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Annals of Indian Academy of Neurology
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Predictors of seizures and associated functional outcome in a cerebral venous thrombosis cohort: An ambispective cohort study


1 Department of Neurology, All India Institute of Medical Sciences (AIIMS), Ansari Nagar, New Delhi, India
2 Department of Neuroradiology, All India Institute of Medical Sciences (AIIMS), Ansari Nagar, New Delhi, India
3 Department of Biostatistics, All India Institute of Medical Sciences (AIIMS), Ansari Nagar, New Delhi, India

Correspondence Address:
Venugopalan Y Vishnu,
Department of Neurology, All India Institute of Medical Sciences (AIIMS), New Delhi
India
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/aian.aian_281_22

Background and Purpose: We aimed to explore the characteristics, clinical features, predictors of seizure, and associated clinical outcomes in patients with cerebral venous thrombosis (CVT). Methods: We enrolled patients with CVT from January 2014 to July 2020. Prospectively patients were recruited from December 2018. We analyzed predictors of seizures and associated good functional outcomes (modified Rankin Scale, mRS: 0–2) using multivariable logistic regression. Results: We enrolled 153 patients with CVT in which 77 (50%) had presented with a seizure. The median age was 31 years (IQR 16-46), and the majority were men (73.2%). Focal to bilateral tonic-clonic was the most common seizure type (27%), followed by generalized seizures (22%). None of the patients had status epilepticus. Antiseizure medications (ASM) were used in 71% of patients at diagnosis, 42% having received them prophylactically. Supratentorial parenchymal involvement was seen in 72% of seizure patients compared to 38% in those without, and superior sagittal sinus was most commonly involved. Percentage of patients who achieved good clinical outcome (mRS 0-2) at 3 months did not vary significantly between both groups. The only predictor for seizures with CVT was the presence of a parenchymal lesion (OR-3.75, 95% CI 1.79-7.85), whereas seizure occurrence (OR- 12.55, 95% CI- 1.53-102.59) was associated with statistically significant risk for recurrent seizures, by multiple logistic regression analysis. Seizure occurrence was not associated with adverse functional outcomes. Conclusion: Seizures at presentation occurred in 50% of patients with CVT which was associated with a parenchymal lesion in the brain. There was no association between seizure at presentation and clinical outcome.


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