Dataset Information

Los Angeles Motor Scale to Identify Large Vessel Occlusion: Prehospital Validation and Comparison With Other Screens.

ABSTRACT: BACKGROUND AND PURPOSE:Prehospital scales have been developed to identify patients with acute cerebral ischemia (ACI) because of large vessel occlusion (LVO) for direct routing to Comprehensive Stroke Centers (CSCs), but few have been validated in the prehospital setting, and their impact on routing of patients with intracranial hemorrhage has not been delineated. The purpose of this study was to validate the Los Angeles Motor Scale (LAMS) for LVO and CSC-appropriate (LVO ACI and intracranial hemorrhage patients) recognition and compare the LAMS to other scales. METHODS:The performance of the LAMS, administered prehospital by paramedics to consecutive ambulance trial patients, was assessed in identifying (1) LVOs among all patients with ACI and (2) CSC-appropriate patients among all suspected strokes. Additionally, the LAMS administered postarrival was compared concurrently with 6 other scales proposed for paramedic use and the full National Institutes of Health Stroke Scale. RESULTS:Among 94 patients, age was 70 (±13) and 49% female. Final diagnoses were ACI in 76% (because of LVO in 48% and non-LVO in 28%), intracranial hemorrhage in 19%, and neurovascular mimic in 5%. The LAMS administered by paramedics in the field performed moderately well in identifying LVO among patients with ACI (C statistic, 0.79; accuracy, 0.72) and CSC-appropriate among all suspected stroke transports (C statistic, 0.80; accuracy, 0.72). When concurrently performed in the emergency department postarrival, the LAMS showed comparable or better accuracy versus the 7 comparator scales, for LVO among ACI (accuracies LAMS, 0.70; other scales, 0.62-0.68) and CSC-appropriate (accuracies LAMS, 0.73; other scales, 0.56-0.73). CONCLUSIONS:The LAMS performed in the field by paramedics identifies LVO and CSC-appropriate patients with good accuracy. The LAMS performs comparably or better than more extended prehospital scales and the full National Institutes of Health Stroke Scale.

SUBMITTER: Noorian AR

PROVIDER: S-EPMC5829024 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature

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Los Angeles Motor Scale to Identify Large Vessel Occlusion: Prehospital Validation and Comparison With Other Screens.

Noorian Ali Reza AR Sanossian Nerses N Shkirkova Kristina K Liebeskind David S DS Eckstein Marc M Stratton Samuel J SJ Pratt Franklin D FD Conwit Robin R Chatfield Fiona F Sharma Latisha K LK Restrepo Lucas L Valdes-Sueiras Miguel M Kim-Tenser May M Starkman Sidney S Saver Jeffrey L JL

Stroke 20180219 3

<h4>Background and purpose</h4>Prehospital scales have been developed to identify patients with acute cerebral ischemia (ACI) because of large vessel occlusion (LVO) for direct routing to Comprehensive Stroke Centers (CSCs), but few have been validated in the prehospital setting, and their impact on routing of patients with intracranial hemorrhage has not been delineated. The purpose of this study was to validate the Los Angeles Motor Scale (LAMS) for LVO and CSC-appropriate (LVO ACI and intracr ...[more]

PMID: 29459391

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Project description:Background and objectivesEndovascular thrombectomy (EVT) is standard treatment for anterior large vessel occlusion stroke (LVO-a stroke). Prehospital diagnosis of LVO-a stroke would reduce time to EVT by allowing direct transportation to an EVT-capable hospital. We aim to evaluate the diagnostic accuracy of dry electrode EEG for the detection of LVO-a stroke in the prehospital setting.MethodsELECTRA-STROKE was an investigator-initiated, prospective, multicenter, diagnostic study, performed in the prehospital setting. Adult patients were eligible if they had suspected stroke (as assessed by the attending ambulance nurse) and symptom onset <24 hours. A single dry electrode EEG recording (8 electrodes) was performed by ambulance personnel. Primary endpoint was the diagnostic accuracy of the theta/alpha frequency ratio for LVO-a stroke (intracranial ICA, A1, M1, or proximal M2 occlusion) detection among patients with EEG data of sufficient quality, expressed as the area under the receiver operating characteristic curve (AUC). Secondary endpoints were diagnostic accuracies of other EEG features quantifying frequency band power and the pairwise derived Brain Symmetry Index. Neuroimaging was assessed by a neuroradiologist blinded to EEG results.ResultsBetween August 2020 and September 2022, 311 patients were included. The median EEG duration time was 151 (interquartile range [IQR] 151-152) seconds. For 212/311 (68%) patients, EEG data were of sufficient quality for analysis. The median age was 74 (IQR 66-81) years, 90/212 (42%) were women, and the median baseline NIH Stroke Scale was 1 (IQR 0-4). Six (3%) patients had an LVO-a stroke, 109/212 (51%) had a non-LVO-a ischemic stroke, 32/212 (15%) had a transient ischemic attack, 8/212 (4%) had a hemorrhagic stroke, and 57/212 (27%) had a stroke mimic. AUC of the theta/alpha ratio was 0.80 (95% CI 0.58-1.00). Of the secondary endpoints, the pairwise derived Brain Symmetry Index in the delta frequency band had the highest diagnostic accuracy (AUC 0.91 [95% CI 0.73-1.00], sensitivity 80% [95% CI 38%-96%], specificity 93% [95% CI 88%-96%], positive likelihood ratio 11.0 [95% CI 5.5-21.7]).DiscussionThe data from this study suggest that dry electrode EEG has the potential to detect LVO-a stroke among patients with suspected stroke in the prehospital setting. Toward future implementation of EEG in prehospital stroke care, EEG data quality needs to be improved.Trial registration informationClinicalTrials.gov identifier: NCT03699397.Classification of evidenceThis study provides Class II evidence that prehospital dry electrode scalp EEG accurately detects LVO-a stroke among patients with suspected acute stroke.

Project description:BackgroundIn the context of demographic aging, active aging must be encouraged. In addition, the increase in life expectancy requires specific care for the elderly. Therefore, it is important to ensure appropriate training and education to caregivers. Educational institutions put value in positively influencing the attitudes and behaviours towards elderly people in order to ensure the quality of patient care in the future. Questionnaires are often used to assess attitudes. Among them, the University of California, Los Angeles Geriatrics Attitudes Scale (UCLA-GAS) was developed to assess attitudes towards older people and caring for older patients. This scale has been used to evaluate attitude of healthcare professionals and students including undergraduate physiotherapy students. To our knowledge, there is no scale that assesses the same concept in French. Therefore, this study aimed to translate and adapt the UCLA-GAS into French and to test its psychometric properties.MethodsWe conducted this study in two phases. First, we translated and adapted the UCLA-GAS from English into French following the five recommended stages of cross-cultural adaptation. Second, we validated the French version of the scale with undergraduate physiotherapy students. One hundred nineteen students participated from the first to the third academic years. We estimated reliability and validity of the scale. We performed correlation analyses between the French version of the UCLA-GAS (UCLA-GAS-F) with the Aging Stereotypes and Exercise Scale (ASES) and the Attitudes to Aging Questionnaire (AAQ).ResultsThe scale was translated and adapted into French. Results of the validation phase showed that the UCLA-GAS-F had high test-retest reliability (ICC 0.83, 95%CI 0.74-0.89), but internal consistency below 0.7 (Cronbach's alpha 0.49 to 0.57). The scale showed no ceiling or floor effect. As expected, the French version showed a weak correlation to the ASES (r = 0.28, p = .003) and to the AAQ (r = 0.32, p = .001).ConclusionsDespite low internal consistency, the French version of the UCLA-GAS showed appropriate psychometric properties. Further validation should include healthcare professionals and other healthcare students.

Dataset Information

Los Angeles Motor Scale to Identify Large Vessel Occlusion: Prehospital Validation and Comparison With Other Screens.

Publications

Los Angeles Motor Scale to Identify Large Vessel Occlusion: Prehospital Validation and Comparison With Other Screens.

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