Contribution of intermittent photic stimulation to routine EEG
| Autor: | Nathalie Kubis, Sana Masmoudi, Pierre Lozeron, Clément Vialatte de Pémille, Saleheddine Rekik, Alexandra Richard, Hélène Amiel, Elodie Meppiel |
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| Rok vydání: | 2021 |
| Předmět: |
Adult
Pediatrics medicine.medical_specialty Neurology Population Electroencephalography Epilepsy Seizures Physiology (medical) Humans Medicine Intermittent photic stimulation education Retrospective Studies Past medical history education.field_of_study medicine.diagnostic_test business.industry General Medicine Middle Aged medicine.disease Correlation analysis Female Neurology (clinical) Juvenile myoclonic epilepsy business Photic Stimulation |
| Zdroj: | Neurophysiologie Clinique. 51:549-553 |
| ISSN: | 0987-7053 |
| Popis: | Objective Intermittent photic stimulation (IPS) is an activation procedure performed during electroencephalography (EEG) to detect photosensitive patients. This procedure is recommended in routine EEGs but the benefit of IPS in the general population is not clearly ascertained. Methods We retrospectively analyzed 7683 EEGs of patients referred for a routine EEG to the Clinical Physiology Department of Lariboisiere hospital, mainly from the emergency ward and the department of neurology, not specifically involved in epilepsy. All EEGs were performed with a standardized protocol. Photic driving response, photomyoclonic response and photoparoxysmal response (PPR) were specifically collected. A correlation analysis was performed between the response induced by IPS, demographical and clinical data, and current treatment or recreational drug use. Results Median age was 56.4 years (41.7-71.2); 3,042 (39.6%) of patients were female; 1,208 patients (15.7%) had a past medical history of epilepsy. Photic driving response occurred in 67 EEGs (0.9%), and PPR in 6 EEGs (0.1%), all with a known history of epilepsy. Thus 0.5% (6/1,208) of epilepsy patients had a PPR. Photomyoclonic responses were not observed. Juvenile myoclonic epilepsy was the only factor associated with the presence of PPR (RR=75.26 [11.82-479.21]). PPR was not associated with clinical symptoms or seizures. There was no correlation with the type of treatment or recreational drug use. Conclusions Our results confirm that responses to IPS are rare in adult patients and especially PPR. Moreover, all patients with a PPR had a known previous history of epilepsy. These results question the benefit of IPS in adult patients with no history of epilepsy. |
| Databáze: | OpenAIRE |
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