TY - JOUR
T1 - Yield and risk associated with prolonged presurgical video-EEG monitoring
T2 - a systematic review
AU - van Griethuysen, Renate
AU - van Asch, Charlotte J.J.
AU - Otte, Wim M.
AU - Sander, Josemir W.
AU - Braun, Kees P.J.
N1 - Funding Information:
JWS is based at NIHR University College London Hospitals Biomedical Research Centre, which receives a proportion of funding from the UK Department of Health's Research Centres funding scheme, receives research support from the Dr Marvin Weil Epilepsy Research Fund, the UK Epilepsy Society and the Christelijke Vereniging voor de Verpleging van Lijders aan Epilepsie, The Netherlands, and has received fees as a speaker or consultant from Eisai, UCB, GW, Arvelle and Zogenix outside the submitted work. RvG, WO and KB gratefully received support from the MING fund of the “Vrienden van UMC Utrecht” foundation. CvA has no conflicts of interest to declare.
Publisher Copyright:
© 2022 Epileptic Disorders.
PY - 2022/12/1
Y1 - 2022/12/1
N2 - Objective: Presurgical long-term video-EEG monitoring (LT-VEEG) is an important part of the presurgical evaluation in patients with focal epilepsy. Multiple seizures need to be recorded, often in limited time and with the need to taper anti-seizure medication (ASM). The aim of this study was to systematically study the yield – in terms of success – and risks associated with presurgical LT-VEEG, and to identify all previously reported contributing variables. Methods: A systematic review of the databases of PubMed Medline, Embase, Cochrane Central, and the Cochrane Database of Systematic Reviews were searched following the Preferred Reporting Items for Systematic Reviews (PRISMA) guideline. Publications about presurgical LT-VEEG reporting on variables contributing to yield and risk were included. Study characteristics of all included studies were extracted following a standardized template. Within these articles, studies presenting multivariable analyses of factors contributing to the risk of adverse events or the success of LT-VEEG were identified. Results: We found 36 articles reporting on LT-VEEG, including 4,703 presurgical patients, both children and adults. Presurgical LT-VEEG monitoring led to an average yield of 85%. Adverse events occurred with an averaged total event rate of 17%, but the type of included events was variable among studies. Factors reported to independently contribute to successful LT-VEEG were: baseline seizure frequency, a shorter interval from the most recent seizure, extratemporal lobe epilepsy, and no requirement for ASM reduction. Factors independently contributing to the occurrence of adverse events were: ASM tapering, a history of status epilepticus, a history of focal to bilateral tonic-clonic seizures, psychiatric comorbidity, and ASM taper rate. Significance: This study reveals that the data on factors contributing to yield and risk of adverse events is significant and variable, and often reported with inadequate statistics. Future research is warranted to develop guidelines for ASM withdrawal during presurgical video-EEG monitoring, taking predefined factors for success and risks of adverse events into account.
AB - Objective: Presurgical long-term video-EEG monitoring (LT-VEEG) is an important part of the presurgical evaluation in patients with focal epilepsy. Multiple seizures need to be recorded, often in limited time and with the need to taper anti-seizure medication (ASM). The aim of this study was to systematically study the yield – in terms of success – and risks associated with presurgical LT-VEEG, and to identify all previously reported contributing variables. Methods: A systematic review of the databases of PubMed Medline, Embase, Cochrane Central, and the Cochrane Database of Systematic Reviews were searched following the Preferred Reporting Items for Systematic Reviews (PRISMA) guideline. Publications about presurgical LT-VEEG reporting on variables contributing to yield and risk were included. Study characteristics of all included studies were extracted following a standardized template. Within these articles, studies presenting multivariable analyses of factors contributing to the risk of adverse events or the success of LT-VEEG were identified. Results: We found 36 articles reporting on LT-VEEG, including 4,703 presurgical patients, both children and adults. Presurgical LT-VEEG monitoring led to an average yield of 85%. Adverse events occurred with an averaged total event rate of 17%, but the type of included events was variable among studies. Factors reported to independently contribute to successful LT-VEEG were: baseline seizure frequency, a shorter interval from the most recent seizure, extratemporal lobe epilepsy, and no requirement for ASM reduction. Factors independently contributing to the occurrence of adverse events were: ASM tapering, a history of status epilepticus, a history of focal to bilateral tonic-clonic seizures, psychiatric comorbidity, and ASM taper rate. Significance: This study reveals that the data on factors contributing to yield and risk of adverse events is significant and variable, and often reported with inadequate statistics. Future research is warranted to develop guidelines for ASM withdrawal during presurgical video-EEG monitoring, taking predefined factors for success and risks of adverse events into account.
KW - adverse events
KW - anti-seizure medication
KW - epilepsy
KW - medication withdrawal
KW - presurgical
KW - video-EEG monitoring
UR - http://www.scopus.com/inward/record.url?scp=85136857664&partnerID=8YFLogxK
U2 - 10.1684/epd.2022.1484
DO - 10.1684/epd.2022.1484
M3 - Review article
C2 - 36039766
AN - SCOPUS:85136857664
SN - 1294-9361
VL - 24
SP - 1033
EP - 1045
JO - Epileptic disorders : international epilepsy journal with videotape
JF - Epileptic disorders : international epilepsy journal with videotape
IS - 6
ER -