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Bispectral Index Changes during Acute Brainstem TIA/Ischemia

2010; Hindawi Publishing Corporation; Volume: 2010; Linguagem: Inglês

10.1155/2010/697185

1687-9627

Chris P. Bleeker, Bart W. Smits, Pieter E. Vos, Jo Mourisse,

Advanced MRI Techniques and Applications

We describe a 76-year-old patient who suffered a brainstem TIA just before being anesthetised for cardiac surgery. The TIA was registered on BIS and resulted in a drop in BIS to a value of 60. When consciousness returned spontaneously, the BIS increased to 85. The relative use of the BIS during an operation is discussed. We believe that the lack of input from the brainstem to the frontal cortex resulted in the reduced cortical electrical activity as registered with the BIS.