Motorized bed artifact in the Intensive Care Unit

N. Sethi, J. Torgovnick, P. Sethi
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引用次数: 1

Abstract

Continuous Video-EEG monitoring (CCTV) was initiated on a 63-year-old male admitted to the neurological intensive care unit (NICU) with sub-arachnoid hemorrhage due to rupture of a right posterior communicating artery aneurysm. During review of the overnight record a sudden change in the baseline record occurred with appearance of a rhythmic theta frequency sharply contoured waveform best visualized in the left para-sagittal and central ( Cz and Pz) leads ( Fig 1 and 2). This electrographic discharge was correctly recognized to be a non-physiological (non-cerebral) artifact generated by the to and fro rocking motion of the motorized bed on visual inspection of the concurrent video record. This motorized bed artifact further disappeared when the bed was switched off thus confirming its non-cerebral origin. With continuous EEG monitoring becoming increasingly common in the intensive care unit, correct identification of artifacts generated by the patient's surroundings is of paramount importance to prevent misinterpretation of the EEG and inadvertent over treatment. Figure 1 Figures 1 and 2. EEG record showing a sudden change in the baseline record with appearance of a rhythmic theta frequency sharply contoured waveform best visualized in the left para-sagittal and central ( Cz and Pz) leads.
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重症监护室的电动床
对一名因右后交通动脉瘤破裂而出现蛛网膜下腔出血的63岁男性患者进行连续视频脑电图监测(CCTV)。在检查夜间记录时,基线记录发生了突然变化,出现了有节奏的θ频率急剧轮廓波形,在左矢状旁和中央(Cz和Pz)导联中最明显(图1和2)。在同步视频记录的视觉检查中,这种电放电被正确地识别为由电动床来回摇晃运动产生的非生理性(非脑性)伪影。当床被关闭时,这个电动床进一步消失,从而证实了它的非大脑起源。随着连续脑电图监测在重症监护病房变得越来越普遍,正确识别患者周围环境产生的伪影对于防止脑电图的误解和无意的过度治疗至关重要。图1图1和图2脑电图记录显示基线记录的突然变化,在左矢状旁和中央(Cz和Pz)导联中最明显地出现有节奏的θ频率轮廓波形。
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