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首页> 外文期刊>Clinical EEG and neuroscience: official journal of the EEG and Clinical Neuroscience Society (ENCS) >Acute EEG Patterns Associated With Transient Ischemic Attack
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Acute EEG Patterns Associated With Transient Ischemic Attack

机译：与短暂性缺血攻击相关的急性脑电图模式

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Background . Transient ischemic attack (TIA) is characterized by stroke-like neurologic signs and symptoms in the absence of demonstrable structural neuropathology. There is no test for TIA, with classification often reliant on subjective, retrospective report. Functional brain measures such as the electroencephalogram (EEG) may be helpful in objectively detecting and describing the pathophysiology of TIA, but this has not been adequately examined. Methods . EEG was obtained from a single electrode over the left frontal lobe during 3-minute resting-state and auditory oddball conditions administered to consecutive patients within 72 hours of admission to the acute stroke ward of a tertiary hospital. Separately, patients were classified by their treating team as having suffered either an ischemic stroke (n = 10) or a TIA (n = 10). Relative power of delta, theta, alpha, and beta EEG frequency bands were extracted for comparison between the 2 clinical groups and an existing normative sample of 10 healthy, age-, gender-, and education-matched older adults. Results . Analysis of variance with post hoc testing identified pronounced delta activity in stroke patients, while alpha and beta power were elevated in TIA patients. Both patient groups exhibited attenuated theta activity compared with healthy controls. Receiver operating characteristic curve analysis identified thresholds for each EEG frequency capable of distinguishing the 3 participant groups. Conclusions . TIA, ischemic stroke, and healthy aging are each associated with distinct electrophysiological profiles. These preliminary findings suggest that acute EEG may be helpful in elucidating the pathophysiology and reversibility of TIA symptoms, and further exploration of the value of this unique functional brain data is encouraged.
机译：背景 。短暂性缺血攻击（TIA）的特征在于缺乏明显的结构神经病理学的中风样神经系统症状和症状。对TIA没有测试，分类经常依赖主观，回顾报告。诸如脑电图（EEG）的功能性脑测量可能有助于客观地检测和描述TIA的病理生理学，但这尚未得到充分检查。方法 。在3分钟的休息状态和听觉怪兽条件下从左前叶上的单个电极从单个电极获得eeg，以在入院的急性医院急性中风病房的72小时内施用于连续患者。另外，患者的治疗团队分类为缺血性卒中（N = 10）或TIA（n = 10）。提取δ，θ，α和β脑电图频带的相对力量，以比较2临床组和10个健康，年龄，性别和教育匹配的老年人的现有规范样本。结果 。 HOC检测差异分析，鉴定了中风患者的发音δ活性，而TIA患者均升高了α和β功率。与健康对照相比，两种患者组都表现出减毒的θ活性。接收器操作特征曲线分析确定了能够区分3个参与者组的每个EEG频率的阈值。结论。 TIA，缺血性卒中和健康衰老各自与不同的电生理型材相关联。这些初步结果表明，急性脑电图可能有助于阐明TIA症状的病理生理学和可逆性，并鼓励对这种独特的功能性脑数据的价值进行进一步探索。

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