| Objective: to investigate intraoperative electrophysiological character-ristics of the secondary epilepsy and related factors of influencing on epileptic results. Methods: intraoperative monitored electrocorticographic characteristics of 42 patients of secondary epilepsy from 2005.10 to 2005.4. and analyzed interrelationship of amplitude and density of spike wave of ECoG, electrocoagulation on epileptic cortex, preoperative seizure duration, seizure frequency, seizure forms, pathological results, and evaluated their influences on the epileptic results. Results: 40 cases detected spike wave in 42 patients' ECoG, 35 patients had following-up, Engel classification was applied in our study, class I: 24 cases, class II: 6 cases, class III: 2 cases, class IV: 3 cases. Amongst 23 cases who's duration less than 1 year(including 1 year), 18 cases were class I, 5 cases were class II and above, amongst 12 cases whose duration more than 1 year, 6 cases were class I, 6 cases were class II and above, two groups compared P=0.075; There were 18 cases whose seizure frequency less than one time per month, amongst 15 cases were class I, 3 cases were class II and above, there were 17 cases who' seizure frequency were more than one time per month (including 1 month), amongst 9 cases were class I, 8 cases were class II and above, two group compared P=0.043; 24 cases detected spike wave after lesionectomies, 16 cases were manipulated electrocoagulation on epileptic cortex , which class I were 81.25%(13/16) and the others without electrocoagulation class I were 37.5%(3/8), with and without electrocoagulation compared P=0.043. The results of secondary epilepsy caused... |
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