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Clinical impact of a high-frequency seizure onset zone in a case of bitemporal epilepsy

Premysl Jiruska, Martin Tomasek, David Netuka, Jakub Otahal, John GR Jefferys, Xiaoli Li, Petr Marusic

. 2008 ; 10 (3) : 231-238.

Jazyk angličtina Země Francie

Typ dokumentu kazuistiky, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/bmc14067182

Grantová podpora
NR8843 MZ0 CEP - Centrální evidence projektů

Digitální knihovna NLK
Plný text - Článek
Zdroj

E-zdroje Online Plný text

NLK Free Medical Journals od 1999 do Před 1 rokem

Odkazy

PubMed 18782695
Knihovny.cz E-zdroje

High-frequency activity has been described as having a role in the initiation of epileptic seizures. The case of a patient with refractory bitemporal epilepsy is presented. Extraoperative monitoring with depth and subdural electrodes revealed an ictal pattern with a build-up of high-frequency (> 80 Hz) activity originating in the cortex, with spread to both hippocampi. This observation was only revealed with the use of high-pass filtering, and represented crucial information that significantly influenced the decision about the side, localization and extent of resection. Removal of the cortex generating high-frequency activity, led to cessation of seizures in this patient. Current knowledge about the role of high-frequency activity and the case presented here support the importance of recording with equipment capable of detecting fast activity during the presurgical invasive monitoring. An active search for a high-frequency seizure onset zone in patients with structurally-unaffected hippocampi may improve the outcome beyond that possible with conventional bandwidth, invasive EEG recordings.

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