Electroclinical Features of Infantile Epileptic Spasms Syndrome

被引:0
作者
Erdemir, Gozde [1 ]
Moosa, Ahsan N. [2 ]
机构
[1] Univ Maryland, Sch Med, Med Ctr, Dept Neurol, Baltimore, MD 21201 USA
[2] Cleveland Clin, Neurol Inst, Pediat Epilepsy Sect, Epilepsy Ctr, Cleveland, OH USA
关键词
Epileptic spasms; infantile spasms; hypsarrhythmia; West syndrome; HIGH-FREQUENCY OSCILLATIONS; WEST-SYNDROME; SLOW WAVES; HYPSARRHYTHMIA; CHILDREN; SEIZURES; ONSET; CLASSIFICATION; DIAGNOSIS; ETIOLOGY;
D O I
10.4103/aian.aian_445_24
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Epileptic spasms are a unique, age-dependent manifestation of epilepsies in infancy and early childhood, commonly occurring as part of infantile epileptic spasms syndrome. Developmental stagnation and subsequent decline may occur in children with epileptic spasms, partly due to the abundant high-amplitude interictal epileptiform and slow wave abnormalities. Early recognition and treatment of epileptic spasms, along with the reversal of the electroencephalography (EEG) findings, are critical for improving outcomes. Recognizing hypsarrhythmia and its variations is key to confirming the diagnosis. The various patterns of hypsarrhythmia are not etiology specific, but could indicate the severity of the disease. Several scoring systems have been proposed to improve the inter-rater reliability of recognizing hypsarrhythmia and to assess EEG progress in response to treatment. Ictal patterns during spasms are brief and composed of slow waves, sharp transients, fast activity, and voltage attenuation, either in isolation or more commonly as a combination of these waveforms. Ictal patterns are commonly diffuse, but may be lateralized to one hemisphere in children with structural etiology. A subset of patients with epileptic spasms has a surgically remediable etiology, with readily identifiable lesions on neuroimaging in most cases. Asymmetry in epileptic spasms, concurrent focal seizures, and asymmetric interictal and ictal EEG findings may be present, but a lack of focality in electrophysiological findings is not uncommon. Intracranial EEG features of epileptic spasms have been described, but the utility of intracranial EEG monitoring in surgical candidates with overt focal epileptogenic lesions on magnetic resonance imaging is questionable, and surgery could be performed using noninvasive data.
引用
收藏
页码:227 / 235
页数:9
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