CRCM  Vol.5 No.5 , May 2016
Hyperacute cEEG Attenuation in Aneurysmal Subarachnoid Hemorrhage
Abstract: We describe hyperacute generalized EEG slowing and then attenuation captured at the moment of subarachnoid hemorrhage in a monitored patient. This is the first reported cEEG capture of aneurysmal subarachnoid hemorrhage in the literature.
Cite this paper: Burghardt, T. , Sachdeva, G. , Rao, M. , Chaudhry, S. , Schulte, A. and Yassin-Kassab, M. (2016) Hyperacute cEEG Attenuation in Aneurysmal Subarachnoid Hemorrhage. Case Reports in Clinical Medicine, 5, 165-169. doi: 10.4236/crcm.2016.55031.

[1]   Schmitt, S.E., Pargeon, K., Frechette, E.S., Hirsch, L.J., Dalmau, J. and Friedman, D. (2012) Extreme Delta Brush: A Unique EEG Pattern in Adults with Anti-NMDA Receptor Encephalitis. Neurology, 79, 1094-100.

[2]   Chong, D.J. and Hirsch, L.J. (2005) Which EEG Patterns Warrant Treatment in the Critically Ill? Reviewing the Evidence for Treatment of Periodic Epileptiform Discharges and Related Patterns. Journal of Clinical Neurophysiology, 22, 79-91.

[3]   Trinka, E. and Leitinger, M. (2015) Which EEG Patterns in Coma Are Nonconvulsive Status Epilepticus? Epilepsy & Behavior, 49, 203-22.

[4]   Claassen, J., Hirsch, L.J., Frontera, J.A., et al. (2006) Prognostic Significance of Continuous EEG Monitoring in Patients with Poor-Grade Subarachnoid Hemorrhage. Neuro-critical Care, 4, 103-112.

[5]   Rivierez, M., Landau-Ferey, J., Grob, R., Grosskopf, D. and Philippon, J. (1991) Value of Electroencephalogram in Prediction and Diagnosis of Vasospasm after Intracranial Aneurysm Rupture. Acta Neurochirurgica, 110, 17-23.

[6]   Claassen, J., Carhuapoma, J.R., Kreiter, K.T., Du, E.Y., Connolly, E.S. and Mayer, S.A. (2002) Global Cerebral Edema after Subarachnoid Hemorrhage: Frequency, Predictors, and Impact on Outcome. Stroke, 33, 1225-1232.

[7]   Frijns, C.J.M., Fijnheer, R., Algra, A., van Mourik, J.A., van Gijn, J. and Rinkel, G.J.E. (2006) Early Circulating Levels of Endothelial Cell Activation Markers in Aneurysmal Subarachnoid Haemorrhage: Associations with Cerebral Ischaemic Events and Outcome. Journal of Neurology, Neurosurgery & Psychiatry, 77, 77-83.

[8]   Romano, J.G., Forteza, A.M., Concha, M., et al. (2002) Detection of Microemboli by Transcranial Doppler Ultrasonography in Aneurysmal Subarachnoid Hemorrhage. Neurosurgery, 50, 1021-1026.

[9]   Leão, A.A.P. (1944) Spreading Depression of Activity in the Cerebral Cortex. The Journal of Physiology, 7, 359-390.

[10]   Adámek, S. and Vyskocil, F. (2011) Potassium-Selective Microelectrode Revealed Difference in Threshold Potassium Concentration for Cortical Spreading Depression in Female and Male Rat Brain. Brain Research, 1370, 215-219.

[11]   Dreier, J.P., Major, S., Manning, A., et al. (2009) Cortical Spreading Ischaemia Is a Novel Process Involved in Ischaemic Damage in Patients with Aneurysmal Subarachnoid Haemorrhage. Brain, 132, 1866-1881.

[12]   Larrosa, B., Pastor, J., López-Aguado, L. and Herreras, O. (2006) A Role for Glutamate and Glia in the Fast Network Oscillations Preceding Spreading Depression. Neuroscience, 141, 1057-1068.