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Lima Neto AC, Bittar RSM. Vascular vertigo and dizziness: managing and treating outpatients. Braz J Otorhinolaryngol 2024; 90:101453. [PMID: 38991403 PMCID: PMC11295563 DOI: 10.1016/j.bjorl.2024.101453] [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: 08/15/2023] [Revised: 02/14/2024] [Accepted: 05/23/2024] [Indexed: 07/13/2024] Open
Abstract
OBJECTIVE Due the lack of data on the treatment of Vascular Vertigo and Dizziness, this study aimed to report how we managed and treated those outpatients according to the recently introduced American Heart Association and Stroke Association guidelines. METHODS We conducted a longitudinal case series from May 2022 to February 2023. We included patients who met the Bárány Society's Vascular Vertigo and Dizziness classification and were eligible for therapy in accordance with the American Heart Association and Stroke Association guidelines, featuring aspects of the stroke group and transient attack group. RESULTS Overall, 41 patients (51.2% female; median age 72 years) were enrolled; 10 (24.3%) had ischemic strokes, 30 (73.1%) had transient ischemic attack, and 1 (2.4%) had a probable isolated labyrinthine infarction. The patients received dual antiplatelet (48.7%), single antiplatelet therapy (48.7%), and anticoagulant therapy (2.4%). No new crises occurred in 95.2% of the patients, and the transient ischemic attack group showed a significant decrease in discomfort from imbalance on the visual analog scale. CONCLUSIONS Antiplatelets and anticoagulants are safe and effective in treating Vascular Vertigo and Dizziness as they prevent new ischemic events and increase the flow of the posterior circulation, reducing vertigo/dizziness attacks and imbalance complaints. LEVEL OF EVIDENCE: 4
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Affiliation(s)
- Arlindo Cardoso Lima Neto
- Setor de Otoneurologia do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo - FMUSP, Brazil.
| | - Roseli Saraiva Moreira Bittar
- Setor de Otoneurologia do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo - FMUSP, Brazil
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Kim SH, Kim H, Lee SU, Park E, Cho BH, Cho KH, Kim GJ, Yu S, Kim JS. Bilaterally positive head-impulse tests can differentiate AICA infarction from labyrinthitis. Front Neurol 2024; 15:1448989. [PMID: 39268064 PMCID: PMC11390645 DOI: 10.3389/fneur.2024.1448989] [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: 06/14/2024] [Accepted: 08/13/2024] [Indexed: 09/15/2024] Open
Abstract
Introduction Video head-impulse tests (video-HITs) often fail to detect anterior inferior cerebellar artery (AICA) infarction due to peripheral and central vestibular system involvement. Anecdotal studies suggest that video-HITs may reveal bilateral impairment in AICA infarction. However, the diagnostic utility of video-HITs has not been established, particularly when compared to labyrinthitis, which accounts for the majority of acute audiovestibular syndrome (AAVS) cases. Methods We reviewed the medical records of consecutive patients presenting with new-onset acute hearing loss and spontaneous vertigo (i.e., AAVS) between March 2018 and July 2023 at a tertiary hospital in South Korea. Video-HIT patterns were categorized as follows: (1) ipsilaterally positive, (2) contralaterally positive, (3) bilaterally normal, and (4) bilaterally positive. Results Twenty-eight patients with AICA infarction (mean age ± standard deviation = 67 ± 15 years; 14 men) and 51 with labyrinthitis (63 ± 17 years, 26 men) were included in the analyses. Among the 28 patients with AICA infarction, 15 presented with AAVS in isolation, without other co-morbid neurologic deficits (15/28, 54%). The vestibulo-ocular reflex (VOR) gains of ipsilesional horizontal canals (HCs) ranged from 0.21 to 1.22 (median = 0.81, interquartile range [IQR] = 0.50-0.89). However, those for contralateral HC gain ranged from 0.57 to 1.19 (median = 0.89 [IQR = 0.73-0.97]). Collectively, HITs were bilaterally positive in 13 patients (including 12 patients with bilaterally positive HITs for the horizontal canal), normal in eight, ipsilesionally positive in six, and contralesionally positive in one patient with AICA infarction. The VOR gains were typically decreased ipsilaterally in 28 (28/51, 55%), normal in 17 (17/51, 33%), and decreased bilaterally in six patients with labyrinthitis (6/51, 12%). Logistic regression analysis revealed that bilaterally positive HITs (p = 0.004) and multiple vascular risk factors (p = 0.043) were more frequently associated with AICA infarction than labyrinthitis. Discussion Among patients presenting with AAVS, bilaterally positive HITs can be indicative of AICA infarction in patients with multiple vascular risk factors.
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Affiliation(s)
- Sung-Hwan Kim
- Department of Neurology, Korea University Medical Center, Seoul, Republic of Korea
| | - Hanseob Kim
- Department of Computer Science and Engineering, Korea University, Seoul, Republic of Korea
| | - Sun-Uk Lee
- Department of Neurology, Korea University Medical Center, Seoul, Republic of Korea
- Neurotology and Neuro-ophthalmology Laboratory, Korea University Medical Center, Seoul, Republic of Korea
| | - Euyhyun Park
- Neurotology and Neuro-ophthalmology Laboratory, Korea University Medical Center, Seoul, Republic of Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea
| | - Bang-Hoon Cho
- Department of Neurology, Korea University Medical Center, Seoul, Republic of Korea
| | - Kyung-Hee Cho
- Department of Neurology, Korea University Medical Center, Seoul, Republic of Korea
| | - Gerard J Kim
- Department of Computer Science and Engineering, Korea University, Seoul, Republic of Korea
| | - Sungwook Yu
- Department of Neurology, Korea University Medical Center, Seoul, Republic of Korea
| | - Ji-Soo Kim
- Dizziness Center, Clinical Neuroscience Center, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
- Department of Neurology, Seoul National University College of Medicine, Seoul, Republic of Korea
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Ohle R, Savage DW, Roy D, McIsaac S, Singh R, Lelli D, Tse D, Johns P, Yadav K, Perry JJ. Development of a Clinical Risk Score to Risk Stratify for a Serious Cause of Vertigo in Patients Presenting to the Emergency Department. Ann Emerg Med 2024:S0196-0644(24)00326-3. [PMID: 39093245 DOI: 10.1016/j.annemergmed.2024.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 05/14/2024] [Accepted: 06/03/2024] [Indexed: 08/04/2024]
Abstract
STUDY OBJECTIVE Identify high-risk clinical characteristics for a serious cause of vertigo in patients presenting to the emergency department (ED). METHODS Multicentre prospective cohort study over 3 years at three university-affiliated tertiary care EDs. Participants were patients presenting with vertigo, dizziness or imbalance. Main outcome measurement was an adjudicated serious diagnosis defined as stroke, transient ischemic attack, vertebral artery dissection or brain tumour. RESULTS A total of 2,078 of 2,618 potentially eligible patients (79.4%) were enrolled (mean age 77.1 years; 59% women). Serious events occurred in 111 (5.3%) patients. We used logistic regression to create a 7-item prediction model: male, age over 65, hypertension, diabetes, motor/sensory deficits, cerebellar signs/symptoms and benign paroxysmal positional vertigo diagnosis (C-statistic 0.96, 95% confidence interval [CI] 0.92 to 0.98). The risk of a serious diagnosis ranged from 0% for a score of <5, 2.1% for a score of 5 to 8, and 41% for a score >8. Sensitivity for a serious diagnosis was 100% (95% CI, 97.1% to 100%) and specificity 72.1% (95% CI, 70.1% to 74%) for a score <5. CONCLUSION The Sudbury Vertigo Risk Score identifies the risk of a serious diagnosis as a cause of a patient's vertigo and if validated could assist physicians in guiding further investigation, consultation, and treatment decisions, improving resource utilization and reducing missed diagnoses.
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Affiliation(s)
- Robert Ohle
- Department of Emergency Medicine, Health Sciences North, Health Sciences North Research Institute, Northern Ontario School of Medicine, Sudbury, ON, Canada.
| | - David W Savage
- Department of Emergency Medicine, Northern Ontario School of Medicine, Thunder Bay, ON, Canada
| | - Danielle Roy
- School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Sarah McIsaac
- Department of Critical Care, Department of Anesthesia, Northern Ontario School of Medicine, Sudbury, ON, Canada
| | - Ravinder Singh
- Department of Neurology, Health Sciences North, Health Sciences North Research Institute, Northern Ontario School of Medicine, Sudbury, ON, Canada
| | - Daniel Lelli
- Department of Neurology and Otolaryngology, University of Ottawa and Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Darren Tse
- Department of Neurology and Otolaryngology, University of Ottawa and Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Peter Johns
- Department of Emergency Medicine University of Ottawa and Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Krishan Yadav
- Department of Emergency Medicine University of Ottawa and Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Jeffrey J Perry
- Department of Emergency Medicine University of Ottawa and Ottawa Hospital Research Institute, Ottawa, ON, Canada
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Bächinger D, Tarnutzer AA, Gold R, Lukas C, Dazert S, Dlugaiczyk J. [Acute vestibular syndrome with cochlear involvement-a neurologic emergency?]. HNO 2024; 72:582-586. [PMID: 38172269 PMCID: PMC11266223 DOI: 10.1007/s00106-023-01403-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/23/2023] [Indexed: 01/05/2024]
Affiliation(s)
- David Bächinger
- Klinik für Hals‑, Nasen- und Ohrenheilkunde, St. Elisabeth-Hospital, Ruhr-Universität Bochum, Bochum, Deutschland.
- Klinik für Ohren‑, Nasen‑, Hals und Gesichtschirurgie, Universitätsspital Zürich, Rämistrasse 100, 8091, Zürich, Schweiz.
- Universität Zürich, Zürich, Schweiz.
| | - Alexander A Tarnutzer
- Universität Zürich, Zürich, Schweiz
- Klinik für Neurologie, Kantonsspital Baden, Baden, Schweiz
| | - Ralf Gold
- Neurologische Universitätsklinik, St. Josef Hospital, Ruhr-Universität Bochum, Bochum, Deutschland
| | - Carsten Lukas
- Institut für Neuroradiologie, St. Josef Hospital, Ruhr-Universität Bochum, Bochum, Deutschland
| | - Stefan Dazert
- Klinik für Hals‑, Nasen- und Ohrenheilkunde, St. Elisabeth-Hospital, Ruhr-Universität Bochum, Bochum, Deutschland
| | - Julia Dlugaiczyk
- Klinik für Ohren‑, Nasen‑, Hals und Gesichtschirurgie, Universitätsspital Zürich, Rämistrasse 100, 8091, Zürich, Schweiz
- Universität Zürich, Zürich, Schweiz
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Martinez C, Wang Z, Zalazar G, Carmona S, Kattah J, Tarnutzer AA. Systematic Review and Meta-Analysis of the Diagnostic Accuracy of a Graded Gait and Truncal Instability Rating in Acutely Dizzy and Ataxic Patients. CEREBELLUM (LONDON, ENGLAND) 2024:10.1007/s12311-024-01718-6. [PMID: 38990511 DOI: 10.1007/s12311-024-01718-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/02/2024] [Indexed: 07/12/2024]
Abstract
BACKGROUND In patients presenting with acute prolonged vertigo and/or gait imbalance, the HINTS [Head-Impulse, Nystagmus, Test-of-Skew] are very valuable. However, their application may be limited by lack of training and absence of vertigo/nystagmus. Alternatively, a graded gait/truncal-instability (GTI, grade 0-3) rating may be applied. METHODS We performed a systematic search (MEDLINE/Embase) to identify studies reporting on the diagnostic accuracy of bedside examinations in adults with acute vestibular syndrome. Diagnostic test properties were calculated for findings using a random-effects model. Results were stratified by GTI-rating used. RESULTS We identified 6515 articles and included 18 studies (n = 1025 patients). Ischemic strokes (n = 665) and acute unilateral vestibulopathy (n = 306) were most frequent. Grade 2/3 GTI had moderate sensitivity (70.8% [95% confidence-interval (CI) = 59.3-82.3%]) and specificity (82.7 [71.6-93.8%]) for predicting a central cause, whereas grade 3 GTI had a lower sensitivity (44.0% [34.3-53.7%] and higher specificity (99.1% [98.0-100.0%]). In comparison, diagnostic accuracy of HINTS (sensitivity = 96.8% [94.8-98.8%]; specificity = 97.6% [95.3-99.9%]) was higher. When combining central nystagmus-patterns and grade 2/3 GTI, sensitivity was increased to 76.4% [71.3-81.6%] and specificity to 90.3% [84.3-96.3%], however, no random effects model could be used. Sensitivity was higher in studies using the GTI rating (grade 2/3) by Lee (2006) compared to the approach by Moon (2009) (73.8% [69.0-78.0%] vs. 57.4% [49.5-64.9%], p = 0.001). CONCLUSIONS In comparison to HINTS, the diagnostic accuracy of GTI is inferior. When combined with central nystagmus-patterns, diagnostic accuracy could be improved based on preliminary findings. GTI can be readily applied in the ED-setting and also in patients with acute imbalance syndrome.
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Affiliation(s)
| | - Zheyu Wang
- Division of Quantitative Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Guillermo Zalazar
- Hospital de San Luis, Fundación San Lucas Para La Neurociencia, Rosario, Argentina
| | - Sergio Carmona
- Fundación San Lucas Para La Neurosciencia, Rosario, Argentina
| | - Jorge Kattah
- University of Illinois College of Medicine, Peoria, IL, USA
| | - Alexander Andrea Tarnutzer
- Faculty of Medicine, University of Zurich, Zurich, Switzerland.
- Neurology, Cantonal Hospital of Baden, Baden, Switzerland.
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Ashiq IN, Khan S, Yousaf A. Comparative Diagnostic Accuracy of Computed Tomography Scan versus Magnetic Resonance Imaging in the Emergency Department for the Evaluation of Dizziness: A Systematic Review. Indian J Radiol Imaging 2024; 34:488-495. [PMID: 38912244 PMCID: PMC11188715 DOI: 10.1055/s-0044-1778726] [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] [Indexed: 06/25/2024] Open
Abstract
Introduction Both computed tomography (CT) and magnetic resonance imaging (MRI) play significant roles in assessing patients with dizziness. However, understanding the comparative capabilities of these imaging methods in detecting pathological causes is crucial for determining the most suitable modality. This review aims to evaluate the diagnostic accuracy and clinical utility of MRI and CT scans in managing patients with acute dizziness in the emergency department. Methods Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, we conducted a comprehensive search in various databases (PubMed, Google Scholar, Cochrane library, British Medical Journals, and ScienceDirect) from 2010 to 2023. We used the QUADAS-2 tool to assess bias risk, considering MRI as the reference standard and CT scan as the index test. Results The final analysis included six studies, with 3,993 patients (48% male, 52% female; average age: 56.7 years). Three studies were of high quality, two of medium quality, and one of low quality. Central ischemia was the predominant diagnosis for dizziness. MRI demonstrated higher diagnostic efficacy for stroke compared with CT scans, while mixed results were observed for other multiple diseases when both MRI and CT scans were used. Conclusion MRI outperforms CT scans in diagnosing dizziness-related strokes. However, for other causes of dizziness, there is no significant difference between these techniques. Nevertheless, it is crucial to acknowledge the limitations associated with MRI. Consequently, to address these concerns, the selection of an imaging technique should be tailored to the individual based on factors such as their clinical presentation, comorbidities, and socioeconomic circumstances.
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Affiliation(s)
| | - Safeer Khan
- Department of Pharmaceutical Sciences, Institute of Chemical Sciences, Government College University, Lahore, Punjab, Pakistan
| | - Adil Yousaf
- Green Health Pharmaceutical Company, Riyadh, Kingdom of Saudi Arabia
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von Bernstorff M, Obermueller T, Blum J, Hoxhallari E, Hofmann VM, Pudszuhn A. Accuracy of the Bedside Examination in Patients With Suspected Acute Unilateral Peripheral Vestibulopathy. Neurologist 2024; 29:238-242. [PMID: 38797929 DOI: 10.1097/nrl.0000000000000571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
OBJECTIVE Acute unilateral peripheral vestibulopathy (AUPVP) is a frequent form of peripheral vestibular vertigo characterized by unilateral vestibular organ dysfunction. Diagnostic challenges in anamnesis and bedside examination can lead to potential misdiagnoses. This study investigated the sensitivity of bedside examinations in diagnosing AUPVP. METHODS This retrospective analysis examined 136 AUPVP inpatients at a level 3 university hospital between 2017 and 2019. Demographic data and bedside test results were collected. Instrumental otoneurological tests included caloric testing and video head impulse test (HIT). The sensitivity of each bedside parameter was computed based on the instrumental diagnostics, and statistical analyses were performed. RESULTS The study included 76 men and 60 women, with a mean age of 59.2 years. Spontaneous nystagmus exhibited a sensitivity of 92%, whereas the absence of skew deviation was identified with a sensitivity of 98%. Abnormal bedside HIT showed a sensitivity of 87%. The combined HINTS (HIT, nystagmus, and test of skew) had a sensitivity of 83%. The Romberg test and Fukuda test demonstrated sensitivities of 26% and 48%, respectively. CONCLUSION The sensitivity of bedside tests varied from 26% to 98%. This aligns with previous literature, highlighting the challenge of differentiating AUPVP from vestibular pseudoneuritis solely through bedside examination. Although the tests excel in excluding central causes, they are insufficient for diagnosing AUPVP with certainty. In addition, the bedside examination sensitivities vary widely, and early radiological imaging can be misleading. Therefore, this study underlines the necessity of prompt otoneurological testing for accurate exclusion of vestibular pseudoneuritis and thus improve patient outcomes.
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Affiliation(s)
- Maximilian von Bernstorff
- Klinik für Hals, Nasen und Ohrenheilkunde, Campus Benjamin Franklin, Charité Universitätsmedizin Berlin, Berlin, Germany
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Jasinska-Nowacka A, Niemczyk K. Application of a Video Head Impulse Test in the Diagnosis of Vestibular Neuritis. Life (Basel) 2024; 14:757. [PMID: 38929740 PMCID: PMC11204878 DOI: 10.3390/life14060757] [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: 05/09/2024] [Revised: 06/08/2024] [Accepted: 06/10/2024] [Indexed: 06/28/2024] Open
Abstract
In patients presenting in the emergency department with acute vertigo, a rapid and accurate differential diagnosis is crucial, as posterior circulation strokes can mimic acute vestibular losses, leading to inappropriate treatment. The diagnosis of vestibular neuritis is made based on the clinical manifestation and a bedside otoneurological assessment. In the clinical examination, an evaluation of the vestibulo-ocular reflex is the key element; however, the accuracy of the bedside head impulse test depends on the clinician's experience. Thus, new diagnostic methods are needed to objectify and facilitate such rapid vestibular evaluations. The aim of our paper is to provide a comprehensive review of the video head impulse test's application in the diagnosis of vestibular neuritis. Numerous studies have reported advantages that make this method helpful in detailed otoneurological evaluations; in contrast to the bedside head impulse test, it enables an analysis of all six semicircular canals function and records the covert corrective saccades, which are invisible to the naked eye. As a portable and easy diagnostic tool, it is known to improve the diagnostic accuracy in patients with acute vertigo presenting in the emergency department. Moreover, as it evaluates the vestibulo-ocular reflex across different frequencies, as compared to caloric tests, it can be used as an additional test that is complementary to videonystagmography. Recently, several papers have described the application of the video head impulse test in follow-up and recovery evaluations in patients with vestibular neuritis.
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Affiliation(s)
- Agnieszka Jasinska-Nowacka
- Department of Otorhinolaryngology, Head and Neck Surgery, Medical University of Warsaw, 02-091 Warszawa, Poland;
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Wang LL, Thompson TA, Shih RY, Ajam AA, Bulsara K, Burns J, Davis MA, Ivanidze J, Kalnins A, Kuo PH, Ledbetter LN, Pannell JS, Pollock JM, Shakkottai VG, Shih RD, Soares BP, Soderlund KA, Utukuri PS, Woolsey S, Policeni B. ACR Appropriateness Criteria® Dizziness and Ataxia: 2023 Update. J Am Coll Radiol 2024; 21:S100-S125. [PMID: 38823940 DOI: 10.1016/j.jacr.2024.02.018] [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: 02/20/2024] [Accepted: 02/28/2024] [Indexed: 06/03/2024]
Abstract
Diagnostic evaluation of a patient with dizziness or vertigo is complicated by a lack of standardized nomenclature, significant overlap in symptom descriptions, and the subjective nature of the patient's symptoms. Although dizziness is an imprecise term often used by patients to describe a feeling of being off-balance, in many cases dizziness can be subcategorized based on symptomatology as vertigo (false sense of motion or spinning), disequilibrium (imbalance with gait instability), presyncope (nearly fainting or blacking out), or lightheadedness (nonspecific). As such, current diagnostic paradigms focus on timing, triggers, and associated symptoms rather than subjective descriptions of dizziness type. Regardless, these factors complicate the selection of appropriate diagnostic imaging in patients presenting with dizziness or vertigo. This document serves to aid providers in this selection by using a framework of definable clinical variants. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision process support the systematic analysis of the medical literature from peer reviewed journals. Established methodology principles such as Grading of Recommendations Assessment, Development, and Evaluation or GRADE are adapted to evaluate the evidence. The RAND/UCLA Appropriateness Method User Manual provides the methodology to determine the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where peer reviewed literature is lacking or equivocal, experts may be the primary evidentiary source available to formulate a recommendation.
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Affiliation(s)
- Lily L Wang
- University of Cincinnati Medical Center, Cincinnati, Ohio.
| | - Trevor A Thompson
- Research Author, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Robert Y Shih
- Panel Chair, Uniformed Services University, Bethesda, Maryland
| | | | - Ketan Bulsara
- UCONN Health, University of Connecticut, Farmington, Connecticut, Neurosurgery expert
| | | | - Melissa A Davis
- Yale University School of Medicine, New Haven, Connecticut; Committee on Emergency Radiology-GSER
| | | | | | - Phillip H Kuo
- University of Arizona, Tucson, Arizona; Commission on Nuclear Medicine and Molecular Imaging
| | | | | | | | - Vikram G Shakkottai
- University of Texas Southwestern Medical Center, Dallas, Texas; American Academy of Neurology
| | - Richard D Shih
- Schmidt College of Medicine, Florida Atlantic University, Boca Raton, Florida; American College of Emergency Physicians
| | - Bruno P Soares
- The University of Vermont Medical Center, Burlington, Vermont
| | | | | | - Sarah Woolsey
- Association for Utah Community Health, Salt Lake City, Utah; American Academy of Family Physicians
| | - Bruno Policeni
- Specialty Chair, University of Iowa Hospitals and Clinics, Iowa City, Iowa
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Duvieusart B, Leung TS, Koohi N, Kaski D. Digital biomarkers from gaze tests for classification of central and peripheral lesions in acute vestibular syndrome. Front Neurol 2024; 15:1354041. [PMID: 38595848 PMCID: PMC11003708 DOI: 10.3389/fneur.2024.1354041] [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: 12/12/2023] [Accepted: 01/29/2024] [Indexed: 04/11/2024] Open
Abstract
Acute vestibular syndrome (AVS) is characterised by a sudden vertigo, gait instability, nausea and nystagmus. Accurate and rapid triage of patients with AVS to differentiate central (potentially sinister) from peripheral (usually benign) root causes is a challenge faced across emergency medicine settings. While there exist bedside exams which can reliably differentiate serious cases, they are underused due to clinicians' general unfamiliarity and low confidence interpreting results. Nystagmus is a fundamental part of AVS and can facilitate triaging, but identification of relevant characteristics requires expertise. This work presents two quantitative digital biomarkers from nystagmus analysis, which capture diagnostically-relevant information. The directionality biomarker evaluates changes in direction to differentiate spontaneous and gaze-evoked (direction-changing) nystagmus, while the intensity differential biomarker describes changes in intensity across eccentric gaze tests. In order to evaluate biomarkers, 24 sets of three gaze tests (left, right, and primary) are analysed. Both novel biomarkers were found to perform well, particularly directionality which was a perfect classifier. Generally, the biomarkers matched or eclipsed the performance of quantitative nystagmus features found in the literature. They also surpassed the performance of a support vector machine classifier trained on the same dataset, which achieved an accuracy of 75%. In conclusion, these biomarkers simplify the diagnostic process for non-specialist clinicians, bridging the gap between emergency care and specialist evaluation, ultimately benefiting patients with AVS.
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Affiliation(s)
- Benjamin Duvieusart
- Department of Medical Physics and Biomedical Engineering, University College London, London, United Kingdom
- SENSE Research Unit, Department of Clinical and Movement Neurosciences, University College London, London, United Kingdom
| | - Terence S. Leung
- Department of Medical Physics and Biomedical Engineering, University College London, London, United Kingdom
| | - Nehzat Koohi
- SENSE Research Unit, Department of Clinical and Movement Neurosciences, University College London, London, United Kingdom
| | - Diego Kaski
- SENSE Research Unit, Department of Clinical and Movement Neurosciences, University College London, London, United Kingdom
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Jaganathan N, Mohamed MH, Md Pauzi AL, Mahayidin H, Hanapai AF, Wan Sulaiman WA, Basri H, Inche Mat L. Video head impulse test in stroke: a review of published studies. Front Neurol 2024; 15:1339039. [PMID: 38497038 PMCID: PMC10940455 DOI: 10.3389/fneur.2024.1339039] [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: 11/15/2023] [Accepted: 02/19/2024] [Indexed: 03/19/2024] Open
Abstract
Accurate and timely diagnosis of posterior circulation stroke in patients with acute dizziness is a challenge that can lead to misdiagnosis and significant harm. The present review sought to identify and describe published research on the clinical application of vHIT in posterior circulation stroke. vHIT, a portable device, has gained prominence in evaluating peripheral vestibular disorders and offers potential applications in diagnosing neurological disorders, particularly posterior circulation stroke. Several studies have shown that vHIT can differentiate between stroke and vestibular neuritis based on VOR gain values, with high sensitivity and specificity. The manuscript also discusses vHIT's performance in differentiating between types of posterior circulation stroke, such as PICA, AICA, and SCA strokes. While vHIT has demonstrated promise, the review emphasizes the need for further research to validate its use as a tool to rule out stroke in acute dizziness patients in the emergency department. In conclusion, the manuscript underscores the potential of vHIT as a valuable addition to the diagnostic arsenal for acute dizziness, particularly in the context of posterior circulation stroke. It calls for further research and wider adoption of vHIT in clinical settings to improve patient care and reduce unnecessary costs associated with misdiagnoses.
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Affiliation(s)
- Niranjana Jaganathan
- Department of Neurology, Faculty of Medicine and Health Sciences, University Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mohd Hazmi Mohamed
- Department of Otorhinolaryngology, Faculty of Medicine and Health Sciences, University Putra Malaysia, Serdang, Selangor, Malaysia
| | - Ahmad Luqman Md Pauzi
- Department of Emergency, Faculty of Medicine and Health Sciences, University Putra Malaysia, Serdang, Selangor, Malaysia
| | - Hasni Mahayidin
- Department of Pathology, Faculty of Medicine and Health Sciences, University Putra Malaysia, Serdang, Selangor, Malaysia
| | - Ahmad Firdaus Hanapai
- Department of Neurology, Faculty of Medicine and Health Sciences, University Putra Malaysia, Serdang, Selangor, Malaysia
| | - Wan Aliaa Wan Sulaiman
- Department of Neurology, Faculty of Medicine and Health Sciences, University Putra Malaysia, Serdang, Selangor, Malaysia
| | - Hamidon Basri
- Department of Neurology, Faculty of Medicine and Health Sciences, University Putra Malaysia, Serdang, Selangor, Malaysia
| | - Liyana Inche Mat
- Department of Neurology, Faculty of Medicine and Health Sciences, University Putra Malaysia, Serdang, Selangor, Malaysia
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Martín-Enguix D, Pérez-Fernández N, Gomez-Gabaldón N, Medina-Gámez JA, Morales-Escobar FJ. [Comprehensive approach to vertigo: Diagnostic algorithm, causes, treatments, and referral criteria from the perspective of primary care. SEMERGEN consensus document]. Semergen 2024; 50:102114. [PMID: 37832471 DOI: 10.1016/j.semerg.2023.102114] [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: 07/31/2023] [Revised: 09/06/2023] [Accepted: 09/11/2023] [Indexed: 10/15/2023]
Abstract
Vertigo is a common symptom that can have various causes and may require a comprehensive approach for its diagnosis and treatment from primary care. A diagnostic algorithm based on the classification proposed by the Otoneurology Commission of the SEORL-PCF is suggested, which facilitates the classification of the different types of vertigo and provides referral criteria for patients from primary care to other specialties. A review of the available treatments based on the underlying cause is conducted for appropriate therapeutic management. This document is expected to become a valuable tool for professionals treating patients with vertigo. The document is based on scientific evidence and on the experience of experts in the field from various medical specialties; and seeks to improve the understanding and clinical approach to acute vertigo from primary care.
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Affiliation(s)
- D Martín-Enguix
- Medicina Familiar y Comunitaria, Centro de Salud Albuñol, Distrito Sanitario Granada Sur, Albuñol, Granada, España.
| | - N Pérez-Fernández
- Otorrinolaringología, Clínica Universidad de Navarra, Madrid, España
| | - N Gomez-Gabaldón
- Medicina Familiar y Comunitaria, Otorrinolaringología, Hospital de Hellín, Hellín, Albacete, España
| | - J A Medina-Gámez
- Neurología, Medicina Familiar y Comunitaria, Centro de Salud de Armilla, Distrito Sanitario Granada Metropolitano, Armilla, Granada, España
| | - F J Morales-Escobar
- Medicina Familiar y Comunitaria, Centro de Salud Arucas, Arucas, Las Palmas, España
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13
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Kogej M, Scherzberg J, Schacher S, Berger M, Seidel M, Gräff I. Clinical use of the manchester triage system in patients with dizziness - An observational study in the emergency department. Int Emerg Nurs 2024; 73:101403. [PMID: 38295743 DOI: 10.1016/j.ienj.2023.101403] [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: 07/25/2023] [Revised: 12/03/2023] [Accepted: 12/23/2023] [Indexed: 03/11/2024]
Abstract
INTRODUCTION Dizziness is a common symptom with diverse causes, including ear-nose-throat, internal, neurological, or psychiatric origins. While for most parts treatable in nonemergency settings, it can also signal time-critical conditions, like an unnoticed stroke, requiring prompt diagnosis and treatment to prevent lasting harm or death. The aim of this study was to evaluate the validity of the Manchester Triage System in classifying patients presenting with dizziness based on final diagnoses and patient outcomes, as no specific flow chart exists for this symptom in the MTS. METHODS Monocentric, retrospective observational study. To test the validity of the MTS in the triage of dizziness patients, the treatment level was used as a surrogate parameter. We grouped the patients into outpatient, normal ward and intermediate care/intensive care unit (IMC/ICU) patients. Furthermore, we analyzed the dizziness patients in subgroups based on the origin of their dizziness to identify potential improvements for the MTS. Patients with dizziness and stroke, who represent the most vulnerable group of dizziness patients, were also evaluated separately. RESULTS During the observation period, 2958 patients presented at the ED with the symptom dizziness and 52 017 without, who formed the reference group. When examining the relationship between triage level and subsequent treatment level, a larger deviation is observed compared to the reference group. The receiver operating characteristics (ROC) regarding hospital admission in general showed an area under the curve (AUC) in the subgroup with dizziness due to a central nervous system causes (n=838) of 0.69 (95% CI 0.65 - 0.72) and in the subgroup of dizziness by other organic cause (n=901), an AUC of 0.64 (95% CI 0.60 - 0.68). The reference group had an AUC 0.75 (95% CI 0.75 - 0.76) here. In relation to admission to IMC/ICU, the results were similar. The sensitivity of the MTS in terms of an adequate initial assessment of dizziness patients with stroke or transient ischemic attack (TIA) was 0.39, the specificity was 0.91 (reference group sensitivity 0.72, specificity 0.82). CONCLUSION In terms of construct validity, the present study revealed that the use of MTS as a priority triage assessment tool was found to be less accurate in emergency patients with dizziness, particularly those diagnosed with stroke/TIA, when compared to other emergency patients.
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Affiliation(s)
- Monika Kogej
- Department of Clinical Acute and Emergency Medicine, University Hospital Bonn, Bonn, Germany
| | - Julia Scherzberg
- Department of Anesthesiology and Critical Care, University Hospital Freiburg, Freiburg, Germany
| | - Sylvia Schacher
- Department of Clinical Emergency Medicine, Helios Hospital Siegburg, Siegburg, Germany
| | - Moritz Berger
- Institute for Medical Biometry, Informatics and Epidemiology, University Hospital Bonn, Bonn, Germany
| | - Matthias Seidel
- Department of Emergency Medicine, St. Antonius Hospital, Cologne, Germany
| | - Ingo Gräff
- Department of Clinical Acute and Emergency Medicine, University Hospital Bonn, Bonn, Germany.
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14
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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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Ursat G, Corda M, Ryard J, Guillet C, Guigou C, Tissier C, Bozorg Grayeli A. Virtual-reality-enhanced mannequin to train emergency physicians to examine dizzy patients using the HINTS method. Front Neurol 2024; 14:1335121. [PMID: 38249749 PMCID: PMC10796789 DOI: 10.3389/fneur.2023.1335121] [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: 11/08/2023] [Accepted: 12/05/2023] [Indexed: 01/23/2024] Open
Abstract
Introduction Acute vertigo is a frequent chief complaint in the emergency departments, and its efficient management requires thorough training. The HINTS protocol is a valid method to screen patients in the emergency room, but its application in routine is hindered by the lack of training. This study aimed to evaluate the training of emergency physicians for the HINTS method based on a mannequin-based virtual reality simulator (MBVRS). Methods We conducted a monocenter, prospective, longitudinal, and randomized cohort study in an Emergency Department at a regional university hospital. We included 34 emergency physicians randomized into two equal groups matched by age and professional experience. The control group attended a theoretical lesson with video demonstrations and the test group received a simulation-based training in addition to the lecture. Results We showed that the test group had a higher diagnosis performance for the HINTS method compared to the control group as evaluated by the simulator at 1 month (89% sensitivity versus 45, and 100% specificity versus 86% respectively, p < 001, Fisher's exact test). Evaluation at 6 months showed a similar advantage to the test group. Discussion The MBVRS is a useful pedagogic tool for the HINTS protocol in the emergency department. The advantage of a unique training session can be measured up to 6 months after the lesson.
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Affiliation(s)
- Guillaume Ursat
- Emergency Department, Dijon University Hospital, Dijon, France
| | - Morgane Corda
- Otolaryngology Department, Dijon University Hospital, Dijon, France
| | - Julien Ryard
- Institut Image, Ecole Nationale d’Arts-et-Métiers, Chalon-sur-Saône, France
| | - Christophe Guillet
- Institut Image, Ecole Nationale d’Arts-et-Métiers, Chalon-sur-Saône, France
| | - Caroline Guigou
- Otolaryngology Department, Dijon University Hospital, Dijon, France
- ICMUB, CNRS, Université Bourgogne-Franche-Comté, Dijon, France
| | - Cindy Tissier
- Emergency Department, Dijon University Hospital, Dijon, France
| | - Alexis Bozorg Grayeli
- Otolaryngology Department, Dijon University Hospital, Dijon, France
- ICMUB, CNRS, Université Bourgogne-Franche-Comté, Dijon, France
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16
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Büki B, Irsigler J, Jünger H, Harrer C, Schubert MC. Visual scale to document acute dizziness in the hospital. J Vestib Res 2024; 34:169-175. [PMID: 38968034 DOI: 10.3233/ves-240040] [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: 07/07/2024]
Abstract
BACKGROUND Managing acute vertigo/dizziness for inpatients requires valid communication between the various healthcare professionals that triage such life-threatening presentations, yet there are no current scaling methods for managing such acute vertigo symptoms for inpatients. OBJECTIVE To describe the development and validation of the Krems Acute Vertigo/Dizziness Scale (KAVEDIS), a new instrument for tracking subjective symptoms (vertigo, dizziness) and gait impairment across four unique vestibular diagnoses (Menière's disease, benign paroxysmal positional vertigo, peripheral vestibular hypofunction, and vestibular migraine) over a one-year period after inpatient hospital admission. METHODS Retrospective data collection study from KAVEDIS scale and chart documentation. RESULTS The KAVEDIS scale can significantly distinguish scores from admission to discharge in three of four vestibular diagnoses. The documented course of subjective vestibular symptoms and gait disturbances were correlated in all four groups. CONCLUSION We suggest that KAVEDIS documentation among inpatients admitted with acute vertigo/dizziness may improve communication between the various intervening clinicians and help to raise concern in cases of symptomprogression.
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Affiliation(s)
- Bela Büki
- Department of Otolaryngology, Karl Landsteiner University Hospital Krems, Krems an der Donau, Austria
| | - Jaqueline Irsigler
- Department of Otolaryngology, Karl Landsteiner University Hospital Krems, Krems an der Donau, Austria
| | - Heinz Jünger
- Department of Otolaryngology, Karl Landsteiner University Hospital Krems, Krems an der Donau, Austria
| | - Christine Harrer
- Department of Otolaryngology, Karl Landsteiner University Hospital Krems, Krems an der Donau, Austria
| | - Michael C Schubert
- Department of Otolaryngology-Head and Neck Surgery, Laboratory of Vestibular NeuroAdaptation, Johns Hopkins University, Baltimore, MD, USA
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University, Baltimore, MD, USA
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Michailidou E, Korda A, Wyss T, Bardins S, Schneider E, Morrison M, Wagner F, Caversaccio MD, Mantokoudis G. The value of saccade metrics and VOR gain in detecting a vestibular stroke. J Vestib Res 2024; 34:49-61. [PMID: 38160379 DOI: 10.3233/ves-230083] [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: 01/03/2024]
Abstract
OBJECTIVE A normal video Head Impulse Test is the gold standard in the emergency department to rule-in patients with an acute vestibular syndrome and a stroke. We aimed to compare the diagnostic accuracy of vHIT metrics regarding the vestibulo-ocular reflex gain and the corrective saccades in detecting vestibular strokes. METHODS Prospective cross-sectional study (convenience sample) of patients presenting with acute vestibular syndrome in the emergency department of a tertiary referral centre between February 2015 and May 2020. We screened 1677 patients and enrolled 76 patients fulfilling the inclusion criteria of acute vestibular syndrome. All patients underwent video head impulse test with automated and manual data analysis. A delayed MRI served as a gold standard for vestibular stroke confirmation. RESULTS Out of 76 patients, 52 were diagnosed with acute unilateral vestibulopathy and 24 with vestibular strokes. The overall accuracy of detecting stroke with an automated vestibulo-ocular reflex gain was 86.8%, compared to 77.6% for cumulative saccade amplitude and automatic saccade mean peak velocity measured by an expert and 71% for cumulative saccade amplitude and saccade mean peak velocity measured automatically. Gain misclassified 13.1% of the patients as false positive or false negative, manual cumulative saccade amplitude and saccade mean peak velocity 22.3%, and automated cumulative saccade amplitude and saccade mean peak velocity 28.9% respectively. CONCLUSIONS We found a better accuracy of video head impulse test for the diagnosis of vestibular strokes when using the vestibulo-ocular reflex gain than using saccade metrics. Nevertheless, saccades provide an additional and important information for video head impulse test evaluation. The automated saccade detection algorithm is not yet perfect compared to expert analysis, but it may become a valuable tool for future non-expert video head impulse test evaluations.
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Affiliation(s)
- Efterpi Michailidou
- 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
| | - Thomas Wyss
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Stanislav Bardins
- Institute of Medical Technology, Brandenburg University of Technology Cottbus - Senftenberg, Cottbus, Germany
| | - Erich Schneider
- Institute of Medical Technology, Brandenburg University of Technology Cottbus - Senftenberg, Cottbus, Germany
| | - Miranda Morrison
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Franca Wagner
- University Institute of Diagnostic and Interventional Neuroradiology, 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
| | - Georgios Mantokoudis
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
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Nikles F, Kerkeni H, Zamaro E, Korda A, Wagner F, Sauter TC, Kalla R, Morrison M, Mantokoudis G. Do monosymptomatic stroke patients with dizziness present a vestibular syndrome without nystagmus? An underestimated entity. Eur J Neurol 2024; 31:e16066. [PMID: 37738525 PMCID: PMC11235630 DOI: 10.1111/ene.16066] [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] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 09/04/2023] [Accepted: 09/04/2023] [Indexed: 09/24/2023]
Abstract
BACKGROUND AND PURPOSE Vestibular symptoms are common in emergency department (ED) patients and have various causes, including stroke. Accurate identification of stroke in patients with vestibular symptoms is crucial for timely management. We conducted a prospective cross-sectional study from 2015 to 2019 to determine stroke prevalence and associated symptoms in ED patients with vestibular symptoms, aiming to improve diagnosis and outcomes. METHODS As part of the DETECT project, we screened 1647 ED patients with acute vestibular symptoms. Following a retrospective analysis of 961 head and neck magnetic resonance imaging (MRI) scans, we included 122 confirmed stroke cases and assessed them for vestibular signs and symptoms. RESULTS Stroke prevalence in dizzy patients was 13% (122/961 MRI scans). Most patients (95%) presented with acute vestibular symptoms with or without nystagmus, whereas 5% had episodic vestibular syndrome (EVS). Nystagmus was present in 50% of stroke patients. Eighty percent had a purely posterior circulation stroke, and nystagmus was absent in 46% of these patients. Seven patients (6%) had lesions in both the anterior and posterior circulation. Vertigo was experienced by 52% regardless of territory. CONCLUSIONS A stroke was identified in 13% of ED patients presenting with acute vestibular symptoms. In 5%, it was EVS. Most strokes were in the posterior circulation territory; vertigo occurred with similar frequency in anterior and posterior circulation stroke, and absence of nystagmus was common in both.
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Affiliation(s)
- Florence Nikles
- Department of Otorhinolaryngology, Head and Neck Surgery, InselspitalUniversity Hospital Bern and University of BernBernSwitzerland
| | - Hassen Kerkeni
- Department of Neurology, InselspitalUniversity Hospital Bern and University of BernBernSwitzerland
| | - Ewa Zamaro
- Department of Otorhinolaryngology, Head and Neck Surgery, InselspitalUniversity Hospital Bern and University of BernBernSwitzerland
| | - Athanasia Korda
- Department of Otorhinolaryngology, Head and Neck Surgery, InselspitalUniversity Hospital Bern and University of BernBernSwitzerland
| | - Franca Wagner
- University Institute of Diagnostic and Interventional Neuroradiology, InselspitalUniversity Hospital Bern and University of BernBernSwitzerland
| | - Thomas C. Sauter
- Department of Emergency Medicine, InselspitalUniversity Hospital Bern and University of BernBernSwitzerland
| | - Roger Kalla
- Department of Neurology, InselspitalUniversity Hospital Bern and University of BernBernSwitzerland
| | - Miranda Morrison
- Department of Otorhinolaryngology, Head and Neck Surgery, InselspitalUniversity Hospital Bern and University of BernBernSwitzerland
| | - Georgios Mantokoudis
- Department of Otorhinolaryngology, Head and Neck Surgery, InselspitalUniversity Hospital Bern and University of BernBernSwitzerland
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Rivero-de-Aguilar A, Soto-Varela A, Puente-Hernandez M, Porta-Etessam J. Neurotological emergencies: a narrative review. Eur Arch Otorhinolaryngol 2023; 280:4759-4774. [PMID: 37548703 DOI: 10.1007/s00405-023-08125-3] [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: 06/08/2023] [Accepted: 07/12/2023] [Indexed: 08/08/2023]
Abstract
INTRODUCTION Vestibular symptoms, including vertigo, dizziness, and gait unsteadiness, are a frequent reason of urgent medical assistance. Their causes are numerous and diverse, including neurological, otorhinolaryngological, and systemic diseases. Therefore, following a systematic approach is essential to differentiate striking but benign conditions from others that can compromise the patient's life. This study is intended to review vestibular disorders from a practical perspective and provide guidance to physicians involved in the emergency care of patients with vestibular symptoms. MATERIALS AND METHODS A narrative review was performed, revisiting the main causes of vestibular disorders. RESULTS Based on the speed of onset, duration, and history of similar episodes in the past, vestibular disorders can be categorized into three syndromic entities (acute, recurrent, and chronic vestibular syndromes). The most representative conditions pertaining to each group were reviewed (including their diagnosis and treatment) and a practical algorithm was proposed for their correct management in the acute care setting. CONCLUSIONS Carrying out a correct categorization of the vestibular disorders is essential to avoid diagnostic pitfalls. This review provides useful tools for clinicians to approach their patients with vestibular symptoms at the emergency room.
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Affiliation(s)
- Alejandro Rivero-de-Aguilar
- Department of Neurology, University Hospital Complex of Pontevedra, Mourente, S/N, 36071, Pontevedra, Spain.
- Department of Preventive Medicine and Public Health, University of Santiago de Compostela, Santiago de Compostela, Spain.
| | - Andrés Soto-Varela
- Department of Otorhinolaryngology, University Hospital Complex of Santiago de Compostela, Santiago de Compostela, Spain
- Department of Surgery and Medical-Surgical Specialities, University of Santiago de Compostela, Santiago de Compostela, Spain
| | | | - Jesús Porta-Etessam
- Department of Neurology, San Carlos Clinical Hospital, Madrid, Spain
- Department of Medicine, Complutense University of Madrid, Madrid, Spain
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Pelletier J, Koyfman A, Long B. Pearls for the Emergency Clinician: Posterior Circulation Stroke. J Emerg Med 2023; 65:e414-e426. [PMID: 37806810 DOI: 10.1016/j.jemermed.2023.07.007] [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: 12/01/2022] [Revised: 06/29/2023] [Accepted: 07/15/2023] [Indexed: 10/10/2023]
Abstract
BACKGROUND Posterior circulation (PC) stroke in adults is a rare, frequently misdiagnosed, serious condition that carries a high rate of morbidity. OBJECTIVE OF THE REVIEW This review evaluates the presentation, diagnosis, and management of PC stroke in the emergency department (ED) based on current evidence. DISCUSSION PC stroke presents most commonly with dizziness or vertigo and must be distinguished from more benign diagnoses. Emergency clinicians should consider this condition in patients with dizziness, even in younger patients and those who do not have traditional stroke risk factors. Neurologic examination for focal neurologic deficit, dysmetria, dysarthria, ataxia, and truncal ataxia is essential, as is the differentiation of acute vestibular syndrome vs. spontaneous episodic vestibular syndrome vs. triggered episodic vestibular syndrome. The HINTS (head impulse, nystagmus, and test of skew) examination can be useful for identifying dizziness presentations concerning for stroke when performed by those with appropriate training. However, it should only be used in patients with continuous dizziness who have ongoing nystagmus. Contrast tomography (CT), CT angiography, and CT perfusion have limited sensitivity for identifying PC strokes, and although magnetic resonance imaging is the gold standard, it may miss some PC strokes early in their course. Thrombolysis is recommended in patients presenting within the appropriate time window for thrombolytic therapy, and although some data suggest endovascular therapy for basilar artery and posterior cerebral artery infarcts is beneficial, its applicability for all PC strokes remains to be determined. CONCLUSIONS An understanding of PC stroke can assist emergency clinicians in diagnosing and managing this disease.
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Affiliation(s)
- Jessica Pelletier
- Department of Emergency Medicine, Washington University School of Medicine, St Louis, Missouri
| | - Alex Koyfman
- Department of Emergency Medicine, UT Southwestern, Dallas, Texas
| | - Brit Long
- San Antonio Uniformed Services Health Education Consortium, Department of Emergency Medicine, Brooke Army Medical Center, Fort Sam Houston, Texas.
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21
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Ha SH, Lee DK, Park G, Kim BJ, Chang JY, Kang DW, Kwon SU, Kim JS, Park HJ, Lee EJ. Prospective analysis of video head impulse tests in patients with acute posterior circulation stroke. Front Neurol 2023; 14:1256826. [PMID: 37808489 PMCID: PMC10557255 DOI: 10.3389/fneur.2023.1256826] [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: 07/12/2023] [Accepted: 09/05/2023] [Indexed: 10/10/2023] Open
Abstract
Background Video head impulse tests (vHITs), assessing the vestibulo-ocular reflex (VOR), may be helpful in the differential diagnosis of acute dizziness. We aimed to investigate vHITs in patients with acute posterior circulation stroke (PCS) to examine whether these findings could exhibit significant abnormalities based on lesion locations, and to evaluate diagnostic value of vHIT in differentiating dizziness between PCS and vestibular neuritis (VN). Methods We prospectively recruited consecutive 80 patients with acute PCS and analyzed vHIT findings according to the presence of dorsal brainstem stroke (DBS). We also compared vHIT findings between PCS patients with dizziness and a previously studied VN group (n = 29). Receiver operating characteristic (ROC) analysis was performed to assess the performance of VOR gain and its asymmetry in distinguishing dizziness between PCS and VN. Results Patients with PCS underwent vHIT within a median of 2 days from stroke onset. Mean horizontal VOR gain was 0.97, and there was no significant difference between PCS patients with DBS (n = 15) and without (n = 65). None exhibited pathologic overt corrective saccades. When comparing the PCS group with dizziness (n = 40) to the VN group (n = 29), patients with VN demonstrated significantly lower mean VOR gains in the ipsilesional horizontal canals (1.00 vs. 0.57, p < 0.001). VOR gain and their asymmetry effectively differentiated dizziness in the PCS from VN groups, with an area under the ROC curve of 0.86 (95% CI 0.74-0.98) and 0.91 (95% CI 0.83-0.99, p < 0.001), respectively. Conclusion Significantly abnormal vHIT results were rare in patients with acute PCS, even in the presence of DBS. Moreover, vHIT effectively differentiated dizziness between PCS and VN, highlighting its potential for aiding differential diagnosis of acute dizziness.
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Affiliation(s)
- Sang Hee Ha
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
- Department of Neurology, Gil Medical Center, Gachon University, Incheon, Republic of Korea
| | - Dong Kyu Lee
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Gayoung Park
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Bum Joon Kim
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jun Young Chang
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Dong-Wha Kang
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sun U. Kwon
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jong S. Kim
- Department of Neurology, Gangneung Asan Hospital, University of Ulsan, Gangneung, Gangwon-do, Republic of Korea
| | - Hong Ju Park
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Eun-Jae Lee
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Xavier F, Chouin E, Serin-Brackman V, Séverac Cauquil A. How a Subclinical Unilateral Vestibular Signal Improves Binocular Vision. J Clin Med 2023; 12:5847. [PMID: 37762788 PMCID: PMC10532309 DOI: 10.3390/jcm12185847] [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: 08/16/2023] [Revised: 09/01/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
The present study aimed to determine if an infra-liminal asymmetric vestibular signal could account for some of the visual complaints commonly encountered in chronic vestibular patients. We used infra-liminal galvanic vestibular stimulation (GVS) to investigate its potential effects on visuo-oculomotor behavior. A total of 78 healthy volunteers, 34 aged from 20 to 25 years old and 44 aged from 40 to 60 years old, were included in a crossover study to assess the impact of infra-liminal stimulation on convergence, divergence, proximal convergence point, and stereopsis. Under GVS stimulation, a repeated measures ANOVA showed a significant variation in near convergence (p < 0.001), far convergence (p < 0.001), and far divergence (p = 0.052). We also observed an unexpected effect of instantaneous blocking of the retest effect on the far divergence measurement. Further investigations are necessary to establish causal relationships, but GVS could be considered a behavioral modulator in non-pharmacological vestibular therapies.
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Affiliation(s)
- Frédéric Xavier
- Sensory and Cognitive Neuroscience Unit LNC UMR 7231 CNRS, Aix-Marseille University, St-Charles, 3, Place Victor Hugo, 13003 Marseille, France
- Pathophysiology and Therapy of Vestibular Disorders Unit GDR 2074, Aix-Marseille University, St-Charles, 3, Place Victor Hugo, 13003 Marseille, France
| | - Emmanuelle Chouin
- Pathophysiology and Therapy of Vestibular Disorders Unit GDR 2074, Aix-Marseille University, St-Charles, 3, Place Victor Hugo, 13003 Marseille, France
| | - Véronique Serin-Brackman
- Medical, Maieutics and Paramedical Department, Faculty of Health, University Toulouse III, Paul Sabatier, 31062 Toulouse, France
| | - Alexandra Séverac Cauquil
- ActiVest—Vestibular Functional Exploration in Humans and Non-Human Primates Unit GDR 2074, St-Charles, 3, Place Victor Hugo, 13003 Marseille, France
- Brain and Cognition Research Center CerCo UMR 5549 CNRS, University Toulouse III, Paul Sabatier, 31062 Toulouse, France
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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: 4] [Impact Index Per Article: 4.0] [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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Lo BM, Carpenter CR, Ducey S, Gottlieb M, Kaji A, Diercks DB, Diercks DB, Wolf SJ, Anderson JD, Byyny R, Carpenter CR, Friedman B, Gemme SR, Gerardo CJ, Godwin SA, Hahn SA, Hatten BW, Haukoos JS, Kaji A, Kwok H, Lo BM, Mace SE, Moran M, Promes SB, Shah KH, Shih RD, Silvers SM, Slivinski A, Smith MD, Thiessen MEW, Tomaszewski CA, Trent S, Valente JH, Wall SP, Westafer LM, Yu Y, Cantrill SV, Finnell JT, Schulz T, Vandertulip K. Clinical Policy: Critical Issues in the Management of Adult Patients Presenting to the Emergency Department With Acute Ischemic Stroke. Ann Emerg Med 2023; 82:e17-e64. [PMID: 37479410 DOI: 10.1016/j.annemergmed.2023.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2023]
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25
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Tarnutzer AA, Gold D, Wang Z, Robinson KA, Kattah JC, Mantokoudis G, Tehrani ASS, Zee DS, Edlow JA, Newman-Toker DE. Impact of Clinician Training Background and Stroke Location on Bedside Diagnostic Test Accuracy in the Acute Vestibular Syndrome - A Meta-Analysis. Ann Neurol 2023; 94:295-308. [PMID: 37038843 PMCID: PMC10524166 DOI: 10.1002/ana.26661] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 03/24/2023] [Accepted: 03/30/2023] [Indexed: 04/12/2023]
Abstract
OBJECTIVE Acute dizziness/vertigo is usually due to benign inner-ear causes but is occasionally due to dangerous neurologic ones, particularly stroke. Because symptoms and signs overlap, misdiagnosis is frequent and overuse of neuroimaging is common. We assessed the accuracy of bedside findings to differentiate peripheral vestibular from central neurologic causes. METHODS We performed a systematic search (MEDLINE and Embase) to identify studies reporting on diagnostic accuracy of physical examination in adults with acute, prolonged dizziness/vertigo ("acute vestibular syndrome" [AVS]). Diagnostic test properties were calculated for findings. Results were stratified by examiner type and stroke location. RESULTS We identified 6,089 citations and included 14 articles representing 10 study cohorts (n = 800). The Head Impulse, Nystagmus, Test of Skew (HINTS) eye movement battery had high sensitivity 95.3% (95% confidence interval [CI] = 92.5-98.1) and specificity 92.6% (95% CI = 88.6-96.5). Sensitivity was similar by examiner type (subspecialists 94.3% [95% CI = 88.2-100.0] vs non-subspecialists 95.0% [95% CI = 91.2-98.9], p = 0.55), but specificity was higher among subspecialists (97.6% [95% CI = 94.9-100.0] vs 89.1% [95% CI = 83.0-95.2], p = 0.007). HINTS sensitivity was lower in anterior cerebellar artery (AICA) than posterior inferior cerebellar artery (PICA) strokes (84.0% [95% CI = 65.3-93.6] vs 97.7% [95% CI = 93.3-99.2], p = 0.014) but was "rescued" by the addition of bedside hearing tests (HINTS+). Severe (grade 3) gait/truncal instability had high specificity 99.2% (95% CI = 97.8-100.0) but low sensitivity 35.8% (95% CI = 5.2-66.5). Early magnetic resonance imaging (MRI)-diffusion-weighted imaging (DWI; within 24-48 hours) was falsely negative in 15% of strokes (sensitivity 85.1% [95% CI = 79.2-91.0]). INTERPRETATION In AVS, HINTS examination by appropriately trained clinicians can differentiate peripheral from central causes and has higher diagnostic accuracy for stroke than MRI-DWI in the first 24-48 hours. These techniques should be disseminated to all clinicians evaluating dizziness/vertigo. ANN NEUROL 2023;94:295-308.
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Affiliation(s)
- Alexander A. Tarnutzer
- Neurology, Cantonal Hospital of Baden, Baden, Switzerland
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Daniel Gold
- Johns Hopkins University School of Medicine, Department of Neurology, Baltimore, MD
| | - Zheyu Wang
- Division of Biostatistics and Bioinformatics, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine
- Johns Hopkins Bloomberg School of Public Health, Department of Biostatistics, Baltimore, MD
| | - Karen A. Robinson
- Johns Hopkins University School of Medicine, Department of Medicine, Baltimore, MD
| | | | - Georgios Mantokoudis
- Department of Otorhinolaryngology, Head and Neck Surgery, lnselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Ali S. Saber Tehrani
- Johns Hopkins University School of Medicine, Department of Neurology, Baltimore, MD
| | - David S. Zee
- Johns Hopkins University School of Medicine, Department of Neurology, Baltimore, MD
| | - Jonathan A. Edlow
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA
- Harvard Medical School, Boston, MA
| | - David E. Newman-Toker
- Johns Hopkins University School of Medicine, Department of Neurology, Baltimore, MD
- Johns Hopkins Bloomberg School of Public Health, Department of Epidemiology, Baltimore, MD
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Wettstein VG, Feil B, Mono ML. Case report: A disconjugate pattern in video head impulse testing hints toward a central cause of acute vertigo. Front Neurol 2023; 14:1222475. [PMID: 37576019 PMCID: PMC10415030 DOI: 10.3389/fneur.2023.1222475] [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: 05/14/2023] [Accepted: 06/29/2023] [Indexed: 08/15/2023] Open
Abstract
When acute vertigo occurs, the challenge for the medical practitioner lies in the focused assessment to find the cause of its symptoms. Especially in the case of central pathology, a fast diagnosis is essential for therapy. The head impulse, nystagmus, test of skew (HINTS) protocol and the additional video head impulse test (VHIT) can distinguish between central and peripheral vestibular causes in the acute setting and thus help to set the right path for further evaluation and treatment. In this case, a patient with acute onset of vertigo presented with an unusual pattern in the VHIT. Binocular eye tracking showed a disconjugate horizontal vestibulo-ocular reflex (VOR) with severe loss or gain for the adducting eye yet with a lack of corrective saccades. The abducting eye produced a pattern of mild VOR gain loss yet with pronounced corrective saccades. Together with clinical findings that were compatible with internuclear ophthalmoplegia, a probable central lesion in the medial longitudinal fasciculus (MLF) region was suspected. The patient was sent to a tertiary hospital, where the initial MRI was negative, but due to additional neurological symptoms occurring later, multiple lesions in the cervical spine and cerebellum were detected. The hypothesis of an inflammatory demyelinating disease of the central nervous system (CNS) was made. A further workup led to the final diagnosis of neurosarcoidosis. In a retrospective neuroradiologic assessment, an alteration compatible with a non-active demyelinating lesion in the MLF was detected on secondary imaging as a probable cause of the initial pathophysiologic finding. In this report, we aimed to highlight the unusual case of a disconjugate VOR as a distinctive VHIT pattern hinting toward a central cause of acute vertigo that clinicians should be aware of.
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Affiliation(s)
| | - Bertram Feil
- Department of Radiology, Stadtspital Zürich Triemli, Zurich, Switzerland
| | - Marie-Luise Mono
- Department of Neurology, Stadtspital Zürich Triemli, Zurich, Switzerland
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Wüthrich M, Wang Z, Martinez CM, Carmona S, Mantokoudis G, Tarnutzer AA. Systematic review and meta-analysis of the diagnostic accuracy of spontaneous nystagmus patterns in acute vestibular syndrome. Front Neurol 2023; 14:1208902. [PMID: 37396773 PMCID: PMC10312004 DOI: 10.3389/fneur.2023.1208902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 06/05/2023] [Indexed: 07/04/2023] Open
Abstract
Objectives For the assessment of patients presenting with acute prolonged vertigo meeting diagnostic criteria for acute vestibular syndrome (AVS), bedside oculomotor examinations are essential to distinguish peripheral from central causes. Here we assessed patterns of spontaneous nystagmus (SN) observed in AVS and its diagnostic accuracy at the bedside. Methods MEDLINE and Embase were searched for studies (1980-2022) reporting on the bedside diagnostic accuracy of SN-patterns in AVS patients. Two independent reviewers determined inclusion. We identified 4,186 unique citations, examined 219 full manuscripts, and analyzed 39 studies. Studies were rated on risk of bias (QUADAS-2). Diagnostic data were extracted and SN beating-direction patterns were correlated with lesion locations and lateralization. Results Included studies reported on 1,599 patients, with ischemic strokes (n = 747) and acute unilateral vestibulopathy (n = 743) being most frequent. While a horizontal or horizontal-torsional SN was significantly more often found in peripheral AVS (pAVS) than in central AVS (cAVS) patients (672/709 [94.8%] vs. 294/677 [43.4%], p < 0.001), torsional and/or vertical SN-patterns were more prevalent in cAVS than in pAVS (15.1 vs. 2.6%, p < 0.001). For an (isolated) vertical/vertical-torsional SN or an isolated torsional SN specificity (97.7% [95% CI = 95.1-100.0%]) for a central origin etiology was high, whereas sensitivity (19.1% [10.5-27.7%]) was low. Absence of any horizontal SN was more frequently observed in cAVS than in pAVS (55.2 vs. 7.0%, p < 0.001). Ipsilesional and contralesional beating directions of horizontal SN in cAVS were found at similar frequency (28.0 vs. 21.7%, p = 0.052), whereas for pAVS a contralesional SN was significantly more frequent (95.2 vs. 2.5%, p < 0.001). For PICA strokes presenting with horizontal SN, beating direction was ipsilesional more often than contralesional (23.9 vs. 6.4%, p = 0.006), while the opposite was observed for AICA strokes (2.2 vs. 63.0%, p < 0.001). Conclusions (Isolated) vertical and/or torsional SN is found in a minority (15.1%) of cAVS patients only. When present, it is highly predictive for a central cause. A combined torsional-downbeating SN-pattern may be observed in pAVS also in cases with isolated lesions of the inferior branch of the vestibular nerve. Furthermore, in cAVS patients the SN beating direction itself does not allow a prediction on the lesion side.
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Affiliation(s)
| | - Zheyu Wang
- Division of Quantitative Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | | | - Sergio Carmona
- Fundación San Lucas para la Neurosciencia, Rosario, Argentina
| | - Georgios Mantokoudis
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Alexander Andrea Tarnutzer
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
- Department of Neurology, Cantonal Hospital of Baden, Baden, Switzerland
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Edlow JA, Carpenter C, Akhter M, Khoujah D, Marcolini E, Meurer WJ, Morrill D, Naples JG, Ohle R, Omron R, Sharif S, Siket M, Upadhye S, E Silva LOJ, Sundberg E, Tartt K, Vanni S, Newman-Toker DE, Bellolio F. Guidelines for reasonable and appropriate care in the emergency department 3 (GRACE-3): Acute dizziness and vertigo in the emergency department. Acad Emerg Med 2023; 30:442-486. [PMID: 37166022 DOI: 10.1111/acem.14728] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 03/14/2023] [Indexed: 05/12/2023]
Abstract
This third Guideline for Reasonable and Appropriate Care in the Emergency Department (GRACE-3) from the Society for Academic Emergency Medicine is on the topic adult patients with acute dizziness and vertigo in the emergency department (ED). A multidisciplinary guideline panel applied the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach to assess the certainty of evidence and strength of recommendations regarding five questions for adult ED patients with acute dizziness of less than 2 weeks' duration. The intended population is adults presenting to the ED with acute dizziness or vertigo. The panel derived 15 evidence-based recommendations based on the timing and triggers of the dizziness but recognizes that alternative diagnostic approaches exist, such as the STANDING protocol and nystagmus examination in combination with gait unsteadiness or the presence of vascular risk factors. As an overarching recommendation, (1) emergency clinicians should receive training in bedside physical examination techniques for patients with the acute vestibular syndrome (AVS; HINTS) and the diagnostic and therapeutic maneuvers for benign paroxysmal positional vertigo (BPPV; Dix-Hallpike test and Epley maneuver). To help distinguish central from peripheral causes in patients with the AVS, we recommend: (2) use HINTS (for clinicians trained in its use) in patients with nystagmus, (3) use finger rub to further aid in excluding stroke in patients with nystagmus, (4) use severity of gait unsteadiness in patients without nystagmus, (5) do not use brain computed tomography (CT), (6) do not use routine magnetic resonance imaging (MRI) as a first-line test if a clinician trained in HINTS is available, and (7) use MRI as a confirmatory test in patients with central or equivocal HINTS examinations. In patients with the spontaneous episodic vestibular syndrome: (8) search for symptoms or signs of cerebral ischemia, (9) do not use CT, and (10) use CT angiography or MRI angiography if there is concern for transient ischemic attack. In patients with the triggered (positional) episodic vestibular syndrome, (11) use the Dix-Hallpike test to diagnose posterior canal BPPV (pc-BPPV), (12) do not use CT, and (13) do not use MRI routinely, unless atypical clinical features are present. In patients diagnosed with vestibular neuritis, (14) consider short-term steroids as a treatment option. In patients diagnosed with pc-BPPV, (15) treat with the Epley maneuver. It is clear that as of 2023, when applied in routine practice by emergency clinicians without special training, HINTS testing is inaccurate, partly due to use in the wrong patients and partly due to issues with its interpretation. Most emergency physicians have not received training in use of HINTS. As such, it is not standard of care, either in the legal sense of that term ("what the average physician would do in similar circumstances") or in the common parlance sense ("the standard action typically used by physicians in routine practice").
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Affiliation(s)
- Jonathan A Edlow
- Department of Emergency Medicine, Harvard Medical School, Boston, Massachusetts, USA
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Christopher Carpenter
- Department of Emergency Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
- Department of Emergency Medicine, Washington University, St. Louis, Missouri, USA
| | - Murtaza Akhter
- Department of Emergency Medicine, Penn State School of Medicine, State College, Pennsylvania, USA
- Hershey Medical Center, State College, Pennsylvania, USA
| | - Danya Khoujah
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Department of Emergency Medicine, Adventhealth Tampa, Tampa, Florida, USA
| | - Evie Marcolini
- Department of Emergency Medicine, Geisel School of Medicine, Dartmouth, Hanover, New Hampshire, USA
- Department of Emergency Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - William J Meurer
- Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | | | - James G Naples
- Department of Emergency Medicine, Harvard Medical School, Boston, Massachusetts, USA
- Division of Otolaryngology-Head & Neck Surgery, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Robert Ohle
- Department of Emergency Medicine, Northern Ontario School of Medicine, Sudbury, Ontario, Canada
- Health Science North Research Institute, Sudbury, Ontario, Canada
- Department of Emergency Medicine, Health Sciences North, Sudbury, Ontario, Canada
| | - Rodney Omron
- Department of Emergency Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Emergency Medicine, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Sameer Sharif
- Division of Critical Care and Emergency Medicine, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Matt Siket
- Department of Emergency Medicine, Robert Larner College of Medicine at the University of Vermont, Burlington, Vermont, USA
- Department of Emergency Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont, USA
| | - Suneel Upadhye
- Emergency Medicine, Evidence and Impact (HEI), McMaster University, Burlington, Ontario, Canada
- Health Research Methods, Evidence and Impact (HEI), McMaster University, Burlington, Ontario, Canada
| | - Lucas Oliveira J E Silva
- Mayo Clinic, Rochester, Minnesota, USA
- Department of Emergency Medicine, Hospital de Clinicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
| | - Etta Sundberg
- COO Royal Oasis Pool and Spas, Las Vegas, Nevada, USA
| | - Karen Tartt
- Absinthe Brasserie & Bar, San Francisco, California, USA
- St. George Spirits, San Francisco, California, USA
| | - Simone Vanni
- Department of Emergency Medicine, University of Florence, Firenze, Italy
- Department of Emergency Medicine, University Hospital Careggi, Firenze, Italy
| | - David E Newman-Toker
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Fernanda Bellolio
- Mayo Clinic College of Medicine, Rochester, Minnesota, USA
- Department of Emergency Medicine, Mayo Clinic, Rochester, Minnesota, USA
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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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Picciotti PM, Anzivino R, Galli J, Franceschi F, Conti G, Simeoni B, Covino M. Clinical Evolution of Acute Vestibular Syndrome: Longitudinal Retrospective Analysis of Epidemiological Data and Prognostic Factors for Recovery. J Pers Med 2023; 13:jpm13030407. [PMID: 36983588 PMCID: PMC10059062 DOI: 10.3390/jpm13030407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 02/23/2023] [Accepted: 02/23/2023] [Indexed: 03/03/2023] Open
Abstract
We evaluated the clinical features of patients admitted to the ED with acute vertigo, verifying symptoms after one month and one year to establish epidemiological factors and predictors of resolution. We reviewed 233 records of patients admitted to ED for acute vertigo (125 F and 85 M, mean age 56.12 years). We analyzed the correlation between time of resolution (at one month and one year) and symptoms duration (subjective and/or objective vertigo, instability, cervical pain, audiological, neurological, and neurovegetative symptoms), comorbidities, and therapies, the result of the clinical and instrumental vestibular examination. Resolution of acute vertigo occurred in 81.1%, while persistence of vertigo one year after ED access was reported in 18.8%. There were 135 patients who recovered in one month. The presence of instability, auditory and neurovegetative symptoms, and neck pain represents a significant factor for recovery within one year. Age over 65 and a history of hypertension are associated with a worst recovery. Patients with spontaneous Nystagmus or positive HIT showed a significant difference in symptoms recovery within one month and one year. Presence of positional Nystagmus represents a positive prognostic factor. Our findings emphasize the importance of clinical evaluation of the acute vertigo, helping the clinicians to define central or peripheral diagnosis and predict the resolution of vertigo.
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Affiliation(s)
- Pasqualina M. Picciotti
- Department of Head and Neck, Otolaryngology Institute, Fondazione Policlinico Universitario A. Gemelli IRCCS Università Cattolica del Sacro Cuore, 00168 Rome, Italy
- Correspondence:
| | - Roberta Anzivino
- Otolaryngology Unit, Sensorineural Department, Di Venere Hospital, ASL BARI, 70131 Bari, Italy
| | - Jacopo Galli
- Department of Head and Neck, Otolaryngology Institute, Fondazione Policlinico Universitario A. Gemelli IRCCS Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Francesco Franceschi
- Department of Emergency Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Guido Conti
- Department of Head and Neck, Otolaryngology Institute, Fondazione Policlinico Universitario A. Gemelli IRCCS Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Benedetta Simeoni
- Department of Emergency Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Marcello Covino
- Department of Emergency Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS Università Cattolica del Sacro Cuore, 00168 Rome, Italy
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A radiomics feature-based machine learning models to detect brainstem infarction (RMEBI) may enable early diagnosis in non-contrast enhanced CT. Eur Radiol 2023; 33:1004-1014. [PMID: 36169689 DOI: 10.1007/s00330-022-09130-6] [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: 05/30/2022] [Revised: 07/21/2022] [Accepted: 08/24/2022] [Indexed: 02/03/2023]
Abstract
OBJECTIVES Magnetic resonance imaging has high sensitivity in detecting early brainstem infarction (EBI). However, MRI is not practical for all patients who present with possible stroke and would lead to delayed treatment. The detection rate of EBI on non-contrast computed tomography (NCCT) is currently very low. Thus, we aimed to develop and validate the radiomics feature-based machine learning models to detect EBI (RMEBIs) on NCCT. METHODS In this retrospective observational study, 355 participants from a multicentre multimodal database established by Huashan Hospital were randomly divided into two data sets: a training cohort (70%) and an internal validation cohort (30%). Fifty-seven participants from the Second Affiliated Hospital of Xuzhou Medical University were included as the external validation cohort. Brainstems were segmented by a radiologist committee on NCCT and 1781 radiomics features were automatically computed. After selecting the relevant features, 7 machine learning models were assessed in the training cohort to predict early brainstem infarction. Accuracy, sensitivity, specificity, positive predictive value, negative predictive value, F1-score, and the area under the receiver operating characteristic curve (AUC) were used to evaluate the performance of the prediction models. RESULTS The multilayer perceptron (MLP) RMEBI showed the best performance (AUC: 0.99 [95% CI: 0.96-1.00]) in the internal validation cohort. The AUC value in external validation cohort was 0.91 (95% CI: 0.82-0.98). CONCLUSIONS RMEBIs have the potential in routine clinical practice to enable accurate computer-assisted diagnoses of early brainstem infarction in patients with NCCT, which may have important clinical value in reducing therapeutic decision-making time. KEY POINTS • RMEBIs have the potential to enable accurate diagnoses of early brainstem infarction in patients with NCCT. • RMEBIs are suitable for various multidetector CT scanners. • The patient treatment decision-making time is shortened.
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Dahm MR, Cattanach W, Williams M, Basseal JM, Gleason K, Crock C. Communication of Diagnostic Uncertainty in Primary Care and Its Impact on Patient Experience: an Integrative Systematic Review. J Gen Intern Med 2023; 38:738-754. [PMID: 36127538 PMCID: PMC9971421 DOI: 10.1007/s11606-022-07768-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 08/10/2022] [Indexed: 10/14/2022]
Abstract
BACKGROUND Diagnostic uncertainty is a pervasive issue in primary care where patients often present with non-specific symptoms early in the disease process. Knowledge about how clinicians communicate diagnostic uncertainty to patients is crucial to prevent associated diagnostic errors. Yet, in-depth research on the interpersonal communication of diagnostic uncertainty has been limited. We conducted an integrative systematic literature review (PROSPERO CRD42020197624, unfunded) to investigate how primary care doctors communicate diagnostic uncertainty in interactions with patients and how patients experience their care in the face of uncertainty. METHODS We searched MEDLINE, PsycINFO, and Linguistics and Language Behaviour Abstracts (LLBA) from inception to December 2021 for MeSH and keywords related to 'communication', 'diagnosis', 'uncertainty' and 'primary care' environments and stakeholders (patients and doctors), and conducted additional handsearching. We included empirical primary care studies published in English on spoken communication of diagnostic uncertainty by doctors to patients. We assessed risk of bias with the QATSDD quality assessment tool and conducted thematic and content analysis to synthesise the results. RESULTS Inclusion criteria were met for 19 out of 1281 studies. Doctors used two main communication strategies to manage diagnostic uncertainty: (1) patient-centred communication strategies (e.g. use of empathy), and (2) diagnostic reasoning strategies (e.g. excluding serious diagnoses). Linguistically, diagnostic uncertainty was either disclosed explicitly or implicitly through diverse lexical and syntactical constructions, or not communicated (omission). Patients' experiences of care in response to the diverse communicative and linguistic strategies were mixed. Patient-centred approaches were generally regarded positively by patients. DISCUSSION Despite a small number of included studies, this is the first review to systematically catalogue the diverse communication and linguistic strategies to express diagnostic uncertainty in primary care. Health professionals should be aware of the diverse strategies used to express diagnostic uncertainty in practice and the value of combining patient-centred approaches with diagnostic reasoning strategies.
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Affiliation(s)
- Maria R Dahm
- Institute for Communication in Health Care (ICH), ANU College of Arts and Social Sciences, The Australian National University, Baldessin Precinct Building, 110 Ellery Crescent, Canberra, ACT 2600, Australia.
| | - William Cattanach
- ANU Medical School, ANU College of Health and Medicine, The Australian National University, Canberra, Australia
| | | | - Jocelyne M Basseal
- Discipline of Infectious Diseases & Immunology, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Kelly Gleason
- Johns Hopkins School of Nursing, Baltimore City, MD, USA
| | - Carmel Crock
- Royal Victorian Eye and Ear Hospital, Melbourne, Australia
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Gerlier C, Fels A, Vitaux H, Mousset C, Perugini A, Chatellier G, Ganansia O. Effectiveness and reliability of the four-step STANDING algorithm performed by interns and senior emergency physicians for predicting central causes of vertigo. Acad Emerg Med 2023; 30:487-500. [PMID: 36628557 DOI: 10.1111/acem.14659] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 12/20/2022] [Accepted: 01/06/2023] [Indexed: 01/12/2023]
Abstract
BACKGROUND For emergency physicians (EPs), acute vertigo is a challenging complaint and learning a reliable clinical approach is needed. STANDING is a four-step bedside algorithm that requires (1) identifying spontaneous nystagmus with Frenzel glasses or, alternatively, a positional nystagmus; (2) characterizing the nystagmus direction; (3) assessing the vestibuloocular reflex (head impulse test); and (4) assessing the gait. The objective was to determine its accuracy for diagnosing central vertigo when using by naïve examiners as such as interns and its agreement with senior EPs. METHODS This was a prospective 1-year diagnostic cohort study among patients with vertigo, vestibulovisual symptoms, or postural symptoms seen by 20 interns trained in the four-step examination. The algorithm was performed first by an intern and second by a senior EP and categorized as either worrisome when indicating a central diagnosis and benign or inconclusive when indicating a peripheral diagnosis. The reference test was diffusion-weighted brain magnetic resonance imaging. RESULTS Among 312 patients included, 57 had a central diagnosis including 33 ischemic strokes (10.5%). The main etiology was benign paroxysmal positional vertigo (32.7%). The likelihood ratios were 4.63 and 10.33 for a worrisome STANDING, 0.09 and 0.01 for a benign STANDING, and 0.21 and 0.35 for an inconclusive STANDING, for interns and senior EPs, respectively. The algorithm showed sensitivities of 84.8% (95% CI 75.6%-93.9%) and 89.8% (95% CI 82.1%-97.5%), negative predictive values of 96.2% (95% CI 93.7%-98.6%) and 97.5% (95% CI 95.5%-99.5%), specificities of 88.9% (95% CI 85.1%-92.8%) and 91.3% (95% CI 87.8%-94.8%), and positive predictive values of 64.1% (95% CI 53.5%-74.8%) and 70.7% (95% CI 60.4%-81.0%), respectively. The agreement between interns and senior EPs was very substantial (B-statistic coefficient: 0.77) and almost perfect for each step: (1) 0.87, (2) 0.98, (3) 0.95, and (4) 0.99. CONCLUSIONS With a single training session, the algorithm reached high accuracy and reliability for ruling out central causes of vertigo in the hands of both novices and experienced EPs. A future multicenter randomized controlled trial should further its impact on unnecessary neuroimaging use and patient's satisfaction.
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Affiliation(s)
- Camille Gerlier
- Department of Emergency, Paris Saint Joseph Hospital Group, Paris, France
| | - Audrey Fels
- Department of Clinical Research, Paris Saint Joseph Hospital Group, Paris, France
| | - Hélène Vitaux
- Department of Otolaryngology, Paris Saint Joseph Hospital Group, Paris, France
| | - Carole Mousset
- Department of Otolaryngology, Paris Saint Joseph Hospital Group, Paris, France
| | - Alberto Perugini
- Department of Emergency, Paris Saint Joseph Hospital Group, Paris, France
| | - Gilles Chatellier
- Department of Clinical Research, Paris Saint Joseph Hospital Group, Paris, France.,University of Paris-Cité, Paris, France
| | - Olivier Ganansia
- Department of Emergency, Paris Saint Joseph Hospital Group, Paris, France
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Wang H, Shi T, Shang Y, Chen X, Xu J, Geng Y. Case report: Spiller syndrome initially mimicking vestibular neuritis. Front Neurol 2023; 13:1072220. [PMID: 36698901 PMCID: PMC9868901 DOI: 10.3389/fneur.2022.1072220] [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: 10/17/2022] [Accepted: 12/14/2022] [Indexed: 01/11/2023] Open
Abstract
Spiller syndrome is a rare subtype of medial medullary infarction (MMI). Herein, we report on a patient with progressing stroke who presented with the initial features of acute peripheral vestibulopathy and MMI (Spiller syndrome), as confirmed by magnetic resonance imaging (MRI). A 42-year-old man experienced acute persistent vertigo with nausea, vomiting, and severe gait instability for 6 h before presenting to the emergency department. He exhibited spontaneous right-beating horizontal-torsional nystagmus that intensified on rightward gaze. The patient fell to the left side during the Romberg test. Cranial computed tomography (CT) performed immediately upon admission did not provide evidence for ischemia or hemorrhage of the brainstem and cerebellum; however, the symptoms underwent exacerbation 4 h after admission, manifesting as left-sided limb weakness and dysarthria, without dysphagia. Furthermore, bedside examination revealed difficulty in extending the tongue to the right, positive left Babinski's sign, and abnormal vibration and position sense in the paralyzed limb. Head impulse test recording revealed a normal gain in the vestibulo-ocular reflex, and numerous consistent covert corrective saccades were captured upon turning the head to the left side. Cranial MRI depicted an acute infarct confined to the right side of the medial medulla, which met the diagnostic criteria for Spiller syndrome. Our study underscores the importance of considering the possibility of a nucleus prepositus hypoglossi lesion even if the signs and symptoms support the diagnosis of peripheral lesions in patients with acute vestibular syndrome exhibiting vascular risk factors.
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Affiliation(s)
- Huiyuan Wang
- Department of Clinical Medicine, Bengbu Medical College, Bengbu, China.,Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, China
| | - Tianming Shi
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, China
| | - Yafei Shang
- Department of Clinical Medicine, Bengbu Medical College, Bengbu, China.,Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, China
| | - Xinyi Chen
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, China
| | - Jie Xu
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, China
| | - Yu Geng
- Department of Clinical Medicine, Bengbu Medical College, Bengbu, China.,Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, China
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Das S, Annam CS, Bakshi SS, Seepana R. Persistent positional perceptual dizziness in clinical practice: a scoping review. Neurol Sci 2023; 44:129-135. [PMID: 35994134 DOI: 10.1007/s10072-022-06353-9] [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: 01/03/2022] [Accepted: 08/15/2022] [Indexed: 01/10/2023]
Abstract
INTRODUCTION Dizziness is an important symptom presenting in routine practice and the life time prevalence ranges from 17 to 30%. Persistent positional perceptual dizziness (PPPD) is a common cause of chronic dizziness and has often been labeled as psychogenic dizziness in the past. DISCUSSION PPPD is diagnosed based on clinical criteria laid down by the Barany society. The vestibular function tests and imaging of the brain and the inner ear are often normal. Most of the patients have an underlying anxiety trait and most cases of PPPD arise following an attack of acute vertigo like Meniere's disease and vestibular neuritis. It is important to differentiate the condition from bilateral vestibulopathy. There is no role of vestibular sedative in the treatment of such condition. Vestibular rehabilitation therapy (VRT), cognitive behavioral therapy (CBT), and selective serotonin reuptake inhibitors (SSRI) like sertraline have shown benefits. However, long-term outcome is not known. CONCLUSION PPPD is a relatively new entity in the ever-expanding field of neurotology that requires a multimodality approach for effective management. The otologists and general physicians must identify the condition so that favorable outcome can be achieved. The long-term effects of treatment with CBT and VRT are not known. It is important to formulate standard guidelines for treatment. Further research is necessary to identify the role of endogenous biomarkers in the outcome of treatment.
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Affiliation(s)
- Soumyajit Das
- Department of ENT, All India Institute of Medical Sciences, Mangalagiri, Andhra Pradesh, 522503, India.
| | - Chandra Sekhar Annam
- Department of ENT, All India Institute of Medical Sciences, Mangalagiri, Andhra Pradesh, 522023, India
| | - Satvinder Singh Bakshi
- Department of ENT, All India Institute of Medical Sciences, Mangalagiri, Andhra Pradesh, 522023, India
| | - Ramesh Seepana
- Department of ENT, All India Institute of Medical Sciences, Mangalagiri, Andhra Pradesh, 522503, India
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Liu Y, Leng Y, Zhou R, Liu J, Wang H, Xia K, Liu B, Xiao H. Discrepancies of video head impulse test results in patients with idiopathic sudden sensorineural hearing loss with vertigo and vestibular neuritis. Front Neurosci 2023; 17:1102512. [PMID: 37139518 PMCID: PMC10150120 DOI: 10.3389/fnins.2023.1102512] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 03/13/2023] [Indexed: 05/05/2023] Open
Abstract
Objective Sudden sensorineural hearing loss with vertigo (SHLV) and vestibular neuritis (VN) remain frequent causes of acute vestibular syndrome (AVS). The aim of study was to compare the results of video head impulse test (vHIT) in patients with SHLV and VN. The characteristics of high-frequency vestibule-ocular reflex (VOR) and the differences of the pathophysiological mechanisms underlying these two AVS were explored. Methods Fifty-seven SHLV patients and 31 VN patients were enrolled. vHIT was conducted at the initial presentation. The VOR gains and occurrence of corrective saccades (CSs) of anterior, horizontal, and posterior semicircular canals (SCCs) in two groups were analyzed. Pathological vHIT results refer to impaired VOR gains and presence of CSs. Results In SHLV group, pathological vHIT results was most prevalent in the posterior SCC on the affected side (30/57, 52.63%), followed by horizontal (12/57, 21.05%) and anterior SCC (3/57, 5.26%). In VN group, pathological vHIT preferentially affected horizontal SCC (24/31, 77.42%), followed by anterior (10/31, 32.26%) and posterior SCC (9/31, 29.03%) on the affected side. As for anterior and horizontal SCC on the affected side, the incidences of pathological vHIT results in VN group were significantly higher than those in SHLV group (β = 2.905, p < 0.01; β = 2.183, p < 0.001). There were no significant differences in the incidence of pathological vHIT result in posterior SCC between two groups. Conclusion Comparison of vHIT results in patients with SHLV and VN revealed discrepancies in the pattern of SCCs impairments, which may be explained by different pathophysiological mechanisms underlying these two vestibular disorders presenting as AVS.
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Affiliation(s)
| | | | | | | | | | | | - Bo Liu
- *Correspondence: Bo Liu, ; Hongjun Xiao,
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Alfarghal M, Algarni MA, Sinha SK, Nagarajan A. VOR gain of lateral semicircular canal using video head impulse test in acute unilateral vestibular hypofunction: A systematic review. Front Neurol 2022; 13:948462. [PMID: 36570452 PMCID: PMC9773140 DOI: 10.3389/fneur.2022.948462] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 11/11/2022] [Indexed: 12/13/2022] Open
Abstract
Introduction Acute unilateral vestibular hypofunction is characterized by sudden onset of vertigo or dizziness, vomiting/nausea, gait instability, and nystagmus. This is commonly described as an acute vestibular syndrome and usually attributed to vestibular neuritis; however, up to 25% of acute vestibular syndrome is caused by a stroke of posterior circulations. The video head impulse test is a recent tool in the vestibular test battery that assesses the vestibule-ocular reflex by measuring the VOR gain and recording overt and covert saccades, these findings have been found to be helpful in the diagnosis of various vestibular disorders. Method A literature search was conducted in databases, including PubMed Central, PubMed, and Web of Science. All the articles that define video head impulse test (vHIT), acute vestibular hypofunction, and vestibular neuritis were considered for the preliminary search. No limits were placed on the date of publication. The searches were limited to studies with full-text availability, published in English, and including human subjects. Search words such as "head impulse test," "video head impulse test," "vestibular ocular reflex," "acute vestibular syndrome," "acute vestibular hypofunction," "vestibular neuritis," and "vHIT in central vestibular disorders" were entered into different databases in different combinations using boolean operators such as AND, OR, and NOT. Results Searches across different databases, including Web of Science, PubMed Central, and PubMed, resulted in a total of 1,790 articles. Title screening was done for all the articles. Out of the 1,790 articles, we found that 245 articles were related to vestibular hypofunction i.e., 1,545 articles were removed at this stage. A further 56 duplicate articles were removed. This led to a final screening of 189 articles. The exclusion criteria included unavailability of full text, studies reported in languages other than English, case reports, reviews, and articles including participants having other comorbid conditions. This final screening led to 133 articles being excluded, which led to the full-text screening of 56 articles. After screening the full-text articles as per the eligibility criteria, 21 articles were found to be eligible for the systematic review. Among the remaining studies, six articles were excluded due to different specific reasons. A total of 15 articles were included in this systematic review. The mean VOR gain for the patients with vestibular neuritis was 0.48 ± 0.14 for the ipsilesional ear, whereas the mean VOR gain was > 0.80 in the contralesional ear for all the patients with acute vestibular neuritis. In patients with PICA lesions, the VOR gain for the ipsilesional ear was 0.90 (range 0.87-0.94) and for the contralesional ear was 0.88 (range 0.84-0.93). In patients with AICA lesions, the mean VOR gain was variable. Based on the above mean VOR gain findings, the authors propose the following adjective description scale of VOR of the lateral canal using vHIT: normal VOR gain above 0.80, mild VOR gain loss for 0.70-0.79, moderate loss for 0.69-0.4, severe loss for 0.39-0.2, and profound loss for < 0.2.
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Affiliation(s)
- Mohamad Alfarghal
- Otorhinolaryngology - Head and Neck Section, Surgery Department, King Abdulaziz Medical City, Jeddah, Saudi Arabia,*Correspondence: Mohamad Alfarghal
| | - Mohammed Abdullah Algarni
- Otorhinolaryngology - Head and Neck Section, Surgery Department, King Abdulaziz Medical City, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia
| | - Sujeet Kumar Sinha
- Department of Audiology, All India Institute of Speech and Hearing, Mysore, India
| | - Aishwarya Nagarajan
- Department of Audiology, All India Institute of Speech and Hearing, Mysore, India
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Vanni S, Nazerian P, Pecci R, Pepe G, Pavellini A, Casula C, de Curtis E, Ronchetti M, Vannucchi P, Bartolucci M, Vanni S, Casula C, Soldati V, Matteucci ML, Gargano U, Mirenda F, Nazerian P, Ottaviani M, Rocchetti M, Caviglioli C, Pavellini A, Vannucchi P, Pecci R, Pepe G, de Curtis E, Baldini A, Magazzini S, Sampieri A, Bartolucci M. Timing for nystagmus evaluation by STANDING or HINTS in patients with vertigo/dizziness in the emergency department. Acad Emerg Med 2022; 30:592-594. [PMID: 36448574 DOI: 10.1111/acem.14635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/18/2022] [Accepted: 11/27/2022] [Indexed: 12/02/2022]
Affiliation(s)
- Simone Vanni
- Department of Emergency Medicine, Azienda USL Toscana Centro, Empoli, Italy
| | - Peiman Nazerian
- Department of Emergency Medicine, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
| | - Rudi Pecci
- Audiology Clinic, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
| | - Giuseppe Pepe
- Department of Emergency Medicine, Azienda USL Nord-Ovest, Viareggio, Italy
| | - Andrea Pavellini
- Department of Emergency Medicine, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
| | - Claudia Casula
- Department of Emergency Medicine, Azienda USL Toscana Centro, Empoli, Italy
| | - Ersilia de Curtis
- Department of Emergency Medicine, Azienda USL Toscana Centro, Prato, Italy
| | - Mattia Ronchetti
- Department of Emergency Medicine, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
| | - Paolo Vannucchi
- Audiology Clinic, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
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Kepka S, Zarca K, Lersy F, Moris M, Godet J, Deur J, Stoessel M, Muller J, Le Borgne P, Baloglu S, Fleury MC, Anheim M, Bilbault P, Bierry G, Durand Zaleski I, Kremer S. MRI dedicated to the emergency department for diplopia or dizziness: a cost-effectiveness analysis. Eur Radiol 2022; 32:7344-7353. [PMID: 35554653 DOI: 10.1007/s00330-022-08791-7] [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: 10/27/2021] [Revised: 03/29/2022] [Accepted: 04/03/2022] [Indexed: 01/03/2023]
Abstract
OBJECTIVES The purpose of this study was to compare the costs and organizational benefits of diagnostic workup without and with MRI dedicated to the ED. METHODS We conducted a prospective observational uncontrolled before-after study in one ED of a university hospital in France from July 1, 2018, and January 3, 2020. We included all consecutive patients presenting with dizziness or diplopia. The main outcomes were the clinical decision time of ED physicians and the total costs for each strategy. Outcomes were compared using propensity score with inverse probability weighting in the 2 arms and an incremental cost-effectiveness ratio (ICER) was calculated. RESULTS Among the 199 patients during the "before" period (average age: 60.4 years ± 17.6): 112 men (57%), and 181 during the "after" period (average age, 54.8 years ± 18.5): 107 men (59%), the average costs were €2701 (95% CI 1918; 3704) and €2389 (95% CI: €1627; 3280) per patient, respectively. The average time to clinical decision was 9.8 h (95% CI: 8.9 10.7) in the group "before" and 7.7 h (95% CI: 7.1; 8.4) in the group "after" (ICER: €151 saved for a reduction of 1 h in clinical decision time). The probabilistic sensitivity analysis estimated a 71% chance that the MRI dedicated to ED was dominant (less costly and more effective). CONCLUSION Easy access to MRI in the ED for posterior circulation stroke-like symptoms must be considered a relevant approach to help physicians for an appropriate and rapid diagnostic with reduction of costs. TRIAL REGISTRATION NCT03660852 KEY POINTS: • A dedicated MRI in the ED for diplopia or dizziness may be considered an efficient strategy improving diagnostic performance, reducing physicians' decision time, and decreasing hospital costs. • This strategy supports clinical decision-making with early treatment and management of patients with posterior circulation-like symptoms in the ED. • There is 71% chance that the MRI dedicated to ED was dominant (less costly and more effective) compared with a strategy without dedicated MRI.
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Affiliation(s)
- Sabrina Kepka
- Emergency Department, Hôpitaux Universitaires de Strasbourg, 1 place de l'hopital, CHRU Strasbourg - Nouvel hôpital civil, 67091, Strasbourg, France. .,URCEco, Hôtel Dieu, AP-HP, 1 Place du Parvis Notre Dame, 75004, Paris, France. .,IMAGEs laboratory ICUBE UMR 7357 CNRS, 300 Bd Sébastien Brant, 67400, Illkirch-Graffenstaden, France.
| | - Kevin Zarca
- URCEco, Hôtel Dieu, AP-HP, 1 Place du Parvis Notre Dame, 75004, Paris, France
| | - François Lersy
- Imaging Department 2, Hôpitaux Universitaires de Strasbourg, 1 avenue Molière, 67200, Strasbourg, France
| | - Mylène Moris
- Emergency Department, Hôpitaux Universitaires de Strasbourg, 1 place de l'hopital, CHRU Strasbourg - Nouvel hôpital civil, 67091, Strasbourg, France
| | - Julien Godet
- Public Health Department, Hôpitaux Universitaires de Strasbourg, 1 place de l'hôpital, CHRU of Strasbourg, 67091, Strasbourg, France
| | - Jeanne Deur
- Imaging Department 2, Hôpitaux Universitaires de Strasbourg, 1 avenue Molière, 67200, Strasbourg, France
| | - Marie Stoessel
- Imaging Department 2, Hôpitaux Universitaires de Strasbourg, 1 avenue Molière, 67200, Strasbourg, France
| | - Joris Muller
- Public Health Department, Hôpitaux Universitaires de Strasbourg, 1 place de l'hôpital, CHRU of Strasbourg, 67091, Strasbourg, France
| | - Pierrick Le Borgne
- Emergency Department, Hôpitaux Universitaires de Strasbourg, 1 place de l'hopital, CHRU Strasbourg - Nouvel hôpital civil, 67091, Strasbourg, France.,UMR 1260, INSERM/Université de Strasbourg CRBS, 1 Rue Eugene Boeckel, 67000, Strasbourg, France
| | - Seyyid Baloglu
- Imaging Department 2, Hôpitaux Universitaires de Strasbourg, 1 avenue Molière, 67200, Strasbourg, France
| | - Marie Céline Fleury
- Neurology Department, Hôpitaux Universitaires de Strasbourg, 1 avenue Molière, 67200, Strasbourg, France
| | - Mathieu Anheim
- Neurology Department, Hôpitaux Universitaires de Strasbourg, 1 avenue Molière, 67200, Strasbourg, France.,Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM-U964/CNRS-UMR7104/Université de Strasbourg, Illkirch, France
| | - Pascal Bilbault
- Emergency Department, Hôpitaux Universitaires de Strasbourg, 1 place de l'hopital, CHRU Strasbourg - Nouvel hôpital civil, 67091, Strasbourg, France.,UMR 1260, INSERM/Université de Strasbourg CRBS, 1 Rue Eugene Boeckel, 67000, Strasbourg, France
| | - Guillaume Bierry
- Imaging Department 2, Hôpitaux Universitaires de Strasbourg, 1 avenue Molière, 67200, Strasbourg, France.,Engineering Science, Computer Science and Imaging Laboratory (ICube), Integrative Multimodal Imaging in Healthcare, UMR 7357, University of Strasbourg-CNRS, Strasbourg, France
| | - Isabelle Durand Zaleski
- URCEco, Hôtel Dieu, AP-HP, 1 Place du Parvis Notre Dame, 75004, Paris, France.,Univ Paris Est Creteil (UPEC), Université de Paris, CRESS, INSERM, INRA, 74 rue Marcel Cachin, 93017, Bobigny, France
| | - Stéphane Kremer
- Imaging Department 2, Hôpitaux Universitaires de Strasbourg, 1 avenue Molière, 67200, Strasbourg, France.,Engineering Science, Computer Science and Imaging Laboratory (ICube), Integrative Multimodal Imaging in Healthcare, UMR 7357, University of Strasbourg-CNRS, Strasbourg, France
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Editorial regarding Byworth article on HINTS exam use by emergency physicians. CAN J EMERG MED 2022; 24:679-681. [DOI: 10.1007/s43678-022-00402-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 10/13/2022] [Indexed: 11/26/2022]
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Kattah JC, Martinez C, Zalazar G, Batuecas Á, Lemos J, Carmona S. Role of incubitus truncal ataxia, and equivalent standing grade 3 ataxia in the diagnosis of central acute vestibular syndrome. J Neurol Sci 2022; 441:120374. [PMID: 36063733 DOI: 10.1016/j.jns.2022.120374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 07/03/2022] [Accepted: 07/31/2022] [Indexed: 12/24/2022]
Abstract
INTRODUCTION AND OBJECTIVES acute vestibular syndrome is a diagnostic challenge, requiring a rapid and precise diagnosis to take therapeutic actions. Truncal ataxia, inability to sit still, and Babinski flexor dysergy were evaluated. Material anf methods: 52 patients with central pathology (stroke in aica and pica territory) and vestibular neuritis were prospectively studied. MRI of the brain was used as the gold standard. RESULTS A combination of grade 2-3 ataxia to differentiate patients with vestibular neuritis from patients with stroke resulted in a 92% sensitivity (95% CI 79-100%), a 67% specificity (95% CI 47-86%). Flexion asynergy had a 70% sensitivity (95% CI 47-92%), and an 88% specificity (95% CI 69-100%). The inability to sit still correlated well with truncal ataxia. CONCLUSIONS vestibulospinal signs are useful in the differential diagnosis of acute vestibular syndromes, and the inability to sit is a good substitute for truncal ataxia when it cannot be evaluated.
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Affiliation(s)
- Jorge C Kattah
- Professor and Head of Neurology and Neurosurgery, University of Illinois College of Medicine, Peoria. IL, United States
| | | | - Guillermo Zalazar
- Neurologist, Hospital Central Dr. Ramón Carrillo, San Luis, Argentina.
| | - Ángel Batuecas
- Unidad de Otoneurología, Servicio de Otorrinolaringología y Patología Máxilofacial, Hospital Universitario de Salamanca, Salamanca, Spain
| | - Joao Lemos
- Department of Neurology, Coimbra University Hospital Centre, Coimbra, Portugal
| | - Sergio Carmona
- Neuro-otologist, Fundación San Lucas para la Neurociencia, Rosario, Santa Fe, Argentina
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Qiu T, Dai X, Xu X, Zhang G, Huang L, Gong Q. A prospective study on the application of HINTS in distinguishing the localization of acute vestibular syndrome. BMC Neurol 2022; 22:378. [PMID: 36199036 PMCID: PMC9533484 DOI: 10.1186/s12883-022-02904-x] [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: 07/06/2022] [Accepted: 09/26/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Acute vestibular syndrome (AVS) is a common clinical syndrome in neurology clinics and emergency department. Canonical standard for AVS diagnosis requires the presence of persistent vertigo for more than 24 h. HINTS (head impulse-nystagmus-test of skew) is an emerging scheme in the diagnosis of AVS. In this prospective study, we evaluated the specificity and sensitivity of HINTS in distinguishing between central and peripheral AVS. METHODS A cohort of 239 cases with complete clinical record was recruited in the study. All patients completed emergency brain CT examination to exclude hemorrhagic stroke. HINTS examination was conducted to distinguish between central AVS and peripheral AVS, and all patients completed head MRI, BAEP and vestibular function examinations within one week. Patients diagnosed as central AVS were subject to angiography (CTA/MRA/DSA), and patients with peripheral AVS were considered for a 3-month follow-up to correct the initial diagnosis. RESULTS Patients with central AVS were associated with an elder age, higher incidences of hypertension, atrial fibrillation, family history of stroke and previous history of stroke. Posterior circulation cerebral infarction, vestibular migraine and cerebellitis were the dominant diseases associated with central AVS. The sensitivities of HIT, GE, and TS in the diagnosis of central AVS were 73.5%, 61.2%, and 26.5%, and the specificities were 97.9%, 92.6%, and 93.2% respectively. CONCLUSIONS The sensitivity of HINTS for central AVS diagnosis is 89.8% and the specificity is 84.2%. HINTS is an easy-to-operate, low-cost, high-sensitivity and specific examination technique, which is practical in neurology outpatient clinics and emergency departments.
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Affiliation(s)
- Tao Qiu
- Department of Neurology, Zigong First People's Hospital, No. 42, shangyihao 1st branch road, Ziliujing, Zigong, 643000, Sichuan, China
| | - Xiaoyan Dai
- Outpatient department, Zigong First People's Hospital, No. 42, Shangyihao 1st Branch Road, Ziliujing District, Zigong, 643000, Sichuan, China
| | - Xiaoya Xu
- Department of Neurology, Zigong First People's Hospital, No. 42, shangyihao 1st branch road, Ziliujing, Zigong, 643000, Sichuan, China
| | - Guiqin Zhang
- Department of Neurology, Zigong First People's Hospital, No. 42, shangyihao 1st branch road, Ziliujing, Zigong, 643000, Sichuan, China
| | - Linming Huang
- Department of Neurology, Zigong First People's Hospital, No. 42, shangyihao 1st branch road, Ziliujing, Zigong, 643000, Sichuan, China
| | - Qingping Gong
- Department of Neurology, Zigong First People's Hospital, No. 42, shangyihao 1st branch road, Ziliujing, Zigong, 643000, Sichuan, China.
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Wang W, Ji J, Wang C, Wang Y. Topography and etiologies of cerebellar infarcts presenting as isolated acute vestibular syndrome. Neurol Sci 2022; 43:5969-5976. [DOI: 10.1007/s10072-022-06249-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 06/28/2022] [Indexed: 11/28/2022]
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45
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Bery AK, Chang TP. Positive horizontal-canal head impulse test is not a benign sign for acute vestibular syndrome with hearing loss. Front Neurol 2022; 13:941909. [PMID: 36226090 PMCID: PMC9549073 DOI: 10.3389/fneur.2022.941909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 09/06/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundDiagnosis of acute vestibular syndrome (AVS) with hearing loss is challenging because the leading vascular cause—AICA territory stroke—can appear benign on head impulse testing. We evaluated the diagnostic utility of various bedside oculomotor tests to discriminate imaging-positive and imaging-negative cases of AVS plus hearing loss.MethodWe reviewed 13 consecutive inpatients with AVS and acute unilateral hearing loss. We compared neurologic findings, bedside and video head impulse testing (bHIT, vHIT), and other vestibular signs (including nystagmus, skew deviation, and positional testing) between MRI+ and MRI– cases.ResultsFive of thirteen patients had a lateral pontine lesion (i.e., MRI+); eight did not (i.e., MRI–). Horizontal-canal head impulse test showed ipsilateral vestibular loss in all five MRI+ patients but only in three MRI– patients. The ipsilesional VOR gains of horizontal-canal vHIT were significantly lower in the MRI+ than the MRI– group (0.56 ± 0.11 vs. 0.87 ± 0.24, p = 0.03). All 5 MRI+ patients had horizontal spontaneous nystagmus beating away from the lesion (5/5). One patient (1/5) had direction-changing nystagmus with gaze. Two had skew deviation (2/5). Among the 8 MRI– patients, one (1/8) presented as unilateral vestibulopathy, four (4/8) had positional nystagmus and three (3/8) had isolated posterior canal hypofunction.ConclusionThe horizontal-canal head impulse test poorly discriminates central and peripheral lesions when hearing loss accompanies AVS. Paradoxically, a lateral pontine lesion usually mimics unilateral peripheral vestibulopathy. By contrast, patients with peripheral lesions usually present with positional nystagmus or isolated posterior canal impairment, risking misdiagnosis as central vestibulopathy.
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Affiliation(s)
- Anand K. Bery
- Division of Neurology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Tzu-Pu Chang
- Department of Neurology/Neuro-Medical Scientific Center, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, Taiwan
- Department of Neurology, School of Medicine, Tzu Chi University, Hualien, Taiwan
- *Correspondence: Tzu-Pu Chang
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Byworth M, Johns P, Pardhan A, Srivastava K, Sharma M. Factors influencing HINTS exam usage by Canadian Emergency Medicine Physicians. CAN J EMERG MED 2022; 24:710-718. [DOI: 10.1007/s43678-022-00365-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 07/20/2022] [Indexed: 11/30/2022]
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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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Korda A, Wimmer W, Wyss T, Michailidou E, Zamaro E, Wagner F, Caversaccio MD, Mantokoudis G. Artificial intelligence for early stroke diagnosis in acute vestibular syndrome. Front Neurol 2022; 13:919777. [PMID: 36158956 PMCID: PMC9492879 DOI: 10.3389/fneur.2022.919777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 08/15/2022] [Indexed: 11/13/2022] Open
Abstract
Objective Measuring the Vestibular-Ocular-Reflex (VOR) gains with the video head impulse test (vHIT) allows for accurate discrimination between peripheral and central causes of acute vestibular syndrome (AVS). In this study, we sought to investigate whether the accuracy of artificial intelligence (AI) based vestibular stroke classification applied in unprocessed vHIT data is comparable to VOR gain classification. Methods We performed a prospective study from July 2015 until April 2020 on all patients presenting at the emergency department (ED) with signs of an AVS. The patients underwent vHIT followed by a delayed MRI, which served as a gold standard for stroke confirmation. The MRI ground truth labels were then applied to train a recurrent neural network (long short-term memory architecture) that used eye- and head velocity time series extracted from the vHIT examinations. Results We assessed 57 AVS patients, 39 acute unilateral vestibulopathy patients (AUVP) and 18 stroke patients. The overall sensitivity, specificity and accuracy for detecting stroke with a VOR gain cut-off of 0.57 was 88.8, 92.3, and 91.2%, respectively. The trained neural network was able to classify strokes with a sensitivity of 87.7%, a specificity of 88.4%, and an accuracy of 87.9% based on the unprocessed vHIT data. The accuracy of these two methods was not significantly different (p = 0.09). Conclusion AI can accurately diagnose a vestibular stroke by using unprocessed vHIT time series. The quantification of eye- and head movements with the use of machine learning and AI can serve in the future for an automated diagnosis in ED patients with acute dizziness. The application of different neural network architectures can potentially further improve performance and enable direct inference from raw video recordings.
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Affiliation(s)
- Athanasia Korda
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Wilhelm Wimmer
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
- Hearing Research Laboratory, ARTORG Center, University of Bern, Bern, Switzerland
| | - Thomas Wyss
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Efterpi Michailidou
- 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
- University Institute of Diagnostic and Interventional Neuroradiology, 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
| | - Georgios Mantokoudis
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
- *Correspondence: Georgios Mantokoudis
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Deng Y, Zhang L, Zhang R, Duan J, Huang J, Qiu D. Clinical Features Differ Between Patients With Vertigo Attack Only and Weakness Attack Accompanying Vertigo Before Vertebrobasilar Stroke: A Retrospective Study. Front Neurol 2022; 13:928902. [PMID: 35968280 PMCID: PMC9363826 DOI: 10.3389/fneur.2022.928902] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/22/2022] [Indexed: 11/15/2022] Open
Abstract
Objective To determine the different clinical features of patients with vertigo attacks alone and of those with weakness accompanying vertigo attacks before the vertebrobasilar ischemic stroke. Methods In this 4-year retrospective study, we manually screened the medical records of 209 patients, hospitalized with vertigo attack as the main complaint who were finally diagnosed with acute vertebrobasilar ischemic stroke. Patients were divided into two groups according to their symptoms: patients who only experienced vertigo attacks prior to the vertebrobasilar stroke (VO group) and patients who had both vertigo and weakness attacks (VW group) prior to the stroke. Clinical parameters, such as infarction site and volume, relative risk factors, ABCD2 score, and medical intervention, were compared between the two groups. Results The prevalence of hypertension was higher in the Vertigo attacks only (VO) group (42.2 vs. 29.0%, p < 0.05). The total cerebral infarction volume in the VO group was larger than the Vertigo and weakness attacks (VW) group (4.44 vs. 2.12 cm3, p < 0.05). Additionally, the cerebellum was more likely to be affected in the VO group. In contrast, patients in the VW group had higher carotid stenosis (14.2 vs. 27.2%, p < 0.05) and ABCD2 score (2.1 ± 1.2 vs. 3.6 ± 1.5, p = 0.02). The percentage of patients with medullary infarctions also increased in the VW group. Vertigo attack events occurred more frequently in the VW group (median 2.4 vs. 4.3, p < 0.04). We also found that the patients in the VW group were more likely to seek medical intervention after vertigo. Conclusions Clinical parameters, such as infarction location, relative risk factors, and ABCD2 score, differed between patients with vertigo symptoms with or without weakness attacks. These findings highlight the different clinical features of patients with vertigo attack only and those with weakness attacks accompanying vertigo prior to vertebrobasilar ischemic stroke.
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Affiliation(s)
- Yalan Deng
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, Laboratory of Structural Biology, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Lei Zhang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Rongsen Zhang
- Department of Ultrasonography, Second Xiangya Hospital, Central South University, Changsha, China
| | - Jingfeng Duan
- Department of Neurology, Third Hospital of Changsha, Changsha, China
| | - Jiabing Huang
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
- *Correspondence: Jiabing Huang
| | - Dongxu Qiu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- Dongxu Qiu
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50
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Shah VP, Oliveira J E Silva L, Farah W, Seisa M, Kara Balla A, Christensen A, Farah M, Hasan B, Bellolio F, Murad MH. Diagnostic accuracy of neuroimaging in emergency department patients with acute vertigo or dizziness: A systematic review and meta-analysis for the Guidelines for Reasonable and Appropriate Care in the Emergency Department. Acad Emerg Med 2022; 30:517-530. [PMID: 35876220 DOI: 10.1111/acem.14561] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/02/2022] [Accepted: 07/06/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Patients presenting to the emergency department (ED) with acute vertigo or dizziness represent a diagnostic challenge. Neuroimaging has variable indications and yield. We aimed to conduct a systematic review and meta-analysis of the diagnostic test accuracy of neuroimaging for patients presenting with acute vertigo or dizziness. METHODS An electronic search was designed following patient-intervention-control-outcome (PICO) question, (P) adult patients with acute vertigo or dizziness presenting to the ED; (I) Neuroimaging including Computed tomography (CT), CT Angiogram (CTA), Magnetic Resonance Imaging (MRI), Magnetic Resonance Angiogram (MRA), and Ultrasound (US); (C) MRI/clinical gold standard; (O) central causes (stroke, hemorrhage, tumor, others) versus peripheral causes of symptoms. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed. Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) was used to assess certainty of evidence in pooled estimates. RESULTS We included studies that reported diagnostic test accuracy. Articles were assessed in duplicated. From 6,309 titles, 460 articles were retrieved, and 12 included. Non-contrast CT scan: 6 studies, 771 patients, pooled sensitivity 28.5% (95%CI 14.4-48.5%, moderate certainty) and specificity 98.9% (95%CI 93.4-99.8%, moderate certainty). MRI: 5 studies, 943 patients, sensitivity 79.8% (CI 71.4-86.2%, high certainty) and specificity 98.8% (CI 96.2-100%, high certainty). CTA: 1 study, 153 patients, sensitivity 14.3% (CI 1.8-42.8%) and specificity 97.7% (CI 93.8-99.6%). CT had higher sensitivity than CTA (21.4% and 14.3%) for central etiology. MRA: 1 study, 24 patients, sensitivity 60.0% (CI 26.2-87.8%) and specificity 92.9% (CI 66.1-99.8%). US: 3 studies, 258 patients, sensitivity ranged from 30-53.6%, specificity from 94.9-100%. CONCLUSION Non-contrast CT has very low sensitivity and MRI will miss approximately one in five patients with stroke if imaging is obtained early after symptom onset. Neuroimaging should not be used as the only tool for ruling out stroke and other central causes in patients with acute dizziness or vertigo presenting to the ED.
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Affiliation(s)
- Vishal Paresh Shah
- Evidence-Based Practice Center, Mayo Clinic, Rochester, MN, United States
| | - Lucas Oliveira J E Silva
- Department of Emergency Medicine, Mayo Clinic, Rochester, MN, United States.,Department of Emergency Medicine, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Wigdan Farah
- Evidence-Based Practice Center, Mayo Clinic, Rochester, MN, United States
| | - Mohamad Seisa
- Evidence-Based Practice Center, Mayo Clinic, Rochester, MN, United States
| | - Abdalla Kara Balla
- Evidence-Based Practice Center, Mayo Clinic, Rochester, MN, United States
| | - April Christensen
- Department of Medicine, Division of Community Internal Medicine, Mayo Clinic, Rochester, MN, United States
| | - Magdoleen Farah
- Evidence-Based Practice Center, Mayo Clinic, Rochester, MN, United States
| | - Bashar Hasan
- Evidence-Based Practice Center, Mayo Clinic, Rochester, MN, United States
| | - Fernanda Bellolio
- Department of Emergency Medicine, Mayo Clinic, Rochester, MN, United States
| | - M Hassan Murad
- Evidence-Based Practice Center, Mayo Clinic, Rochester, MN, United States
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