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Susceptibility of Bilateral Synchronous Rhythmic Slow Wave in Secondary Epilepsy in Patients with Intracranial Tumor

Author: FangSheng
Tutor: DanZuo
School: Chongqing Medical University
Course: Surgery
Keywords: active electroencephalograph (AEEG) intracranialtumors secondary epilepsy bilateral synchronous rhythmic slow wave
CLC: R742.1
Type: Master's thesis
Year: 2012
Downloads: 9
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Abstract


OBJECTIVE:To explore the susceptibility of bilateral synchronousrhythmic slow wave displayed in the active electroencephalograph (AEEG)on the secondary epilepsy in patients with intracranial tumors.Methods: Retrospectively analyzed the bilateral synchronousrhythmic slow wave displayed in the AEEG of255patients withintracranial tumors of our hospital from Jan.2008to Jul.2010. Dividedpatients into two groups: group A are patients with preoperative epilepticseizures and group B with no preoperative epileptic seizures. Defined thebilateral synchronous rhythmic slow wave in the AEEG as variable a, usedepileptiform discharge as a reference object and defined epileptiformdischarge in the AEEG as variable b, while both bilateral synchronousrhythmic slow wave and epileptiform discharge in the AEEG was definedas variable a+b. Analyzed the difference of the number of patients withthree variables in group A and B, and mainly explored the susceptibility ofvariable a in the secondary epilepsy in patients with intracranial tumor.Results:①The occurrence rate of variable a in patients with intracranial tumor was56.86%(145/255)on preoperative.②Before theoperation, the occurence rate of variable a in Group A was66.23%(51/77),while the occurence rate of variable a in Group B was52.81%(94/178), theoccurence rate of variable a in Group A was higher than that in Group B(P<0.05).And the occurrence rate of variable b in group A and group Bwere29.87%(23/77)and9.55%(17/178), while the occurrence rate ofvariable a+b were66.23%(51/77)and7.30%(13/178). Both variable b andvariable a+b showed great significance in group A and group B(P<0.05).Further analyzed the difference on the occurrence of seizures between thetwo variables, and result showed variable a+b appeared in Group A was alittle higher than variable b (P<0.05).③45patients had earlypostoperative epilepsy, and35(77.78%) of them recorded to variable a orvariable a+b in the AEEG. Conducted consistency analysis on patients withthe occurrence rate of the bilateral synchronous rhythmic slow wave andpatients with postoperative early seizure, and got the result that theoccurrence rate of the two kinds in patients were high in consistency (k=0.6002).CONCLUSION: Bilateral synchronous rhythmic slow wave mayincrease the susceptibility on the secondary epilepsy in patients withintracranial tumors.

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CLC: > Medicine, health > Neurology and psychiatry > Neurology > Brain diseases > Epilepsy
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