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Journals / Muğla Sıtkı Koçman Üniversitesi Tıp Dergisi / 2026 / Volume: 8 Issue: 3

The Analysis of Electroencephalography Requests in Clinical Neurophysiology Department

Klinik Nörofizyoloji Bölümünde Elektroensefalografi İstemlerinin Analizi

Mahmut Bilal Çaman(MUĞLA SITKI KOÇMAN ÜNİVERSİTESİ, TIP FAKÜLTESİ, DAHİLİ TIP BİLİMLERİ BÖLÜMÜ, NÖROLOJİ ANABİLİM DALI)0000-0001-7956-5677
Vedat Semai Bek(MUĞLA SITKI KOÇMAN ÜNİVERSİTESİ, TIP FAKÜLTESİ, DAHİLİ TIP BİLİMLERİ BÖLÜMÜ, NÖROLOJİ ANABİLİM DALI)0000-0003-4913-976X
Yasemin Ünal(MUĞLA SITKI KOÇMAN ÜNİVERSİTESİ, TIP FAKÜLTESİ, DAHİLİ TIP BİLİMLERİ BÖLÜMÜ, NÖROLOJİ ANABİLİM DALI)0000-0002-6110-9558
Gülnihal Kutlu(MUĞLA SITKI KOÇMAN ÜNİVERSİTESİ, TIP FAKÜLTESİ, DAHİLİ TIP BİLİMLERİ BÖLÜMÜ, NÖROLOJİ ANABİLİM DALI)0000-0002-9325-4151
Pages
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Publication Date
2021-12-28
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Overall abnormality percentage was similar in EEGs requested by either general neurologists (76.0%) or epilepsy specialists (76.9%) but not by other departments (82.1%).

📌 3 Key Takeaways

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Objective & Hypothesis:Transient loss of consciousness (LOC) has an important place in emergency applications.
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Key Findings & Data:EEG recordings between 01.07.2017 to 01.07.2018 in our outpatient clinic were reviewed. 1015 of EEGs were ordered by general neurologists (70.05%), 355 by epilepsy specialists (24.5%) and 79 by other departments (5.5%).
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Conclusion & Impact:Overall abnormality percentage was similar in EEGs requested by either general neurologists (76.0%) or epilepsy specialists (76.9%) but not by other departments (82.1%).
🔬Design:Review & Systematic Survey
📍Scope:2017 Verileri
⚙️Variables:EEG · Epilepsy · Seizure

Abstract

Transient loss of consciousness (LOC) has an important place in emergency applications. Therefore, it is very important to define the etiology of LOC. In this study, we retrospectively analyzed our outpatient electroencephalography (EEG) records to evaluate whether the clinician ordering the test had a fulfilling result. EEG recordings between 01.07.2017 to 01.07.2018 in our outpatient clinic were reviewed. 1015 of EEGs were ordered by general neurologists (70.05%), 355 by epilepsy specialists (24.5%) and 79 by other departments (5.5%). The Department of Psychiatry was leading among other departments by one third. 281 out of 1449 EEGs were abnormal (19.4%). Only three patients had a seizure during EEG recording. Preliminary diagnosis for EEG record request were epilepsy in 829 patients (57.2%), syncope in 257 patients (17.8%), headache in 12 (0.8%), vertigo in 12 (0.8%), cognitive dysfunction in 71 (4.9%), sleep disorder in 16 (1.1%), intracranial mass lesion in 18 (1.0%), cerebrovascular diseases in 54 (3.7%), altered mental status in 26 (73.3%) and encephalitis in 15 patients (1.0%). Normal EEG recording results were 76.5% in the recordings with preliminary diagnosis of epilepsy. Abnormalities found in patients with preliminary diagnosis of epilepsy patients were sharp/spike in 45.1%, focal/generalied slowing in 41.5% and background slowing in 11.8%. Overall abnormality percentage was similar in EEGs requested by either general neurologists (76.0%) or epilepsy specialists (76.9%) but not by other departments (82.1%). As a result; EEG should not be interpreted as a screening test, patients’ details and clinical features during loss of consciousness episode have a priceless importance and preliminary diagnosis should be re- and reevaluated before EEG recording request.

Özet

Geçici bilinç kaybı (LOC) acil servis başvuruları içinde önemli bir yere sahiptir. Bu sebeple LOC etiyolojisini tanımlamak çok önemlidir. Bu çalışmada istek yapan klinisyenin ihtiyaçlarının karşılanıp karşılanmadığını değerlendirmek için poliklinik elektroensefalografi (EEG) kayıtlarımızı retrospektif olarak inceledik. Polikliniğimizdeki 01.07.2017 - 01.07.2018 arasındaki EEG kayıtları incelendi. EEG'lerin 1015'i genel nöroloji uzmanları (%70.05), 355'i epilepsi uzmanları (%24.5) ve 79'u diğer bölümler (5.5) tarafından istendi. Psikiyatri bölümü; diğer bölümler içinde üçte bir oranla çoğunluktaydı. 1449 EEG'den 281'i anormaldi (%19.4). EEG kaydı sırasında sadece üç hasta nöbet geçirdi. EEG kayıt istemi için ön tanı; 829 hastada (%57.2) epilepsi, 257 hastada (%17.8) senkop, 12’sinde baş ağrısı (%0.8), 12’sinde vertigo (%0.8), 71'inde bilişsel işlev bozukluğu (%4.9), 16'sında uyku bozukluğu (%1.1), 18'inde intrakraniyal kitle lezyonu (%1.0), 54'ünde serebrovasküler hastalıklar (%3.7), 26'sında zihinsel durum değişikliği (%73.3) ve 15 hastada (%1.0) ensefalitti. Epilepsi ön tanısı ile yapılan kayıtlarda normal EEG kaydı oranı %76.5 idi. Epilepsi ön tanısı olan hastaların %45.1'inde keskin/diken, %41.5'inde fokal/jeneralize yavaşlama ve %11.8'inde zemin aktivitesinde yavaşlama anormallikleri bulundu. Genel olarak anormallik yüzdesi diğer bölümlerin aksine (%82.1), genel nörologlar (%76.0) ve epilepsi uzmanları (%76.9) tarafından talep edilen EEG'lerde benzerdi. Sonuç olarak; EEG bir tarama testi olarak yorumlanmamalıdır, bilinç kaybı epizodu sırasında hastaların detayları ve klinik özellikleri paha biçilmez bir öneme sahiptir, EEG kaydı isteminden önce ön tanı tekrar tekrar değerlendirilmelidir.

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Cite This Article

Çaman, M. B., Bek, V. S., Ünal, Y., Kutlu, G., *, M. B. Ç. (2021). The Analysis of Electroencephalography Requests in Clinical Neurophysiology Department. Muğla Sıtkı Koçman Üniversitesi Tıp Dergisi, Volume: 8 Issue: 3. https://doi.org/10.47572/muskutd.750450

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