ArticleThe western journal of emergency medicine2025
The Incidence of Stroke Mimics in the Emergency Department of a Tertiary-care Center in Lebanon.
Article in The western journal of emergency medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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5 authors.
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Abstract
introductionStroke mimics comprise a significant proportion of cases presenting with neurological deficits and can be difficult to differentiate from true stroke cases. Our aim in this study was to assess the frequency and etiologies of stroke mimics presenting to our emergency department (ED).
methodsWe conducted a retrospective review of the charts of patients presenting to the ED of a tertiary-care center between November 2018-August 2023 and on whom the stroke code was activated. The cases were categorized into real strokes or stroke mimics based on patients' discharge diagnoses.
resultsStroke code activation was implemented on 584 patients during the study period. These patients received full service and a final discharge diagnosis. Of these, 349 (59.8%) received a diagnosis of a true stroke, whether ischemic, hemorrhagic, or transient ischemic attack. The remaining 235 (40.2%) were classified as stroke mimics, with functional (12.8%) and medical (87.2%) etiologies. Medical stroke mimics were further categorized into non-cerebrovascular neurologic (59.5%), infection or allergic reaction (17.1%), cardiovascular (11.7%), metabolic or drug-induced (8.3%), and other (3.4%). Factors found to favor stroke mimics were history of neurological (adjusted odds ratio [aOR] 4.98; 95% confidence interval [CI] 2.89 - 8.57) or psychiatric disorders (aOR 2.88; 95% CI 1.29 - 6.41) and patients presenting with altered mental status (aOR 1.70; 95% CI 1.04 - 2.80) or generalized weakness (aOR 2.38; 95% CI1.12 - 5.03). Conversely, factors that favored true strokes (with OR <1 for mimics), were patients aged >65 years (aOR 0.61; 95% CI 0.38-0.96), history of hypertension (aOR 0.61; 95% CI 0.38 - 0.97) or atrial fibrillation (aOR 0.39; 95% CI 0.21 - 0.72), and presenting with speech disturbance (aOR 0.56; 95% CI 0.37-0.83) or extremity weakness (aOR: 0.22; 95% CI 0.15-0.38).
conclusionApproximately 40% of cases presenting to our ED with stroke code activation were found to be mimics. The high ratio warrants the establishment and adoption of a more specific triaging algorithm for stroke code activation to minimize the pressure on an already overburdened healthcare sector.
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