NDLI: Stereotypy of psychogenic nonepileptic seizurelike events compared to temporal lobe seizures: a quantitative analysis of ictal events captured during Video EEG monitoring

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Stereotypy of psychogenic nonepileptic seizurelike events compared to temporal lobe seizures: a quantitative analysis of ictal events captured during Video EEG monitoring

Content Provider	Semantic Scholar
Author	Vogrig, Alberto
Copyright Year	2017
Abstract	Objective: The overarching goal of the current study was to study the features of stereotypy in temporal lobe seizures (TLS) and psychogenic nonepileptic seizures (PNES) in four different domains: duration, type, sequence and continuity of ictal behaviours. Methods: Video-EEG (VEEG) data from 20 TLS patients and 20 PNES patients admitted to the Stanford Epilepsy Center were retrospectively analysed. A priori, a set of 59 possible ictal behaviours was defined. Each behaviour was analysed for its duration, sequence, and continuity using quantified measures. Results: A total of 138 seizures were analysed (90 PNES, 48 TLS). Median duration of PNES (143 s) was significantly longer than TLS (68 s) (P=0.002), and PNES exhibited greater duration variability (P=0.005). The density of “pauses” within a seizure (time-lag during which ictal behaviours cease) was significantly greater in PNES comparing to TLS (P=0.012). Moreover, the presence of 2 “pauses” during an episode determines a 69% probability of the seizure being non-epileptic, and only a 30% probability of being epileptic. Conclusion: While different degrees of stereotypy can be seen in TLE seizures and psychogenic seizure-like events, we found that event duration and fluctuating pattern of ictal behaviour (i.e., “on-off” pattern with pauses of behaviour during ictal event) are reliable predictors of an event being psychogenic in etiology.
Starting Page	20
Ending Page	20
Page Count	1
File Format	PDF HTM / HTML
DOI	10.11138/ccre/2017.2.1.020
Volume Number	2
Alternate Webpage(s)	https://www.ccrejournal.eu/common/php/portiere.php?ID=9d3f092ed0abc5f01521ee3f0b4315a3
Alternate Webpage(s)	https://doi.org/10.11138/ccre%2F2017.2.1.020
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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