Myles Paul S, Cairo Sesto
Department of Anaesthesia & Pain Management, Alfred Hospital, Victoria, Australia.
Anesth Analg. 2004 Mar;98(3):706-7, table of contents. doi: 10.1213/01.ane.0000099360.49186.6b.
The electroencephalogram (EEG) has been used to predict neurological outcome in patients with anoxic-ischemic brain injury. The bispectral index (BIS) may be a useful alternative. A persistently low BIS associated with burst-suppression of the raw EEG in the setting of minimal hypnotic drug administration may indicate severe cerebral ischemia. We report a case where a patient with presumed ischemic brain injury and an extremely low BIS had an unexplained increase in BIS that could be attributed to electrocardiogram artifact. Care should be taken when interpreting BIS in the setting of anoxic-ischemic brain injury or brain death.
The bispectral index (BIS) can be prone to artifact. In this report we found that electrocardiogram artifact led to an apparent normal BIS in a patient with complete burst-suppression associated with severe brain injury.
脑电图（EEG）已被用于预测缺氧缺血性脑损伤患者的神经学转归。脑电双频指数（BIS）可能是一种有用的替代方法。在使用极少量催眠药物的情况下，持续低BIS并伴有原始脑电图的爆发抑制可能提示严重脑缺血。我们报告一例病例，该例疑似缺血性脑损伤且BIS极低的患者，其BIS出现了无法解释的升高，这可能归因于心电图伪迹。在缺氧缺血性脑损伤或脑死亡情况下解读BIS时应谨慎。
脑电双频指数（BIS）可能容易出现伪迹。在本报告中，我们发现心电图伪迹导致一名伴有严重脑损伤且完全爆发抑制的患者出现看似正常的BIS。
