Outcomes of Long-term Video EEG monitoring for epilepsy presurgical evaluation
- VernacularTitle:Эпилепсийн мэс заслын өмнөх бэлтгэлд урт хугацааны видео- хяналтат тархины цахилгаан бичлэгийг нэвтрүүлсэн үр дүн
- Author:
Gansuvd O
1
;
Battamir E
1
;
Budlkham J
1
;
Mendjargal N
1
,
2
;
Solongo Ts
1
;
Pagmadulam Ts
1
;
Tovuudorj A
1
,
2
Author Information
1. Epilepsy center, Mongolia-Japan hospital
2. Department of Neurology, School of Medicine, MNUMS
- Publication Type:Journal Article
- Keywords:
temporal lobe epilepsy, semiology, epilepsy surgery
- From:
Mongolian Journal of Health Sciences
2025;87(3):16-20
- CountryMongolia
- Language:Mongolian
-
Abstract:
Background:One-third of people with epilepsy have drug-resistant epilepsy,
making surgical treatment necessary. Comprehensive pre-surgical evaluations,
including long-term video-electroencephalographic (VEEG) monitoring,
magnetic resonance imaging (MRI), and neuropsychological testing, are essential
components of epilepsy presurgical evaluation. The Epilepsy Center
at the Mongolian-Japanese Hospital of MNUMS was established in September
2022 and introduced long-term video-EEG monitoring in May 2023. This
marked the first time in Mongolia that comprehensive evaluation for epilepsy
surgery became available.
Aim:To evaluate the role and outcomes of long-term video-EEG monitoring in
the pre-surgical assessment of epilepsy patients
Materials and Methods:A prospective cohort study was conducted at the
Epilepsy Center of the Mongolian-Japanese Hospital from May 2023 to March
2025. Patients who underwent VEEG and comprehensive pre-surgical evaluation
were included. Data included demographic information, seizure history, imaging
findings, and neurophysiological assessments (routine, sleep-deprived,
and long-term video EEG). Patients were divided into two groups based on
whether they met criteria for epilepsy surgery, and surgical outcomes were
compared between these groups.
Results:A total of 297 patients (104 children and 193 adults) participated in
the study. Of these, 96 (32%) were diagnosed with temporal lobe epilepsy and
underwent pre-surgical evaluation. The mean age of this group was 33±9.2
years; male-to-female ratio was 1:1. Age of seizure onset was 20±10.9 years,
and the mean duration of epilepsy was 14.8±10.3 years. Etiologies included
meningitis (21.7%), febrile seizures (15.2%), birth complications (12.5%), and
traumatic brain injury (12.5%). The average duration of VEEG monitoring was
1.45±0.68 days, during which 161 seizures were recorded (average 2.64 per
patient). No seizures were captured in 35 patients.
Among the 96 patients, 29 met the criteria for surgical intervention, and
11 underwent temporal lobe epilepsy surgery. Surgical outcomes were significantly
better compared to the non-surgical group (p<0.05).
Conclusion:Long-term video-EEG monitoring plays a critical role in precisely
localizing the epileptogenic zone, identifying seizure types, establishing differential
diagnoses, and optimizing surgical candidacy. It is confirmed as an
essential diagnostic tool in the pre-surgical evaluation for epilepsy surgery.
- Full text:202505232002044896716-20.pdf
