Electroencephalographic Findings in Patients with COVID-19: A Single-center Experience/COVID-19 Tanili Hastalarda Elektroensefalografik Bulgular: Tek Merkez Deneyimi

Objective: Neurological manifestations associated with coronavirus disease-2019 (COVID-19) are broad and heterogeneous. Although the predominant clinical presentation is respiratory dysfunction, concerns have been raised about the neurological hallmarks. Many reports suggest some findings on electroencephalography (EEG) can be relevant to COVID-19. Materials and Methods: Patients with COVID-19 admitted to hospital and referred for EEG from March 1, 2020 to February 15, 2021, were retrospectively enrolled. When research databases were queried with the terms "COVID-19 (ICD code:10: U07.3) and "EEG", total number of patients obtained was 32. Number of patients excluded due to unconfirmed diagnose with COVID-19 was 12. Twenty adult patients with certain diagnose of COVID-19 who underwent 21-electrode routine EEG during the outbreak with neurological deterioration were identified. Results: Background abnormalities was evident in one of fourth patients (n=5, 25%). Mild diffuse slowing (n=3, 15%) and focal slowing (n=3, 15%) with left frontotemporal tendency (n=2, 10%) were observed. Epileptiform abnormalities and seizures were detected showing focal (n=4, 20%) or generalized onset (n=1, 5%). Conclusion: Here we performed a retrospective single-centre study to evaluate the electroencephalographic findings in patients diagnosed with COVID-19 since it remains unknown. it needs to be more clarified with increasing number of recordings Keywords: COVID-19, electroencephalography, epilepsy Amaç: Koronavirüs hastaligi-2019 (COVID-19) ile iliskili nörolojik bulgular yaygin ve heterojendir. Öncü klinik bulgu solunum disfonksiyonu olmasina ragmen, nörolojik tutuluma ait soru isaretleri de ortaya çikmaktadir. Elektroensefalografide (EEG) bazi bulgularin COVID-19 a spesifik olabilecegini iddia eden birçok bildiri mevcuttur. Gereç ve Yöntem: Bu çalismada 1 Mart 2020 ile 15 Subat 2021 tarihleri arasinda hastaneye basvurup EEG için konsülte edilen COVID-19 hastalari geriye dönük incelendi. Veri tabanlari "COVID-19 (ICD kodu: 10: U07.3) ve "EEG" terimleri ile sorgulandiginda elde edilen toplam hasta sayisi 32'idi. COVID-19 kesin tanisinin dogrulanamamasi nedeni ile dislanan hasta sayisi 12 idi. Salgin sirasinda nörolojik bulgusu olup 21-elektrot-rutin EEG uygulanan kesin COVID-19 tanili 20 yetiskin hasta çalismaya dahil edildi. Bulgular: Zemin aktivitesi anormallikleri dört hastadan birinde belirgindi (n=5, %25). Sol frontotemporal bölge egilimi gösteren (n=2, %10) fokal yavasla