Synchronized Attenuation of Frontal Alpha Wave Power and Mean Arterial Pressure During Cardiopulmonary Bypass

We experienced a case in which a drop in alpha wave power was observed in electroencephalograms (EEGs) on a bispectral index monitor (Medtronic, Minneapolis, MN) in association with a transient reduction in mean arterial pressure despite stable regional cerebral oximetry values during cardiopulmonary bypass. This observation suggested that a transient decrease in cerebral blood flow may have occurred. A 63-year-old man with angina pectoris underwent on-pump coronary artery bypass grafting. In the operating room, neuromonitoring included bilateral frontal regional cerebral oximetry (INVOS ™ 5100C cerebral/somatic oximeter; Medtronic, Minneapolis, MN) and left frontal EEGs (bispectral index monitor).
Source: Journal of Cardiothoracic and Vascular Anesthesia - Category: Anesthesiology Authors: Tags: Case Report Source Type: research