of Radiology, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Li Zhu
- Department of Radiology, The Second Affiliated Hospital of Nantong University, Nantong, China
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50
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Magnusson C, Hagiwara MA, Norberg-Boysen G, Kauppi W, Herlitz J, Axelsson C, Packendorff N, Larsson G, Wibring K. Suboptimal prehospital decision- making for referral to alternative levels of care - frequency, measurement, acceptance rate and room for improvement. BMC Emerg Med 2022; 22:89. [PMID: 35606694 PMCID: PMC9125920 DOI: 10.1186/s12873-022-00643-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 05/05/2022] [Indexed: 11/15/2022] Open
Abstract
Background The emergency medical services (EMS) have undergone dramatic changes during the past few decades. Increased utilisation, changes in care-seeking behaviour and competence among EMS clinicians have given rise to a shift in EMS strategies in many countries. From transport to the emergency department to at the scene deciding on the most appropriate level of care and mode of transport. Among the non-conveyed patients some may suffer from “time-sensitive conditions” delaying diagnosis and treatment. Thus, four questions arise:How often are time-sensitive cases referred to primary care or self-care advice? How can we measure and define the level of inappropriate clinical decision-making? What is acceptable? How to increase patient safety?
Main text To what extent time-sensitive cases are non-conveyed varies. About 5–25% of referred patients visit the emergency department within 72 hours, 5% are hospitalised, 1–3% are reported to have a time-sensitive condition and seven-day mortality rates range from 0.3 to 6%. The level of inappropriate clinical decision-making can be measured using surrogate measures such as emergency department attendances, hospitalisation and short-term mortality. These measures do not reveal time-sensitive conditions. Defining a scoring system may be one alternative, where misclassifications of time-sensitive cases are rated based on how severely they affected patient outcome. In terms of what is acceptable there is no general agreement. Although a zero-vision approach does not seem to be realistic unless under-triage is split into different levels of severity with zero-vision in the most severe categories. There are several ways to reduce the risk of misclassifications. Implementation of support systems for decision-making using machine learning to improve the initial assessment is one approach. Using a trigger tool to identify adverse events is another. Conclusion A substantial number of patients are non-conveyed, including a small portion with time-sensitive conditions. This poses a threat to patient safety. No general agreement on how to define and measure the extent of such EMS referrals and no agreement of what is acceptable exists, but we conclude an overall zero-vision is not realistic. Developing specific tools supporting decision making regarding EMS referral may be one way to reduce misclassification rates.
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Affiliation(s)
- Carl Magnusson
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-405 30, Gothenburg, Sweden. .,Department of Prehospital Emergency Care , Sahlgrenska University Hospital, SE-411 04, Gothenburg, Sweden.
| | - Magnus Andersson Hagiwara
- Prehospen-Centre for Prehospital Research, Faculty of Caring Science, Work Life and Social Welfare, University of Borås, SE-501 90, Borås, Sweden
| | - Gabriella Norberg-Boysen
- Prehospen-Centre for Prehospital Research, Faculty of Caring Science, Work Life and Social Welfare, University of Borås, SE-501 90, Borås, Sweden
| | - Wivica Kauppi
- Prehospen-Centre for Prehospital Research, Faculty of Caring Science, Work Life and Social Welfare, University of Borås, SE-501 90, Borås, Sweden
| | - Johan Herlitz
- Prehospen-Centre for Prehospital Research, Faculty of Caring Science, Work Life and Social Welfare, University of Borås, SE-501 90, Borås, Sweden
| | - Christer Axelsson
- Department of Prehospital Emergency Care , Sahlgrenska University Hospital, SE-411 04, Gothenburg, Sweden.,Prehospen-Centre for Prehospital Research, Faculty of Caring Science, Work Life and Social Welfare, University of Borås, SE-501 90, Borås, Sweden
| | - Niclas Packendorff
- Prehospen-Centre for Prehospital Research, Faculty of Caring Science, Work Life and Social Welfare, University of Borås, SE-501 90, Borås, Sweden
| | - Glenn Larsson
- Prehospen-Centre for Prehospital Research, Faculty of Caring Science, Work Life and Social Welfare, University of Borås, SE-501 90, Borås, Sweden
| | - Kristoffer Wibring
- Department of Ambulance and Prehospital Care, Region Halland, SE-302 49, Halmstad, Sweden
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