Kamata Kotoe, Lipping Tarmo, Yli-Hankala Arvi, Jäntti Ville, Yamauchi Masanori
Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai-shi, Miyagi, 980-8575, Japan.
Faculty of Information Technology and Communication, Tampere University, Pohjoisranta 11, 28100, Pori, Finland.
JA Clin Rep. 2021 Apr 17;7(1):35. doi: 10.1186/s40981-021-00441-z.
The depth of anesthesia (DOA) is estimated based on the anesthesia-induced electroencephalogram (EEG) changes. However, the surgical environment, as well as the patient him/herself, generates electrical interferences that cause EEG waveform distortion.
A 52-year-old patient required general anesthesia due to the right femur necrotizing fasciitis. He had no history of epilepsy or head injury. His cardiovascular status was stable without arrhythmia under propofol and remifentanil anesthesia. The DOA was evaluated with Root® with SedLine® Brain Function Monitoring (Masimo Inc, Irvine, CA). The EEG showed a rhythmic, heart rate time-locked pulsation artifact, which diminished after electrode repositioning. Offline analysis revealed that the pulse wave-like interference in EEG was observed at the heart rate frequency.
We experienced an anesthesia case that involves a pulsation artifact generated by the superficial temporal artery contaminating the EEG signal. Numerous clinical conditions, including pulsation artifact, disturb anesthesia EEG.
麻醉深度（DOA）是根据麻醉诱导的脑电图（EEG）变化来估计的。然而，手术环境以及患者自身都会产生电干扰，导致EEG波形失真。
一名52岁患者因右股骨坏死性筋膜炎需要全身麻醉。他没有癫痫或头部受伤史。在丙泊酚和瑞芬太尼麻醉下，他的心血管状况稳定，无心律失常。使用带有SedLine®脑功能监测的Root®（Masimo公司，加利福尼亚州欧文市）评估麻醉深度。EEG显示有节律的、与心率时间锁定的搏动伪影，电极重新定位后该伪影减弱。离线分析显示，在心率频率处观察到EEG中的脉搏波样干扰。
我们遇到了一例麻醉病例，其中颞浅动脉产生的搏动伪影干扰了EEG信号。包括搏动伪影在内的许多临床情况都会干扰麻醉EEG。
