Factors associated with early outcome in patients with large-vessel carotid strokes
Elisa Cuadrado-Godia1, Sara Jimena, Angel Ois
1Neurology Department, Hospital del Mar, Universitat Autònoma de Barcelona, Barcelona, Spain. Ecuadrado@hospitaldelmar.cat
Insights
Patients with symptomatic carotid stenosis often experience mild ischemic strokes but face a high risk of early neurological deterioration. Increased carotid stenosis degree significantly elevates stroke severity and deterioration risk.
Area of Science:
- Neurology
- Vascular Medicine
- Stroke Research
Background:
- Symptomatic carotid stenosis is a significant risk factor for ischemic stroke.
- Understanding stroke severity and early neurological deterioration (END) is crucial for patient management.
- Carotid artery disease influences stroke outcomes.
Purpose of the Study:
- To characterize the severity of ischemic strokes in patients with symptomatic carotid stenosis.
- To identify the incidence of early neurological deterioration (END) in this patient group.
- To analyze factors influencing stroke severity and END.
Main Methods:
- An observational cohort study included 338 patients with ischemic stroke and carotid stenosis.
- Stroke severity was categorized using the NIH Stroke Scale (NIHSS).
- Logistic regression analyses assessed risk factors for stroke severity and END.
Main Results:
- Most strokes (75.1%) were mild, but 23.1% of patients experienced END.
- Higher degree of carotid stenosis, intracranial disease, and plasma glucose correlated with increased stroke severity.
- END was independently associated with degree of carotid stenosis, prior TIA, and mean arterial pressure.
Conclusions:
- Ischemic strokes from carotid artery disease are typically mild but have a high rate of END.
- The degree of carotid stenosis is a key predictor of both stroke severity and END risk.
Objective:
To describe the severity and early neurological deterioration (END) in patients with symptomatic carotid stenosis and to analyse the influence of related factors.
Methods:
Observational cohort study of patients with ischaemic stroke, ipsilateral carotid stenosis and without evidence of cardiac sources of embolism prospectively recorded since January 2003 to January 2012. Initial severity was categorised as mild (NIH stroke scale (NIHSS) ≤7), moderate (NIHSS 8-14) or high (NIHSS >14). Logistic ordinal and regression analyses were performed for stroke severity and END risk.
Results:
Of 2332 ischaemic strokes attended, 338 patients were included. Stroke severity was mild in 254 (75.1%) cases, moderate in 53 (15.7%) and severe in 31 (9.2%). Adjusted ORs (95% CI) for stroke severity were: degree of carotid stenosis, 2.20 (1.55 to 3.11, p<0.001); intracranial disease, 1.93 (1.18 to 3.17, p=0.009); plasma glucose, 1.01 (1.003 to 1.02, p<0.001); and previous transient ischaemic attack (TIA), 0.37 (0.17 to 0.82, p=0.014). 78 patients (23.1%) had END. Multivariate analysis showed independent association between END and degree of carotid stenosis (OR 1.64, 1.14 to 2.34, p=0.007), previous TIA (OR 2.40, 1.25 to 4.57, p=0.008) and mean arterial pressure (OR 1.02, 1.01 to 1.04, p=0.003).
Conclusions:
Strokes due to large vessel disease in the carotid artery are in general of mild severity and have a high rate of END. The degree of stenosis has a clear association with higher severity and END risk.
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