Comparison of sphenoidal, foramen ovale and anterior temporal placements for detecting interictal epileptiform discharges in presurgical assessment for temporal lobe epilepsy
Comparison of sphenoidal, foramen ovale and anterior temporal placements for detecting interictal epileptiform discharges in presurgical assessment for temporal lobe epilepsy
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DOI：
10.1016/s1388-2457(99)00039-5
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发表时间：
1999-05-01
影响因子：
4.7
通讯作者：
Polkey, CE
中科院分区：
文献类型：
--
作者：
Fernandez Torre, JL;Alarcón, G;Polkey, CE
目的：一些作者最近强调，蝶骨电极尖端的位置在其检测近中-基底棘波的功效中起着至关重要的作用。我们已经测试了这一假设，通过比较位于卵圆孔（CFO）的卵圆孔束与头皮电极在检测发作间期癫痫样放电的接触的灵敏度。我们还比较了深和浅卵圆孔接触在同一束，以建立是否更深的接触可以检测到癫痫样放电没有看到在卵圆孔或在scale.Methods：检测癫痫样放电的敏感性同时颅内和头皮脑电图记录从20例患者下遥测术前评估颞叶癫痫进行了比较。结果：在评估的2280例癫痫样放电中，约70%仅见于深卵圆孔接触处。在CFO和/或头皮电极记录的722次放电中，在CFO处观察到698次，在头皮前颞电极处观察到690次。仅29次（4.15%）记录到CFO放电，而非前颞电极放电。在21次（3.04%）CFO未能检测到的放电在前颞electrode.Conclusions：我们的研究结果证实了以前的结果表明，蝶骨电极，但准确定位，提供检测灵敏度没有显着增加相比，前颞头皮电极。此外，这些结果证实，在最深卵圆孔接触处观察到的大部分放电在头皮上或在浅卵圆孔接触处均未观察到。(C)1999爱思唯尔科学爱尔兰有限公司保留所有权利。
Objectives: Some authors have recently stressed that the position of the tip of the sphenoidal electrode plays a crucial role in its efficacy to detect mesio-basal spikes. We have tested this hypothesis by comparing the sensitivity of a contact of a foramen ovale bundle located at the foramen ovale (CFO) with scalp electrodes in detecting interictal epileptiform discharges. We have also compared deep and superficial foramen ovale contacts in the same bundle in order to establish whether deeper contacts can detect epileptiform discharges not seen at the foramen ovale or on the scalp.Methods: The sensitivity for detecting epileptiform discharges of simultaneous intracranial and scalp EEG recordings from 20 patients under telemetric presurgical assessment for temporal lobe epilepsy were compared.Results: Out of 2280 epileptiform discharges evaluated, about 70% were seen only at the deep foramen ovale contacts. Out of the 722 discharges recorded by CFO and/or scalp electrodes, 698 were seen at the CFO and 690 at the scalp anterior temporal electrode. Only on 29 occasions (4.15%) were discharges recorded at the CFO and not at the anterior temporal electrode. On 21 occasions (3.04%) CFO failed to detect discharges seen at the anterior temporal electrode.Conclusions: Our findings confirm previous results suggesting that sphenoidal electrodes, however accurately positioned, offer no significant increase in detection sensitivity compared with anterior temporal scalp electrodes. In addition, these results confirm that a large proportion of discharges seen at the deepest foramen ovale contacts are not seen either on the scalp nor at the superficial foramen ovale contacts. (C) 1999 Elsevier Science Ireland Ltd. All rights reserved.