Published: 2021-08-27

Evaluation of electroencephalographic changes in patients with the new onset suspicious seizure movements

Ghasem Fattahzadeh, Abolfazl Atalu, Zahra Hamed, Anahita Abdolzadeh


Background: Abnormal EEG is a predictor of seizure relapse. Obtaining data related to the diagnosis and outcome of the first seizures is necessary for improving care for these patients, whereas data for these studies is scarce and is limited to a few a few centres. The aim was evaluation of the EEG changes in patients with first suspicious movements of seizure.

Methods: All of the patients with first suspicious movements of seizure referred to Alavi hospital of Ardabil from March 2019 to March 2020 enrolled in this study. Data including age, gender, etiology of the seizure, seizure type and EEG changes gathered. Collected data were analyzed by statistical methods in SPSS version 21.

Results: 71 patients were studied. Based on the seizure type, 50 (70.4%) patients had motor, 10 (14.1%) patients had nonmotor and 11 (15.5%) patients had focal seizures type impaired awareness. EEG findings were normal in 46 patients (64.8%). There were slowing waves and epileptic discharge in 12 (16.9%) and 13 (18.3%) patients, respectively. Abnormal EEGs recorded in routine modality in 16 patients (64%), H. V. modality in 2 patients (8%), Ph. S. modality in 2 patients (8%) and both routine and excitatory modalities in 5 (20%) patients.

Conclusions: There was not a significant relationship between EEG findings and age, gender, seizure etiology and seizure type. Also there was not a significant relationship between abnormal waves in different modalities and type and etiology of the seizures.


Electroencephalography, Seizure, Excitatory, Modalities, Seizure, Etiology

Full Text:



Palka D, Yogarajah M, Cock HR, Mula M. Diagnoses and referral pattern at a first seizure clinic in London. J Epileptol. 2017;25(1-2):31-6.

Aminoff MJ. Aminoff’s electrodiagnosis in clinical neurology e-book. 6th ed. Philadelphia: Elsevier Health Sciences; 2012.

Angus-Leppan H. First seizures in adults. BMJ. 2014;348:2470.

Pohlmann-Eden B, Beghi E, Camfield C, Camfield P. The first seizure and its management in adults and children. BMJ. 2006;332(7537):339-42.

Pohlmann‐Eden B, Newton M. First seizure: EEG and neuroimaging following an epileptic seizure. Epilepsia. 2008;49(1):19-25.

Noachter S. A glossary of terms most commonly used by clinical electroencephalographers and proposal for the report form for the EEG findings. Electroencephalogr Clin Neurophysiol Suppl. 1999;52:21-41.

Kane N, Acharya J, Beniczky S, Caboclo L, Finnigan S, Kaplan PW, et al. A revised glossary of terms most commonly used by clinical electroencephalographers and updated proposal for the report format of the EEG findings. Revision 2017. Clin Neurophysiol Pract. 2017;2:170-185.

Pressler R, Beniczky S, Aurlien H, Fuglsang-Frederiksen A, Martins-da-Silva A, Trinka E, et al. W8.4 SCORE: specific features of the neonatal EEG. Clin Neurophysiol. 2011;122(1):S26.

Nowacki TA, Jirsch JD. Evaluation of the first seizure patient: key points in the history and physical examination. Seizure. 2017;49:54-63.

Bergey GK. Management of a first seizure. Contin Lifelong Learn Neurol. 2016;22(1):38-50.

Bahrami P, Farhadi A, Movahedi Y. Frequency of seizure causes in patients referred to neurology clinic in Khorramabad city. Yafte. 2014;16(2):24-31.

Ahangar AA, Izadpanah F, Aghajanipour A, Baay MR. Etiology of sirzure disorder in cases admitted to emergency department of Ayatollah Roohani Hospital in Babol, Iran (2009-2011). J Babol Univ Med Sci. 2013;15(2):102-8.

Rowland LP, Pedley TA, Merritt Neurology. 10th ed. Philadelphia, PA: Lippincott Williams and Wilkins; 2010.

Yenjun S, Harvey AS, Marini C, Newton MR, King MA, Berkovic SF. EEG in adult‐onset idiopathic generalized epilepsy. Epilepsia. 2003;44(2):252-6.

Gholamreza-Mirzaei M. Comparing the validity of EEG in epileptic patients with and without activation methods. J Shahrekord Univ Med Sci. 2009;10(4):22-7.

Mitra H, Nazanin R, Ali ATS. EEG disorder in patients with complex febrile convulsion and underlying risk factors. J Kermanshah Univ Med Sci (Behbood). 2014;18(5):298-302.