Abstract
Objective To study the application value of introperative electrocorticography (ECoG)in anterior temporal lobectomy.Methods To retrospectively collect the clinical data and results of introperative ECoG of 105 patients with anterior temporal lobectomy,and analyze the affect factors of ECoG and relationship of results of ECoG and surgical outcomes.Results The average duration for preresective ECoG was 72 min,and results of preresective ECoG included normality in 11 cases,focal epileptiform discharge in anterior or inferior temporal lobe in 73 patients,and diffuse epileptiform discharge in 21 cases.The average time for postresective ECoG was 38 min,and results of preresective ECoG included normality in 91 cases,focal epileptiform discharge in residual temporal lobe in 9 patients,and diffuse epileptiform discharge in 5 cases.Significant difference wasn't found in result of preresective ECoG in different age groups.Patients with short seizure history (＜5 yrs) rendered 83.3% focal epileptiform discharge,which was significant higher than those of the other 2 groups.6 cases underwent extensive resection on the basis of results of postresective ECoG.Patients with focal discharge in preresective ECoG and normality in postresective ECoG presented better surgical outcomes than others' results in ECoG,and the difference was significant.Conclusion 70% patients with temporal lobe epilepsy present focal epileptiform discharger in anterior temporal lobe in introperative EcoG.The results of ECoG could be useful to forcast surgical outcome,therefore ECoG has definite application value in anterior temporal lobectomy. Key words: Electrocorticography; Temporal lobe epilepsy; Anterior temporal lobectomy
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