BIRDs on Stereoelectroencephalography (SEEG)
Abstract number :
1.158
Submission category :
3. Neurophysiology / 3C. Other Clinical EEG
Year :
2021
Submission ID :
1826388
Source :
www.aesnet.org
Presentation date :
12/4/2021 12:00:00 PM
Published date :
Nov 22, 2021, 06:53 AM
Authors :
Natasha Llanes, MD - University of South Florida; Stephanie MacIver, MD – Assistant Professor, Neurology, University of South Florida; Ushtar Amin, MD – Assistant Professor, Neurology, University of South Florida; Angélica Rivera-Cruz, MD – Assistant Professor, Neurology, University of South Florida; Yarema Bezchlibnyk, MD – Department of Neurosurgery, University of South Florida; Selim Benbadis, MD – Division Director, Epilepsy, Eeg, & Sleep Medicine, Neurology, University of South Florida
Rationale: Brief potentially ictal rhythmic discharges (BIRDs) are electroencephalographic (EEG) patterns greater than 4 Hz, lasting 0.5-10 seconds and are not consistent with a normal variant. BIRDs lie on the ictal end of the interictal-ictal continuum, suggesting a highly epileptogenic pattern that does not quite qualify as a seizure. Often described in critically ill, they can serve as an early predictor of seizures. Conventionally, BIRDs have been described on scalp EEG, but not on stereo-EEG (sEEG). Our aim is to describe BIRDs on sEEG and their possible significance.
Methods: We prospectively collected and reviewed sEEG records that contained BIRDs over a period of 20 months (from June 1, 2019 to February 28, 2021).
Results: We identified BIRDs in 7 patients out of 35 sEEGs (20%). See Table 1.
Conclusions: BIRDs can be identified on intracranial EEG, and they appear to have a similar significance to those seen on surface EEG, including localizing value.
Funding: Please list any funding that was received in support of this abstract.: N/A.
Neurophysiology