Predictors of stimulation-induced seizures during perirolandic glioma resection using intraoperative mapping techniques المنبئات بالنوبات التشنجية التي يسببها التحفيز أثناء استئصال الورم الدبقي المحيطي باستخدام تقنيات رسم الخرائط أثناء الجراحة

Faculty Medicine Year: 2021
Type of Publication: ZU Hosted Pages: 1-9
Authors:
Journal: Surgical Neurology International Surgical Neurology International Volume:
Keywords : Predictors , stimulation-induced seizures during perirolandic glioma    
Abstract:
Predictors of stimulation-induced seizures during perirolandic glioma resection using intraoperative mapping techniques Ahmed A. Morsy1 , Ayman M. Ismail1 , Yasser M. Nasr2 , Salwa H. Waly2 , Esam A. Abdelhameed3: Intraoperative mapping techniques maximize safety and efficacy during perirolandic glioma resection but may induce seizures and limit the procedure. We aim to report the incidence and predictors of stimulation-induced seizures during mapping either patient is awake or under general anesthesia (GA). Methods: Retrospective analysis of 64 patients (40 awake and 24 GA) with perirolandic glioma underwent resection using intraoperative mapping techniques between 2014 and 2019. Preoperative data, operative details, postoperative neurological status, and extent of resection (EOR) were analyzed. Predictors of intraoperative seizures were assessed. Results: The mean cortical and subcortical stimulation intensities needed to evoke motor responses were significantly lower in awake cases than in GA patients (4.9 ± 0.42 vs. 8.9 ± 1.2 mA) and (8.3 ± 0.62 vs. 12.1 ± 1.1 mA), respectively (P = 0.01). Incidence of intraoperative seizures was lower but statistically non-significant in awake cases (10% vs. 12.5%) (P = 0.76). Preoperative multiple antiepileptic drugs (AEDs) (P = 0.03) and lowgrade glioma (P = 0.04) were statistically significant predictors for intraoperative seizures. Mean EOR in awake cases was 92.03% and 90.05% in GA cases (P = 0.23). Postoperative deficits were permanent after 3 months only in 5% of awake patients versus 8.3% of GA group (P = 0.59). Conclusion: Awake craniotomy with intraoperative mapping can be done safely for perirolandic gliomas with lower but statistically nonsignificant incidence of intraoperative seizures and this could be attributed to statistically significant lower stimulation intensities required for mapping. Preoperative multiple AEDs and lowgrade glioma are significant predictors for intraoperative seizures. Keywords: Awake craniotomy, Brain mapping, Eloquent areas, Intraoperative seizures, Perirolandic glioma
   
     
 
       

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