摘要
目的 :分析额叶癫发作的临床及EEG特征。方法 :经同步录像脑电图 (Video—EEG)监测 ,对 40例癫病人 181次额叶发作的临床表现及EEG进行同步分析。结果 :额叶发作频繁而短暂 ,以睡眠中发作为主。常见的临床表现依次为过度运动、扭转性强直、姿势性强直、发声、假性失神等。发作间期额区棘、尖波稀少且波形不典型 ,发作期额叶限局性或弥漫性的改变与背景活动的差别不明显。结论 :临床和EEG不典型是导致额叶发作临床诊断困难或误诊的主要原因。认识额叶发作的临床特点 ,延长EEG记录时间及发作期临床—EEG同步分析有助于对额叶发作的诊断。
Objectives: To analyse the clinical and EEG characteristics of frontal lobe seizures.Methods: The clinical manifestations and EEG patterns of 181 frontal lobe seizures in 40 patients with epilepsies were analysed synchronously.Results: Frontal lobe seizures were frequent, brief and nocturnal preponderance. Most seizures occurred during sleep. The common ictal manifestations included hypermotor seizures or complex motor automatisms, head and eye tonic deviation, tonic posturing, vocalization, pseudofrontal absences and so on. Spikes or sharps during interictal EEG were infrequent with atypical patterns. Ictal EEG showed focal discharges in frontal areas or diffused changes with no obvious difference from background activity.Conclusions: Atypical clinical and EEG manifesations make the diagnosis difficult and were the main reasons of misdiagnosing frontal lobe seizures. Recognizing the features of frontal lobe seizures, prolonged duration of EEG records, and synchronously analyses ictal clinical and EEG might be helpful in the diagnosis of frontal lobe seizures.
关键词
癫痫
发作
额叶
脑电描记术
Epilepsy
Seizure
Frontal lobe
Electroencephalography
