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Relationship between stroke etiologies and clinical manifestations/Oxfordshire

Introduction: The classification of strokes subtypes is important, since they have different management and prognoses. This study aims to verify associations between the etiologies of the stroke according to the TOAST classification and the clinical presentation by the subtypes of the Oxfordshire scale. Methods: A descriptive cross-sectional study, with patients admitted to a stroke unit of a reference hospital in Salvador-BA between 11/2017 and 03/2020. We included patients over 18 years of age and didn’t include patients with inaccuracies in the filling of medical records or who didn’t meet the criteria for admission to the cohort. Results: 300 patients between 25 and 98 years old (mean: 64 years; SD: 13.34) were analyzed. Regarding cardioembolic etiology (CE), 34 patients (45.3%) had lacunar syndromes (LACS) and 25 (33.3%) Partial Anterior Circulation Syndrome (PACS). Patients with Large Artery Atherosclerosis (LAA) 24 (40.7%) had PACS while 21 (35.6%) of the LACS patients diagnosed with small vessel occlusion (SVO) 22 (62.9%) had LACS. Futhermore, patients with cryptogenic strokes (CS) had predominantly PACS and LACS, 27 (31%) and 40 (46%) respectively. Conclusion: Based on the results of acute strokes of CE, SVO and CS origin are related to LACS. The events originated by LAA are more associated with PACS. Events caused by SVO were related to lacunar syndromes, corroborating with findings in the literature.